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4.8/5
based on 152 client reviews
  • $40 hourly
    • 5.0/5
    • (68 jobs)
    Expert-vetted technical writer specialized in creating API documentation, SDK documentation, user guides, tutorials, and developer portals. Your project benefits from over 7 years of writing experience bolstered by a strong background in software development, technical project management, and engineering. - Helped +40 SaaS companies reduce support tickets and churn by 30% with high-quality documentation. - Proficient in creating developer portals containing API documentation and user guides with Readme, Swagger, Docusaurus, Mintlify, Stoplight and Gitbook. - Highly skilled in testing and validating API documentation using Postman. - Experienced in running and testing SDKs. - Specialized in creating API documentation using the OpenAPI specification. - Comfortable with JSON, YAML, REST APIs, HTML, and CSS. - Available to work with internal teams using different types of communication tools like Slack and Microsoft Teams. My writing is developed alongside outstanding content structuring, proofreading, grammar checking, testing, and developing content that is center-focused on your target audience. My extensive background in engineering will bring value to your project, and my broad experience as a technical writer writing will allow you to stand out from your competitors. By choosing me you will achieve: ✅ Clear and concise API Documentation that considers your branding and stands out in style. ✅ High-quality technical content focused on your target audience. ✅ Professional documentation management and maintenance. ✅ Quick turnaround on projects. ✅ Commitment to overdeliver, respecting the deadlines imposed by you. ✅ Increased and highly efficient communication
    Featured Skill Swagger
    SaaS
    Tech & IT
    Software Documentation
    Software
    Instruction Manual
    API Documentation
    Markdown
    Technical Writing
    Technical Documentation
    Documentation
    Content Writing
    OpenAPI
    API
    User Manual
  • $26 hourly
    • 4.9/5
    • (33 jobs)
    Hello, and thank you for visiting my profile! I am a seasoned technical writer with over a decade of professional experience in software development and technical communication. My expertise spans a wide range of technologies, allowing me to create impactful technical documentation and user guides that drive clarity and engagement. Professional Expertise: • Documentation Management & Strategy Skilled in designing and implementing end-to-end documentation processes that align seamlessly with organizational objectives. • Comprehensive Guides & Documentation Proficient in creating in-depth user guides, release notes, and developer documentation, especially for AI-powered systems and technologies. • Generative AI & Large Language Models (LLMs) Strong expertise in documenting the integration of Generative AI and LLMs into existing platforms, ensuring clarity for both technical and non-technical audiences. • Technical Documentation Specializing in API documentation, SDK guides, technical white papers, and complex technical content that aids users in understanding advanced systems. • Content Management Systems (CMS) Advanced proficiency with CMS tools like Confluence, MadCap Flare, and GitHub, ensuring efficient content organization and delivery. • Agile & Scrum Collaboration Experienced in working within Agile environments, collaborating effectively with cross-functional teams to deliver high-quality documentation on schedule. • Knowledge Base Development Expertise in building and maintaining searchable, scalable knowledge bases for both internal and external audiences. Core Competencies: • Technical Writing & Editing • User Manuals & Guides • Content Migration • API Documentation • Online Help Systems • Content Management Systems (CMS) • Project Management Technical Proficiencies: • Adobe Experience Manager (AEM), • Docusaurus, • gitbook • Oxygen-XML • Document360 • Asiidoc • Stoplight • Swagger, • DITA-XML, • Readme.io, • Postman, • Wiki-Confluence, • mkdocs, • Sphinx, • GitHub • Markdown, • HTML, • REST APIs, • GraphQL, How I Can Help You: • Crafting user-centric documentation for SaaS platforms, ensuring complex information is presented in clear, concise formats. • Expertise in using developer portal tools such as Readme.io, Swagger, Docusaurus, Redocly, Stoplight.io, and Gitbook. • In-depth experience with API testing through Postman and OpenAPI specifications to produce detailed, accurate documentation. • Proficient in working with HTML, CSS, and various programming frameworks to maintain and deliver content. • A collaborative team player with experience in tools like Microsoft Teams, Slack, and others to streamline communication and workflows. Your satisfaction is my priority, and I look forward to partnering with you to create exceptional, user-focused documentation. Let’s work together to achieve outstanding results!
    Featured Skill Swagger
    Software Documentation
    Technical Documentation Management
    Process Documentation
    Product Documentation
    Camtasia
    Adobe Experience Manager
    API Documentation
    User Manual
    Documentation
    Atlassian Confluence
    Markdown
    Technical Writing
    XML
    Technical Documentation
  • $18 hourly
    • 4.9/5
    • (33 jobs)
    Are you searching for a tech wizard who can breathe life into your web applications with cutting-edge technologies? Look no further! As a seasoned Senior Node, React, Redux, GraphQL and TypeScript Developer, I bring a passion for innovation and a wealth of experience to the table. With a keen eye for detail and a creative flair, I excel in crafting captivating and interactive user interfaces that leave users spellbound. From designing seamless data flows with Redux to architecting flexible GraphQL APIs, I have honed my skills to deliver performance-driven solutions that push the boundaries of what's possible in web development. With a proven track record of success and a thirst for staying at the forefront of industry trends, I am ready to take your projects to new heights of excellence. Let's collaborate and build something extraordinary together! Here are my skills set:- Node.js | React | Redux | GraphQL | TypeScript | JavaScript | HTML5 | CSS3 | RESTful APIs | Webpack | Git | Express.js | SQL/NoSQL Databases | Test-Driven Development (TDD) | UI/UX Design Principles | Responsive Web Design | Performance Optimization | Code Debugging and Profiling | Cross-Browser Compatibility | Agile Methodologies | Continuous Integration and Deployment (CI/CD) | DevOps Tools and Practices....
    Featured Skill Swagger
    React Native
    Redux Saga
    NestJS
    Git
    React
    MongoDB
    TypeScript
    Redux
    JavaScript
    webpack
    Amazon Web Services
    GraphQL
    Node.js
  • $45 hourly
    • 5.0/5
    • (24 jobs)
    HI I have 10 years of experience in programming (backend). My main programming language is Golang, and I have experience creating microservice applications using Docker, Kubernetes (ECS and GKE), setup CI/CD using GitLab-ci or Jenkins, and most of my projects using Echo framework for APIs and for connecting internal services I use Grpc or Kafka.
    Featured Skill Swagger
    Back-End Development
    RESTful API
    RabbitMQ
    Git
    Stripe
    Microservice
    Google Cloud Platform
    Apache Kafka
    Amazon ECS for Kubernetes
    Kubernetes
    PostgreSQL
    MySQL
    Docker
    Golang
  • $40 hourly
    • 5.0/5
    • (26 jobs)
    Hello, Thanks for visiting my profile! I'm a professional with over 10 years of experience in the OpenAPI domain. I provide services related to writing, fixing, and polishing OpenAPI specifications for APIs. I cover all aspects within the OpenAPI landscape, offering a comprehensive solution for your needs. With my knowledge of OpenAPI, I specialize in crafting clear and concise API documentation that meets high standards. I make sure your API specifications are accurate and easily understandable by your audience. I'm committed to excellence, ensuring that your APIs are well-represented through seamless technical documentation. Whether you need help with new specifications or refining existing ones, I have the expertise to meet your expectations. My proficiency in OpenAPI enables me to work with Swagger, delivering outstanding results for your API projects, regardless of complexity. I have a successful track record in creating, refining, and maintaining API specifications using this powerful tool. I understand the importance of clear API documentation and focus on presenting complex concepts in a straightforward manner. This ensures that your target audience can comprehend and effectively use your API. By choosing my services, you can expect prompt and professional communication, adherence to deadlines, and attention to detail throughout our collaboration. With my extensive experience in the OpenAPI ecosystem, I guarantee that your API specifications will be precise, accurate, and highly functional. If you're looking for a dedicated professional with a proven track record in OpenAPI, API documentation, technical documentation, and API specification, I'm here to help. Let's collaborate to ensure your API projects thrive and exceed your expectations. Feel free to reach out with any questions. I look forward to the opportunity to work with you and contribute to your success. Best regards, Ali Raza
    Featured Skill Swagger
    RAML
    JSON API
    Technical Writing
    SQL
    MySQL Programming
    SQL Programming
    Apiary
    API Documentation
    Documentation
    OpenAPI
    API
    Postman
    Specifications
    Technical Documentation
    API Blueprint
    Google APIs
    MySQL
  • $30 hourly
    • 5.0/5
    • (17 jobs)
    Are you looking for a skilled software engineer who can seamlessly integrate your enterprise systems while delivering full-stack solutions? Look no further! 🚀 What I Do Best: ✅ API Integrations & Middleware: • Certified in MuleSoft ESB, with experience in IBM IIB, RedHat Fuse, and Azure Integrations. ✅ Full Stack Development: • Frontend: React.js, Angular, HTML5, CSS3 • Backend: Spring Boot, Node.js, C, Rust ✅ Cloud Solutions: • Expert in AWS: EC2, S3, CloudFront, Route 53 Why Choose Me? • Efficient & Scalable Solutions: I deliver clean, maintainable code optimized for performance. • Enterprise Integration Expertise: Seamlessly connect systems, automate workflows, and reduce complexity. • Full-Stack Capabilities: From frontend UI to backend systems, I handle it all. Let’s collaborate to bring your vision to life. 🚀 Whether you need APIs, integrations, or full-stack solutions, I’m here to deliver results that drive your business forward.
