Hire the best Backend Rest API Freelancers in Warsaw, PL
Check out Backend Rest API Freelancers in Warsaw, PL with the skills you need for your next job.
- $99 hourly
- 5.0/5
- (51 jobs)
Hello! I am an expert Back-end Developer specializing in FastAPI and Hasura, along with PostgreSQL, MySQL, and MongoDB. My contributions to open-source code include NASA, Tensorflow, Meshtastic, and Python. My job is to turn your awesome ideas into reality as quickly as possible while keeping the backend perfect and the end product stable. I help people build their dream services and solve the problems they encounter with state-of-the-art solutions. Over the last 12 years, I have acquired extensive experience using a variety of languages to craft beautiful back-end systems, along with providing novel solutions, speed optimization, and cloud architecture, ensuring that it can scale globally. I have led the back-end development of ReskyuMe, PaGaLGuY, Easio, and Airbnb amongst many others. An extremely high level of reliability and responsibility is my guarantee, which is evident from all of my reviews being rated 5 stars! I have a deep knowledge of different architectures like x86 and ARM, which allows me to fully understand how different CPUs work, how memory is accessed, and how SIMD/vectorization can be exploited to speed up services. Technologies I use: ✅Languages: C, C++, Python, HTML, CSS, JavaScript ✅Frameworks: FastAPI, Hasura ✅Server Interfaces: REST, GraphQL, Websockets ✅DB Interfaces: SQLAlchemy, SQLModel, PyMongo ✅SQL DBs: PostgreSQL, MySQL, and other SQL-based DBs ✅NoSQL DBs: MongoDB, Cassandra, ScyllaDB ✅Version Control: Git & Mercurial ✅DevOps: Traefik, Nginx, Docker, Kubernetes, Apache, AWS, Google Cloud Platform, Microsoft Azure, Digital Ocean, GitHub Actions ✅Project Management: ClickUp, Trello, Github ✅Operating Sytems: Windows, Linux (Ubuntu, Debian, CentOS, etc.), macOS ✅Cloud Platforms: Amazon Web Services, Google Cloud Platform, Microsoft Azure, DigitalOcean, Linode, Hostinger, et al ✅Cloud Services: Cloudflare ✅LLMs: ChatGPT and self-hosted ones Vast knowledge of: ✅Software design and development ✅Different hardware platforms: x86 and ARM ✅Parallel processing: SIMD and Vectorization ✅Cloud Architecture, CI/CD ✅SQL query construction ✅NoSQL query construction ✅Object-Oriented Programming ✅Speed optimization ✅Usability ✅Security
Backend Rest API
Cloud EngineeringCloud ArchitectureCloudflareSQLAlchemyObject-Oriented ProgrammingDatabase OptimizationPerformance OptimizationMultithreaded, Parallel, & Distributed Programming LanguageAzure DevOpsDockerRESTful APIMySQLGraphQLPostgreSQLPython - $29 hourly
- 5.0/5
- (6 jobs)
I'm a Senior Full Stack Developer with 10+ years of experience in Full Stack development. 🏆 Certified Senior Full Stack Developer in React.js, Node.js, Next.js, Nest.js, ExpressJS 🏆 Top Rated Upwork Full Stack Developer React Node.js 💎 10+ Years of commercial experience as a Full Stack Developer 🏆 20+ Successfully finished projects on Upwork with 5 stars feedback 🕒 1500+ Total Working Hours on Upwork 🏆 Master's Degree in Computer Science I can provide development services: 💎 As Front End Developer - Creating responsive and user-friendly interfaces on React and Next.js. 💎 As Back End Developer - Building robust and scalable server-side applications and APIs on Node.js. It also could be NestJS backend or ExpressJS backend as I'm NestJS developer and Express JS developer, too 💎 As Full Stack Developer - Providing comprehensive solutions covering both front-end and back-end development, also working with MERN stack. Skills & Expertise: 🛠 Front-End Development - React, Next.js 🛠 Back-End Development - Node.js, Nest.js, Express.js 🛠 Database - MongoDB, Firebase, MySQL, PostgreSQL, Supabase 🛠 Programming Languages - JavaScript, TypeScript 🛠 Communication - RESTful APIs, GraphQL, WebSockets 🛠 Design Tools - Figma, Adobe XD, Sketch 🛠 Version Control - Git & GitHub & GitLab & Bitbucket 🛠 CI/CD - Jenkins GitLab CI 🛠 Project Management - Jira, Trello, Asana, Notion 🛠 Testing Frameworks - Jest, Mocha, Unit testing 🛠 Libraries - Bootstrap, Moment.js, Redux, Redux-toolkit, Redux-saga, Material-UI, React-query, Axios, Sequelize, TypeORM, Socket.IO, JsonWebToken, Formik, React Hook Fosm, ANTD, Storybook, Highcharts, RxJs; Tailwind CSS; React Twilio Why My Full Stack Development Solutions Stand Out: 📍 100+ successfully finished projects: SaaS solutions, Web applications (web apps), websites, landing pages, PWA, SPA, Admin Panels, CRM, ERP, E-commerce marketplaces, IoT, Proof of Concept (POC), MVP, machine learning, Booking platforms, Shopify apps, E-learning platforms, Finance apps, chatbot development, Stock trading app for day trading and others. 📍 Proven experience in domains: E-commerce, Healthcare, Real Estate, Education, Fintech, AI solutions, Management, Travel and Hospitality. 📍 Successfully integrated WebSockets, RESTful APIs, and third-party APIs such as: Stripe API, Zoom API, OpenAI API, ChatGPT, shopify plugin, capacitor vue, wordpress speed. 📍 Have proven experience with such authorization services: OAuth, JWT, OAuth2, Web Tokens As A Result, My Clients Got The Next Benefits: ✅ +20% Efficiency Increase: My work helps projects be delivered faster using streamline workflow and agile methods. I write code efficiently so products reach the market quickly. ✅ +30% User Engagement Enhance: My designs and responsive interfaces attract users and make them interact more, which leads to higher satisfaction and conversion rates that grow business. ✅ 100% Scalability & Performance: I build systems that can handle heavy traffic with fast performance and very little downtime. This supports your business operation success. ✅ 100% Custom Fit Solutions: I create tailor-made solutions that match each client's business needs, resulting in real improvements in productivity and ROI. ✅ 15% Cost Saving: By optimizing code and infrastructure, my solution reduces long-term maintenance costs and resource expenses, saving money for business. 🏆 As an Expert in Full Stack development, I have experience working as: React Developer, Front end Developer, Back end Developer, Full-Stack developer, Full Stack React Developer, JavaScript Developer, React JS Developer, React Web Developer, Nest.js developer, MERN Stack developer, Software developer, Web developer, SaaS developer, Full Stack developer React, Next.js Developer, Node.js Developer, WordPress developer, React Native developer, Mobile App developer, Python rest api developer, Python developer, Java developer, Python NodeJS developer, React Native Full Stack developer and DBA, SaaS marketing adviser, front end WordPress, Full Stack Web developer, API developer, JavaScript Developer, Senior React and Node Developer Also, helped with UX UI web design as a ui ux designer. Have experience working with: angular, laravel, ruby on rails, spring framework. As an Expert Full Stack Developer and CEO of a Development company, I'm ready to elevate your project to new heights of success! 🚀🚀🚀
