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Oleksandr S.
$40/hr
100% Job Success
$1K+ earned
Offers consultations
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Python Full Stack Developer who steps in where products stall - fixing broken ownership, tightening architecture, and turning messy delivery into a system that actually ships 10+ years in web product development, I now lead UASOFTDEV as CTO & Co-Founder, building and scaling teams of senior Ukrainian engineers who can integrate fast and take real technical responsibility from day one. If your product is slowed down by handoff gaps, weak architecture, or fragmented ownership, I help turn it into a clear delivery process with strong technical control My strongest core role is a python developer for backend-heavy products, with additional experience in C# .NET when projects require enterprise-grade backend logic. When the scope expands, I work as a full stack developer with end-to-end ownership, or as a web developer focused on scalable execution. 📌 What I typically cover Web and Mobile Development backed by 10+ years of product work, supported by a python full stack developer approach when APIs and UI must evolve together Full-Stack Development aligned into 1 clear delivery flow, shaped through python full stack thinking for faster releases and fewer handoff gaps E-commerce Web Development across 3 core layers - business logic, integrations, and user flows - delivered with full stack python experience API development and Integration for internal platforms and 3rd-party systems, handled in a full stack developer python role when architecture must stay practical ⚙️ My current capability set covers React with JavaScript, Next.js, Nest.js and TypeScript, plus Vue.js and Angular. On the backend, I work with Node.js, laravel, python, Django, Flask, .NET, C++, Go, Ruby on Rails and Java. Mobile and cloud delivery includes iOS, Android, flutter, React Native, AWS, Azure, GCP, Docker, Kubernetes, and openstack. I also support CMS and platform work through wordpress, Drupal, Symfony, Magento and Shopify. 🛠️ Delivery across product layers Lean API products often benefit from a python full stack developer flask setup User-facing systems need a full stack web developer mindset when flow affects adoption Interface-heavy platforms grow faster with a full stack developer react profile Cross-layer execution works well in a full stack developer react python environment System reliability improves early with a backend python developer focus 🤖 I build AI features for real workflows, not for demo value alone. In that context, I work as a python ai developer on assistants, automation and internal tools. My python ai work is strongest where adoption matters, and clients also bring me in as an ai developer or ai software developer when implementation must connect product, backend, and rollout. 🧠 AI, frontend, and product execution ✔️Practical ai machine learning features tied to support, search, and operations ✔️Applied machine learning developer work when smart functionality must fit an existing product ✔️Business-facing machine learning integrations designed for measurable value ✔️Custom chatbot systems built with react python flows and fastapi services ✔️Scalable UI delivery as a react developer with clean html front end execution and thoughtful app design ☁️ I stay close to architecture because strong delivery depends on clear ownership. That is why I regularly handle back end development, step in as a backend developer when technical decisions affect release quality, and support python devops workflows across cloud and deployment planning. 🔧 Collaboration and adjacent exposure In a startup, delivery often means working beside a data scientist, then translating that work with a product manager into usable features. Release quality improves when a qa analyst joins early, especially in products shaped by compliance. Some founders also involve me as a startup consultant before code begins. ✔️Broader platform exposure includes sharepoint workflows, material ui dashboards, payment gateway implementation ✔️Cross-team delivery has also touched full stack java environments and adjacent java devops processes. ✔️Finance-related work has included trading python flows, algorithmic trading logic, binance integrations, and tools built for a trader. ✔️Adjacent product contexts have involved data entry operations, support for a journalist workflow, technical resume writing solutions, selected dall-e use cases, prototype work around crypto bot ideas, and tools requested by gaming developers. ✔️Growth-focused engagements may also involve a seo specialist, a practical it consultant, or teams building in marketing saas. 🌍 My domain expertise includes AI Startups, Data Analytics, Healthcare, Fintech, E-commerce agencies, IT Consulting/Softdev companies, Real Estate, Non-Profit, Blockchain and Gambling 🤝 If you need senior technical ownership Python Full Stack Developer, fast ramp-up and delivery that stays aligned with business goals, let’s talk."
Oleksandr S. has worked .
Sergii M.