    Featured Skill Swagger
    CRM Software
    CI/CD
    OpenAPI
    RESTful Architecture
    Mulesoft
    API Integration
    RAML
    JSON
    SQL
    C++
    Rust
    Java
    Python
  • $60 hourly
    • 5.0/5
    • (100 jobs)
    ✅ 𝗧𝗼𝗽 𝟬.𝟭% 𝗨𝗽𝘄𝗼𝗿𝗸𝗲𝗿. 𝟭𝟯+ 𝘆𝗲𝗮𝗿𝘀 𝗽𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲. ✅ 𝟭𝟱𝟬+ 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝘀𝘂𝗽𝗽𝗼𝗿𝘁𝗲𝗱 𝗶𝗻𝗰𝗹𝘂𝗱𝗶𝗻𝗴 𝗚𝘂𝗶𝗻𝗻𝗲𝘀𝘀 𝗮𝗻𝗱 𝗲𝘃𝗲𝗻 𝗳𝗼𝗿𝗲𝗶𝗴𝗻 𝗶𝗻𝘁𝗲𝗹𝗹𝗶𝗴𝗲𝗻𝗰𝗲 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀. ✅ < 𝟭-𝗵𝗼𝘂𝗿 𝗽𝗮𝗶𝗱 𝗰𝗹𝗶𝗲𝗻𝘁 𝗿𝗲𝘀𝗽𝗼𝗻𝘀𝗲 𝘁𝗶𝗺𝗲𝘀 ✅ 𝗘𝘅𝘁𝗲𝗻𝘀𝗶𝘃𝗲 𝘀𝘁𝗮𝗿𝘁𝘂𝗽 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗮𝗻𝗱 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗮𝘁𝗶𝗼𝗻 ✅ 𝗟𝗼𝘃𝗲 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗹𝗼𝗻𝗴-𝘁𝗲𝗿𝗺 𝗮𝘀 𝘁𝗵𝗲𝘆 𝘀𝗰𝗮𝗹𝗲 Hey I’m Anton! I specialize in development solutions for US, EUR & CAD startups, turning ideas into brilliantly functioning solutions with Python, Django & top-notch full-stack development tools. 📞 𝗦𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗱𝗶𝗿𝗲𝗰𝘁 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝗼𝗿 𝗶𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝘁𝗼 𝗯𝗼𝗼𝗸 𝗮𝗻 𝗶𝗻𝗶𝘁𝗶𝗮𝗹 𝗰𝗼𝗺𝗽𝗹𝗶𝗺𝗲𝗻𝘁𝗮𝗿𝘆 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝗰𝗮𝗹𝗹 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 📞 — 𝗠𝘆 𝗴𝗲𝗻𝗶𝘂𝘀 𝘇𝗼𝗻𝗲 𝗿𝗲𝘃𝗼𝗹𝘃𝗲𝘀 𝗮𝗿𝗼𝘂𝗻𝗱: ☑️ Building a product that solves your current challenges and, if it’s your goal, maximizes the likelihood you get successfully funded by investors. ☑️ Guiding clients to avoid pitfalls common to the stage of their startup. ☑️ Implement the right tech stack from day 1. Significantly reducing headaches and costs. ☑️ Exceptional project management. You always understand what’s being done and what’s next. No mysterious invoices. ☑️ Ongoing education - you and your team know exactly how your solution works, and more importantly, it actually does work. ⭐⭐⭐⭐⭐ ❝ I had the pleasure of working with Anton on a Python project that demanded both high-level expertise and meticulous attention to detail. Not only did he deliver exceptional code that was well-crafted, efficient, and thoroughly documented. He also showcased an incredible knack for proactive problem-solving. He anticipated challenges before they could become obstacles, thereby streamlining the workflow and saving valuable time. In addition, his communication skills were impeccable, making complex technical solutions easily digestible without sacrificing nuance or detail. Meeting all deadlines ahead of schedule. Anton exhibited a level of professionalism and reliability that respects the highest standards. ❞ 🗣 𝘿𝙧. 𝙅𝙪𝙖𝙣 𝙎𝙪𝙖𝙧𝙚𝙯 - 𝘾𝙤-𝙛𝙤𝙪𝙣𝙙𝙚𝙧/𝘾𝙊𝙊 - 𝙃𝙚𝙖𝙡𝙩𝙝𝙁𝙤𝙧𝙘𝙚 (𝗛𝗲𝗮𝗹𝘁𝗵𝗰𝗮𝗿𝗲 𝗣𝗿𝗼𝗰𝗲𝘀𝘀 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻) 🗣 ⭐⭐⭐⭐⭐ Technical expert in Python & Django but offer full-cycle project support including full-stack development (backend and front-end), project management, deployment and post-launch support. 𝗛𝗶𝗴𝗵𝗹𝗶𝗴𝗵𝘁𝘀 𝗼𝗳 𝘁𝗵𝗲 𝘁𝘆𝗽𝗲𝘀 𝗼𝗳 𝘄𝗼𝗿𝗸 𝗜 𝗲𝘅𝗰𝗲𝗹 𝗮𝘁 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝗶𝗻𝗴 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: ☑️ Backend Development - Python - Django - Django REST - FastAPI - Flask - PostgreSQL - Celery - Docker ☑️ API Solutions - API Development - API Integrations ☑️ MVP Development - POC Development ☑️ Web Development & Web App Development - Portals ☑️ Software Development ☑️ Cloud Development Solutions - Amazon Web Services - AWS - Microsoft Azure - Google Cloud Platform - GCP - DigitalOcean - Heroku ☑️ Digital Transformation - From Offline To Online 𝗡𝗶𝗰𝗵𝗲𝘀 & 𝗶𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜 𝗵𝗮𝘃𝗲 𝗲𝘅𝘁𝗲𝗻𝘀𝗶𝘃𝗲 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝘄𝗶𝘁𝗵 𝗶𝗻𝗰𝗹𝘂𝗱𝗲: 🔸 SaaS - Tech - Startups 🔸 Healthcare 🔸 eCommerce & Retail 🔸 Fintech 🔸 Manufacturing 🔸 Real Estate 🔸 E-sport (Gaming) 🔸 Fleet Management 🔸 Hospitality 📞 𝗦𝗲𝗻𝗱 𝗺𝗲 𝗮 𝗱𝗶𝗿𝗲𝗰𝘁 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝗼𝗿 𝗶𝗻𝘃𝗶𝘁𝗲 𝗺𝗲 𝘁𝗼 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝘁𝗼 𝗯𝗼𝗼𝗸 𝗮𝗻 𝗶𝗻𝗶𝘁𝗶𝗮𝗹 𝗰𝗼𝗺𝗽𝗹𝗶𝗺𝗲𝗻𝘁𝗮𝗿𝘆 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝗰𝗮𝗹𝗹 𝘁𝗼𝗴𝗲𝘁𝗵𝗲𝗿. 📞 I appreciate the time you’ve taken to learn more about me! Look forward to getting a chance to talk soon. Anton Pavlovych ⭐⭐⭐⭐⭐ ❝ Working with Anton was an outstanding experience! Communication was excellent throughout the collaboration, with daily updates and consistent progress reflected in GitHub. He was incredibly professional, reliable, and remained on the project for several months, which was a highlight for us after past challenges with other agencies. We highly recommend Anton and look forward to working with him again. Thank you for the fantastic collaboration! ❞ 🗣 𝙆𝙚𝙫𝙞𝙣 𝙆𝙪𝙝𝙣 - 𝘾𝙀𝙊 - 𝙂𝙤𝙥𝙛 (𝘼𝙜𝙚𝙣𝙩𝙞𝙘 𝘼𝙄 𝙎𝙤𝙡𝙪𝙩𝙞𝙤𝙣𝙨) 🗣 ⭐⭐⭐⭐⭐
    Featured Skill Swagger
    Web Application
    SaaS Development
    React
    Django Stack
    RESTful API
    API Development
    API Integration
    Python
    JavaScript
    Flask
    Django
    SaaS
    Web Development
    Docker
    API
  • $35 hourly
    • 4.8/5
    • (98 jobs)
    👋 Hi! I'm Michael - a Senior React & React Native developer with 7+ years of experience delivering high-quality mobile and web applications. Over the past several years, I've completed 50+ successful projects on Upwork and built long-term partnerships with startups and teams worldwide. My focus is on creating reliable, scalable solutions that go beyond just working - they make a real impact. 💡 Here's what I bring to the table: – Deep expertise in React, React Native, TypeScript, Expo – Solid knowledge of Node.js, Vue.js, Django for full-stack development – Hands-on experience with Firebase, GraphQL, Stripe, Google Maps, CI/CD, and more – Strong focus on clean code, clear communication, and on-time delivery 🛠️ I work across the stack - whether it's crafting seamless mobile apps, building interactive UIs, or integrating APIs for high-performance systems. 🚀 Recent projects include: – A mobile fitness app with real-time notifications and OTA updates – A cross-platform marketplace with payments and messaging – A SaaS analytics dashboard with custom visualizations and API integrations 💬 What clients say: "Michael is extremely reliable, communicates well, and delivers great code." "Very talented, goes above and beyond, a pleasure to work with." I'm not just here to write code - I'm here to help you build products that matter. Let's connect and bring your idea to life - from concept to launch and beyond.