Backend Rest API
AI DevelopmentFull-Stack DevelopmentAPIAPI DevelopmentTailwind CSSNext.jsExpressJSRESTful APIWeb DevelopmentJavaScriptTypeScriptMongoDBNode.jsReact - $80 hourly
- 5.0/5
- (10 jobs)
Greetings! 🏆 100% Job Success | ⌛600+ hours on UpWork | 💎 Top Rated Plus Freelancer 👨🏻💻 8+ years of experience | Senior Front-End Engineer ⭐ Expert: Next.js | React.js | JavaScript | TailwindCSS | HTML | CSS | ChatGPT | v0.dev ✅ Daily updates, ✅ Flexible Availability, ✅ Highest-Quality deliverables ⭐ What I can bring to your project ⭐ ✅ Website or Complex Web Application Development ✅ Top-notch knowledge of React, JavaScript, TypeScript, Redux ✅ Advanced understanding of UI Architectures and what works best for your project ✅ Optimization techniques for efficiently solving bottlenecks in your project ✅ Extensive experience with building Complex UI Solutions and Web Applications ✅ Clean code that conforms to best engineering practices ✅ Ability to quickly diagnose existing code bases and find ways to improve them ✅ You will always be aware of the project status with the help of my task management tools ⭐ Why you should choose me over other freelancers ⭐ ✅ Trust: I'm always transparent about my processes ✅ Ownership: I focus on providing value to your business and maintain impeccable agreements ✅ WOW Factor: this is core to my work as a freelancer. I strive to give more than what I receive to ultimately make you happy about working with me and choosing to hire me again ✅ Problem-solver: I never give up until I find a good solution. I solve problems. ✅ Genuine: I'm rooting for your success. It makes both human and business sense - knowing I've helped you succeed, you'll return to purchase more of my services! ✅ Someone who cares about helping you succeed and bringing value to your business But don't just take my word for it: ⭐⭐⭐⭐⭐ ”Nikita is an outstanding full-stack engineer and easily one of the top front-end engineers I've worked with. Here are a few things to call out: - very sharp front-end architecture skills - incredibly high level of ownership - great product sense Our entire team loved working with Nikita, from design to support.” ⭐⭐⭐⭐⭐ ”Nikita was a standout member of our team during his tenure. He took ownership of his work to a whole new level, always going the extra mile to ensure our projects' success. It was clear that he deeply cared about the company and the product, and his dedication showed in the quality of his work. Nikita had a strong grasp of front-end infrastructure, and his technical knowledge was impressive. He kept up with the latest developments in the field and used that knowledge to come up with practical and innovative solutions that benefited our team and clients…” 💻 FRONT-END SKILLS ⭐ Next.js | React ⭐ Redux | Redux Saga ⭐ TypeScript | JavaScript ⭐ HTML | CSS | SCSS ⭐ Jest | React Testing Library ⭐ Webpack ⭐ Babel ⭐ Eslint | Prettier 🧩 UI | COMPONENTS: ⭐ Shadcn UI ⭐ TailwindCSS ⭐ Ant Design ⭐ Material UI ⭐ Styled Components ⭐ HighCharts ⭐ Ag Grid 🎭 ANIMATION ⭐ Framer Motion ⭐ React Three | Three.js 📶 INTEGRATIONS ⭐ Stripe ⭐ Auth0 ⭐ Google Auth ⭐ Segment ⭐ Headway 📐 UI ARCHITECTURE & DESIGN ⭐ Feature-Sliced Design ⭐ Atomic Design 🏁 PAGE SPEED OPTIMIZATION ⭐ Lighthouse ⭐ GMetrix ⭐ Profiler 💻 BACK-END SKILLS: ⭐ Node.js | Express.js ⭐ MongoDB | PostgreSQL ⭐ Mongoose ⭐ REST API ⭐ Docker 🆕 READY TO GET STARTED? NEXT STEPS: 1. Invite me to your job 2. I will send my proposal 3. We'll iron out all the requirements and expectations 4. I'll get the work done professionally to ensure you love the result 5. You'll leave an awesome review at the end 😎
Backend Rest API
TypeScriptNext.jsTailwind CSSCSS 3Web ApplicationJavaScriptFront-End DevelopmentHTML5ReactReduxRESTful API - $42 hourly
- 4.6/5
- (22 jobs)
I bring over 9 years of experience helping businesses start with Salesforce and thrive using it. My expertise spans across multiple industries, including recruitment, real estate, e-commerce, finance, insurance, healthcare, and energy. I specialize in tailoring Salesforce solutions that help you achieve your business goals efficiently and effectively. Whether you need a new implementation, custom development, or support for existing projects, I provide a full range of services to elevate your Salesforce instance: My Salesforce Expertise Includes: - Cloud Specialties: Experience Cloud, Service Cloud, Sales Cloud, Marketing Cloud - Custom Development: Lightning Web Components (LWC), Apex, Visualforce, Lightning Aura Framework - Emails Configuration: Email templates, Signatures, DNS/DKIM/SPF configuration (to avoid emails going to spam) - Integrations: REST API integrations (e.g., Make.com, Stripe, Intercom, PayPal, e-commerce platforms, Zoho, Jotforms) - Marketing Automation: Marketing Cloud Email Studio & Automation Studio - User Experience & Security: Setup, Tailoring, Security Management, User Roles & Permissions - Automation: Flows, Workflows, Process Builders - Data Management: Data migration (Salesforce Dataloader), Import & Export (CSV, JSON), Salesforce Data Management Tools - CI/CD & DevOps: Git, Bitbucket, Salesforce Change Sets, Heroku, Azure Salesforce Certifications: - Platform Developer I & II - Security & Privacy Accredited Specialist - Marketing Cloud Email Specialist - Marketing Cloud Admin - Data Cloud Consultant I am passionate about creating Salesforce solutions that make an impact. I prioritize clear communication and a collaborative approach to ensure the success of each project. Let's work together to unlock the full potential of Salesforce for your business.