$45/hr
100% Job Success
$20K+ earned
Offers consultations
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🏆 Python Developer with 19,000+ hours delivering solutions | 98% Job Success Score | 24+ projects completed on time 💬 Client Reviews Python developer: ⭐⭐⭐⭐⭐ "Sergey did an excellent job on this project. The results were exactly as I needed them. He understood the requirements and how to implement the project very well. I have since hired him again for further work." ⭐⭐⭐⭐⭐ "This was a very complex problem. Sergy understood the project very well and did an excellent job developing a solution that we use daily now." 🎯 What I Bring as a Python Developer: • 9+ years of experience building scalable backends and microservices with Python, FastAPI, Django, and Python Full Stack Developer Flask • Expertise in deploying production-ready applications on AWS, Heroku, Fly.io, DigitalOcean, and VPS with fully automated CI/CD pipelines • Proficient in AI integrations, data pipelines, predictive analytics, and designing microservices for complex systems • Proven track record in leading teams, Python web development, and building solutions from the ground up 🐍 Python Developer Tech Stack: • Backend Frameworks & Languages: Python, FastAPI, Django, Flask, Django Rest Framework, Celery, GraphQL, REST APIs, Microservices Architecture • Databases: PostgreSQL, PostGIS, MySQL, MongoDB, MS SQL, Redis, SQLite, Amazon Aurora • Cloud & DevOps: Docker, AWS, Azure, Heroku, Fly.io, DigitalOcean, VPS, CI/CD pipelines, GitHub Actions, GitLab CI, Ansible, Nginx, python aws • Frontend Frameworks & Full-Stack: React, JavaScript, TypeScript, jQuery, HTML, CSS, Bootstrap, Highcharts • AI & Data: Machine Learning, NLP, Sentiment Analysis, Predictive Analytics, Data Pipelines, PyTest for TDD, OCR, Optical Character Recognition, Microsoft Face recognition, Azure AI Face service, machine learning python and python data science • Tools & Platforms: Keycloak, OpenShift, Kong Gateway, Apache Mesos, Apache Aurora, Postman, Figma, Google Apigee API, OCR (Optical Character Recognition) with world-class Google Cloud AI 🏗️ Projects I’ve Led as a Python Developer aws: • Healthcare: Built family appointment systems, DNA test purchasing platforms, and patient portals integrated with insurers • Healthcare: Developed and scaled high-throughput RESTful APIs in python web development using Flask and Python microservices • Agritech: Created a grain price dashboard with real-time market data for traders • Telecom: Developed a cell tower mapping platform as a Python full stack developer with geocoding functionality • Product Companies: Engineered AI-powered tools for code conversion as a python django • Retail & Healthcare: Delivered an AI-driven translation service for a medical corporation • Retail: Developed AI-powered tools for sentiment analysis of reports and articles for a manufacturer with python web scraping • Fintech: Built a secure web wallet with multi-currency exchange, blockchain integration, as python code review • Automotive: Designed predictive models for sales forecasting and python ai developer 🏢 Industries for the Python developer: I have successfully delivered projects across Healthcare, Agritech, Telecom, Retail, Fintech, Automotive, and B2B domains 🔧 Roles I Commonly Take On: • AI-Focused Python Developer creating workflow automation using OpenAI and AI integrations • Python Full Stack Developer flask helping high-growth startups scale reliably and efficiently • Python AI developer specializing in building robust, scalable APIs with Python • DevOps Python developer AWS implementing CI/CD pipelines for Django, Flask, and FastAPI applications • Python Django delivering end-to-end solutions in Django and React • Python Full Stack Developer Flask • Machine Learning Python • Python web scraping 📊 Key Achievements: • Developed automation scripts that saved clients 100+ hours/month in manual work • Engineered systems supporting over 30,000 daily active users with zero downtime at launch • Orchestrated 4,000+ concurrent translation tasks • Achieved over 83% unit test coverage on complex integrations • Migrated legacy systems with 100% data integrity preserved • Integrated 35+ third-party APIs seamlessly into production systems • Automated broker commission calculations, reducing processing time by 70% • Passed all security audits with 100% compliance • Optimized high-load database queries, cutting response times by 50–70% 🤝 I’m Open To: • Rapid MVP development to validate business ideas and go to market faster • API design development • Python full stack developer roles and React frontend • AI/ML solutions for automation, analytics, and workflow efficiency • Legacy system modernization pyton developer to modern tech stacks You can find me as a python full stack developer or web developer or a php developer or a python web scraping developer 🚀 Time to move forward? Let’s connect to talk through: • Where your project stands today • What success looks like for you • How can I help you get there, as your Python developer partner
Cloverity OÜ (Python, FastAPI, React, AI)
Associated with
Cloverity OÜ (Python, FastAPI, React, AI)
$10K+
earned
Roman H.