    Featured Skill Swagger
    Browser Extension
    Gatsby.js
    Next.js
    Redux Saga
    Expo.io
    Blockchain
    Vue.js
    Apple Xcode
    GraphQL
    Firebase
    React
    React Native
    JavaScript
    Flutter
  • $25 hourly
    • 4.9/5
    • (66 jobs)
    1) 11+ yrs in Python, Django, FastAPI, and AI/ML. 2) Full-stack expert with React, Vue & scalable systems. 3) Built AI platforms using NLP, LLMs, TensorFlow & PyTorch. 4) DevOps-ready: Docker, K8s, AWS, CI/CD, GCP. 5) MVP to enterprise — delivers fast, clean, and smart code. Crafting smart, scalable web apps with Django (since v0.3), Python (v2.3+), FastAPI, Flask & React. I specialize in building intelligent systems with AI/ML, NLP, and LLMs. From MVPs to enterprise-grade platforms — I turn complex tech into real-world impact. 🧠 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 𝐁𝐞𝐬𝐭: AI & Backend: Python, FastAPI, Django, NLP, TensorFlow, PyTorch Full Stack Apps: React, Vue, Next.js — performant & responsive Cloud & DevOps: Docker, K8s, AWS, GCP, CI/CD 𝐍𝐨𝐭𝐚𝐛𝐥𝐞 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬: KredX – Enterprise-grade financial platform built with Python Surmount.AI – Legal automation powered by LLMs MTailor – Machine learning pipelines for body measurement automation Open edX – Scalable and extensible online learning platform using Python Deflection.AI – NLP-powered customer support automation TheEntertainer – Web and mobile app development with Python and React 🌍 Global collaboration | 🚀 MVP to scale | ✅ Reliable, clear, and business-focused Python Developer Django Expert FastAPI Developer Flask Developer Fullstack (Python) Developer Machine Learning Engineer Full Stack Developer Backend Developer API Integration FastAPI Django Expert Flask Developer React Developer AWS Docker CI/CD Data Engineer Pandas NumPy TensorFlow PyTorch Scikit-Learn Web Scraping OpenAI Integration Chatbot Developer LLM
    Featured Skill Swagger
    RESTful API
    AWS Lambda
    Docker
    SQLAlchemy
    Chatbot
    JavaScript
    React
    API Integration
    Flask
    Machine Learning
    AI Development
    Automated Workflow
    Django
    FastAPI
    Python
  • $50 hourly
    • 5.0/5
    • (22 jobs)
    Greetings, I am a Certified Java Developer with over 13 years of experience, recognized for my prowess in enterprise-level application development, often under tight deadlines. My journey is anchored in developing robust backend systems using the Spring Framework, highlighted by my collaborations with Fortune 500 giants. I have consistently infused innovation and growth into these projects, delivering unparalleled results. 🌟Certifications🌟 🏅ORACLE Certified Java Programmer - 2013 🏅Oracle Web Component Certified Expert - 2016 🏅Oracle Web Services Certified Expert - 2017 🏅Amazon Web Services Associate Developer – 2018 🌟 My Specialization 🌟 ✅ Java (8, 11 & 17): Extensive expertise utilizing recent Java features, including Lambdas, Stream APIs, DateTime APIs, and Functional Interfaces. ✅ Java EE Family: EJB, JPA, Hibernate,Servlets, RESTful Services (JAX-RS), SOAP Services (JAX- WS), Apache CXF & Bean Validation. ✅ Java EE Web: JSF, JSP, Thymeleaf, Bootsfaces & Primesfaces. ✅ Spring Frameworks: SpringBoot, Spring Core, Spring Batch, Spring Data, Spring Cloud ✅ SQL Databases: SQL Server, MySQL, PostgreSQL, MariaDB & Oracle ✅ NoSQL Databases: MongoDB & Redis ✅ AWS: IAM, EC2, S3, RDS, Lambda, Elastic Beanstalk etc. ✅ Oracle Cloud Platform (OCP): Services deployment and management ✅ Message Broker: Kafka and Zookeeper ✅ Message Queues: ActiveMQ & RabbitMQ. ✅ Testing: JUnit, Spring Test, Mockito, Integration Test, Unit Test. ✅ Versioning: GIT, GITHub, BitBucket & VisualSVN. ✅ DevOps: Docker, Kubernetes, Jenkins. ✅Hands-on design, development, implementation, and optimization of the application. ✅Use Object-oriented techniques and Software engineering best practices including Design review, Code review, and Code re-factoring. ✅Experienced with the full Software development life cycle (SDLC) including - Requirement gathering - Prototyping (Design, Development & Debugging) - Testing and - Deployment Keen to contribute to visionary projects where my expansive Development and architectural transformation skills can truly shine, I eagerly look forward to collaborating with your esteemed team.
