Name: JavaScript developers
Brand: Upwork
Rating: 4.8 (339 reviews)

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Clients rate JavaScript developers

4.8/5

based on 339 client reviews

$70 hourly
- 5.0/5
- (18 jobs)
I am a dedicated and adaptable professional with over a decade of hands-on programming expertise and five years specializing in cyber security. Currently contracted with Google, I serve as a software developer contributing to Google Workspace, utilizing my proficiency in JavaScript, Google Apps Script, and Python. My role involves providing developer support and crafting third-party applications with OAuth2 integration for seamless Google Workspace functionality. Key Skills: Main Programming Languages: JavaScript, PHP, Google Apps Script, Python Security Expertise: Cyber Security, OAuth2 Google Workspace: Integration, Developer Support Cloud Services: Proficient in Amazon Web Services as well as Google Cloud. WordPress: Expertise in WordPress development Database Technologies: Hands-on experience with MySQL, as well as Firestore and Firebase databases Scripting: Extensive experience in Google Apps Script Development: Web Development, Web Applications, Chrome Extensions, Wordpress Automation: Over two decades of coding and automation script creation Data Analysis: Proficient in leveraging scripting for data analysis Networking: Strong foundation in networking principles Educational Background: I read Physics for my bachelor's degree, and then pursued postgraduate studies in Cyber Security, enhancing my theoretical knowledge and practical skills in the field. Volunteer Work: For almost half a decade, I have actively volunteered in public forums, offering scripting expertise to users of Google Apps Script and Google Workspace technologies. This experience has allowed me to stay at the forefront of industry trends and deepen my understanding of user needs. Language Proficiency: As a native English speaker raised in a bilingual household in the south of England, I am fluent in both English and Spanish. This language versatility enhances my ability to communicate effectively and work seamlessly with diverse teams. Experience Highlights: Google Contract: Currently engaged with Google, contributing to Google Workspace as a software developer. Scripting Mastery: Over 20 years of coding and automation script development, covering a broad spectrum from Google Workspace integration to productivity tools, web development, data analysis, and Chrome Extensions. Security Focus: In-depth experience as a cyber security engineer, emphasizing security protocols such as OAuth2. AWS, WordPress, Firestore: Well-versed in Amazon Web Services, WordPress development, and Firestore, bringing a comprehensive skill set to diverse projects. Experience setting up AWS EC2 and RDS instances with LAMP stack Why Choose Me: Proven Track Record: With a decade of programming and cyber security experience, I have a solid track record of delivering high-quality solutions. Google Workspace Expertise: My current role at Google showcases my proficiency in Google Workspace integration, developer support, and application development. Full Stack Skills: From AWS to WordPress and Firestore, I possess a versatile skill set for comprehensive project execution. Communication Skills: Fluent in both English and Spanish, I bring effective communication skills to any project, fostering clear and collaborative interactions. Let's Discuss: Feel free to reach out and discuss your project requirements. I am confident in my ability to contribute effectively and bring valuable insights to the table. Let's create something exceptional together!

JavaScript
Python
CSS
Google Apps Script
Google APIs
Google
Front-End Development
Scripting
HTML
OAuth
Google Sheets
Google Docs
Automation
Google Cloud Platform
Google Slides
$40 hourly
- 5.0/5
- (32 jobs)
Computer Science major with experience in Python, Javascript, Bash, and Powershell that can develop quick and concise scripts for task automation, as well as more complex pipelines to create a deeper workflow. I work efficiently and develop solid, elegant code. I have also worked in depth with Data Processing and Machine Learning systems, where I have a strong foundation in both theory and practice. Additionally, I have some experience in mobile applications, with Android (both Java and Kotlin) and React Native. I'm a passionate worker and a quick learner that is always ready to tackle the next challenging project.

JavaScript
React Native
Node.js
React
Kotlin
Python
$50 hourly
- 5.0/5
- (26 jobs)
Experienced Full Stack Web Developer with a specialized focus on backend development and expertise in cloud-based solutions. Over the years, I have honed my skills in JavaScript, TypeScript, Python, and have extensive experience with backend frameworks such as Flask, FastAPI, Express.js, and Fastify. Additionally, I possess in-depth knowledge of various AWS services, including AWS Lambda, AWS S3, API Gateway, AppSync, DynamoDB, OpenSearch, and Cognito. As a certified AWS Solution Architect, I can design and implement cloud-based solutions that are scalable, secure, and efficient. I am proficient in working with databases such as PostgreSQL, MySQL, MongoDB, and DynamoDB, leveraging their power to build robust and high-performance applications. My expertise extends to containerization using Docker, allowing for seamless deployment and management of applications across different environments. With my backend development skills and cloud knowledge, I can architect and develop end-to-end solutions that meet the specific needs of your project. While I possess a strong background in full-stack development, my true passion lies in creating beautiful and powerful websites that seamlessly integrate frontend and backend functionality. I have a track record of delivering high-quality work within scheduled timelines, and I excel at troubleshooting and problem-solving. My Core Skills and Expertise: 🔹Backend Development: JavaScript, TypeScript, Python, Flask, FastAPI, Express.js, Fastify 🔹Cloud Solutions: AWS Services (Lambda, S3, API Gateway, AppSync, DynamoDB, OpenSearch, Cognito), AWS SDK 🔹Databases: PostgreSQL, MySQL, MongoDB, DynamoDB, DocumentDB 🔹Solution Architecture: Certified AWS Solution Architect with experience in designing scalable and secure cloud-based solutions 🔹Containerization: Docker for seamless deployment and management of applications 🔹Full-Stack Development: NextJS, React, SEO, JavaScript 🔹Responsive Web Design/Development: HTML5/XHTML, CSS3, SCSS, SASS, TailwindCSS If you have any further questions or would like to discuss your specific project needs, please feel free to reach out to me. I am passionate about taking on challenging tasks and creating innovative solutions.