$45/hr
100% Job Success
$1K+ earned
Available now
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👋 Need a python Full stack developer and Python AI Developer who can ship production-ready AI products, not just prototypes? I'm Roman, a Python Full stack Developer and Python AI developer with 5+ years in scalable web development and 2+ years in AI/ML. I have built AI systems for skincare, corporate LMS, real estate and SaaS, including a multilingual assistant for a company with 100+ branches and an AI SaaS chatbot platform built over 11 months. What I can help with: ✓ AI chatbot development with RAG, memory and business logic ✓ OpenAI / Claude / LLaMA integrations for SaaS, CRM, support, and internal tools ✓ AI agents trained on company documentation, knowledge bases, and enterprise data ✓ python fastapi API development for scalable AI backends ✓ React / Next.js dashboards connected to Python AI systems ✓ Database architecture, API integration, cloud deployment, and performance optimization ✓ Custom machine learning workflows, benchmarking, data pipelines and analytics ⚡My work combines python full stack engineering, python fastapi backends, LLM architecture and business-focused delivery that reduces manual work and improves user experience. As a python full stack developer, I build full-cycle products from database design and API architecture to React / Next.js interfaces, deployment and long-term optimization. My core stack includes python full stack, Python Fastapi, Flask, Node.js, React, TypeScript, PostgreSQL, MongoDB, Supabase, AWS, Azure, Vercel, REST APIs, WebSockets, Tailwind CSS, and Material UI. As a Python AI Developer, I create AI chatbots, RAG systems, AI agents, document intelligence tools, recommendation engines, and automation workflows. I work with OpenAI, Claude, LLaMA, LangChain, LangGraph, LlamaIndex, vector databases, prompt engineering, ReAct agents, and llm integration for real business use cases. 🤖 AI/ML Solutions I Build 📌 LLM-Powered Applications → Custom AI chatbots with RAG (Retrieval-Augmented Generation) → Multi-agent systems using LangChain & LangGraph → Context-aware conversational AI that maintains conversation flow → Integration with GPT-4, Claude, LLaMA models 📌 Intelligent Automation & Agents → ReAct systems (Reasoning + Acting) for complex workflows → Document parsing and knowledge extraction (LlamaIndex) → AI agents trained on internal documentation and enterprise data → Multi-language support with automatic language detection 📌 Smart Recommendations & Analysis → AI-powered recommendation engines → Image analysis and classification systems → Custom ML models for specific business use cases → Performance optimization for production environments 📌 Full-Stack Integration → RESTful API development and integration → Real-time data handling with WebSockets → Database design (PostgreSQL, MongoDB, Supabase) → Cloud deployment (AWS, Azure, Vercel) 💡 Recent AI Projects & Real Results Recent work includes an AI skincare recommendation system that analyzes customer inputs and recommends products, a corporate LMS AI assistant for 100+ branches, a real estate rental assistant using landmarks and neighborhoods instead of only addresses, and a full-stack SaaS AI chatbot platform with multi-agent logic and RAG capabilities. 🛠️ Technical Stack My experience covers both product engineering and AI development. On the engineering side, I build SaaS platforms, dashboards, APIs, admin panels and automation systems as a python full stack developer ( backend python developer ) backend developer and web developer. On the AI side, I work as a Python AI developer and AI Developer, supporting chatbots, RAG systems, llm integration, OpenAI workflows, benchmarking, machine learning and data science tasks for real business use cases. ⚡My approach is simple: clarify the business problem, design cost-conscious architecture, build clean and maintainable code, show progress through regular demos, and transfer knowledge so your team can use and maintain the system confidently. Additional relevant experience: I have worked around startup products and teams involving laravel, wordpress, sharepoint, moodle lti, flutter, material ui, html front end, payment gateway, back end development, full stack developer react, full stack java, marketing saas, mls, mls idx, real estate photo, ai video, crypto bot, trading python, dask, pandas, data entry, oxwall, qa analyst, ux designer, product manager, it consultant, seo specialist, journalist content workflows, technical resume writing, python full stack, python fastapi, python ai, llm integration, openai, and custom business automation. 🤝If you need a reliable python full stack developer who can own the full product workflow, or a python ai developer who can build practical AI systems with python fastapi, python ai, llm integration, openai, and scalable architecture, send me a message and let’s discuss your project.