    Featured Skill Swagger
    TortoiseSVN
    Git
    Apache Maven
    jMock
    JUnit
    jQuery
    Angular
    Spring Batch
    Spring Cloud
    Spring MVC
    Microservice
    Spring Boot
    Java Servlet API
    JavaScript
    Java
  • $15 hourly
    • 5.0/5
    • (37 jobs)
    With over 10+ years of experience in Full-Stack and Mobile App Development, I specialize in building scalable, high-performing, and innovative applications for startups and businesses. My mission is to transform ideas into impactful digital solutions, leveraging cutting-edge technologies like React.js, Node.js, Next.js, and React Native. I’m skilled in creating seamless web and mobile applications, MVPs for startups, and SaaS platforms. Whether you're looking to launch a product, optimize your existing application, or automate business processes, I deliver solutions that are not only technically robust but also user-friendly and future-proof. ------------------------------------------------------------------------- 🛠️ Skills and Expertise Frontend Development: React.js / Next.js / Vue.js / Tailwind CSS / Material UI / JavaScript (ES6) / TypeScript / HTML5 / CSS3 / Progressive Web Apps (PWA) / Responsive Web Design Backend Development: Node.js / Express.js / NestJS / Python / Django / Ruby on Rails (RoR) / Microservices Architecture / Serverless Architecture Database Management: MySQL / MongoDB Atlas / PostgreSQL / SQLite / NoSQL / Amazon DynamoDB Mobile App Development: React Native / Expo / Flutter / Android Development / iOS Development / Cross-Platform Development / Real-Time Communication Apps / Video and Audio Call Applications Cloud and DevOps: Amazon Web Services (AWS) – AWS Lambda, AWS S3, AWS EC2 Google Cloud Platform (GCP) – Google Cloud Functions, Firebase Hosting, Firebase Cloud Functions, Firebase Cloud Messaging (FCM) Docker / Kubernetes / CI/CD Pipelines (Jenkins, CircleCI) API Integration and Third-Party Services: REST APIs / GraphQL / Stripe API / Shopify API / Twilio / Auth0 / OpenAI Integration / Third-Party API Integration UI/UX Design: Figma / Responsive Design / User-Centric Interfaces / Tailored UX/UI Solutions ------------------------------------------------------------------------- 🌟 Notable Achievements 1. Developed an MVP for Artoh, securing $1M in funding, and empowering e-commerce businesses with real-time financial insights. 2. Built a shipping automation system capable of processing over 100,000 invoices daily with seamless NetSuite integration and serverless architecture. 3. Delivered cutting-edge solutions like a custom T-shirt printing app, PWA for real-time order tracking and an ebook designing platform. 4. Implemented real-time communication features such as video and audio calls using Socket.io. ------------------------------------------------------------------------- 🔑 Comprehensive Services Offered React.js Development / React Native Development / Node.js Backend Development / Full-Stack Application Development / Real-Time Communication Apps / Serverless Architecture / Cloud-Native Applications / API Integration / Custom Dashboards / MVP Development / SaaS Platform Development / Tailored E-Commerce Solutions / Payment Gateway Integration / UX/UI Optimization / Shopify API Integration / Mobile App Development 🚀 Ready to Build Your Vision? Let’s transform your ideas into scalable, impactful solutions. Press “Invite” to discuss your project today! ------------------------------------------------------------------------- Keywords Web Developer | Web Development | Mobile App Developer | Mobile App Development | SaaS Developer | SaaS Development | MVP Development | Backend Developer | Backend Development | Frontend Developer | Frontend Development | API Integration | Third-Party API Integration | REST APIs | GraphQL | Progressive Web Apps | PWA Development | Serverless Architecture | AWS Developer | Google Cloud Developer | Firebase Expert | Cloud-Native Applications | Cross-Platform Development | Real-Time Communication Apps | Video Call Apps | Stripe API Integration | Shopify API Integration | Payment Gateway Integration | E-commerce Developer | E-commerce Development | Microservices Architecture | Docker | Kubernetes | CI/CD Pipelines | Tailwind CSS | Material UI | Figma | Responsive Design | MERN Stack Developer | MongoDB Developer | MySQL Developer | PostgreSQL Expert | NoSQL Databases | SQL Developer | AWS Lambda | AWS S3 | Firebase Cloud Functions | Firebase Hosting | TypeScript | JavaScript Developer | Python Developer | Django Developer | Ruby on Rails Developer | OpenAI Integration | Socket.io | Shopify Expert | Shopify App Integration | Stripe Checkout | Redis | Puppeteer | Geolocation Apps | Android Development | iOS Development | Vue.js | Vue.js Development | Custom Dashboards | Firebase Cloud Messaging | Firebase Firestore | SaaS Platforms | Shopify Store Setup | Firebase Development | Twilio Integration | Auth0 Integration | SEO Optimization | Web App Development | Mobile App Prototyping | UX/UI Optimization | User-Centric Design | Business Automation | Multi-Tenancy Applications | Agile Software Development | Payment APIs | Stripe API Expert | Shopify App Development | Vercel | Expo | Web Hosting | Firebase Analytics | Redis Integration
    Featured Skill Swagger
    SaaS
    Amazon Web Services
    Web Development
    Sequelize
    API Integration
    Web Application
    TypeScript
    React Native
    Firebase
    Docker
    Node.js
    React
    MongoDB
    JavaScript
    GraphQL
  • $15 hourly
    • 5.0/5
    • (39 jobs)
    ✔OCJP certified ✔AWS - 4 Certifications ✔Microservices Architect ✔12 years of experience ✔RESTful API ✔Java Spring Boot ✔Spring Cloud ✔Redis ✔Kafka ✔JWT ✔Spring Security ✔OAuth2 ✔Keycloak ✔DevOps ✔Docker ✔Kubernates ✔CICD ✔Hibernate ✔JPA, ✅ Leverage AI tools such as ChatGPT, GitHub Copilot, and TabNine to generate boilerplate code. ✅ Develop Cloud-native and Microservice architecture with Java, Spring, AWS, and Kubernetes. ✅ Integrated payment solutions like Stripe (subscription, invoicing, product, pricing), RIA, and Instant Cash Money Exchange House APIs to ensure seamless and secure payment processing. ✅ Integrate SonarQube to maintain code quality, detect potential bugs, and security issues. ✅ Write well-documented, well-tested, and production-ready code. ✅ Emphasize using AI tools to: 1. Translate business rules into clean, testable APIs, and can instantly scaffold database models, middleware, workflows, and unit tests. 2. Generate boilerplate code, complex queries, optimize code, fix bugs, and improve productivity by 80%. 3. Code Generation & Completion, Rapid Endpoint Generation, Code Review & Quality Assurance 4. Schema & ORM Modeling: From plain-English data requirements, generate SQL/ORM models (Sequelize, SQLAlchemy, TypeORM) and migration scripts. CORE COMPETENCIES: ✅ Java, Spring Boot, Spring MVC, REST, Kotlin, Hibernate, JPA, LDAP, Okta, Maven. ✅ Spring Cloud (Eureka, API Gateway, Circuit Breaker, LoadBalancer, Rate Limiter, Retry). ✅ Websocket, Swagger, JUnit, Mockito, Apache Camel, GraphQL, QueryDSL, Flyway, Spark. ✅ CI/CD, Agile, JIRA, ELK, Kibana, Grafana, Apache NiFi, ETL. ✅ AWS (EC2, ECR, ECS, EKS, RDS, Beanstalk, S3, IAM, VPC, CloudFormation, SQS, SNS). ✅ Javascript, React, Angular, AJAX, JQuery, TypeScript, JSP, Thymeleaf, Bootstrap, CSS, HTML, ✅ MySQL, Oracle, PostgreSQL, MariaDB, MongoDB, Partition, Replication, Indexing, Sharding. ✅ IntellijIDEA, Eclipse, VSCode, Toad, pgAdmin, DBeaver. Let’s connect to discuss how I can contribute to your team’s success.
    Featured Skill Swagger
    ChatGPT
    Kubernetes
    Spring Cloud
    Microservice
    Hibernate
    Websockets
    Spring Security
    RESTful API
    Docker
    Java
    Spring Boot
    API Integration
    API Development
    Apache Maven
    Apache Kafka
  • $55 hourly
    • 5.0/5
    • (10 jobs)
    I am an API Documentation Specialist for FinTech, including payment processors and investment management. As an Expert-Vetted freelancer on Upwork, I rank in the top 1% of technical writers. I’ve appeared on podcasts like Knowledge Base Ninjas (see video in profile) and collaborate with industry leaders like Scott Abel to train tech writers. I help companies transform their API documentation into the definitive "single source of truth" while translating complex API workflows into clear, actionable user guides that bridge the gap between business processes and technical execution. What I Offer: * FinTech Expertise: In-depth knowledge of payment processors and investment management. * API Docs Beyond Swagger: Expert in charting API flows and documenting sequences that mirror business processes. * AI-Equipped Documentation: Ensuring content is semantically rich and queryable for advanced retrieval needs like knowledge graphs. * OpenAPI Design & Testing: Extensive experience in API design, testing, and documentation that aligns with modern development practices. * Proven Training Success: Developed and delivered a profitable API documentation course, grossing over $20k independently, covering both technical and instructional content. Deliverables I Can Provide or Create for You: - Comprehensive user guides and product manuals - Detailed API documentation - Clear SDK documentation - Developer guides and tutorials - Training material on technical topics - Informative knowledge base articles - Well-structured style guides My API documentation process includes: - Analyzing the OpenAPI spec and existing guides to understand the API's business domain. - Diagramming domain models to capture key entities and relationships. - Testing the API in a sandbox environment to ensure accuracy. - Exploring API flows and user journeys (e.g., UI interactions where applicable). - Revamping API references by thoroughly testing examples and addressing deviations. Tools and Technologies I Excel In: - Programming frameworks: Node.js, React, PostgreSQL, SQL, and Python basics - Docs-as-code tools/formats: Markdown, Visual Studio Code, and Git - API Design & Testing Tools: Swagger Editor, Postman, and cURL - API Documentation Tools: Redocly, Stoplight, ReadMe, and Gatsby - Project Management & Collaboration: JIRA, Confluence, Slack, GitHub Book a Consultation: You can schedule a consultation with me by clicking the "Book a consultation" button. For a detailed overview of my process and how we can work together. I've also attached my general "Consultation process.pdf" as a template for how the engagement can get started. Flexible Engagement Across Borders: I’m a global freelancer collaborating with clients from various countries. I offer flexible meeting times to accommodate your schedule and ensure our discussions are convenient for you. Additionally, I excel at asynchronous communication, providing clients with regular visibility and progress updates through written reports between meetings. This approach fosters effective collaboration and keeps everyone informed.
