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$27/hr
100%
Job Success
$10K+ earned
Available now
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I am a highly motivated and enthusiastic Backend Developer with 8 years of experience building web applications using Python and related technologies.
I am well prepared to work with Machine Learning (ML) and Artificial Intelligence (AI), so now looking for an opportunity to apply my knowledge to deliver exciting new projects in this area!
I'm passionate about programming and have consistently delivered high-quality, scalable, and robust solutions that meet my client's needs. I have experience working in international markets.
One of my strengths is the ability to create the final product while working in an international team united by a common goal.
TECH STACK
✅ PROGRAMMING LANGUAGES: Python, Javascript
✅ FRAMEWORKS/LIBRARIES: Django, Flask, FastAPI, Aiohttp
✅ DATABASES: MySQL, PostgreSQL, MongoDB, Redis, Elasticsearch
✅ AI/ML STACK: Streamlit, Gradio, Python notebooks, LlamaIndex, Langgraph, Langchain, RAG, Embeddings, LLM, FineTuning, NPL, vector database, graph database, Knowledge Graph, OpenAI, Gemini, Groq (LLama2, LLama3, Gemma, LLava, etc), Ollama
✅ OTHER: Celery, AWS, Digital Ocean, Sockets
PORTFOLIO
✅ Onboard charging system. I discussed the requirements with the client, developed several modules, and tested the codebase.
✅ Web application with an emulator of charging stations and central. I designed models for databases, created endpoints, and implemented OCPP 1.6 functionalities.
✅ Development of an app for tracking races and for racing statistics. I developed API service using the Django REST framework, designed database models, covered code with unit tests, integrated with the Stripe payment system, and mentored junior developers on best practices and programming techniques.
✅ Car auction platform which allows users to buy cars. I performed code review and code refactoring, created internal tools for parsing data, covered code with unit tests, and implemented new features
✅ CRM system for casino based on popular casino engine. In this project, I developed a serverless API service using AWS Lambda, AWS API gateway, and serverless framework for Node.js, delivered code review and code refactoring, and designed models using serverless CMS Webiny and GraphQL.
✅ Development of an app for tracking students and study unit (Universities, Colleges, schools) processes. I worked on a team to develop a web-based application using Python and Django, participated in code reviews, bug fixing, and testing activities, and assisted in the application deployment on the production server.
✅ A system for boat or yacht reservations. I developed and maintained a Python-based application, designed database models, integrated with the Stripe payment system, implemented sockets chat using Django channels, and developed and maintained the front-end part using jQuery, HTML5, and CSS3.
LANGUAGES I SPEAK
Ukrainian is my native language. Besides, I have strong English skills. Most of my previous customers were English-speaking, so I am comfortable communicating in English.
MY TEAM
I am at ease as an individual contributor, but being a team player works best for me. So I joined Extrawest — an Upwork Top Rated Agency specializing in FinTech and Banking, Gambling and Betting, Food Ordering and Delivery, Logistics and Fleet Management, Medical Insurance and Healthcare, and special software for Electric Vehicles Charging Station networks since 2006.
Having most of our resources based in Europe, we’ve been working with customers from over 20 countries (the US, Canada, Australia, most of the EU, South Africa, Singapore, Japan). Hence, it won’t be a problem for us to adjust to your timezone and working schedule.
INVITE ME FOR AN INTERVIEW
If you feel I’m a good fit for your project, let's discuss how I can help streamline your business’s growth!
🟩 🟩 🟩 🟩
My Agency Skills: Front-End (Frontend) Development, Back-End (Backend) Development, Full-Stack (Fullstack) Development, Mobile Development, Artificial Intelligence (AI), Machine Learning (ML), EV Charging, eMobility, OCPI, OCPP, Automotive, Logistics, Delivery, Food Ordering, FinTech, Healthcare, Insurance, Betting, Gambling, Flutter, Dart, JavaScript (JS), TypeScript (TS), Angular, Vue.js (VueJS, Vue), React.js (ReactJS, React), Node.js (NodeJS, Node), Java, Spring, SpringBoot, Hibernate, Python, Django, Scrapy, Quality Assurance (QA), Manual Testing, Automated Testing, UI/UX Design, Figma, Adobe Creative Cloud, DevOps, MySQL, PostgreSQL, MongoDB, Firebase, Docker, Amazon Web Services (AWS), Google Cloud Platform (GCP), Project Management (PM).