Roman H. has worked .
Mobian
Associated with
Mobian
$1M+
earned
United  S.
$20/hr
100% Job Success
$100K+ earned
Offers consultations
Start of list.
End of list.
I’m a highly skilled Full Stack Developer with over 4 years of experience, specializing in developing high-performance, scalable web applications. With a solid foundation in Computer Science and advanced expertise in Data Science, I bring both theoretical knowledge and practical skills to solve complex technical challenges. 🔧 Core Expertise: ✅ ✅ Programming Languages: Python, JavaScript, HTML, CSS ✅ Backend Frameworks: Django, Flask, FastAPI and Node Js ✅ Frontend Frameworks: React.js, Next.Js, Bootstrap, Material-UI ✅ API Development: RESTful APIs, GraphQL, API Design & Integration ✅ Database Management: PostgreSQL, MySQL, SQLite, MongoDB ✅ Web Scraping & Data Processing: BeautifulSoup, Scrapy, Selenium, Pandas ✅ Microservices & Containerization: Docker, Kubernetes, API Gateway ✅ DevOps & CI/CD: Docker, Kubernetes, Jenkins, GitHub Actions ✅Cloud Platforms: AWS, Google Cloud, Microsoft Azure ✅Security: SSL/TLS, OAuth, JWT, Security Best Practices ✅Testing & Debugging: Unit Testing, Selenium, Postman ✅Agile Methodology: Scrum, Kanban, Jira 🎯 Why Choose Me? I deliver clean, scalable code and innovative solutions that are tailored to your specific needs. Whether you need a robust backend, a dynamic frontend, or seamless API integration, I’ve got you covered. My experience with cloud platforms, microservices, and CI/CD pipelines ensures that your applications are not just functional but also efficient and future-proof. I’m committed to delivering high-quality solutions that drive long-term value for your projects. Educational Background: ✅ Bachelor’s Degree in Computer Science ✅ Master’s Degree in Data Science Let’s work together to bring your project to life with precision, reliability, and a focus on long-term success. I’m ready to partner with you to achieve your business goals through top-tier software development and data-driven insights.
United S. has worked .
Karapet P.
$42/hr
100% Job Success
$1M+ earned
Available now
Offers consultations
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I am a TOP RATED PLUS Senior Full Stack Developer with 15+ years of experience and more than 34,000 hours completed on Upwork, specializing in Python, Django, React, and scalable SaaS application development. I build modern, production-ready platforms from end to end — combining backend architecture, frontend engineering, database design, API integrations, cloud infrastructure, and DevOps into complete full stack solutions. I work closely with startups, founders, and established businesses to transform concepts into scalable digital products. Over the years, I have delivered 85+ MVPs, SaaS platforms, internal tools, dashboards, marketplaces, and enterprise applications, helping companies validate ideas, launch faster, secure funding, and scale with confidence. My expertise covers the full software lifecycle — from technical planning and product architecture to development, deployment, optimization, and long-term maintenance. I specialize in designing clean, modular systems with scalable backend services, responsive frontend experiences, efficient data structures, and maintainable codebases built for growth. On the backend, I primarily work with Python, Django, Flask, FastAPI, Node.js, Express.js, and