    Featured Skill Swagger
    React
    Node.js
    Technical Writing
    Financial Trading
    Markdown
    Payment Processing
    FinTech
    API Documentation
  • $60 hourly
    • 4.8/5
    • (139 jobs)
    Hey guys, I am Alex - founder of Springs - Top-50 AI Agencies on Upwork 👋 Springs is an international company specialized in AI solutions development with over 10 years of experience. We help our clients achieve their business goals by delivering useful software, AI, and ML solutions through our cutting-edge knowledge. The Headquarters is located in Barcelona, Spain. Our services: 🔹Tech Consultancy 🔹Discovery Phase 🔹UI/UX 🔹Web development 🔹Mobile development 🔹AI/ML solutions 🔹DevOps 🔹Support and Maintenance Industries expertise: 🔸 Artificial Intelligence 🔸 Computer Vision 🔸 Education 🔸 FinTech 🔸 Logistics & Transportation 🔸 Sales & Marketing 🔸 Retail 🔸 Real Estate Why Springs? 🔷 Honesty is our priority. We believe that trust is a key point for a long-term and successful partnership. 🔷 We make a deep Discovery phase before starting any project making sure we have a full vision of what should be delivered. 🔷We use standardized security practices & requirements during the development and quality assurance phases. Our Approach: 🔸Our experts employ globally recognized best practices to thoroughly analyze the market and business objectives, providing a comprehensive perspective for each project. 🔸Our engineers leverage their profound knowledge of AI, ML, mobile, data, and cloud solutions to create cutting-edge digital products that drive business enhancements across various industries. 🔸Our delivery approach is customized to breathe life into transformative digital enhancements. We meticulously guide each project through a comprehensive application development process. 🔷Technologies we use: • Javascript • MERN, MEAN • Node, Express, Sails, Nest, Next, Nuxt • React, Redux, Babel, Vue, GatsbyJS, Angular, AngularJS • Typescript • React Native, Dart, Flutter, Swift, Kotlin, iOS, Android • Python, Django, Fast API, Pandas • Pytorch, TensorFlow, Keras, Whisper, OpenCV • Langchain, Pinecone, ChromaDB • GPT 3, GPT 3.5, GPT-4, GPT-4o, GPT-4 Omni, OpenAI, LLaMA, Gemini (Bard), T5, Roberta • DALL-E, MidJourney, Stabble Diffusion, Hugging Face • NNs, RNNs, LSTM • XGBoost, LightGBM, CatBoost • Proximal Policy Optimization (PPO), DDPG, Q-Learning • OpenAI Codex, Google AutoML, DataRobot • ROS (Robot Operating System), IBM Watson, CLIPS • Linear Regression, Decision Trees, SVM • YOLO, Faster R-CNN, Mask R-CNN • DeepSpeech, Jasper, Kaldi, XLNet, T5, ERNIE • ChatGPT integration • GraphQL • Socket.io • Amazon Connect, MWS, AWS, EC2, S3, Lambda, DynamoDB • Firebase, Google Filestore • MySql, PostgreSQL, MongoDB, MariaDB • Progressive Web Applications (PWA) • Stripe API, Paypal API, Google Maps API, Mapbox API, OpenAI API • Docker, Kubernetes Our Behance profile: behance.net/m_i_a_t_e_r_i_o Springs cares about code styling, modern standards, and the productivity of the project implementation. That is why we do constant code reviews, modifications, and automation tests to ease the app release as well as possible. At the same time, our Team Leads and CTO are always ready to mentor, help and support our talented developers. They also provide on-demand tech consultancy to our partners to find the best mobile or web app development approach for the concept. The product quality is our top priority, We always start with proper architecture planning, database structuring and other preparations for further app development and timely delivery. By the way, we do compulsory code investigations. If we work with the existing code written by other devs/teams we always check if there is a possibility to use it. We don’t just focus on the app development process but we think about the future. We support the most data-driven scopes like logistics and retail accelerating their digital transformation. So whether you need a custom mobile ERP or eCommerce web development we’re the right guys to outsource your project to. Keywords that you can use to find us: User Interface, User Experience, Design Thinking, Interaction Design, Designer, UI, UX, Web-design, Mobile Design, Mock-up, Design Expert, Design Gugu, App Design, Application design, platform design, Adobe, Photoshop, Illustrator, Graphics, Graphic Design, Visual Design, Creative, Material Design, Guidelines, Android, iOS, Desktop, iPhone, Application, Usability, Website, Logo, Logotype, Responsive, Adaptive, Website Prototyping, Wireframe, Update, Solutions, Long term, Effective, Productive, Experienced, Job, SAAS, Hire, Team Leader, Testing, A/B Testing, Sketch, Advertising, Branding, Agency, Identity, Identity, Design Thinking, Management, Art Director, Head of Design, Search, Digital, Landing, Promo, Redesign, Developing, Creation, Page, Corporate, IT, Tech, Technology.
    Featured Skill Swagger
    AI Agent Development
    Chatbot
    Chatbot Development
    Natural Language Processing
    Data Science
    API
    Web Development
    ChatGPT
    Machine Learning
    Artificial Intelligence
    Node.js
    API Integration
    Python
    React
    JavaScript
  • $55 hourly
    • 4.9/5
    • (79 jobs)
    🥇 Top-Rated Plus (Top 3% on Upwork) 🥇 Technical Writer specialized in creating API Documentation, SDK Documentation, User Guides, Tutorials, and Developer Portals. Your project benefits from over 8 years of writing experience bolstered by 15+ years strong background in Software Development, Software Architecture, Technical Project Management, and Engineering. A skilled Software Architect with more than 14 years of professional experience in various aspects of Software Development. With extensive experience in different development technologies, I have worn the Technical Lead Hat on several projects over the years and worked on several technical documents, like Requirement/Functional Specification documents, for software projects/products. - Helped +25 organizations reduce support tickets and churn by 30% with high-quality documentation. - Proficient in creating developer portals containing API documentation and user guides with Readme, Swagger, Docusaurus, Sphinx, Mintlify, Stoplight and Gitbook. - Highly skilled in testing and validating API documentation using Postman. - Experienced in running and testing SDKs. - Specialized in creating API documentation using the OpenAPI specification. - Comfortable with JSON, YAML, REST APIs, Markdown, HTML, and CSS. - Available to work with internal teams using different types of communication tools like Slack and Microsoft Teams. By choosing me you will achieve: ✅ Clear and concise API Documentation that considers your branding and stands out in style. ✅ High-quality technical content focused on your target audience. ✅ Professional documentation management and maintenance. ✅ Quick turnaround on projects. ✅ Commitment to overdeliver, respecting the deadlines imposed by you. ✅ Increased and highly efficient communication Technology familiarity - Javascript, C/C++, Python, C#, Azure, AWS, PHP, HTML, SQL, Web Services, REST, JIRA, Confluence, MS Project, among others.