Associated with
EXTRAWEST
$6M+
earned
$20/hr
100%
Job Success
$80K+ earned
Available now
Offers consultations
Start of list.
End of list.
I build scalable SaaS platforms, AI-powered applications, and production-ready MVPs designed for real growth, not just prototypes.
As a Full Stack Engineer, I take ownership of your product from architecture to deployment, ensuring clean code, fast delivery, and long-term scalability.
If you're looking for a developer who can take ownership of your product from architecture to deployment, ship fast, and write clean maintainable code, you're in the right place.
─────────────────────────────
𝐖𝐇𝐀𝐓 𝐈 𝐃𝐄𝐋𝐈𝐕𝐄𝐑
✅ 𝐒𝐚𝐚𝐒 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬: Multi-tenant SaaS platforms, subscription systems, admin dashboards, RBAC (role-based access), user management, scalable backend architecture, and enterprise workflows.
✅ 𝐌𝐕𝐏 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐟𝐨𝐫 𝐒𝐭𝐚𝐫𝐭𝐮𝐩𝐬: Turn ideas into working products quickly with scalable foundations.
✅ 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 & 𝐋𝐋𝐌 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧:OpenAI/Claude APIs, RAG systems, chatbots, and automation workflows.
✅ 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: React.js, Next.js, Node.js, Express.js, Python, FastAPI, Django, REST APIs, GraphQL, authentication systems, third-party API integrations, and cloud deployment.
✅ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠: PostgreSQL, MongoDB, MySQL, Firebase, Redis, scalable API architecture, optimized database design, caching systems, and performance-focused backend development.
✅ 𝐏𝐫𝐨𝐠𝐫𝐞𝐬𝐬𝐢𝐯𝐞 𝐖𝐞𝐛 𝐀𝐩𝐩𝐬 (𝐏𝐖𝐀): Fast, mobile-friendly web applications with offline support, push notifications, app-like experience, and responsive UI/UX.
✅ 𝐂𝐑𝐌 & 𝐈𝐧𝐭𝐞𝐫𝐧𝐚𝐥 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐓𝐨𝐨𝐥𝐬: Custom CRM systems, sales pipelines, reporting dashboards, workflow automation, employee portals, and operational management systems.
─────────────────────────────
𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊
Frontend: React.js, Next.js, TypeScript, JavaScript, Tailwind CSS
Backend: Node.js, Express.js, Python, FastAPI, Django
Databases: PostgreSQL, MongoDB, MySQL, Firebase, Redis
AI & Automation: OpenAI API, Claude API, LLM Workflows, RAG Systems
Cloud & DevOps: AWS, Vercel, Docker, APIs, Webhooks, CI/CD
Integrations: Stripe, Twilio, Firebase, Auth Systems, Third-Party APIs
─────────────────────────────
𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐈𝐄𝐒 𝐈'𝐕𝐄 𝐖𝐎𝐑𝐊𝐄𝐃 𝐖𝐈𝐓𝐇
• Fintech & Payment Systems
• LegalTech & Document Automation
• EdTech & LMS Platforms
• HealthTech & Telemedicine
• CRM & B2B SaaS Platforms
• Real Estate & Property Management
• eCommerce & Multi-Vendor Marketplaces
• Logistics & Supply Chain Systems
• AI Automation & LLM Applications
• HRMS & Workforce Management
• Analytics & Business Intelligence Tools
• Marketplace & Community Platforms
• FoodTech & Restaurant Platforms
• API Integration & Workflow Automation
─────────────────────────────
𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 𝐌𝐄
✔ End-to-end ownership (Architecture to Deployment)
✔ Focus on performance, security, and maintainable code
✔ Clear communication and consistent updates
✔ Experience building both startup MVPs and enterprise systems
I ask the right technical and business questions before starting to avoid expensive problems later. Whether you need a SaaS platform, AI integration, or a custom CRM, I help you build it properly.