Backend Rest API
AngularRESTful APIVisualforceSalesforce LightningSalesforce CRMReact NativeOmnichannel AutomationReactJavaScriptApex - $80 hourly
- 5.0/5
- (15 jobs)
🌟 Lead Software Engineer & Data Scientist | Tech Startup Specialist 🎓 MSc Computer Science 🚀 9+ Years Elevating Tech Startups with Advanced Full Stack Development & Data Science At the forefront of tech innovation, I specialize in endless product development, bringing unmatched expertise to robust, scalable solutions. My career spans a series of groundbreaking startups, contributing to multimillion-dollar success stories. My business experience perfectly complement my technical skills, enabling me to align software development with core business goals, market analysis, and efficient team management. 🔑 Core Strengths: * Advanced skills in FastAPI for top-tier API design. * Mastery in data mining and automation with Playwright and Selenium * Deep knowledge in distributed systems, including Kafka and microservices architectures. * Proven excellence in AI and ML, with expertise in TensorFlow and PyTorch. * Proficiency in Cloud Computing with AWS, Azure, DigitalOcean, and GCP. * Expertise in containerization with Docker and Kubernetes (k8s). * Strong knowledge in cybersecurity, ethical hacking, and penetration testing. ✅ Full Stack Development: - Languages: Python, JavaScript, TypeScript, Java, C/C++, Bash; - Python Web Frameworks: FastAPI, Flask, Django, CherryPy, Falcon, Django rest framework, Tornado; - Node.js Web Frameworks: Express.js, Koa.js, Socket.io, Feather.js, Sails.js, Nest.js; - Front-end: React.js, Vue.js; - Databases: MongoDB (GridFS), PostgreSQL, MySQL, MariaDB, Redis, Neo4j, NoSQL; - ORMs: SQLAlchemy, Mongoengine, Marshmallow, Sequelize.js, Mongoose, Prisma; - AMQ: Celery, RabbitMQ; - CI/CD: Docker, docker-compose, kubernetes (k8s); - Deployment: GCP, AWS, MS Azure, DigitalOcean; - SSO: AWS Cognito / Amplify, Auth0, Okta, OneLogin, ORY.sh; - OAuth2.0 OpenID Connect and role management policies: RBAC, ACL, ACP, IAM. 📈 Business Impact: * Contributed to multinational projects for Coca-Cola, Unilever, Sberbank, Bankcolombia, Wargaming; * Recognized in international tech forums, including IAB and Web Summit; 📦 Technical skills: Node.js, Python, Javascript, TypeScript, Java, GoLang, Git, RESTful API, GraphQL, MERN, ES5, ES6, Express, Koa, Feather.js, Sails.js, MongoDB, Redis, DynamoDB, Kafka, MySQL, PostgreSQL, MariaDB, Neo4j, Flask, Django, Selenium, Scrapy, React, React Native, Redux, Vue.js, Webpack, Gulp, Grunt, Pandas, Tensorflow, Keras, NumPy, Docker, Docker-compose, Kubernetes, k8s, Jenkins, Google Cloud Platform, AWS, Microsoft Azure, Cognito, Auth0, Okta, Dialogflow, RASA, Segment, Google Tag Manager, Facebook Pixel, JWT, SQLite, Peewee.
Backend Rest API
Data EngineeringScrapyPostgreSQLClickHouseDjangoFastAPIRabbitMQWeb ScrapingSeleniumBack-End DevelopmentData AnalysisRESTful APIFull-Stack DevelopmentNode.jsPython - $50 hourly
- 5.0/5
- (7 jobs)
I have experience in developing complex web applications and creating production environments for them using infrastructure as code. In developing web applications I usually use python and js. I worked with frameworks: Django, Flask, Fast API, Vuejs, React and etc. I use cloud technologies such as AWS, Azure, GCP for product release and testing environments. For configuration I use tools: CloudFormation, Terraform, aws cli, gcloud cli and etc. Also I would like to mention the experience in creating pipelines for building and continuous delivery of code to different environments. I have experience with CI/CD tools like Jenkins, Gitlab CI, Github Actions, Circle CI.
Backend Rest API
DevOpsVue.jsAmazon Web ServicesTerraformAnsiblePythonDockerRESTful APIDjango - $40 hourly
- 5.0/5
- (13 jobs)
Software Engineer with over 3 years of experience🚀Python | Web apps | ETL Pipelines | Chatbots ✅Hire me if you want to talk Tech in Business language. 📌You want to set up a new project? I will propose the best technology stack and Architecture! 📌You have an ongoing project? I will quickly fit in and do my best to support the team and Business goals! 📌You want to refactor your code? I will do a safe transition and make sure nothing is left behind! 💪More about my skills that will help us achieve the best result: ✅Test Driven Development & Domain Driven Design ✅FastAPI, Django/DRF, Flask, Celery, SQLAlchemy ✅Numpy/Pandas, Apache Spark, Apache Airflow ✅ SQLite, MySQL, Microsoft SQL, PostgreSQL, Alembic; ✅ NoSQL - MongoDB, Redis, Elasticsearch; ✅ AWS, Kubernetes 👨💻Even more facts about me! 🔸I do tech talks 🔸I held company hiring events 🔸Reach out to know more!
Backend Rest API
Python AsyncioLinuxFlaskDockerPostgreSQLBeautiful SoupGitHubNoSQL DatabaseRESTful APIDjangoSQLGitTelegram APIMongoDBPython - $56 hourly
- 4.8/5
- (32 jobs)
Upwork Top 5%. Are you looking for a detail-oriented and meticulous Frontend developer? If so, you are at the right place! Here is what my clients think about me: 💬 "Firdavs was a pleasure to work with, the work was done efficiently and to a great standard. Would definitely work with him again, he is responsible and gets back quickly" 💬 "He’s quick, resilient and technically sound. Felt like we were working with someone from our team. Always available and top-notch work." Key Facts: ✔️ Worked and completed over 100 projects; ✔️ Have plugins and custom themes for sale in marketplaces; ✔️ Expert in Javascript frameworks (React JS/ React Native) ✔️ Over 3 years of solid coding experience. Do you need to build Progressive Web Apps or Single-page applications? I am here to help you! Few things that I can do: ✔️ Creating UI with Next.js and React js; ✔️ Redux, Firebase, Sanity.io, Stripe, Prismic, and other great tools; ✔️ React-router, Material UI, Styled-components, Tailwind; ✔️ Single page applications, Progressive web applications; I can offer you: ✔️ Pixel-perfect web pages ✔️ Building UI with SPAs ✔️ Building whole CRMs from scratch ✔️ Architecturing the whole structure of the website from scratch ✔️ Refactoring old websites and making improvements on the existing applications/projects I achieve high-quality products with a proven software development process. Take a look at my profile and, let's chat!