NestJS to build secure, high-performance APIs, authentication systems, business logic layers, asynchronous workflows, task queues, microservices, webhook systems, and event-driven architectures. I have extensive experience developing RESTful APIs, GraphQL endpoints, WebSocket-based real-time systems, background workers, cron jobs, and third-party integrations. On the frontend, I build modern interfaces using React, Next.js, Vue.js, Angular, TypeScript, JavaScript ES6+, Redux, Context API, and component-based architecture. I focus on responsive design, reusable UI systems, SSR/SPA applications, accessibility, SEO optimization, frontend performance, hydration strategies, routing, and advanced state management. My database expertise includes PostgreSQL, MySQL, MongoDB, Redis, SQLite, and ORM-based modeling. I regularly design relational schemas, optimize queries, implement caching strategies, indexing, replication, and performance tuning for large-scale applications. I also specialize in AI-powered product development, integrating OpenAI, GPT-4, LLM workflows, vector databases, embeddings, recommendation engines, NLP pipelines, AI assistants, automated classification systems, intelligent search, and workflow automation. --- Selected Project Experience -DogVacay Worked from the earliest product stages; later acquired by Rover in a $50M+ acquisition -CompTool Built from scratch; currently serving 1,000+ active clients -FairyGodBoss Developed core platform through early growth and Series A phase -ReviewRamp** Helped build from day one through acquisition (~$4M exit) -- Full Stack Technology Expertise -- -Backend & APIs * Python, Django, Flask, FastAPI * Node.js, Express.js, NestJS * Ruby on Rails, Laravel, Symfony, CodeIgniter * REST APIs, GraphQL, WebSockets, microservices, event-driven systems * Authentication, OAuth, JWT, RBAC, multi-tenant systems -Frontend Engineering * React, Next.js, Vue.js, Angular * TypeScript, JavaScript ES6+, Redux, Zustand, Context API * HTML5, CSS3, Tailwind CSS, Bootstrap, SASS, LESS * SPA, SSR, ISR, PWA development * UI component libraries, responsive design, accessibility -Database & Infrastructure * PostgreSQL, MongoDB, MySQL, Redis, SQLite * Prisma, ORM design, schema architecture * Query optimization, caching, indexing, scaling -Cloud & DevOps * AWS (EC2, S3, Lambda, RDS, CloudFront, Cognito, API Gateway, CloudWatch, VPC) * Docker, Kubernetes, Jenkins, GitHub Actions, GitLab CI/CD * Infrastructure automation, monitoring, deployment pipelines -Mobile & Cross-Platform * React Native, Flutter * Firebase, push notifications, real-time sync * Swift, Kotlin, mobile API integrations -Third-Party Integrations * Stripe, PayPal, Twilio, SendGrid, Mailchimp * Google Maps, Mapbox, CRM systems, marketplace APIs * Shopify, HubSpot, Salesforce, analytics platforms I focus on building long-term technical foundations rather than temporary solutions. My approach combines strong full stack engineering, scalable architecture, business understanding, and clear communication to ensure products are both technically sound and commercially successful. If you need a senior full stack partner to build a SaaS product, AI platform, custom dashboard, marketplace, API-driven application, or scalable MVP, I’d be happy to discuss how I can help bring your vision to life.
Karapet P. has worked .
Scrumly
Associated with
Scrumly
$2M+
earned
Roman L.