Ready to start? Invite me to your job post or send a message to discuss your project.
Aishwarya M.
has worked
.
Associated with
ROWTH ENTERPRISES LLP
$35/hr
100%
Job Success
$100K+ earned
Offers consultations
Start of list.
End of list.
I am a full stack web developer highly experienced working with Python, Node JS, React JS, PHP (Laravel, Codeigniter), MySQL/PostgreSQL, CSS, HTML. **SEO**
I have more than 9+ years of experience working as a software engineer.
- Skills I possess:
1. React JS (Redux, Saga pattern),PHP (Laravel, Lumen framework) CodeIgniter, Node/js.
2. Java Script, TypeScript
3. HTML5
4. CSS3
5. Angular.JS, Vue.JS
6. Twitter Bootstrap 4
7. Ruby on Rails
- CMS, E-Commerce platforms:
1. WordPress/ WooCommerce
2. Magento 1 & 2
3. Shopify (Ajax API, Rest API)
4. Wordpress
5. Typo 3
6. Joomla
- Social networks (SDK, Rest API, etc…):
1. Facebook (many years)
2. Twitter
3. Instagram
Project Management Tools: Github, Gitlab, Trello, Basecamp, Jira etc
Let's get connected and build successful projects together :)
Nikita K.
has worked
.
$15/hr
100%
Job Success
$3K+ earned
Offers consultations
Start of list.
End of list.
I build production-grade web applications, APIs, and ERP/CRM systems — from architecture to deployment. My work spans full-stack development, database design, Telegram bot backends, and Odoo customization, with recent projects involving AI integration, ML pipelines, and encrypted infrastructure on AWS.
What I deliver
Full-stack web applications (React/TypeScript frontend + Laravel or Python backend)
REST API design, OAuth 2.0 + PKCE, role-based access control
Database architecture and optimization — PostgreSQL, MySQL
Odoo ERP/CRM: custom modules, QWeb templates, workflow automation, Telegram bot integrations (v16–v18)
Telegram bots with backend logic and database integration
AI/ML feature integration — model deployment, automation pipelines, intelligent assistants
Server setup and DevOps — AWS EC2, Docker, Nginx, Linux administration
Recent projects
AI CRM Analytics Platform (SaaS, multi-tenant)
Built a production-ready AI-powered CRM analytics platform from scratch. Sales teams connect HubSpot, Salesforce, or Pipedrive and query their live pipeline data in plain English — the AI responds using synced, up-to-date CRM data.
OAuth 2.0 + PKCE integrations for 3 CRM providers
Auto-sync every 15 min via BullMQ/Redis job queue
GPT-4o query layer with intent classification and self-learning user memory
Full CRM dashboard: contacts, deals, pipeline kanban, deal canvas, calendar
Multi-tenant architecture on Supabase/PostgreSQL, deployed on Railway
Encrypted CRM on AWS
Secure hacker/terminal-aesthetic CRM with field-level encryption (PBKDF2-HMAC-SHA256), LUKS2-encrypted EBS volume, JWT session revocation with IP binding, Dead Man's Switch, and Twilio SMS/voice integration — deployed on AWS EC2.
Odoo Custom Modules (v18)
Telegram Bot API integration, custom QWeb print templates, insurance broker management module — built as portfolio deliverables with full documentation.