Backend Rest API
Business with 1-9 EmployeesHTMLAPIHTML5XHTMLMaterial UIPSD to HTMLJSONBootstrapGitReactRESTful APIweb3.jsCSSJavaScript - $45 hourly
- 4.9/5
- (11 jobs)
Hello👋 Are you looking for experienced and certified Java engineers to boost your project? You are on the right page! Clear Solutions team provides Java engineers and grows their skills for you. We have more than 12 years of experience in IT and 8+ in Java. My team and I are happy to provide: 🚀 Java developers with transparent knowledge for transparent rates 🚀 People development services: technical assessments, mentoring, evaluation etc. Based on more than 500 interviews and technical assessments we made in the industry so far we created our own evaluation scale. Therefore you always know what set of knowledge you pay for each grade. Do you feel this is what you need? Let's schedule a quick call and find out how we could help you to grow ✅ I have an experience in the following: 👉 migration from on prem to AWS 👉 building microservce architecture from scratch 👉 delivering robust and high-quality code with unit tests 👉 building java high-load and distributed applications 👉 migration from monolith to microservices 👉 building the right engineering culture inside the company 👉 mentoring technical leaders Tech Stack: 🔹 Languages: Java 8, Java 16, Groovy. Spring boot, RESTful API, DB design, 🔸 Frameworks: Spring, Spring Boot, Hibernate, Spring Data 🔹 Clouds: AWS 🔸 SQL: PostgreSQL, MariaDB, Oracle 🔹 NoSQL: Elasticsearch, Redis, MongoDB, Cassandra, DynamoDB 🔸 Message brockers: Apache Kafka or RabbitMQ 🔹 Testing: Junit5, Testcontainers, Spock, RestAssured We have expertise in the following fields: ✅ FinTech, ✅ Trading, ✅ Cryptocurrency, ✅ Banking, ✅ Data processing, ✅ Healthcare, ✅ Social Networking and more. Do you feel this is what you need? Let's schedule a quick call and find out how we could help you to grow As a Backend Developer, I specialize in building robust Java Applications using Core Java, Spring Framework, and Spring Boot 3, leveraging tools like Maven, Gradle, and Bazel for efficient builds, and integrating Hibernate, JPA, and Apache POI for database and document handling. I have extensive experience with RESTful Architecture and SOAP for designing APIs, ensuring Application Security, and implementing testing frameworks like JUnit, JUnit5, Mochito, and AssertJ. I work across diverse environments, including Docker, AWS, Amazon Elastic Beanstalk, AWS Lambda, Google Cloud, and Azure (Azure Cosmos DB), utilizing databases like PostgreSQL, MySQL, MongoDB, Oracle Database, Microsoft SQL Server, IBM Db2, and RabbitMQ. On the frontend, I use HTML, CSS, JavaScript, TypeScript, Angular, AngularJS, and React, collaborating seamlessly using tools like Jira. For messaging and event-driven architecture, I rely on Apache Kafka, Apache ActiveMQ, and RabbitMQ, and for advanced testing, I employ Testcontainers. With a focus on Software Architecture & Design, I also develop Standalone Applications, Desktop Applications, and Web Services, ensuring scalable, secure solutions for enterprise systems and Microservices Architecture.
Backend Rest API
Amazon Web ServicesMySQLMongoDBSpring BootKubernetesRabbitMQRESTful APIElasticsearchDockerHibernateSpring FrameworkJavaSQLApache Kafka - $38 hourly
- 5.0/5
- (4 jobs)
⚠️ 𝐏𝐫𝐞𝐬𝐬 𝐈𝐧𝐯𝐢𝐭𝐞 𝐁𝐮𝐭𝐭𝐨𝐧 𝐨𝐧 𝐦𝐲 𝐩𝐚𝐠𝐞 𝐚𝐧𝐝 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤 I'm a highly focused and motivated Mobile Team Lead developer at Itexus. Organized, methodical and a keen eye for detail results in solid coding and trustworthy mobile apps. Transforming client requirements into great apps based on a clear and quality code are core values in achieving long-lasting relationships. I have 7+ years of experience in mobile development using Android, Kotlin, Java, and iOS, Swift, Objective-C, Flutter. Technologies & Tools Kotlin | Java | Android | Swift | iOS | Dart | Flutter | KMM | KMP| Kotlin MutliPlatform | JavaScript | HTML | CSS | React Native | ReactNative | Native Mobile Development | Dagger 2 | Koin | GetIt | MobX | ReactiveX | Kotlin’s flow | Coroutines | Cicerone | Navigation Component | Realm | Room | Retrofit | OkHttp | Moshi | Scarlet | Apollo | Dio | Compose | ViewBinding | Splash Screen API (animated) | MPAndroidChart | RiverPod | Freezed | Groovy | Kotlin DSL Our Expertise at a Glance • Mobile App Development: Android, iOS, & Cross-Platform App Development using Java, Kotlin, Swift, Objective C, Flutter, and more. • Website and Full Stack Development: Crafting seamless back-end experiences with .Net, Python, Java, Javascript, React.js, Angular.js, Node.js, MERN, MongoDB, PHP, etc. • Logo & UI/UX Design: Bringing your ideas to life with Adobe XD, Photoshop, Sketch, Figma, etc. • End-to-End Solutions: From logo design, UI/UX development, workflow setup, testing to deployment in app stores, we've got it all covered. Why Choose Itexus? • Customized Approach: We tailor our services to fit your needs and budget. • Agile Workflow: Regular updates, milestones, or scrum sprints keep you in the loop. • Quality Assurance: Our meticulous testing process ensures that every project we undertake meets the highest standards of quality and functionality. • Competitive Price Assurance: We provide top-quality services at competitive prices to offer you the best value for your investment. • Guaranteed Success: We work tirelessly to exceed your expectations. Industries We Cover Healthcare, Transport, Retail, Asset Management, Wealth Management, Real Estate, Dating, Rental, Food Delivery, Fintech / Finance and Banking, Cryptocurrency, Entertainment, Hospitality, Non-Profit, Sports and Fitness, Travel and Tourism, Wellness, Medical Dashboard, Marketplace, Advertising, Automotive, Aircraft, Business Innovations, Human Resources, LegalTech, Lifestyle, Marketing, Education, E-learning, Insurance, IoT, E-commerce, Enterprise. Highlighted Skills Swift, iOS, Android, Kotlin, Java, IOS, Native programming Language | Project Planning | MVC Architecture and RESTful APIs | Front-end Technologies | React | HTML5 | CSS3 | JavaScript | Responsive and Mobile-first Design | Database Design and Implementation | MongoDB | Firebase | User Authentication | Integration of Third-party APIs | Deployment to Cloud Platforms | AWS | Test-driven Development | Agile Methodology | Scrum | Kanban | Security Technologies | QR Code Scanner | GPS and Mapping | Blockchain | NFT | Artificial Intelligence | E-commerce Solutions | Chatbots | Version Control Systems | Git | GitHub | Project Management and Collaboration Tools | ClickUp | Jira | Trello | Documentation and Code Commenting | SEO and Maintenance | MVP SAAS | Rebuild | Prototype | Start-Up | High-Friendly Custom Development | Transform | Solution | Ensure | Create | Enhance | Implement | Great Problem-solving | Excellent Communication | Assist | Collaborate | Mobile App Development | Web App Development | User Interface Design | Payment Integration | Stripe | Payment Gateway | ERP | CRM | User-friendly Interface | Mobile App Development | Mobile App Developer | Flutter App | Flutter Developer | Flutter Firebase | Flutter Dart | Flutter App Developer | App Developer | Mobile Developer | React Native | React Native Mobile App Development | Mobile App Builder | Flutter App Developer | Flutter Laravel | Mobile App Development | Mobile App Developer | Flutter App | Flutter Developer | Flutter Firebase Business with 1000+ Employees | Business with 10-99 Employees | Business with 100-999 Employees | Business with 1-9 Employees | Apple HealthKit | AI Marketplace | Waste Management & Remediation | AI App Development | Healthcare | Android App | Audio Conversion | ChatGPT API | Dating & Social Life | NFT Marketplace | Ecommerce Website Development | AI Speech-to-Text | Email Campaign Setup | API | Startup Company | Artificial Intelligence | Health Coaching | Health | Maintenance Management Talent Good Knowledge, Talented, Experienced, Skilled, Strong Experience, Proven Experience, Agency, Team, Company, Specialist, Proven Track Record, Strong Background, Write Clean Code, Deep Expertise, Bring to Life, Cross-platform, Attention to Detail, Long Term. ⚠️ 𝐏𝐫𝐞𝐬𝐬 𝐈𝐧𝐯𝐢𝐭𝐞 𝐁𝐮𝐭𝐭𝐨𝐧 𝐨𝐧 𝐦𝐲 𝐩𝐚𝐠𝐞 𝐚𝐧𝐝 𝐥𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤
Backend Rest API
RESTful APIAPIBlockchainAndroid SDKFlutterKotlinC++SwiftFirebaseAPI IntegrationAndroidAndroid App DevelopmentiOS - $35 hourly
- 5.0/5
- (1 job)
More than 15 years of experience in web development. 13+ years SFCC (formerly Demandware) experience as a backend/fullstack developer. Strong problem solver, API and service integrations with minimal documentation. In-depth knowledge of SFRA structure and functions. Business Manager customization, Einstein, Page Designer, deep OCAPI hooks experience. Technology stack: Javascript, SOAP/REST, PHP, MySQL, HTML, CSS, and more. Proven ability to develop and optimize web systems for performance and scalability. Currently I have participated in more than 40 projects from medium to enterprise size. In late 2022, I was researching js frontend frameworks for Commerce API and decided to expand my knowledge in Next.js, React, and TypeScript as a whole.
Backend Rest API
NodeJS FrameworkSOAPBack-End DevelopmentECMAScriptRESTful APIDemandwareNode.jsHTMLPHPJavaScriptMagento - $125 hourly
- 5.0/5
- (20 jobs)
Software engineer with 10+ years of experience in development and devOps. Recent projects: * Fintech project (golang) * Custom connectors for Zapier, Workato, Terraform, Crossplane, Pulumi * Datasets management platform for Computer Vision projects (python) * IoT platform (golang) Skills: golang, python, devops, custom integrations
Backend Rest API
GolangDockerRESTful APIDevOpsTerraformApplication Release AutomationGitAPIPythonScriptingZapierAPI IntegrationAutomation - $60 hourly
- 5.0/5
- (5 jobs)
More than 10 years of production experience. I have good knowledge in different types of architectures: # Hexagonal/Onion/Clean Domain Centric Architectures # Classic 3 Layers DataBase Centric Architecture # Domain Driven Design # CQRS patterns, Event Sourcing, Event Streaming and Historical Modelling # Distributed Event-Driven systems, complex systems with SAGAs # Microservices, Docker, Containerised Apps & Kubernetes # Security with OAuth2 & OpenIdConnect, JWT, mTLS I’m fond of designing encapsulated domain models (Domain Driven Design) and building Microservices using modern architectures with CQRS patterns. Skills: # C#, .NET, Web Api # Entity Framework, Dapper # T-SQL, MS SQL Server, MySQL # TDD, SpecFlow, unit & integration tests # SVN, Git, Scrum Biggest Projects ever worked on: # Senior Software Engineer at PaySafe - a market leader with over 25 years of experience in payments. My the most responsible task: I personally participated as a key developer in creating the backend architecture for a child PaySafe product: SafetyPay. It’s a high load system which processes millions of payment transactions a month. # Elateral Marketing Service Cloud. I personally worked on the features for the following customers: Coca-Cola, Procter & Gamble, Motorola, Toyota. I used a NServiceBus SAGA to develop complex fulfilment process. There were more than 150 developers, QAs, BAs, Managers on the project. Methodologies I currently apply to my software development process: # Abstractions: this is important thing because it's the only way to build complex systems in easy way. Usually I use 5-8 abstractions maximum in a single piece of code/level because it's very difficult for a human brain to keep in mind more than 5-8 things at the same time. # Domain Driven Design # Profiling SQL queries # GoF patterns # SOLID principles # Estimating the complexity of algorithms O(1) O(N)... # Well designed REST apis # DRY # Microservices # Encapsulation
Backend Rest API
.NET CoreDomain-Driven DesignTest-Driven DevelopmentClean ArchitectureRESTful APITransact-SQLC#MySQLEntity FrameworkMicroservice - $50 hourly
- 5.0/5
- (8 jobs)
More than 10 years of successful development of a wide range of commercial web applications using .NET Core, ASP.NET, Web API, SOAP and REST Web Services, Xamarin and Cordova based mobile apps. Great architecture abilities for highly scalable solutions Microsoft Certified Software Developer: MCSD: Web Applications Experienced with Microsoft Azure cloud ecosystem, including Azure App Services, Azure Storage (Blob, Queue, Table), Kubernetes clusters and Service Fabric clusters. Have strong skills in Microsoft SQL Server and PostgreSQL. Had experience in Microsoft Bot Framework. Backend stack: .NET 6, .NET Core, Web API, .NET Core Identity, ASP.NET MVC, Entity Framework, Azure cloud platform, Google Cloud, AWS, Node.js Data storage: Microsoft SQL Server, PostgreSQL, MongoDB, Azure Cosmos DB, AWS Aurora, AWS Dynamo DB ORM: Entity Framework, Dapper, NHibernate No-SQL: MongoDB, Firebase DB, Redis, Elastic, Cosmos DB Frontend technologies stack: Vue.js, React, Angular, Javascript, Typescript, HTML5, CSS, Bootstrap, jQuery, LESS, SASS Test frameworks/tools: NUnit, xUnit, Selenium, Selenium Web Driver, Postman, jMeter Payment Systems integrations: PayPal, Stripe API, Flutterwave 3rd pary integrations: HelloSign, Google APIs, SigningHub, RestPack, Mailchimp, TINCheck, Experian, MasterCard MATCH, GIACT, Equifax, TransUnion Cloud solutions: Microsoft Azure, Google Cloud Services, Amazon Web Services Logging: Kibana, Elastic, Google StackDriver CI/CD: Azure DevOps,TeamCity, Octopus, Jenkins, Terraform Top projects: CRM System for Payment Gateway (NDA) Project goal: Migration from Salesforce to a self-developed CRM system with highly automated workflows Overview: CRM systems for US Payment Gateway business flows ie lead management, underwriting and processing of the third-party data ie Credit Score checks, Payment Gateways history checks, Fraud alerts Technologies: - .NET Core, .NET Core Web API - Entity Framework Core - PostgreSQL - Redis - React - Google Stack Driver - Kubernetes - Google Cloud Position / Responsibilities: Technical Lead of a team of 3 full-stack, 2 frontends and QAs Technical architecture design and implementation, requirements investigation, business process planning, task management License Plates Recognition (NDA) Project goal: Software for automatic license plate recognition. Creation of the infrastructure and apps for parking solutions in Europe. Overview: CRM systems for Parking Providers in Europe including booking, administration, and parking violations checks Technologies: - .NET Core, .NET Core Web API - Entity Framework Core - PostgreSQL - Elastic - Kibana - Kubernetes - AWS Position / Responsibilities: Technical architecture design and implementation, diagrams, documentation, requirements the investigation, business process planning, task management, optimization, scalability, code reviews 2018 – 2020 London-based Cloud Solution for Video/Image storage with image recognition and similarity detection (NDA) Project goal: Cloud software is primarily for creative people like designers, artists, and photographers to share their portfolios and do the edits and delivery online. Ability to find the best candidate for a job by uploading of a reference image. Ability to hire, track and pay for a job. Overview: Web solution for storing and editing the images and videos with the ability to share and portfolio management to find a job. Technologies: - .NET Core, .NET Core Web API - Entity Framework Core - MS SQL Server - Elastic - Vue.js - Azure Position / Responsibilities: Technical Lead / Architect Technical architecture design and implementation, diagrams, documentation Scalability enhancements Semantic core development for the image recognition and similarity detection software 2020 – 2021 Unity Mobile Game – Server Side Architecture and Development (NDA) Overview: Backend Development + CMS for a mobile game Technologies: - .NET Core, .NET Core Web API - Entity Framework Core - Amazon Aurora (PostgreSQL) - Elastic - Vue.js - Terraform - AWS Lambda - Web Sockets Position / Responsibilities: Technical Lead / Architect Backend performance tuning, Web Sockets implementation, AWS Lambda scalability and performance optimization, AWS cost optimization, CMS development (vue.js), API development, Business process overview, delivery planning 2021 – 2022 Warranties and loads for US automotive market Overview: US-based solution for auto warranties and loans with lead management and underwriting features Technologies: - CQRS pattern (MediatR) - .NET Core, Web API - Azure - Elastic - React - Azure DevOps - CosmosDB (Mongo syntax) - Web Sockets - Service Bus - Service Fabric, Azure App Services - Azure Functions (serverless) Position / Responsibilities: Technical Lead / Architect Third-party connection infrastructure development. Migration from Service Fabric to App Services. Performance optimization. Architecture review. High load stable infrastructure development.
Backend Rest API
API.NET Core.NET StackMicrosoft AzureGoogle Cloud PlatformRESTful APIAzure Cosmos DBC#ASP.NETASP.NET MVCSQLMongoDBASP.NET CorePostgreSQLWeb Development - $30 hourly
- 5.0/5
- (2 jobs)
Software Engineer, who likes quality. Experience in designing and developing software and databases from scratch, implementation of new software solutions. Solid knowledge in .NET, web application, desktop application development, Client/Server side web applications development, database development. Experience in optimizing query performance on the MS SQL Server, transfer existing software solutions to modern technologies. Professional interests include development methodologies, software design, internet of things. Solid background development process including design, estimating, coding, testing, debugging. Strengths include: • New application development, refactoring and improvement of existing applications. • Web and desktop applications development. • Using OOP, Design Patterns. • Experience in Unit Testing. • Technical Problem Solving, Team Working • Good communication and team coordination skills
Backend Rest API
NHibernateRESTful APIEcommerce WebsiteDevExpressASP.NET MVCMicroserviceASP.NET Web APIASP.NET CoreSQLC#PostgreSQL - $35 hourly
- 4.3/5
- (9 jobs)
Dedicated Senior Technical Lead with experience in building distributed systems and data processing pipelines across cloud platforms. Strong background in leading development teams and delivering scalable solutions, with a focus on infrastructure automation and real-time analytics.
Backend Rest API
NGINXKubernetesDocker ComposeDockerPostgreSQLMongoDBReactRESTful APICSSJavaScriptDjangoHTML5FlaskPython - $40 hourly
- 3.7/5
- (3 jobs)
I am a professional full-stack PHP/Symfony/Laravel developer. I have 12 years of commercial experience in PHP development that covers websites and dedicated systems built in Symfony/Laravel, VueJS or custom PHP. I'm very comfortable working with frontend - VueJS, HTML, CSS/SASS. I am a part of the Polcode team, a Polish software development company established in 2006 with over 150 developers, designers, project managers, DevOps and QA specialists onboard. This means that besides my programming skills you always have access to a full-stack product design & development team. My main competencies are: - Symfony/Laravel/PHP based applications - Vue.js (static sites with Nuxt.js, PWA, SPA) applications or reusable components - Creating or consuming REST services - Creating applications using PostgreSQL, MySQL, Elastic Search - VPS configuration and basic management - Working in Linux or Windows with WSL environment - Docker My technology stack: Backend PHP | Symfony - Doctrine - Twig | Laravel | MySQL | PostgreSQL | Elastic Search Frontend VueJS | Nuxt.js | Vuetify | jQuery | HTML | CSS - SCSS/LESS | Bulma | Twitter Bootstrap | Webpack More about Polcode Polcode provides customized software solutions for startups, SaaS companies, eCommerce stores, and enterprise clients worldwide. From building the product from scratch to extending the existing teams, we have expertise in a diverse set of open source technologies and platforms to bring innovation in an agile fashion. Our team excels in PHP, Symfony, Laravel, Magento, Go, React Native, React.js, Vue.js, Ruby on Rails and Angular. With over 150 people, Polcode has either empowered client teams or delivered end-to-end development projects for brands from fintech, manufacturing, consulting, eCommerce, marketing or eLearning industries and is recognized as Top Developer in Poland by Clutch. Looking forward to our cooperation! Karol, Polcode Dev Team
Backend Rest API
PHPReactSymfonyAJAXLaravelVuetifyDockerJavaScriptVue.jsBulmaRESTful APIBootstrap - $50 hourly
- 0.0/5
- (0 jobs)
My experience includes 20+ years in cloud telephony and contact centre solutions. My professional interests are high-loaded cloud voice and text communication and AI automation technologies like speech and NLP. I'm proud I've played a significant role in projects processing millions of calls and chats. Moreover, with our team, we have developed a Conversational AI Platform — a complete solution designed to help companies expand and improve their services quickly. This platform offers a no-code development solution that helps businesses design, develop, and integrate intelligent IVR, voice bots, and chatbots. The platform is for digital service providers, startups, and B2B/B2C businesses looking to enhance their services, improve customer interactions, and cut costs through automation. Learn more about the platform by following the link provided in the portfolio section below.