$50/hr
92% Job Success
$200K+ earned
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𝐓𝐨𝐩 4% 𝐏𝐲𝐭𝐡𝐨𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐚𝐜𝐜𝐨𝐫𝐝𝐢𝐧𝐠 𝐭𝐨 𝐂𝐨𝐝𝐞𝐫𝐬𝐑𝐚𝐧𝐤 delivering full-stack web and mobile app development with a focus on AI automation, API integration, and data-driven engineering. Building and developing scalable web applications, platforms, and software tools using Python, Django, FastAPI, Flask, React, Angular, and OpenAI API, creating intelligent, high-performance digital products. Expert in connecting front-end and back-end technologies to ensure seamless user experience and maintainable architecture. ⚡ Highlights 🏆 8+ years of experience | 46+ successful projects 🤖 Expertise in AI development, ChatGPT integration, and machine learning 🧠 Proven record in SaaS, FinTech, Healthcare, and Education platforms 💡 Notable Projects 🧠 Sembli AI — AI assistant for meeting transcription and summaries using Python, React, Flask, and OpenAI API. 📊 Simba — AI-powered Marketing Analytics Platform. ChatGPT-based assistant built with Python, Flask, React, Pandas, Tailwind CSS, and S3. 🪙 Google Ad Grants Tool — AI automation for keyword structuring using OpenAI API, Python, React, and web scraping crawlers. 🧩 Tech Expertise Languages: Python, JavaScript, TypeScript, PHP, HTML, CSS, SQL Frameworks: Django, Django REST Framework, Flask, FastAPI, React, React Native, Angular, Node.js, Next.js AI / ML / Data Science: Artificial Intelligence, Artifical Intelligence, Artificial Inteligence, Machine Learning, Deep Learning, ChatGPT, GPT-3, OpenAI API, Data Analysis, Pandas, NumPy, neural networks, embeddings, Python scripts, AI chatbot development, AI automation Data Scraping & ETL: Scrapy, Selenium, BeautifulSoup, Splash, Data Scraping, ETL pipelines, Excel, data engineering, visualization dashboards Backend & API Development: RESTful APIs, API Integration, GraphQL, OAuth, WebRTC, Socket, RPC, Zapier, Stripe API, PayPal API, payment gateways Frontend: Responsive design, React Components, Tailwind CSS, UI/UX, front-end optimization Cloud & DevOps: AWS, Google Cloud (GCP), Firebase, Docker, Kubernetes, Heroku, CI/CD, Git Databases: PostgreSQL, MySQL, MongoDB, Redis, SQLite Testing: Pytest, Selenium, Cypress, Puppeteer Experienced in full-stack / fullstack / full stack / front-end / frontend / front end / back-end / backend / back end software engineering and application development across web platforms, mobile systems, and AI-driven apps. Additional experience includes AWS Developer work, code review, Excel data automation, and MPPT-based smart control systems. Also skilled as an Artificial Intelligence Engineer with expertise in full-stack architecture and AI integrations. 🌍 Industries 📍 SaaS & B2B Platforms 📍 FinTech & Analytics 📍 Healthcare & Telehealth 📍 Education, E-learning & LMS 📍 Non-profit & Social Good 📍 Marketing, SEO & CRM 📍 Media, Music & Social Platforms 🧱 Project Types ✅ MVP, SaaS MVP, startup prototype, and clickable Figma prototype ✅ AI & ML application development ✅ Web & mobile app creation ✅ REST & GraphQL API integration ✅ Workflow automation and data scraping solutions ✅ Payment gateway (Stripe, PayPal, EOS) ✅ Business intelligence dashboards ✅ CMS & WordPress website development 🔧 Approach The focus is on building scalable, intelligent web solutions that automate workflows, analyze data, and deliver seamless digital experiences. Every product whether a web app, mobile application, or AI-powered platform is created with clean code, maintainability, and innovation in mind. Projects are engineered to combine Artificial Intelligence, data science, and modern web technologies to bring clients’ ideas to life from prototype to enterprise system. 🤝 Collaboration Open to working with: 🏆 Startups (MVP & SaaS prototyping) 🏆 SMBs & Enterprises (process automation, web apps) 🏆 Non-profits (AI & data-driven impact tools) Ready to create your next AI-powered product? Let’s build and develop your next intelligent digital product turning ideas into reality through smart engineering and AI innovation.
Roman L. has worked .
Jellyfish.tech
Associated with
Jellyfish.tech
$1M+
earned
Volodymyr S.