JavaScript
Python
React
Solution Architecture
AWS Amplify
Amazon S3
Data Scraping
PostgreSQL
Web Crawling
API
AWS Lambda
AWS AppSync
Node.js
API Development
Serverless Stack
$35 hourly
- 5.0/5
- (10 jobs)
I have more than seven years of experience helping clients customize, extend and maintain their existing websites and online services. To achieve my client's goals my experiences have ranged from WordPress theme and plugin customizations, WooCommerce integrations and performance optimizations to complete CSS customized sites that look great in all screen widths, LMS with Chamilo, custom dynamic web applications with CodeIgniter and server administration with ISPConfig. Whether you are starting a new project from the ground up or just need maintenance or customization to an existing website, I can work on every aspect of your project (from front-end design to back-end integration), or just certain parts, based on your specific needs. When working with clients I deliver open, agile and trustful communication. I pay attention to detail and will over deliver and not stop until you are totally satisfied. I am happy to discuss your needs and help support you in finding the best strategy that meets your project.

JavaScript
C++
AJAX
Bootstrap
Google APIs
Linux System Administration
WordPress Multisite
CodeIgniter
Python
Elementor
CSS
HTML
SQL
Sass
PHP
$40 hourly
- 5.0/5
- (43 jobs)
As a Certified and Official Webflow Template Designer and Expert Partner from Ukraine, I bring to the table a passion for digital creation and a multifaceted skill set. Fluent in English, Spanish, Ukrainian, and Russian, I offer versatile communication options tailored to your preference. My journey in web development began earnestly in 2013, marked by diverse projects and a deep dive into modern web app development concepts. The global lockdown served as a catalyst for dedicating myself wholly to this field, fostering my growth into a proficient full-stack developer. Today, I am adept with a broad spectrum of tools and technologies, including JavaScript, React, Nextjs, Material-UI (Mui5), Figma, Node.js/Express, and various associated frameworks and libraries. I am excited to apply this expertise to deliver bespoke and innovative web solutions tailored to your needs.

JavaScript
MongoDB
UX & UI
Figma
MEAN Stack
Webflow
Web Development
WordPress
HTML
CSS
Next.js
React
Material UI
Sass
$40 hourly
- 5.0/5
- (76 jobs)
Hello. My name is Ivan, I am a designer and developer of email templates. 𝗜𝗳 𝘆𝗼𝘂 𝘄𝗼𝘂𝗹𝗱 𝗽𝗿𝗲𝗳𝗲𝗿 𝗜 𝗵𝗮𝘃𝗲 𝗮 𝗳𝗶𝘅𝗮𝘁𝗲𝗱 𝗽𝗿𝗶𝗰𝗲 𝗼𝗻 𝘁𝗵𝗲 𝘁𝗲𝗺𝗽𝗹𝗮𝘁𝗲 (𝗱𝗲𝘀𝗶𝗴𝗻 + 𝗰𝗼𝗱𝗶𝗻𝗴) 🎁 Benefits you will get: ✅ Correct display of letters in all email clients, devices and browsers. - The email template supports over 30+ available email clients (Outlook, Gmail, WindowsMail, Hotmail, Yahoo, AOL, Apple Mail, Thunderbird, Lotus, Android and more...), with pixel perfect rendering for all email clients. - Testing the finished template in a number of email clients and on real devices (Windows, IOS, Android). ✅ Reduced spam emails. - Clean HTML code. Image optimization. Optimization of the ratio of the volume of text and images. ✅ Increase CTR. - Improved CTA, minimal links, UX/UI design. ✅ Development control. - Track the progress of the prototype and design development, make adjustments online with me in Figma. ✅ FREE after-sales support for 7 days. - Free support does not include design changes. 1️⃣ I design and develop email templates: - HTML/CSS coding - coding dynamic variables with Handlebars and Liquid - coding in MJML - Integration into ESP (Email Service Provider) - coding of ESP (Email Service Provider) template modules - in ESP design editor (e-mail service provider) - PSD/PDF/AI/XD/Figma/Sketch/Zeplin to HTML - HTML to PDF 2️⃣ Feel free to contact me if you are interested in a great email template for: - newsletters - transactional emails (welcome, order, cart, reminder, etc.) - sales letters (discount, coupon, etc.) - cold emails - Email signature 3️⃣ Make your emails stand out among other Interactive Add-Ons in the template. - GIF email - Email accordion - Dropdown navigation - Hero Image - Slider - Table - Chart - QR codes Turn on 🖤Dark Mode By using my services, you will receive: 💎 Modern, clean and professional design to match your brand style that will stand out. 🌐 Responsive - optimized for mobile devices, the correct display of letters in all email clients, devices and browsers. ♻️ Editable and repeatable pattern. I would be happy to discuss more with you. Do not hesitate to contact me. Sincerely Yours, Ivan