    Featured Skill Swagger
    Software Documentation
    Article Writing
    OpenAPI
    Content Creation
    Content Writing
    Apiary
    Report Writing
    Technical Report
    User Manual
    Technical Documentation
    Instruction Manual
    API Documentation
    Technical Writing
  • $35 hourly
    • 5.0/5
    • (9 jobs)
    Portal for developers, OpenAPI specifications, Documentation templates, Software Architecture docs, Developers and Admin guides from scratch Production guides System architecture diagrams and description Multiple markets projects with localisation Translation and proofreading of docs API Documentation Rest API SOAP GraphQl Desktop applications Health care systems HL7 interfaces Software integrations
    Featured Skill Swagger
    OpenAPI
    API Documentation
    Translation
    Instruction Manual
    Postman
    Technical Writing
    QA Testing
    Java
    API
    Software Documentation
  • $25 hourly
    • 4.7/5
    • (54 jobs)
    I am a professional full-stack developer with over 8 years of experience in developing web applications and RESTful APIs using NodeJS. In addition to my expertise in backend technologies, I am also proficient in single-page frontend frameworks such as React and VueJS, along with their respective ecosystems. My expertise includes but not limited to: - NodeJS (both Typescript and Javascript) - ExpressJS, NestJS, Sails.js - MongoDB, MySQL, PostgreSQL - Sequelize, TypeORM, Prisma - Bootstrap, Tailwind, MUI - React, Vue, Angular - Stripe, Paypal, Braintree - AWS (EC2, App Runner, RDS, Lambda, API Gateway, etc.), Google Cloud, Azure
    Featured Skill Swagger
    Twitter/X Bootstrap
    Amazon EC2
    HTML
    Backbone.js
    MySQL
    AngularJS
    Ruby on Rails
    jQuery
    Node.js
  • $25 hourly
    • 4.8/5
    • (17 jobs)
    🚀 Top Rated Plus Upwork Freelancer 🏆 17+ Successfully Completed Projects 💰 $100K+ Total Earnings ⏰ 5,000+ Hours of Experience Expertise Overview: With over 7+ years of hands-on involvement in the technology sector, I bring extensive proficiency in developing innovative solutions and delivering top-tier services to corporate clients spanning diverse industries. Wide-ranging Industry Insights: Throughout my extensive career journey, I've had the privilege of working across a spectrum of industries including Fintech, Healthcare, Information Technology, Insurance, Construction, Consumer Goods, Education, and Entertainment. This breadth of experience has endowed me with a profound understanding of industry-specific nuances and opportunities. Tailored Web Solutions: My core specialization lies in crafting tailored solutions to cater to diverse web development requirements, encompassing Business Intelligence and Analytics, Content Management, CRM implementation, E-commerce platforms, ERP solutions, Fintech software, Intranet development, Inventory management systems, Learning management systems, Mobile applications, Supply chain management software, and Web portal development. Holistic Service Range: My services span Development, Software Consulting, Digital Transformation, UX/UI design, Customization, Testing, Integration, Legacy system modernization, Platform migration, DevOps, and IT support. I endeavor to deliver comprehensive solutions aimed at bolstering business growth and operational efficiency. Proficiency in Cutting-Edge Technologies: CMS: Drupal | WordPress | Shopify | Craft CMS | Umbraco | Sitefinity | HubSpot | Kentico E-commerce: Shopify | Magento | Drupal Commerce | Opencart | WooCommerce Frameworks: .NET | Laravel | CodeIgniter | Zend Framework | Symfony Backend Programming Languages: PHP | JavaScript (Node.js) | Visual Basic Frontend Technologies: JavaScript | jQuery | AngularJS | ReactJS | VueJS | NextJS Stylesheet: CSS | CSS3 | SASS | LESS | Stylus | Tailwind Mobile Development Platforms: React Native | Flutter | Flutter Flow | Kotlin | Swift Databases: MS SQL Server | MySQL | PostgreSQL | Oracle Database | MongoDB Cloud Services & Platforms: Amazon Web Services (AWS) | Microsoft Azure | Google Cloud Platform (GCP) Business Applications & Productivity Tools: Office 365 Suite | Power BI | Power Apps | Power Automate | Salesforce Technologies: Contentful, Cloudera, Zoominfo, Native App Development, Shopify, Ember, Salesforce Marketing Cloud, Pardot, Bash, Ingeniux, Asana,Master Data Management, Salesforce Sales Cloud, Fulfilment, Drupal, Git, ADOBE Marketing Cloud, IBM BPM, Machine Learning, Data Governance, Stripe, Jira, Watson, MS Off. Project Server, Umbraco, Web API, Microsoft Azure, Backbone.js, Mobile Apps, Aura, PandaDoc, WordPress, Mailchimp, Sterling B2BI, Splunk, React Native App Development, Flutter App Development, FlutterFlow App Development, Kotlin App Development, Swift App Development, Javascript, Kentico,Eloqua, API, Vue, Alexa, Mulesoft, Zapier integration, Pentaho, IBM MobileFirst, ServiceNow, Personalization, SF Pardot, MongoDB, Express.js, .NET, Quickbook Online, Codeigniter, Silverlight, Blazor, Salesforce Analytics Cloud, Casandra & Elastic Search, IBM Cognos, Marketo, CSS3, IBM Cloud Private, Twilio, G Suite, Experience Cloud, Sharepoint, iOS Development, HTML5, Salesforce Apps Cloud, Mandrill,SAP, C#, Symphony, Rest, Cloud AI,Sterling OMS, PHP, Salesforce Service Cloud, IBM Bluemix, Rackspace, Lead Management, Tableau, Elcom, Linux, Customer 360, Agile SCRUM, Node.js, AI Chatbot, JSON, Shopify Plus, Pimcore, Hadoop, CiviCRM, Apple Watch, IBM Business Monitor (BAM), SOAP, CraftCMS, Zend, Data Studio, Cesium, Oracle MAF, Oracle, SASS, Angular, HubSpot, Dynamics AX, CPQ, Laravel, Salesforce, Digital Business Automation, Java, WMS,Amazon Web Services, HelloSign, jQuery, DNN, Azure Machine Learning, Udeploy, Ruby on Rails, Cloud Foundry, Swift, Postgres, QuickBooks, Salesforce Exact Target, Oracle ESB, Digital Analytics, Hive, Apache/NGINX, NetSuite, ExpressionEngine, Dell Boomi, integrations, Episerver, IoT Development, PayPal, Toky, Salesforce Community Cloud, Salesforce Commerce Cloud, APEX, Gulp/Grunt/Yarn, DocuSign, BizTalk - Apigee, TensorFlow, XML, Fusion Middleware, Lightning Web Component, GIT, SAP Hybris, Progress Sitefinity, Android, Dynamics CRM, Sharepoint, App Connect, MySQL, SOAP APIs, React, Litmus, API Connect, Salesforce Commerce, DataPower, Amazon AWS, RedHat Jboss, Robotic Process Automation, LinkedIn sales navigator, NPM, Sitecore, Salesforce IoT Cloud, Magento, Knack, Zapier, Webmerge, Zuora, Kontent AI
    Featured Skill Swagger
    Framer
    WebRTC
    Twilio
    Back-End Development
    Front-End Development
    MERN Stack
    Angular
    Web Development
    OpenAI API
    ChatGPT
    MongoDB
    JavaScript
    Node.js
    React
  • $36 hourly
    • 5.0/5
    • (113 jobs)
    I help startups and businesses bring their SaaS ideas to life—fast. With over 15 years of experience, I’ve built 85+ MVPs and prototypes, helping founders launch, validate, and scale their SaaS products with confidence. Whether you're starting your SaaS from scratch or pivoting an existing product, I specialize in turning business goals into production-ready web applications. My stack of choice? Python + Django on the backend, React on the frontend, and PostgreSQL for solid data handling. I also integrate OpenAI/GPT-4 to deliver intelligent features like chatbots, content generation, or smart automation. 💡 Here are some case studies Dogvacay (Acquired by Rover 50M+ deal), we were involved from the day one CompTool built it from scratch, 1000+ clients at this moment FairyGodBoss built from scratch to series A round ReviewRamp helped the client from day one to the phase the business was sold for 4M I focus on clean architecture, clear communication, and business outcomes—not just code. If you need a reliable technical partner to build your SaaS platform, MVP, or AI-enabled prototype, let’s talk. 📈 Let’s build something that moves the needle for your business. Here is the complete list of technologies we use 1. Backend: Python frameworks: Django Flask Desktop apps using pyqt tkinter Kivy Ruby frameworks: Ruby on Rails PHP Frameworks: CakePHP Zend Yii Symfony CodeIgniter Laravel 2. DB: MySQL MongoDB PostgreSQL SQLite 3. Front end: HTML/HTML5/XHTML Twitter Bootstrap CSS/CSS3 LESS SASS Compass 4. JavaScript: React.js Angular Node.js express.js webSockets Backbone.js jQuery CoffeeScript Grunt.js PrototypeJS UnderscoreJS 5. APIs: Payment APIs: PayPal , Stripe , Authorize.net , WePay Mailing APIs: MailChimp , Mailgun , SendGrid, Mailjet , Click2Mail Mapping API: Google Maps , Bing , Mapbox Voximplant API Rest API development Social APIs: Google , Facebook , Twitter, Instagram , Linkedin 6. Mobile: iOS: ObjectiveC, Swift, SwiftUI, RxSwift, Swinject Android: Java, Kotlin, RxJava, Dagger 2, Koin ReactNative: ReactNative, ReactNative/expo, Redux, Reanimated Flutter 7. QA Automation: Selenium WebDriver , TestNG , cypress , Appium , Apache JMeter(for stress and load testing) , Postman(for API testing), Swagger(for API testing) QA Manual: Black box testing testing, Test case creation and execution(Testlink), Gray Box testing(PostgreSQL, MySQL), API testing(Postman,Swagger), Performance testing(Jmeter,BlazeMeter), Stress testing(Jmeter,BlazeMeter), Load testing(Jmeter,BlazeMeter). 8. Project Management tools: Agile/Scrum, Jira, Asana, Trello, Pivotal ... (Flexible to use whatever you prefer) 9. UI/UX, Graphic Design, Product Design , Photoshop , Adobe Illustrator , Sketch 10. Caching: Memcache, Varnish, Redis, custom caching systems 11. Messaging: Twilio , RabbitMQ 12. Amazon: CloudWatch, SES, S3, Lambda, Elastic Beanstalk, Elastic Cache, Route 53, RDS, Amazon Product Advertising API, VPC (Virtual Private Cloud), EC2, API Gateway, CloudFront 13. Amazon advanced We have been working with AWS for around 5years now. We have worked with EC2, Elastic Beanstalk, ElastiCache, RDS, Code Pipeline, Route53, S3, EBS, CloudFront, Api Gateway, CloudWatch, CloudFormation, IAM users and roles, Cognito, Elasticsearch, SQS, SNS (both for SMS and push notifications), SES, AWS lambda, AWS VPC For DevOps stuff, we use Jenkins, Teamcity, AWS Code Pipeline, Gradle, Maven, Git, Docker, Kubernetes and Ansible, Heroku (Postgresql, redis, cloudamqp). CI/CD: We have worked with CI/CD implementations using Jenkins, Teamcity(JetBrains), Azure pipeline, Bitbucket pipeline, AWS Code Pipeline, Gitlab CI. If no specific requirement is present, we prefer to work with TeamCity. 14. Firebase - We have used Firebase CLI, Firebase Authentication, Firestore, Cloud messaging, Crashlytics, Hosting, Dynamic linking, in-app messages, and a real-time database.