Backend Rest API
Cloud ComputingChatbot DevelopmentVoIPFreeSWITCHProduct DevelopmentRabbitMQAutomatic Speech RecognitionAPIPythonAPI DevelopmentPostgreSQLCloud ServicesC++RESTful APIArchitectureArchitectural Design - $30 hourly
- 5.0/5
- (5 jobs)
Experienced Java Developer with 5+ years in backend development. Proficient in Java, Spring, Quarkus, and cloud technologies. Strong expertise in microservices, databases, and DevOps tools. Adept at designing scalable architectures and optimizing application performance. Passionate about writing clean, maintainable code and mentoring junior developers.
Backend Rest API
GraphQLPostgreSQLMySQLElasticsearchGradleSpring BootCI/CDHibernateApache KafkaDockerAPIRESTful APIRabbitMQObject-Oriented ProgrammingWeb Development - $16 hourly
- 5.0/5
- (13 jobs)
I am a skilled Java developer with extensive experience in building high-performance, scalable, and reliable applications. With over 3 years of experience in the industry, I have honed my skills in Java development, including core Java, J2EE, Spring Framework, Hibernate, and Maven.
Backend Rest API
AutomationScriptingData ScrapingAWS ApplicationOracleAWS AmplifyDockerKotlinRESTful ArchitectureJavaGolangRESTful APIMySQLSpring FrameworkRedis - $35 hourly
- 5.0/5
- (2 jobs)
Hi, I’m Oleh Abrashyn, a Senior PHP Backend Developer with over 11 years of experience in web development, including 4 years specializing in the fintech industry. I’m passionate about building high-performance, scalable applications and delivering exceptional results for my clients. What I Offer: • PHP Expertise: Advanced knowledge of PHP 8 and frameworks like Laravel, Symfony, and Yii2. • ERP and Fintech Solutions: Extensive experience in developing secure, robust systems, including ERP customizations and payment system integrations. • Database Optimization: Skilled in MySQL, PostgreSQL, and MongoDB to ensure fast, reliable data handling. • API Development and Integration: Seamless integration of third-party services, including payment gateways (Crypto, APM, S2S). • Performance Optimization: Proven ability to streamline workflows, reduce redundancy, and enhance application speed using tools like Redis, RabbitMQ, and Docker. Why Work With Me: • Reliable and Efficient: I pride myself on completing projects on time without compromising quality. • Client-Focused: I’ll collaborate closely with you to ensure your project goals are met and exceeded. • Proven Results: I’ve delivered solutions for businesses across various industries, including fintech, healthcare, and e-commerce, impacting millions of users worldwide. Notable Achievements: • Successfully integrated over 100 payment systems, improving efficiency and compliance with Visa/MasterCard security standards. • Designed scalable microservices and APIs for real-time data processing, supporting high-traffic systems. • Led cross-functional teams and mentored developers to achieve business objectives efficiently. If you’re looking for a developer who can bring expertise, dedication, and innovation to your project, let’s connect! I’m excited to help turn your ideas into reality.
Backend Rest API
Yii2PSD to HTMLPayPal IntegrationStripe APIFinTechRESTful APICryptocurrencySOAPSymfonyPSD to CMSPayment Gateway IntegrationLaravelPHPMySQLOpenCartMongoDBPostgreSQL - $40 hourly
- 3.3/5
- (9 jobs)
I have been a professional Laravel Full Stack Developer since 2015. During that time, I have built complex software systems, ranging from SaaS, CMS or CRM and keep up to date on the latest practices in coding in PHP, Laravel, Vue and React and JavaScript. I am a part of the Polcode team, a Polish software development company established in 2006 with nealry 100 developers, designers, project managers, DevOps and QA specialists onboard. This means that besides my programming skills you always have access to a full-stack product design & development team. My technical expertise: - Code quality: Acceptance Tests, Unit testing with PHPUnit, PSR Standards - Databases: MySQL, MariaDB, SQLite - Version Control System: Git, SVN My technology stack: - Backend: Laravel 9, Symfony 5, PHPUnit, Unit Tests, Acceptance Tests, RESTful APIs for web applications - Frontend: Bootstrap, Blade, Twig, React + Redux, Vue + Vuex, jQuery - Desktop Applications: Java FX, Java Swing - Administration: Linux (CentOS, Debian, Ubuntu), Apache, Nginx, MySQL My approach: - priority on code quality and reliability - strong analytical skills - follow main programming rules such as SOLID, DRY, YAGNI, KISS More about Polcode Polcode provides customized software solutions for startups, SaaS companies, eCommerce stores, and enterprise clients worldwide. From building the product from scratch to extending the existing teams, we have expertise in a diverse set of open source technologies and platforms to bring innovation in an agile fashion. Our team excels in PHP, Symfony, Laravel, Magento, Go, React Native, React.js, Vue.js, Ruby on Rails and Angular. With nearly 100 people, Polcode has either empowered client teams or delivered end-to-end development projects for brands from fintech, manufacturing, consulting, eCommerce, marketing or eLearning industries and is recognized as Top Developer in Poland by Clutch. Looking forward to our cooperation! Dominik, Polcode Dev Team
Backend Rest API
Vue.jsPHPLaravelRESTful APIBootstrapMySQL ProgrammingVuexPHPUnit - $10 hourly
- 0.0/5
- (0 jobs)
Python Developer. Languages: Python, SQL. Frameworks/Technologies: Django framework,Django REST framework, Celery, Celerybeat, Docker, Docker compose, AWS, VMWare ( pycloud SDK ),Veeam Backup & Replication. Web development: HTML, CSS, Bootstrap, jQuery. DB technologies: MySQL, PostgreSQL IDE: Visual Code,PyCharm Version Control System: GIT OS: Linux family OS administator, Windows Server administrator Other librires: Telegram bots: telebot and Aiogram. Parsers: requests, beautifulsoup,pandas. Rresourceful and detail-oriented individual, able to grasp new technology quickly. I can ability understand other people's code. Have more than 1 years experience Leading Remote Technical Support, so I have problem-solving skills and ability to work in team. High willingness to learn and explore alternative paths for challenging problems
Backend Rest API
HTMLMySQLAmazon Web ServicesDockerBootstrapCSSDjangoRESTful APILinuxPostgreSQLGitjQueryPython - $11 hourly
- 0.0/5
- (0 jobs)
I am a React/React Native Developer with 3+ years of experience building high-performance mobile apps and web applications. With experience in backend with Node.js. Skilled in TypeScript, Redux, Firebase and deploying cross-platform apps.