JavaScript
PSD to HTML
HTML5
WordPress
CSS Grid
Campaign Monitor
Shopify
Mailchimp
HubSpot
SendGrid
CSS
HTML
Email Design
Email Marketing
Email Template
$40 hourly
- 5.0/5
- (3 jobs)
Expert in software development, I offer integral solutions from 0 to 100, including architecture design, UI design, software development, and cloud development. I optimized my solutions to run fast and with good accessibility, offering a perfect performance score on Lighthouse. All of this, while providing an optimized cloud architecture to keep the maintenance cost as low as possible, and being able to scale to many users. My vision is to make the internet a better place, by offering high-quality software with the best user experiences. I developed more than 15 web applications starting from scratch (MVPs), so I have already created integrations for most of the requirements you need. Some examples are: - Dashboards with charts and data tables - Rest APIs - Landing pages - Native apps for Android, IOS, and desktop - Payments - ETL - Web crawlers - Image and video galleries - Authentication/Authorization - Email notifications - Video conferences - Chat - Rich text editors - Web sockets for real-time - System logging and error monitoring Here is a non-comprehensive list of technologies I have worked with: - Programming: Typescript/Javascript, Node.js, Shell - Frameworks: React, Nest.js, Express, Remix, Nextjs, Tailwind - Databases: PostgreSQL, MYSQL, SQLite, MongoDB, Redis, DynamoDB - AWS: Lambda, API Gateway, EC2, ECS, RDS, S3, Route53, Cloudwatch, Serverless, etc - DevOps: CloudFormation, SAM, CodePipeline, GitHub Actions, Bitbucket pipeline, CI/CD - Containers: Docker, Docker Compose, ECS Why contract an expert like me? - You have a busy schedule: You need someone who can proactively suggest effective solutions without requiring much of your time. - You need a solution ASAP: The best way to receive a fast solution is to find someone who has already solved that before. - Good communication is mandatory: If you ask for something, you expect an answer in less than 24 hours. - Good quality is mandatory: Software development is complex, and you are expecting your solution to work perfectly. Do you think I could help you but still unsure? Don't worry, contact me with non-compromise for an initial 30-minute consultation for FREE!

JavaScript
React Native
ETL Pipeline
Cloud Architecture
Architecture
Business Intelligence
API
NoSQL Database
Microservice
Database Architecture
Web Development
Amazon Web Services
SQL
Node.js
React
$60 hourly
- 4.7/5
- (11 jobs)
Hi, I'm Denys, a Full Stack Software Engineer, Product Engineer, CTO, and Founder. I help clients add features to their existing applications, or create from scratch a full-scale Startups: SaaS, MVP, MLP, PoC, etc. I deliver high-quality, reliable solutions efficiently and within budget because your success = my success. I specialize in: ✅ Web Development (Backend, Frontend, and Design) ✅ AI Development (AI agents, prompt engineering, AI-powered web applications, etc) I'm not just a developer, I am your tech partner, who works closely with you to: 🎯 Deeply understand your vision, idea, and goals 📊 Define our Target Audience, ICPs, and the pain points we aim to solve 🔍 Conduct a Competitor Analysis and User Research to ensure we build something that people want and are willing to pay for ⚡ Scope down an MVP with the most crucial features, build it quickly 🙋‍♂️ Find the first users to give us feedback 🔄 Develop application further with feedback, ensuring that our product that meets real user needs Why Work With Me: 🚀 Tech Partner, not just a developer 🏆 Launch MVPs within 2 weeks to 4 months 🧠 Assistance with MVP scope definition, tool selection, and marketing 🤝 Ongoing support or smooth project handoff Technologies I use the most: 💻 Frontend: React, Next.js, TypeScript, Tailwind CSS, shadcn/ui, Radix 🖥️ Backend: Node.js, tRPC, Express, Nest.js, Java, Spring ☁️ Cloud: AWS (AWS Certified Developer) 🗄️ Databases: PostgreSQL, MySQL, MongoDB, DynamoDB 🛠️ Tools: Git, CI/CD (Vercel, Jenkins, Bamboo), Jira, Trello, Notion 🤖 AI: LangChain, AI agents, prompt engineering Tech stack: 💡 Frontend: React, Next.js, TypeScript, Tailwind CSS, shadcn/ui, Radix 💡 Backend: Node.js, tRPC, Express, Nest.js Java, Spring 💡 Cloud: AWS (AWS Certified Developer) 💡 Databases: PostgreSQL, MySQL, MongoDB, DynamoDB 💡 Tools: Git, CI/CD (Vercel, Jenkins, Bamboo), Jira, Trello, Notion Keywords: MVP | Minimum Viable Product | MLP | Minimum Lovable Product | Frontend Development | React Developer | Next.js | Tailwind CSS | Backend | Node.js | Java | Spring | AWS Certified | Database | MySQL | MongoDB | PostgreSQL DynamoDB | SQL | NoSQL | AI Integration | ChatGPT API | OpenAI | Artificial Intelligence | SaaS | SaaS Application | Custom CMS | Workflow Automation | Finances | Rental | Git | CI/CD | Jira | Trello | Notion | Full-Stack | Microservices Architecture | Cloud-native | DevOps | JavaScript | Artificial Intelligence | Node.js | Python | React | Natural Language Processing | Machine Learning | Chatbot | Web Application | OpenAI | AI Agent | Amazon Web Services | Java | PHP | AI Model | Full-Stack | TypeScript | Next.js | LangChain | Android | Architecture | LLM Prompt Engineering | GPT Chatbot | Chatbot | AI Chatbot | GitHub | WordPress | Design | C# PHP | Front-End | Tailwind CSS | Figma | MongoDB | ExpressJS | Website | Web Design | Bootstrap | Conversational AI | IBM Watson | ERP Software | Large Language Model | Hugging Face | Landing Page | Responsive Design | Microsoft Azure | Microservice Functions | Workato | Automation Framework | Third-party | SCSS | Vue.js | Laravel | Kubernetes | GitLab | JSON | IaC Terraform | CI/CD Pipeline | Prototype JavaScript Framework | Desktop Application | AJAX | AI Bot | MERN Stack | Generative AI Prompt | Netlify | Mobile App | Next.js | Supabase | Angular | jQuery | HTML | RESTful | LLM Orchestration | Cloud | ChatGPT | ChatGPT Prompt | Chatbot Tuning | Chatbot Training | Deep Learning | Graph | AngularJS | Artificial Neural Network | Customer Service Chatbot | Lead Generation Chatbot | TensorFlow | ChatGPT | GPT-4 | GPT | Machine Learning and NLP | Programming Languages | Data Preprocessing and Model Training | and | Application | iOS | Smartphone | Amazon Bedrock | Testing | Retrieval Augmented Generation | GPT-4o | LLM Prompt | HDBSCAN | Vector | Vector Embedding | K Means | Full Stack | Chatbot | Platform | Full-Stack | Experience | Application | Agent | Specialist | LLM | MERN | Engineer | Advanced | Expert | Creation | Tech | Automation | Startup | TailwindCSS | Node | Senior | Healthcare | Data | Develop | Market | Sizing | Analysis | Reports | Customize | Real Estate | Compliance | Laws | Search | Open | Enhance | Conversational | Strong | Graph | AI-MVP | AI-Finetuning | Finetuning | Integrator | Documents | GPT | Integrations | Consult | Software | Web-based | Divino | AI-First | Spiritual | Companion | Backend | Developing | Feature | CRM | LLaMA | RAGs | PoC | Chat | Context | RAG | Consultation | Experienced | Vector | Unsupervised | Clustering | AI-Powered | Marketing | Lead | Process | Social | Investment | Elite | Revolutionary | Crypto | Functions | Updates | System | Scraping | Download | Management | Internal | Time Tracker | Python-MERN | Marketplace | Expertise | Music | EdTech | Building | Real-time | SaaS | Utilizing | Google | Business | Profile | Build | Online | Practice | English Language | Proficiency | Assessment