Tech stack
Backend: Python, PHP (Laravel), C#, Java
Frontend: React, TypeScript, JavaScript, HTML/CSS
Databases: PostgreSQL, MySQL
Infrastructure: AWS EC2, Docker, Nginx, Linux
ERP/CRM: Odoo v16–v19
Other: Telegram Bot API, BullMQ/Redis, GPT-4o, ML model integration, REST APIs
Working style
I take on projects where technical decisions matter — where someone needs a developer who understands business logic, can own the architecture, and delivers without hand-holding. I prefer clearly scoped work and direct communication. Available for long-term collaboration or well-defined project contracts.
Roman P.
has worked
.
$35/hr
100%
Job Success
$10K+ earned
Offers consultations
Start of list.
End of list.
💻 I've built 25+ successful projects, including Telegram Mini Apps, Telegram bots, a wide range of scripts, websites, AI chatbots, Web UIs, APIs, payment integrations, browser automation bots, and much more. With this extensive experience, I'm confident I can execute your task better than anyone else.
⚡️ Hit the invite button, and let's discuss the project
✔️ Services:
- Web Scraping
- Browser Automation
- Creating Telegram Mini Apps
- Creating Bots (Telegram, Whatsapp, Discord)
- Working with API
- Creating Web UI (Flask / FastAPI / Django)
- Creating Telegram Games
- Creating API (FastAPI / Flask / DRF)
- Creating Webhooks (FastAPI / Flask / DRF)
- Python Scripts
- Scraping Data from Endpoints of API / Backend Calls
- Creating Desktop Apps (PyQT5 / Tkinter)
- Integrating AI to Projects
- Saving Data to Excel / CSV / JSON / Google Sheets
- Auto Downloading Files
- Using Apify API
- Auto Processing of Emails
- Pygame Games
- Creating Telegram Mini Apps
- Creating Telegram Games
- Scraping Data from YouTube
- Creating Notifiers to Telegram
- Deployment to Server
- Using OpenAI API
- Uploading with WooCommerce API
- Scraping Zillow / Hipcamp / Campspot
- Scraping with Selenium
- Web Analyzer
- Backend
- Creating Auto Uploaders
- Integration Binance API
- Integration ByBit API
- Integrating CoinMarketCap API
- Web Scraping from Social Medias
- Creating Web Application or Website with React & FastAPI
- Integrating payments
- Automation for YouTube
- Creating projects with YouTube API
- Processing video with Python
✔️ Stages of Work
1. You describe your preferences for the project execution and provide tech task to work with. If you don't have it, I will create it by explanation and preferences.
2. After finalizing the details, I do estimate and create plan of development for you. Throughout the process, I share to you ideas how to create project in the best way.
3. Once the estimate is approved, I start to develop the project.
4. I send you the finished project or milestone for review and await any adjustments you may have.
5. I'm always available to communicate with you and maintain project after development.
🚀 As a Python developer, I bring over 4 years of extensive programming experience to the table.
Notably, I've clinched victories in programming competitions, showcasing my prowess in the field.
Quality and speed are the hallmarks of my work.
I prioritize excellence in every task.
Customer feedback:
⭐️⭐️⭐️⭐️⭐️ "I have successfully completed several projects with Eduard and will continue to enjoy working with him. He is reliable and responds quickly and reliably to enquiries."
- Daniel K.
⭐️⭐️⭐️⭐️⭐️ "Eduard is very skilled, efficient, and creative in resolving problems that come up. Look forward to working with Eduard again."
- Kurt B.
⭐️⭐️⭐️⭐️⭐️ "Thanks Edward, very good work, helped to find a way to make the project work by looking at it from another position… end result as required!"
- Martin W.
🤍 Feel free to message me if you have any questions.
I am looking forward to working with you together!