Backend Rest API
MobxRedux SagaNext.jsRESTful APIReduxWebsocketsApple XcodeAndroid StudioTypeScriptGraphQLMongoDBFirebaseJavaScriptReactReact Native - $25 hourly
- 0.0/5
- (0 jobs)
I am a dedicated and motivated full stack software engineer with having specialized skillset in React/Svelte development. I have great experience in building industrial web applications from the ground-up to production in different industries including healthcare, internet marketing, entertainment, live streaming and blockchain/web3. My favorite development toolkit includes JavaScript, TypeScript, React, Next.js, Svelte, Tailwind CSS and Node.js, NestJS/AWS Lambda (for the backend). I ensure the highest quality of the product by following the best convention and practices and by implementing modern-looking user interfaces and the best user experiences. I have great experience in implementing the following features on frontend: - Creating pixel-perfect and responsive layouts from Figma/XD designs - Creating scalable architecture and reusable components on frontend - Integrating backend APIs through Axios/GraphQL libraries - Implementing sophisticated state management mechanisms by using Redux and React Context APIs - Adding authentication /authorization layer and mechanism by using JWT/OAuth/Auth0/AWS Cognito - Building intuitive admin dashboards for managing/monitoring the application statuses and states with different types of charts, tables and rich components - Configuring CI/CD of frontend on Netlify, Vercel, Digital Ocean and AWS Amplify The major languages/frameworks that I am best at: - ES5/ES6, TypeScript, SCSS, CSS3, TailwindCSS, HeadlessUI - React/Redux/React Hooks/Material-UI/Next.js/Gatsby/React Bootstrap/Storybook - Vue2/Vue3/Vuex/Vue-Router/Vuetify/Nuxt.js - Jest/React Testing Library/Cypress/Mocha - REST/GraphQL/Axios - OAuth2/JWT/Auth0/AWS Cognito - Figma/Adobe XD I have pretty good experience in backend development also including the following languages/frameworks: - Serverless/Python/Node.js/Golang - Express.js/Nest.js/FastAPI/Django/Laravel - AWS/AWS Amplify/AWS SAM/AWS Lambda/AWS AppSync - MySQL/PostgreSQL/AWS RDS & Data API/AWS DynamoDB - Indexing data using ElasticSearch/AWS OpenSearch and hosting ElasticSearch on on-premise hosting servers - Stripe/Plaid/SendGrid Integrations I have specialized experience in using/integrating AWS services and building backend APIs using AWS Lambda and serverless architecture. I am very much familiar with agile development tools and environments including: - Managing source code through GIT, GitHub, GitLab, Bitbucket, and following GIT flow in the development - Task tracking and progress reporting through JIRA, Trello and GitHub Issues - Following the SCRUM/Sprint principles and attending daily meetings for team collaboration and discussion I have been working in remote teams for the last 9 years and I am a good team player. I am good at balancing quality and productivity. I hope we can discuss this further on the call if you are interested in my skillset and experience. Thank you very much for reviewing my proposal!
Backend Rest API
Ruby on RailsSaaSAmazon Web ServicesVercelFirebaseSupabasePostgreSQLGraphQLRESTful APINode.jsTailwind CSSSvelteNext.jsTypeScriptReact - $10 hourly
- 0.0/5
- (0 jobs)
Hi, welcome to my profile! 🔹 Skills & Technologies ✅ Backend Development – Django, DRF, FastAPI, Flask ✅ API Development – Build and optimize RESTful APIs ✅ Authentication & Security – Implement JWT tokens, role-based access ✅ Database Management – PostgreSQL, SQLite, Django ORM ✅ DevOps & Tools – Docker, Redis, CI/CD, Git/GitHub ✅ Interactive API Documentation – Swagger, ReDoc Let’s build something great together! 🚀
Backend Rest API
PostmanSwaggerDatabaseRESTful APIRedisCI/CDDockerFastAPIFlaskSQLiteGitREST APIDjangoPython - $28 hourly
- 0.0/5
- (0 jobs)
Python developer with experience in cryptocurrency and forex projects. Skilled in API integration, data processing using Pandas and NumPy, creating RESTful APIs, and process automation. Possess basic knowledge of web development and database management. Committed to continuous improvement and applying skills in real-world projects.
Backend Rest API
RESTful APIDatabaseComplianceComputing & NetworkingREST APIPythonBlockchain Want to browse more freelancers?
Sign up
How hiring on Upwork works
1. Post a job
Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.
2. Talent comes to you
Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.
3. Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
4. Payment simplified
Receive invoices and make payments through Upwork. Only pay for work you authorize.
Trusted by
How do I hire a Backend Rest API Freelancer near Warsaw, on Upwork?
You can hire a Backend Rest API Freelancer near Warsaw, on Upwork in four simple steps:
- Create a job post tailored to your Backend Rest API Freelancer project scope. We’ll walk you through the process step by step.
- Browse top Backend Rest API Freelancer talent on Upwork and invite them to your project.
- Once the proposals start flowing in, create a shortlist of top Backend Rest API Freelancer profiles and interview.
- Hire the right Backend Rest API Freelancer for your project from Upwork, the world’s largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Backend Rest API Freelancer?
Rates charged by Backend Rest API Freelancers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Backend Rest API Freelancer near Warsaw, on Upwork?
As the world’s work marketplace, we connect highly-skilled freelance Backend Rest API Freelancers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Backend Rest API Freelancer team you need to succeed.
Can I hire a Backend Rest API Freelancer near Warsaw, within 24 hours on Upwork?
Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive Backend Rest API Freelancer proposals within 24 hours of posting a job description.