JavaScript
OpenAI API
API Integration
Artificial Intelligence
API
AI App Development
SaaS Development
Minimum Viable Product
AI Implementation
Node.js
Amazon Web Services
Web Development
TypeScript
Next.js
React
$56 hourly
- 5.0/5
- (37 jobs)
I've been a Senior Full Stack Software Engineer for 15 years, deeply engaged in coding and tackling challenges. My motivation stems from a passion for solving problems and the continuous pursuit of knowledge. Throughout my tech journey, I've focused on turning ideas into reality. I work with PHP and robust frameworks like Laravel, Zend to build the foundational aspects of web applications. In addition, I leverage the power of Node.js to build scalable and efficient server-side solutions and enhance the overall architecture of web applications. I'm particularly enthusiastic about using React and Next.js, as they allow me to develop highly responsive and efficient web pages, offering a seamless user experience across all devices. For data management, I rely on databases like MySQL and MongoDB. Redis is my choice for enhancing performance through fast data access, ensuring quick and reliable data retrieval for web applications. If you have an exciting project or idea, I'm eager to hear about it. Let's collaborate and bring it to life!

JavaScript
Yii2
MySQL
Expo.io
jQuery
MySQL Programming
CSS
Business with 10-99 Employees
Laravel
Firebase
Firebase Cloud Firestore
React
MongoDB
PHP
React Native
$33 hourly
- 5.0/5
- (9 jobs)
I graduated as an Electrical Engineer and I have been programming since BASIC and MS DOS. After many years of experience and used technologies I prefer to use Ruby on Rails and Javascript for web development. C# and Unity for Virtual Reality and Game Development.

JavaScript
MySQL Programming
PostgreSQL Programming
Payment Gateway Integration
Python
ChatGPT
Django
API Integration
jQuery
Ruby on Rails
HTML5
$60 hourly
- 4.6/5
- (13 jobs)
Experienced Full-Stack PHP Developer Specializing in Symfony and React I am a seasoned Full-Stack Developer with extensive experience in Symfony and React. My passion lies in translating complex client needs into effective, high-quality solutions that drive business growth. What I Offer: In-Depth Consultation: I take the time to understand your unique needs by asking insightful questions before any coding begins. Collaborative Development: Partnering closely with project managers, clients, designers, and stakeholders, I ensure that the final product meets and exceeds expectations. Technical Expertise: In addition to Symfony APIs and web applications, I bring solid experience with JavaScript frameworks, Laravel, Drupal, and WordPress. My Approach: Simplicity and Maintainability: I focus on creating clean, efficient, and easy-to-maintain code. User Experience: Delivering software that is both intuitive and enjoyable to use is a core principle in my development process. Reliability: Committed to meeting deadlines and ensuring top-quality results, I expect the same level of dedication from my clients. I am dedicated to turning your vision into reality. Feel free to request a detailed CV to learn more about my background and how I can contribute to your project. Let's collaborate and build something amazing!

JavaScript
Management Skills
Cross Functional Team Leadership
Software Architecture & Design
Domain-Driven Design
Web Service
API Development
Agile Software Development
React
CSS
PHP
Web Application
Symfony
WordPress
jQuery
$100 hourly
- 5.0/5
- (12 jobs)
I'm a Software Engineering Lead and Architect with over 15 years of experience in the software industry. I specialize in leading and organizing software development processes for diverse projects, including CRM Systems, Integrated Business Solutions, Web Services, E-Commerce Websites, Embedded Applications, and Social Networks. My key strengths include: - Translating business requirements into technical solutions - Building and managing effective development teams - Guiding projects from start to successful completion - Solving complex technical and organizational problems I have a broad technical background, specializing in web development (JavaScript, TypeScript with modern frameworks, PHP) and server-side applications (Golang). My expertise extends to building microservices with various cloud services and queues. Additionally, my DevOps skills include constructing private networks, implementing security practices, dockerizing applications, and establishing seamless CI/CD workflows. In team management, I organize team development flow, write technical documentation, and define coding standards. My leadership and analytical skills ensure that projects meet and exceed client expectations. Please feel free to reach out with any questions or project inquiries!

JavaScript
MySQL Programming
PostgreSQL Programming
Yii2
API Development
Node.js
React
PHP
SaaS
MongoDB
$120 hourly
- 5.0/5
- (218 jobs)
I have a vision. I solve problems. Over the last 15 years I've delivered and supported Mediawiki based solutions for companies, non-commercial bodies, and enthusiasts. I also guarantee prompt and clear communication. – All-in-one Mediawiki stuff: skins, semantic ontologies, templates, pageforms, data extraction, data visualization, widgets, gadgets, API, etc. - If you need ideas, I am creative and flexible. If you are careful about details, I am precise and scrupulous. At work, I am highly productive and disciplined. – Over 180 wikis delivered. Several public examples are displayed in my portfolio.