Website Scraping, Browser Selenium Automation, Telegram Bots, Whatsapp Bots, Discord Bots, Facebook, Instagram, Reddit, Twitter / X, API, Web UI, Flask, FastAPI, Django, DRF, Webhooks, Python Scripts, Fix Bugs, Scraping Endpoints of API, Backend Calls, Desktop Apps, PyQT5, Tkinter, Integrating AI, Excel, CSV, JSON, Google Sheets API, Apify API, Automation of Emails, Pygame, Telegram Mini Apps, Scraping from YouTube, Scraping from TikTok, YouTube API, Docker, OpenAI API, WooCommerce API, Zillow, Hipcamp, Campspot, Selenium Driver, Web Analyzer, Backend, Automation, Google Cloud, Telegram Mini App, AI chatbot, integrating payment, React and FastAPI
Eduard H.
has worked
.
$25/hr
71%
Job Success
$10K+ earned
Available now
Offers consultations
Start of list.
End of list.
Your product doesn't need another developer who ships fragile code and vanishes. It needs one who takes it from idea to production and keeps it standing after launch. That's what I do. I'm a Full Stack Developer (8+ years) who builds complete products: React/Next.js on the front, Node.js and Python on the back, AI woven in natively, for founders who need to ship fast without rebuilding in six months.
I've shipped 10+ live products across fintech, healthcare, e-commerce, and education, including a legal-AI platform that helped its company raise $2M, and a learning platform now used by Yale, Tulane, and 600+ schools. Real products. Real users. Real revenue.
Hire me and you get a React developer, Node.js developer, and Python developer in one: a true full-stack engineer who owns the whole build. I work across React / Next.js / TypeScript (frontend), Node.js, Express, and Python (FastAPI, Django) on the backend, and MongoDB / PostgreSQL for data. When a project needs AI, I integrate it natively with OpenAI and modern LLM tooling (RAG, vector databases, AI agents), built into the product, not bolted on as an afterthought.
PROOF I SHIP REAL PRODUCTS:
• DecoverAI: Legal document search platform. Python backend + React frontend, RAG retrieval over a vector database. Deployed in US law firms; the company raised $2M in seed funding after launch.
• Speakology: Avatar-based language-learning platform. React/Next.js + Node.js + OpenAI voice. Adopted by 600+ schools and 12K students, including Yale University and Tulane University.
Plus 8 more production apps: healthcare clinical screening, AI sales intelligence, supply-chain forecasting, hospital management, 3D-printing e-commerce, and more. All React / Node.js / Python full-stack builds.
WHAT I DO:
• Build complete web applications from scratch: React/Next.js frontend + Node.js or Python backend + database
• Design and ship REST APIs, GraphQL, and third-party API integrations (Stripe, OpenAI, custom)
• Build and scale multi-tenant SaaS platforms and MVPs from idea to launch
• Migrate and refactor legacy code into clean, maintainable architecture, no rewrites
• Add AI features to existing products: chat, semantic search, automation, RAG, LLM integration
• Deploy and run apps on AWS with Docker and CI/CD
STACK:
Frontend: React, Next.js, TypeScript, JavaScript, Redux, Tailwind CSS
Backend: Node.js, Express, Python, FastAPI, Django, REST APIs, GraphQL
Databases: MongoDB, PostgreSQL, Redis
AI: OpenAI API, LLM integration, RAG, vector databases, LangChain, AI agent development
Cloud/DevOps: AWS, Docker, CI/CD
HOW I WORK:
I write code that matches your conventions, communicate clearly, and ship on schedule. Clients describe the work as "amazing… really dedicated and loves to think along about product improvements," and as understanding requirements quickly and delivering outstanding results. I think about the product, not just the ticket.
Available 30+ hours/week and responding within a few hours. Tell me what you're building: a SaaS MVP, an AI-powered web app, an API integration, or a rescue of an existing codebase, and I'll tell you exactly how I'd build it.