    Featured Skill Swagger
    Full-Stack Development
    Product Development
    Custom Ecommerce Platform Development
    Minimum Viable Product
    Amazon Seller Central
    Machine Learning
    Python
    Flask
    React
    Django
    ChatGPT
    Google Chrome Extension
    SaaS Development
    Sass
    Web Application Development
  • $12 hourly
    • 4.9/5
    • (5 jobs)
    HTML, CSS, JavaScript, JQuery Core Java (8 & 11), JSP, Servlet, Junit, and Mockito, Hibernate, MySQL, AWS (SQS, S3 Bucket, DynamoDB), Kafka & Web Services (REST & SOAP), Spring Boot, Microservices, Spring Framework (Core, AOP, WebMVC, JDBC, ORM & ORM), Lombok, MySQL, Docker, Git, etc. Deployment of Application on Windows / Linux Server using Docker Payment Gateway Integration using 3rd party API Online Transaction Processing (OLTP), Webhook handling, Payout handling, etc
    Featured Skill Swagger
    Servlet
    Apache Kafka
    Docker
    Microservice
    JavaScript
    Java Persistence API
    Spring Boot
    Apache Maven
    Spring Framework
    Web Service
    Java
    Angular
    Hibernate
    Spring MVC
  • $35 hourly
    • 5.0/5
    • (23 jobs)
    With more than 15 years of experience in technology and development, I have contributed to many global technological initiatives, startups, and enterprise successes. This journey has equipped me with a diverse array of skills and has allowed me to contribute meaningfully to the tech industry. Core Technological Expertise Microsoft Technologies: I am an experienced Microsoft developer who specializes in ASP.NET Core, MVC, WebAPI, Razor, and the groundbreaking Blazor framework. This experience includes Blazor Server, Hybrid, and MAUI hybrid apps. Front-End Development: I have honed my skills in leading front-end frameworks like Angular, React, VueJs, and Bootstrap. Among these, I take pride in my proficiency with MudBlazor – a lesser-known but highly effective tool, I consistently deliver top-quality results. Data Solutions: My expertise spans robust databases like SQL Server, Azure Cosmos, and Postgres, ensuring businesses benefit from scalable and resilient data architectures. JavaScript & TypeScript: I know front-end and back-end technologies. I offer a diverse skill set to projects, having developed web interfaces in JavaScript and TypeScript and backend solutions in Node.js. CSS Frameworks: While usefulness is important, aesthetics are too. I use CSS, notably the Tailwind CSS framework, to create stunning, fast websites. A Tradition of Innovation I've worked with high-management teams and developers in the Middle East, UK, USA, Canada, and Europe to develop many applications. I've worked on many projects, each of which has shaped my career. Let me highlight some key areas of my expertise: Significant Contributions in Vast fields Highly Scalable Backend Solutions: The hallmark of my work is the creation of intricate, scalable backend systems. My expertise extends to designing architecture that can manage significant loads and ensure optimal performance even in demanding scenarios. API Development: APIs, in my perspective, serve as the key connections that enable modern software. I've been instrumental in developing APIs that facilitate communication between various components, facilitating seamless integration and data exchange. Public Websites: One of my strengths is creating public-facing websites that captivate users and effectively represent your brand. While I emphasize user-friendly designs, I equally prioritize representing the brand's ethos effectively. Administration Systems: Managing any digital ecosystem requires efficient administration. Over the years, I've developed top-quality administrative systems that intuitively simplify intricate tasks, ensuring that oversight and management are both effective and efficient. Data Reporting Platforms: I've been at the forefront of developing platforms that turn data into actionable insights. My platforms offer customizable, interactive reports to facilitate comprehension and analysis. Third-party Integration: In this age, seamless third-party integration is frequently required. I have effectively integrated multiple third-party APIs, facilitating seamless interactions and extending the functionality of applications. Agile Methodologies for Success One thing I've truly come to value over the years is the power of agile methodologies, which have contributed significantly to my consistent success. Here's how I utilize these strategies: Precision in Estimation: Agile practices afford me precision in estimating projects, which translates to realistic timelines and budgets. Effective Time Management: Emphasizing efficiency, the agile methodology aids me in task prioritization, ensuring timely deliveries. High-Quality Products: By following agile principles, I ensure that the final product not only meets but often exceeds client expectations, setting a gold standard for excellence. Investing in Startup Success Over my career, I have collaborated with more than fifteen firms and played a critical role in their success. When it comes to startups, my approach is multi-faceted. Here are some of the ways I have factored into the startup ecosystem: Guiding Product Innovation: The energy in startups? It's infectious. I genuinely enjoy guiding entrepreneurs, helping them fine-tune their ideas, prioritize the right features, and lay down a clear road-map for product development. Technology Consultation: The tech landscape is ever-evolving, and making the right choices is critical. Leveraging my years in the industry, I strive to offer insights that align technology decisions with a startup's goals and vision. Navigating Challenges: Startups always encounter unique challenges. I help young businesses solve technical issues and make smart decisions using my skills. I help organizations choose the finest solutions for their vision and goals as an experienced IT specialist. Prepared for Future Partnerships As technology changes, I'll keep challenging myself and encouraging creativity. I can help startups and established companies.
    Featured Skill Swagger
    Hybrid App
    Unreal Engine
    Unity
    AI Model Integration
    Artificial Intelligence
    Mobile App
    API Development
    NGINX
    Stripe
    Microservice
    WebAssembly
    .NET Core
    Azure App Service
    Blazor
    C#
  • $33 hourly
    • 4.5/5
    • (47 jobs)
    🚀 Microsoft Certified Full Stack Web Developer | 10+ Years of Expertise 🚀 I have developed systems used by millions, including implementing Authentication & Authorization with Azure B2C for Hello Alleva & Hyens & Company. As a Top-Rated Upwork freelancer, I’ve earned $200K+ in the last two years, maintaining 100% 5-star ratings, showcasing my credibility, expertise, and commitment to excellence. 🔹 Mastering the Full Stack – .NET (Core, MVC, Web Forms, MAUI, Blazor), Angular, React, JavaScript 🔹 API & DevOps Expert – Seamless integrations, scalable solutions, and CI/CD pipelines 🔹 Database Proficiency – MySQL, SQL Server, optimized for performance 🔹 AI & Automation Specialist – Expertise in AI-driven development, ChatGPT, Copilot, and intelligent automation 🔹 Cloud-Ready Developer – Hands-on experience with Azure & AWS 🔹 GitHub & Collaboration – Version control, open-source contributions, and efficient teamwork 🔹 UI/UX Excellence – Bootstrap, Materialize CSS & third-party API integrations (Twilio, etc.) 💡 Innovative. Results-Driven. Client-Focused. Passionate about solving complex problems, delivering high-quality solutions, and ensuring business success through cutting-edge technology. Portfolio: zeeshanwebdev.github.io
    Featured Skill Swagger
    Linux
    Database
    Blazor
    .NET Core
    AI Development
    Microsoft Azure
    Bootstrap
    Azure DevOps
    ASP.NET Web API
    TypeScript
    JavaScript
    jQuery
    Microsoft SQL Server
    React
    Angular
  • $45 hourly
    • 5.0/5
    • (30 jobs)
    A reliable and trustworthy full-stack developer with 5+years of experience. My area of expertise includes website creation, SaaS, web development. My tech stack includes and is not limited to: ✔ HTML5/CSS3(W3C standard); ✔ Javascript (Angular, React.js, Vue.js, Node.js, Ajax, jQuery); ✔ Front-end frameworks (Bootstrap, Tachyons, etc.) ✔ Python ✔ databases ✔ AWS
    Featured Skill Swagger