JavaScript
HTML
Ontology
DataTables
CSS
Bootstrap
Taxonomy
jQuery
MediaWiki
SCSS
$35 hourly
- 5.0/5
- (175 jobs)
Hello! I'm Oleksii, the proud lead of Smart-UI, where we harness the collective power of senior full-stack developers to bring your most ambitious web development projects to life. 🎯 Your Vision, Our Expertise Under the umbrella of Smart-UI, our team has been the catalyst behind numerous successful web projects over the past 6 years. We specialize in crafting scalable, high-performance web applications using a robust tech stack that includes React.js, Next.js, Python/Django, and Node.js. 💼 Bridging Strategy and Execution As a seasoned full-stack leader, I ensure our projects are not just code-complete but also strategically aligned with your business objectives. My role is to guarantee that our technical execution adheres to the highest standards while staying true to your strategic goals. 🔥 Tech Stack Proficiency Frontend: Crafting intuitive, and dynamic user experiences with React.js and Next.js. Backend: Robust and scalable backend solutions using Python/Django and Node.js. APIs & Integrations: Streamlining business processes through smart API use and third-party integrations. 💡 Proven Problem-Solving Prowess Our development approach is centered around solving your business challenges. We delve deep to understand the problem at hand and then architect solutions that are not just technically sound but also business-smart. 🔄 Agile & Adaptive Development Navigating through the realms of Agile, our team ensures that projects are delivered in a iterative, timely, and quality-assured manner. Your feedback is seamlessly integrated at every step to ensure the end product is precisely what you need. 🌍 Global Collaboration While we’re based in Ukraine, our clients hail from all corners of the globe. We’re adept at navigating time zone differences and ensuring smooth, remote collaboration. 📈 Driving Your Digital Success Let’s embark on a journey where your ideas are transformed into digital realities. By choosing Smart-UI, you're not just gaining developers; you're pa

JavaScript
Data Visualization
MLflow
GraphQL
Full-Stack Development
UX & UI Design
Django
API
Git
Next.js
Front-End Development
React
Gatsby.js
WordPress
Landing Page
$40 hourly
- 4.9/5
- (17 jobs)
Experienced Full Stack Developer specializing in frontend development with a robust skill set in building dynamic web user interfaces (UIs) and RESTful APIs, including integrating WebSocket for real-time communication in web applications. Proficient in a wide range of technologies and frameworks, specializing in: Frontend Technologies: React.js, Next.js, Gatsby.js State management with Redux and MobX TypeScript for type-safe JavaScript development RESTful API integration and GraphQL for efficient data querying Responsive UI design with Tailwind CSS Backend Technologies: Nest.js for scalable and modular backend development FastAPI for building high-performance APIs with Python Flask and Express.js for lightweight and flexible backend solutions Node.js for server-side JavaScript development Experience with Python and PHP for backend scripting and application logic Golang for building fast, efficient, and concurrent backend services Gin framework for building high-performance web applications in Golang Symfony for creating robust and scalable applications with PHP DevOps and Deployment: Proficient in AWS and GCP cloud platforms for scalable and reliable infrastructure deployment Containerization using Docker for efficient application packaging and deployment Implementation of CI/CD pipelines with GitHub Actions for automated testing and deployment workflows Automation Testing: Proficient in automation testing frameworks including WebdriverIO, Selenium, and Playwright Experience in creating comprehensive test suites to ensure the quality and reliability of web applications With a strong foundation in both frontend and backend development, coupled with expertise in DevOps practices and automation testing, I bring a holistic approach to software development, delivering high-quality solutions that meet both business objectives and user needs.

JavaScript
Flask
Node.js
TypeScript
Next.js
Redux
Python
Amazon Web Services
Mobx
Docker
Gatsby.js
CI/CD
NestJS
React
Selenium
$75 hourly
- 4.6/5
- (55 jobs)
I have 12 years experience in designing and building websites and apps. Specialize in lean yet scalable MVPs, system design, and business automation. Founded a design agency and an insure-tech startup (moishlem.ru). MBA with IE Business school. Fluent in English, Russian, French, Spanish. Tech stack: - React (Gatsby, Next) - NodeJS (Nest framework) - Python (scripts, serverless, and automation) - Hugo (Golang) - Figma, Affinity Designer - Airtable (for MVPs), MongoDB, DynamoDB, Postgres, Prisma - AWS, Serverless framework - Low-code automation tools (Integromat, Zapier, IFTTT, Pipedream) Especially interested in these types of projects: - Full-stack web development for startups - API design and integration - Natural language processing - Data science, including data mining and OSINT - Airtable and low-code automation consulting - Marketing automation (design, assets, content, email)

JavaScript
Database Design
Hugo
AWS Lambda
Serverless Stack
API Integration
Responsive Design
Automation
Management Skills
Web Design
Airtable
Python
Zapier
$75 hourly
- 5.0/5
- (13 jobs)
I'm a full stack web developer with experience in both Vue.js and React.js as well as Node. So I can build your app from back to front and deliver good and quality code. I have also experience building mobile apps with React native and Android. I will be online most of the time in order to answer your questions and doubts and I will deliver clean and maintainable code. If you want a well built web or app and a wonderful customer service don't hesitate to contact me. Hope we can make your idea the next big thing together :)