Keywords:
Full Stack Developer | React Developer | Node.js Developer | Python Developer | Web Developer | Full Stack Engineer | Backend Developer | Next.js Developer | AI Developer | JavaScript Developer | React | Node.js | JavaScript | TypeScript | Python | Next.js | Full-Stack Development | API Integration | API Development | REST API | SaaS Developer | MVP Developer | Web Application Developer | Frontend Developer | Mobile App Developer | Senior Full Stack Developer | MERN Stack Developer | Software Engineer | AI Agent Developer | AI Integration | Express.js | Django | FastAPI | PostgreSQL | MongoDB | GraphQL | AWS | Web Application | SaaS Development | Web Development | OpenAI API Integration | LangChain Developer | RAG AI Chatbot Developer | SaaS MVP Development | Claude Code | Custom Web App Development | React Native Developer | Stripe Integration | Tailwind CSS | Redux
Yash S.
has worked
.
Associated with
Apex36 Technology Services
$5K+
earned
$45/hr
97%
Job Success
$200K+ earned
Available now
Offers consultations
Start of list.
End of list.
I'm a full stack AI developer. I have built successful SaaS, CRM, Fintech, B2B and Marketplace Products from 0 to 50,000+ users. I have prior experience working at the best tech companies in the world, including Uber.
Whether you're looking to deploy your Minimum Viable Product, build a scalable App, maintain an existing platform, I can help you build, launch and scale your vision 🚀
I can help you make responsive Apps that work on Both Mobile, iPad and Desktop, across iOS, Android, Windows and Mac.
I can help with:
- 🔥 Marketplace Apps
- 🔥 SaaS Apps
- 🔥 Landing Pages
- 🔥 CRM Platforms
- 🔥 GenAI Apps
- 🔥 WebScrapers
- 🔥 VoiceAI Integrated Apps
- 🔥 Anything else you can dream of
Working with me, you'll get best-in-class experience across multiple skillsets:
- Full Stack Development
- API Integration
- Social Features Integration (Facebook, Google etc)
- AI Integration (ChatGPT, HuggingFace, Opensource Models such as Llama)
- Direct SQL for integration with separate databases
- AWS Lambda deployment if needed
- UI/UX Design (Figma)
- Google Firebase
- Data and Dashboarding (Looker Studio)
- SQL Database Creation
- Java
- Kotlin
- Bubble Development
I'll make sure that your product is up and running as fast as possible, with Weekly Updates. More importantly, I make sure that you have the best possible experience with me.
I'm more than happy to get on a free call to discuss your problem and guide towards the best possible solution.
I'm available to talk in all US timezones, 7 Days a week.
So drop me a message, and see your vision come to life!🚀
Saad D.
has worked
.
$30/hr
100%
Job Success
$70K+ earned
Offers consultations
Start of list.
End of list.
I’m a senior AI developer with 6+ years of experience building intelligent, LLM-powered web applications. I specialize in integrating ChatGPT, OpenAI APIs, and LangChain to deliver smart, scalable solutions that streamline business workflows and enhance user engagement.
🔧 AI Development Services I Offer:
• Custom ChatGPT & OpenAI Chatbots: Boost engagement with tailored AI chatbots.
• API Integration (OpenAI, Assistant API): Seamlessly add AI to your apps and platforms.
• AI Virtual Assistants: Automate customer support and internal tasks.
• DALL·E/GPT Image Generation: Create unique visuals with generative AI.
• LLM Fine-Tuning & Function Calling: Improve accuracy and extend chatbot functionality.
• AI-Powered Web Apps: Full-stack development using AI/ML tools like LangChain, RAG, and HuggingFace.
• Web Scraping & Data Automation: Automate labeling, classification, and extraction tasks.
• Custom AI Solutions: Designed around your business needs.
• Install Local LLM: Deploy and run an open-source LLM on your own machine for full control and privacy.
🛠️ Tech Stack:
• LLMs: GPT-4, GPT-4o, Claude, Gemini, LLaMA, Deepseek
• Languages: Python, JavaScript, PHP
• Frameworks: LangChain, Flask, FastAPI, Laravel, Gradio, Streamlit
• Databases: MySQL, PostgreSQL, Pinecone
• AI Tools: OpenAI, HuggingFace, DALL·E, Stable Diffusion, Azure AI Search
• Bots: WhatsApp, Telegram, Slack, Discord
• No-Code: N8N
• Cloud: Azure, Azure OpenAI
🏅 What Clients Say:
⭐️⭐️⭐️⭐️⭐️ “Quick turnaround and exactly as requested.”