    Front-End Development
    Flask
    Vue.js
    Angular 2
    Bootstrap
    PHP
    Python
    Node.js
    React
  • $15 hourly
    • 4.9/5
    • (228 jobs)
    🏆 TOP-RATED AND CERTIFIED ------------------- ⭐ 8+ years of experience in delivering full stack development services ⭐ Full stack developer tested on the Back-End and Front-End frameworks ⭐ Built excellent web platforms with thousands of users ⭐ Worked on 45+ full stack SaaS application development ⭐ Delivered at all levels from startup apps to solutions for public companies Thank You for viewing my profile ➖➖➖➖➖➖ I am new to this platform but not new to the IT world!!! ⭐I am expertise in many programming skills ⭐ CRM ➖➖➖ Salesforce Back-end ➖➖➖➖ 🛠 PHP [with the framework: Laravel, Yii, CakePHP, Codeigniter] 🛠MongoDB, MySQL, DynamoDB, PostgreSQL. Front-end ➖➖➖➖ 🛠 WordPress, Magento, JavaScript, Vue.js, React.js, Angular.js, Jquery, Ajax. 🛠 HTML, HTML5, JSON, XML, Rest API. 🛠 CSS, CSS3, Bootstrap, Responsive. Mobile App ➖➖➖➖ 🛠 React-Native, Ionic, Apache Cordova, IoT, Socket.io, iOS &amp; Android What you will get? ➖➖➖➖➖ 🎯 Great quality work. 🎯 Always stick to the deadline. 🎯 Instant response. 🎯 Trustworthy developer. What you will not get? ➖➖➖➖➖ 🚫 Poor quality work. 🚫 Never follow the deadline. 🚫 Delay in response. Thanks a lot for visiting my profile You are invited to watch my portfolio. Have a good day. 🙂
    Featured Skill Swagger
    Salesforce Lightning
    Salesforce
    Flutter
    MERN Stack
    React Native
    Django
    Node.js
    Angular
    JavaScript
    Python
    PHP
    React
    WordPress
    Flask
  • $22 hourly
    • 4.8/5
    • (568 jobs)
    I am a top-rated plus full-stack web developer with over 10 years of experience specializing in PHP and CMS-based development. Throughout my career, I have successfully completed 567 projects, contributing a total of 8140 hours of work. My expertise lies in creating custom PHP websites, web portals, and web applications that meet diverse client needs. As a full-stack PHP developer, I have delivered a variety of projects characterized by visually appealing, user-friendly UI designs and advanced functionalities. I possess hands-on experience with popular frameworks such as Laravel, CodeIgniter, Yii, Zend, Symfony, and CakePHP. This allows me to build innovative, highly customized, and robust web solutions that are both feature-rich and modular. My Technical PHP Development Expertise: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ As a full-stack PHP developer, I have decent expertise in PHP development & custom web development technologies: ✔ Programming Language(s): PHP ✔ PHP Web Development Frameworks: Laravel, CodeIgniter (CI), Yii, Zend, Symfony, PHP-MVC, CakePHP ✔ PHP Web Development CMS: Joomla, Magento, Drupal, Wordpress ✔ Tools: Prototype, JQuery, Yahoo UI Library ✔ Data Management: ✔Queue: RabbitMQ, ActiveMQ, Amazon SQS ✔Server Technologies: Linux, Ubuntu, RedHat, FreeBSD, Suse, AWS, Rackspace Cloud, Linode, Heroku, and Google App Engine ✔ Custom Web Development Frontend Stack: ✔ Third-Party APIs Integration: Web Application Development Services: ✔ Laravel ✔ Codeigniter ✔ API Integration ✔ React frontend ✔ PHP Application Customization ✔ Web Application Frontend Development ✔ Web Application Admin Panel Development ✔ Frontend Bug Fixing ✔ Payment and SMS Gateway API Integration ✔ MySQL Database ✔ Core PHP Application Development & Customization ✔ Single Page Application Development PAST EXPERIENCES AND COMPETENCIES* ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ ✔SaaS based web applications development ✔Classified website development ✔Travel Portal development ✔On demand service website development ✔Marketplace and multi-vendor website development ✔Crowd funding websites - Crowdsourcing websites ✔Real Estate Portal development ✔Custom Ecommerce website development ✔Job Portal development ✔Inventory management systems ✔B2B website development PHP Development Solutions Expertise: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ Being a reputed PHP development company, we deliver cost-effective, innovative, enterprise-grade products and solutions using the latest PHP development & technological impediments to provide a competitive advantage to businesses. ✅ eCommerce Solutions ✅ ERP & CRM Development ✅ Project Management System ✅ eLearning Portal Development ✅ Electronic Medical Record System - EMR/EHR ✅ HRM/HRIS, Payroll & Employee Management ✅ Supply Chain (SCM) & Inventory Management ✅ Social Networking & Dating Portal Development ✅ Online Ordering ✅ Hotel & Restaurant ✅ Point of Sale – PoS ✅ Real Estate Website Development ✅ Laundry Service ✅ School Management ✅ Hospital Management ✅ Recruitment & Job Portal ✅ Auction & Comparison Portal ✅ Hotel/Flight Reservation System How do we communicate and report? ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ ✔Upwork Message Board (Audio, Video, Chat Messenger) ✔JIRA ✔Azure DevOps Server ✔Asana ✔Trello ✔Zoho Projects
    Featured Skill Swagger
    IOTA
    FinTech
    CRM Development
    Social Networking Development
    Ecommerce
    Financial Trading
    Web Development
    CodeIgniter
    Laravel
    SaaS
    AI Marketplace
    Elearning
    SaaS Development
    Moodle
    PHP
  • $18 hourly
    • 5.0/5
    • (41 jobs)
    I'm an expert in React Native. I have many happy clients, working with startups and companies. Please see my customers' reviews to know my quality and time management skills. The most important thing about a successful project is to bring customer satisfaction! You are serious at work and looking for a long-term partner for your projects. Please choose me. My working time is from 8:00 am to 11:00 pm GMT+7. Please get in touch with me via message for further discussion. Thanks & Regards, Quang Service from the heart
    Featured Skill Swagger
    Expo.io
    Push Notifications
    iOS Development
    Mobile App Development
    Chat & Messaging Software
    User Profile Creation
    Firebase
    React Native
    Hybrid App Development
  • $50 hourly
    • 4.9/5
    • (52 jobs)
    Experienced Full-Stack Developer | Crafting Excellence for 14+ Years 💻✨ Hello there! 👋 With over 14 years of hands-on experience, I specialize in creating top-notch digital solutions that captivate users and drive success. From startups to established brands, I've crafted 60+ projects from scratch and revamped existing ones. Let's team up and bring your project to life! 🚀🌟 Tech Landscape: In my toolkit are an array of technologies including: ✓ .NET (All Versions) ✓ C# ✓ ASP.NET (All versions) ✓ Angular (Versions 2 to 15) ✓ React ✓ TypeScript ✓ MS-SQL, MySql and PostgreSQL ✓ Entity Framework (All versions) (DB-first, code-first and model-first approaches). ✓ Html, CSS, Flexbox, TailwindCss ✓ JavaScript (jQuery, lodash, underscore, moment, HighCharts) ✓ IdentityServer ✓ Bootstrap ✓ OOP and System Design ✓ Theoretical knowledge and practical experience with design patterns ✓ Asynchronous and multithreading development (TPL) ✓ Rest API design, architecture, implementation and integration ✓ GIT (VSTS, GitHub, bitbucket), SVN and TFS version control systems ✓ CSS/LESS/SASS, Bootstrap ✓ XML, XSLT, Serialization/Deserialization (XML, Binary, JSON) ✓ Kendo UI (JS and ASP.NET MVC wrapper) and DevExtreme ✓ SMS integration (Twilio) ✓ PayPal (Express Checkout (REST API) with Basic Client and Advanced Server integrations) ✓ Email integration (SendGrid, MailGun, Gmail, custom SMTP) ✓ SignalR ✓ Microsoft Azure (Azure SQL, Azure AD, Azure Functions, Azure Service Fabric, WebApp, ApiApp, Azure Storage, EventHub, Stream Analytics, Application Insights and others) ✓ WCF and WebServices ✓ LINQ and Dynamic LINQ ✓ Database architect and optimization including Microsoft SQL/T-SQL ✓ NoSQL (MongoDB, CosmosDB, DynamoDB) ✓ Caching (Redis) ✓ .NET Desktop (WinForms, WPF: MVVM, MVP) (beginner) ✓ Telerik and DevExress frameworks for WinForms and WPF I'm here to discuss how I can make your vision a reality. Feel free to reach out whenever you're ready. Cheers, Jahangeer
    Featured Skill Swagger
    Node.js
    Docker
    Next.js
    ASP.NET Web API
    C#
    React Native
    Angular
    TypeScript
    React
    RESTful API
    Responsive Design
    .NET Core
    JavaScript
    SQL
    ASP.NET Core
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