JavaScript
React Native
MySQL Programming
Angular 6
Android
WordPress
React
Node.js
Vue.js
PHP
$50 hourly
- 5.0/5
- (180 jobs)
💎 Certified by Shopify ⚛️ Certified by Upwork 🏆 Top Rated ✅ 170+ projects with 5-star reviews 🔥 5+ year of experience 👉 Proficient in Shopify, React, JavaScript, and various front-end technologies. Demonstrated ability to support and enhance websites for small and medium-sized businesses, providing technical solutions and performance optimizations. 🧑‍💻 Passionate about delivering high-quality, clean code and creating impactful web solutions. I am fluent in English (C1 IELTS). Why Choose Me? 🌟 Top-Rated Freelancer: Recognized for excellence on Upwork. 💼 Extensive Experience: Over 170+ successful projects under my belt. 📈 Proven Track Record: Consistently positive feedback with a 100% satisfaction rate. 🔧 Specialization in Shopify & Hydrogen: Expert in crafting e-commerce solutions tailored to your needs. What I Offer: ✅ Web Development: Shopify, Liquid, HTML, CSS, JavaScript, TypeScript. ✅ Advanced Programming: React, Next.js, Remix, Hydrogen, Oxygen. ✅ Data Handling: Experienced with GraphQL. ✅ Design Tools: Adobe Photoshop, Figma. 🎯 My Commitment: Delivering top-quality websites that meet your specifications within your timeline and budget. I guarantee your satisfaction and strive to exceed your expectations. Client Testimonials: 🌟 "Among the top 1% of talents I’ve worked with on Upwork. Brilliant skills and communication." 🌟 "Exceeded expectations in speed and quality. Andrii goes the extra mile!" 🌟 "Multi-lingual project success. Skilled, fast, and a joy to collaborate with!" 🌟 "Transformative results. Our business expanded thanks to the superb website Andrii developed." 🌟 "Andrii delivered a cutting-edge website that surpassed our imagination." 🌟 "High professionalism and attentive to changes. Delivers exactly what you want." 🤝 Communication is Key: I prioritize clear, ongoing communication to ensure all aspects of your project are aligned with your vision. ✉️ Ready to start? Message me on Upwork today! I’m almost always available and eager to help you achieve your goals. Let’s create something amazing together!

JavaScript
Set Up Shopify Site
GraphQL
Remix
Shopify Theme
Shopify Templates
Shopify Dropshipping
Shopify Development
Shopify Plus
Tailwind CSS
Front-End Development
Liquid
React
Shopify
PHP
$25 hourly
- 4.9/5
- (64 jobs)
► 4 years of experience in Shopify, Shopify App, Shopify Plus, Liquid Coding, Shopify custom apps development, and API development. ►Completed 50 projects with nice feedback and review on Upwork. My Work experience includes: ► Shopify | Shopify 2.0 | Shopify App | Shopify Plus | Liquid Code. ► Shopify Store Creation from Scratch. ►Shopify App Creation from Scratch using Laravel, CodeIgniter Framework and Integrated Shopify Store. ► Increase website performance. ► Bold, Recharge subscriptions. ► Integration of custom payment gateway in Shopify store. ► Skadate | Oxwall. ► Custom checkout integration in Shopify ► QuickBooks | Zapier | Paypal IPN. ► API Integration and Development. My experience includes collaborating with small to medium sized teams working with Vue js , Node.js , React , React Native, Wordpress, APIS, Shopify and pure HTML, CSS, PHP and JS. I always start the project immediately they hardly contact me. I have also helped clients with general troubleshooting, bug fixing. Project from scratch with design in Figma, normally I do, I do all the development so that the owner or manager can customize everything from the customizer of the theme I'm creating in both shopify theme and wordpress with ACF blocks or Gutenberg Blocks :) Overall I like to involve with projects as if they were my own, and I am very committed to achieving the best possible outcome to, at the end of the day, create a website that does Not Only look pretty but also meets business goals efficiently and increases conversion rates. I have several years old creating and working App collaborations, Websites and Landing Pages professionally. PPS: If you want someone that will NEVER ghost you and will always be responsive, but also that delivers great quality FAST, then contact me at +61 420 638 248. Expertise: - ExpressJs React Navigation - Handlebars. - UI with Storybook. - Node.js Firebas. - GraphQL Apollo Realm. - HTML5 CSS3 SASS LESS Bootstrap. - Complete Shopify store setup - Shopify Programming in liquid. - Apps and Theme installation and customization - Setup Product - Setting up Shipping Rules - Custom Shopify Theme development - Slate theme development

JavaScript
Front-End Development
Liquid
API Integration
Shopify Templates
Shopify Theme
Vue.js
Page Speed Optimization
Shopify Plus
Shopify Apps
Ecommerce Website Development
User Experience Design
Web Design
Figma
Landing Page
$23 hourly
- 5.0/5
- (12 jobs)
I'm Brian Ure, I help entrepreneurs and startups fulfill their software goals. I'm a full-stack TypeScript/NodeJs software developer specializing in creating back-end applications in Express as well as building reliable testing automation suites for unit, integration, and end-to-end scenarios. If you have an application idea that you want to build, or simply, update, or enhance, let's chat! Full tech portfolio: -Javascript/Typescript -Node.js -Express -Jest -Playwright -Electron -HTML5 -CSS -SasS -Vue 3 -React -ExtendScript -C# -PostgreSQL -MongoDB -Mongoose -Git & GitHub -Microsoft Azure DevOps -Visual Studio Code -Visual Studio