⭐️⭐️⭐️⭐️⭐️ “Amazing coder, fast and really skillful. Will work with him again.”
⭐️⭐️⭐️⭐️⭐️ “Perfect and always friendly! Work was done in 2 days. Perfect!”
If you’re looking for AI integration, custom AI development, or LLM-based applications, feel free to send me a message with your project details.
Zein I.
has worked
.
$30/hr
100%
Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
End of list.
📢 Available for new projects 📢
I'm a Senior Java Developer with more than 10 years of commercial experience building stable, scalable, and secure backend systems. I specialize in Spring Boot microservices and cloud-native architecture — and I've shipped production systems in Fintech, EdTech, Healthcare, Retail, Hospitality, etc.
My core strength is backend architecture: clean APIs, event-driven systems, and services that scale. I also work across the full stack development when needed — React on the frontend, Node.js for integrations, and AWS for deployment and infrastructure.
What I bring to your project:
- Production-grade Spring Boot microservices and REST APIs
- Cloud infrastructure on AWS with Docker and CI/CD pipelines
- Full-stack capability: Java backend + React frontend
- Relational and NoSQL databases: PostgreSQL, MySQL, MongoDB
- Clean, maintainable code with TDD and Agile workflows
I've worked on SaaS platforms, enterprise systems, and MVPs — from initial architecture through to deployment.
Go-To Stack:
Java (Spring Boot, Spring Cloud, Hibernate) · React · Node.js · AWS · Docker · PostgreSQL · MongoDB · Jenkins · GitFlow
Ready to start - just drop me a message and we will start working!
Yurii P.
has worked
.
Associated with
dotcode
$500K+
earned
United Arab Emirates
$60/hr
87%
Job Success
$500K+ earned
Offers consultations
Start of list.
End of list.
I am a Top Rated Python and .NET Developer with 16,000+ hours on Upwork and extensive experience helping companies build reliable REST APIs, integrate AI services, and ship production-ready backend systems on AWS and Azure.
If you need a Python or .NET developer who can handle AI integration (OpenAI, AWS Bedrock, Azure OpenAI, Gemini, or any LLM API), cloud automation, and REST API development without hand-holding or vague timelines, that is exactly what I deliver.
What I can help you with:
• Python backend services: FastAPI, Flask, REST API development
• .NET and C# Web APIs using ASP.NET Core
• AI integration: OpenAI, AWS Bedrock, Azure OpenAI, LLM APIs, and RAG pipelines
• AWS: Lambda, S3, SQS, API Gateway, EC2, and serverless automation
• Azure: Azure Functions, Azure OpenAI, cloud services, and background jobs
• API integration and third-party system automation workflows
• SQL Server, PostgreSQL, Redis: performance tuning and reliability
• React-based admin panels when full-stack ownership is needed
Clients usually hire me to:
• Modernize legacy systems without breaking production
• Diagnose and fix unstable APIs or backend issues
• Build new backend features with clean architecture and solid validation
• Add AI capabilities into existing applications in a practical, maintainable way
• Improve deployment confidence, observability, and handover quality
How I work:
• Clear communication and fast response, so you always know where things stand
• Practical planning with concrete next steps before writing a single line of code
• Production-focused engineering with logging, error handling, testing, and maintainable code
• Reliable delivery without unnecessary complexity
If you have an existing codebase, I can quickly review the setup, identify the highest-priority issues, and propose the best path forward.
If you are starting something new, I can help design and build it in a way that is clean, scalable, and easy to maintain long term.
16,000+ hours. 129 jobs. Let's build something that works.
Lalit R.
has worked
.