JavaScript
Cypress
Vuex
PostgreSQL
Azure DevOps
Dropbox API
Stripe
ExpressJS
QA Testing
Quality Assurance
Jest
React
Vue.js
Node.js
TypeScript
$25 hourly
- 4.9/5
- (19 jobs)
🏆 TOP-RATED 💯 100% JOB SUCCESS SCORE ✅ WORDPRESS ✅ WEBFLOW ✅ SHOPIFY 🎨 CERTIFIED UX DESIGNER 🌟 GLOWING 5 STAR REVIEWS ⏳ 5 YEARS OF EXPERIENCE 🚀 SEO-friendly and responsive website 🎯 1 Hour of response time Are you seeking a web virtuoso who delivers nothing short of perfection? Look no further! As a top-rated freelancer with a pristine 100% job success score and a collection of glowing 5-star reviews, I am your ultimate go-to expert for all things WordPress, Shopify, and Webflow. Allow me to craft a digital masterpiece that elevates your online presence to extraordinary heights. About Me: Greetings! I am Muizz Ahmed the maestro behind the scenes, orchestrating seamless web solutions that captivate and inspire. With 5 years of experience in the industry, I have honed my skills to perfection, earning the prestigious title of Top Rated freelancer on Upwork. My passion for web development knows no bounds, and I am committed to delivering results that exceed your wildest expectations. Masterful Skills: WordPress Wizardry: 🌟 Step into the realm of WordPress wonderland, where I reign supreme as your trusted guide. From elegant blog designs to robust e-commerce platforms, I possess the expertise to turn your dreams into reality. With a keen eye for detail and a flair for innovation, I'll customize your WordPress site to perfection, ensuring a seamless user experience that leaves a lasting impression. Shopify Sorcery: 🛍️ Enter the enchanting world of Shopify, where I wield my magic wand to transform your online store into a thriving marketplace. With a focus on aesthetics and functionality, I'll design a storefront that not only dazzles the eye but also drives sales and conversions. From stunning product displays to intuitive checkout processes, I'll conjure up a Shopify solution that sets you apart from the competition. Webflow Wizardry: 🎩✨ Prepare to be amazed as we journey into the realm of Webflow wizardry, where anything is possible. With its powerful tools and endless possibilities, I'll craft a website that pushes the boundaries of creativity and innovation. From sleek animations to responsive layouts, I'll bring your vision to life in stunning detail, ensuring a seamless browsing experience across all devices. Why Choose Me? Unmatched Excellence: 🏆 With a spotless 100% job success score and a string of glowing 5-star reviews, I am the epitome of excellence in the world of web development. When you choose me, you're not just hiring a freelancer – you're investing in a guarantee of unparalleled quality and satisfaction. Proven Track Record: 📈 I don't just meet expectations – I exceed them. With a portfolio filled with successful projects and satisfied clients, I have the track record to prove that I deliver results, time and time again. Reliability and Dependability: ⏰ When it comes to deadlines, I don't just meet them – I surpass them. You can trust me to deliver your project on time and within budget, without ever compromising on quality or attention to detail. Collaborative Spirit: 🤝 Your vision is my mission, and I'm dedicated to working closely with you every step of the way. From initial concept to final delivery, I'll ensure that your voice is heard and your goals are achieved. Let's Craft Your Digital Masterpiece! 🚀 Are you ready to transform your online presence into a work of art? Then let's join forces and create something truly extraordinary together. Whether you need a new website, a redesign, or ongoing support and maintenance, I have the skills and expertise to bring your vision to life. So don't wait – let's turn your dreams into reality and embark on a journey of digital excellence today!

JavaScript
Website Optimization
Website & CMS Bug Fix
cPanel
Website Migration
Ecommerce Website Development
Front-End Development
CSS
HTML
PHP
Figma to Webflow Plugin
Shopify
WordPress
Framer
Webflow
$42 hourly
- 0.0/5
- (1 job)
Passionate and dedicated to mobile development since 2016. Have an app design or idea that you want to launch to the iOS/Android stores? Contact me and let's talk about it! I love to hear about new apps, I really do, and even more if it's an original and creative idea you have in mind. Be either simple or complex project, I can assure that I have the right qualifications to complete your project without any hassle. As you might have realized I am an entrepreneur myself and want to help YOU launch your app (aka your business) to the real world. My current expertise is focused on mobile development with React Native, which is a hybrid technology to create native looking iOS and Android apps. And if you want to take your project to the next level, I know very well how to implement smoothly backend services with Firebase, like: - User Authentication: methods such as Email/Password, Google, Facebook, Apple... or even Anonymous - Cloud Firestore: scalable database (NoSQL) to play with app data - Cloud Storage: save on the cloud images/audio files to use in the app - Analytics: understand how your users are using your app - Crashlytics: track the app crashes that a user may have - Cloud Messaging: customized push notifications for your users - Dynamic Link: create a smart link for marketing purposes that opens web/iOS/Android app depending on device Yeah! I'm in love with Firebase, it's such a complete set of tools for your app. And what's even better, there are no service costs if your project is not above a certain amount of daily interactions. Thank you Google! To throw in some numbers, you would have to surpass 50k read operations per day or 20k write operations per day to start receiving some invoices, which are not high at all. Indeed, I am aware of best practices to design the most optimal database for your app with Cloud Firestore, to reduce the daily rate of Write/Read operations and maintain that free quota as long as possible. Not convinced yet? I'll show you proof of my work as a senior React Native developer (see my portfolio) and also my GitHub account to see some small open-source projects. Do I have knowledge about other technologies? Of course yes! As a developer you have to keep updated to be where you want to be and never settle down. Improving every day with best practices, clean code, clean architecture and test-driven development. My full potential is with React Native and that's why I'm focused on it right now. But I didn't start with hybrid mobile development because I didn't own a MacOS at that time, I started developing native Android apps with Java, I keep doing it because I love to work on my already launched projects as an entrepreneur. Also built some really complex apps for clients in native Android. During my time working for an agency I also learnt developing web apps using Django + Python + MongoDB. It was really easy for me to adapt coming from mobile development. Despite enjoying this kind of web development too, I enjoy a lot more the mobile world. That's the reason I will only work at my best skills, which are React Native + Firebase. Want to have a chat with me? Me too! Please contact me with details about your new mobile app. I appreciate you took the time to read my profile.

JavaScript
Android
App Store Optimization
MongoDB
Agile Project Management
MySQL
Mobile App
React Native
Firebase
Java
JSON
Test-Driven Development
Git
TypeScript
$30 hourly
- 5.0/5
- (4 jobs)
Currently a PhD student in a Linguistics laboratory in Spain, I am doing some freelance work on my spare time to complement my income. I do not take a lot of projects but dedicate myself to them once I'm in. * I have been coding in Python for both professional and personal projects for more than 10 years. * I work with jsPsych, JATOS, LimeSurvey, Cognition.run for online behavioural experiments. * I worked in video processing for my PhD, as I have led a motion capture experiment, and have knowledge in FFmpeg and video conversion. * I am working with Excel on a daily basis and like to do neat data presentations. * I have been performing translation work (English-French and French-English) during my studies. I also have advanced knowledge of Spanish as I live in Spain. I tend to communicate a lot to let you know of my advances and be sure that the specifications of the project are followed.

JavaScript
French English Accent
JSON
Python
Microsoft Excel
English to French Translation
French
Translation
English
$25 hourly
- 5.0/5
- (13 jobs)
Hello and welcome to my profile! I am developer with 5+years of experience in creating websites and plugins for various businesses. If you need a reliable and responsible developer, I can help you! I have experience working with HTML, CSS, JavaScript, PHP, Opencart and WordPress. I work with both the frontend and the backend. It is really important for me to have a good and long-term relationship with each of my client!

JavaScript
WooCommerce
API
CSS
PHP
XML
JSON
WordPress Plugin
Bootstrap
jQuery
WordPress
Laravel
HTML
MySQL
$30 hourly
- 5.0/5
- (25 jobs)
Hi, I'm a very experienced game developer with a long history of successful games for my clients and players. My experience includes Unity and Phaser. I'm a Phaser Pro, I have extensive experience in this engine and almost all the projects I've done are in this engine. But I also use Unity or Godot a lot for my clients, I'm fluent in C# and GDSCript. I'm always improving and learning new things like the Unreal engine. Since I'm very good at JavaScript and TypeScript, I also make games in BabylonJS or ThreeJS. My most common projects tend to be mini-games or medium-sized games, although I also have some large projects in my portfolio and I prefer to work by the hour. If you want to start a new successful project with me, don't hesitate to contact me.

JavaScript
TypeScript
Game Design
Game Development
Godot
Mobile Game
Unreal Engine
GameMaker
Android
HTML5
Phaser
Python
C++
Unity
C#
$25 hourly
- 5.0/5
- (1 job)
Experienced blockchain developer with strong background in smart contract development, blockchain architecture and backend. Proven ability to implement and test decentralized applications on Ethereum and Hyperledger platforms.

JavaScript
Docker
Git
Blockchain
Node.js
Golang
Ethereum
Hyperledger Fabric
$65 hourly
- 5.0/5
- (10 jobs)
With over half a decade of hands-on experience in the blockchain industry, I developed multiple innovative blockchain projects, transforming Web3 concepts into secure, profitable realities. In the vast world of blockchain, each project could either be a success or a failure. Security is not just a key aspect, it's everything. Your project must be shielded from numerous threats that have affected others negatively. We've observed too many projects falter and lose significantly due to vulnerabilities. My role is to ensure your project is robust and positioned for success. 🗣 ❞𝐄𝐱𝐭𝐫𝐞𝐦𝐞𝐥𝐲 𝐬𝐚𝐭𝐢𝐬𝐟𝐢𝐞𝐝 𝐰𝐢𝐭𝐡 𝐭𝐡𝐞 𝐫𝐞𝐬𝐮𝐥𝐭𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐩𝐫𝐨𝐣𝐞𝐜𝐭. 𝐃𝐢𝐞𝐠𝐨 𝐬𝐡𝐨𝐰𝐞𝐝 𝐧𝐨𝐭 𝐣𝐮𝐬𝐭 𝐡𝐢𝐬 𝐭𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐬𝐤𝐢𝐥𝐥𝐬, 𝐛𝐮𝐭 𝐡𝐢𝐬 𝐚𝐛𝐢𝐥𝐢𝐭𝐲 𝐭𝐨 𝐚𝐧𝐭𝐢𝐜𝐢𝐩𝐚𝐭𝐞 𝐩𝐨𝐭𝐞𝐧𝐭𝐢𝐚𝐥 𝐢𝐬𝐬𝐮𝐞𝐬 𝐚𝐧𝐝 𝐩𝐫𝐨𝐚𝐜𝐭𝐢𝐯𝐞𝐥𝐲 𝐩𝐫𝐨𝐩𝐨𝐬𝐞 𝐢𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐯𝐞 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬.❞ ⭐⭐⭐⭐⭐ BENEFITS OF WORKING WITH ME 🛡𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐅𝐢𝐫𝐬𝐭: Beyond creating unbreakable smart contracts, we instill confidence. Let's make your project a fortress in the Web3 realm. 📈𝐅𝐢𝐧𝐚𝐧𝐜𝐢𝐚𝐥 𝐆𝐫𝐨𝐰𝐭𝐡: By prioritizing gas optimization and smart contract efficiency, our scalable solutions pave the way for exponential financial growth. 📞𝐓𝐫𝐚𝐧𝐬𝐩𝐚𝐫𝐞𝐧𝐭 𝐂𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧: Expect regular updates, clear explanations, and honest advice. Your trust is our currency. ⚙️𝐓𝐚𝐢𝐥𝐨𝐫𝐞𝐝 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬: Whether it's DeFi, NFTs, or custom blockchain applications, we adapt our expertise to meet your project's unique demands. NEXT STEPS 🚀𝐈𝐧𝐯𝐢𝐭𝐞 𝐦𝐞 𝐭𝐨 𝐲𝐨𝐮𝐫 𝐣𝐨𝐛, 𝐨𝐫 𝐬𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐭𝐨 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭. I’m always willing to share my knowledge, and it gives us a chance to see how well we could work together.

JavaScript
Full-Stack Development
React
Security Testing
Website
Next.js
Blockchain
DApps
DApps User Experience
Web3
Smart Contract Development
Solidity
TypeScript
Ethereum
DApp Development
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