$60/hr
100% Job Success
$400K+ earned
Available now
Offers consultations
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$53M+ Raised by Clients | 84+ Products Delivered | 100% Job Success | 14 Years in SaaS ✅ 14 years as CTO & Founder of Gearheart, Enterprise SaaS product development studio ✅ Co-Founder & CTO at Beyond the Wow, an AI-native MVP studio ✅ Helped 84+ startups and growth-stage SaaS teams scale their products ✅ Built SmartSuite from scratch — $38M raised, 7M+ users ✅ 2–4x faster delivery using Claude Code, Lovable, Cursor, and Replit ✅ Top Developer at Clutch and Goodfirms I'm a CTO with 20 years of engineering experience, specializing in Python Full Stack Developer SaaS and Full Stack Developer React architecture. I've learned that most founders don't fail because they can't build, they fail because they build the wrong thing. My job is to make sure that doesn't happen to you. As an MVP Developer, I focus on SaaS architecture and MVP Development — taking products from idea to live in weeks. My team delivers Full Stack Developer React and Python engineering with AI API Integration built in by default. Behind me is a team of 23 senior engineers with 14 years in SaaS — together we've shipped 84+ products for 70+ clients across 7 countries. Whether you need AI SaaS Development, a lean SaaS MVP, or full-scale SaaS Business Development — we bring both the speed and the engineering depth to make it production-ready. 🌟OUR ENGINEERING STANDARD Our standard for MVP Development comes from Gearheart, where we've spent 14 years as a SaaS Developer studio building enterprise products: - SmartSuite — SaaS Developer and MVP Development from scratch: $1.2M ARR in 4 weeks, $38M raised, trusted by Capital One. Coordinated with up to 4 external teams simultaneously - Globalli — Python Full Stack Developer SaaS and SaaS Developer project: HR/payroll across 125+ countries, SOC2 Type II, $15M raised. 15+ modules, 21 engineers at peak, 3 years 🔧 WHAT I CAN HELP YOU WITH - Discovery & Prototype: For every MVP Developer engagement — clickable prototype in 5 days using AI Development tools: Lovable, Replit, Cursor - Rescue Diagnosis: Code broken in production? Full review by senior Full Stack Developer React and AI Development engineer. QA, security audit, sprint plan - MVP & Landing Page: MVP Development in 3 weeks — 2–4x faster than traditional agencies. AI API Integration, auth, onboarding, deployment included - Sprint Subscription: Ship features on a regular sprint pace. Your long-term Full Stack Developer React, SaaS Developer and MVP Developer partner ⚡ OUR MVP SPEED - Legal SaaS platform + AI API Integration knowledge base → ~2 months - AI Receptionist with AI API Integration + CRM → shipped in weeks - B2B Dental Referral SaaS — MVP Developer delivery → 3 weeks - Medical device MVP Development — ICP + PMF + build → 2 weeks 💡WHY WORK WITH ME - Product Thinking First: We start at "should you build this?" not "what do you want us to build?" Most developers skip this entirely. We don't - AI Speed, Engineering Quality: We use Claude Code, Lovable, and Cursor as engineers, not prompt writers. AI Development is 2–4x faster without sacrificing production readiness. Need AI SaaS Development or MVP Development? We do both - We're Startup Founders Too: As founders ourselves, we know firsthand the challenges you're facing — including where AI Development fits and where it doesn't - Offshore Pricing, Enterprise Standard: Ukraine-based SaaS Developer team. Competitive pricing. Enterprise-level SaaS Developer quality — delivered by Python Full Stack Developer SaaS and Full Stack Developer React engineers who've built at scale Our team has delivered AI SaaS Development projects, Full Stack Web Developer builds, and App Developer with AI integrations — enterprise standard Our engineers cover the full stack: Software Developer tooling, REST API architecture, Web Developer interfaces, App Developer delivery. Whether you need a React Developer who owns the full product or a team that scales with you — we've done it both ways. We've worked with 70+ clients as an MVP Developer and SaaS Developer team — from early-stage founders to growth-stage companies across 7 countries. 30% return for their next product. Our Python Full Stack Developer SaaS and Full Stack Developer React engineers have built systems where AI Development is not optional — it's the delivery model. AI API Integration is embedded in every MVP Development sprint from day one. As an MVP Developer team: $400K+ on Upwork | 100% Job Success. AI Development and Python Full Stack Developer SaaS approach gives you depth without agency overhead. ⚙TECH STACK AI & Integration: AI API Integration: Claude Code, OpenAI, FastAPI, LangChain Frontend: Full Stack Developer React: React, TypeScript, Next.js, Vue.js Backend: Python Full Stack Developer SaaS: FastAPI, Django, Node.js, GraphQL, PostgreSQL DevOps: AWS, DigitalOcean, Docker, Kubernetes Every Python Full Stack Developer SaaS project we take on includes MVP Developer speed, AI Development, and AI API Integration by default
Volodymyr S. has worked .
Gearheart.io
Associated with
Gearheart.io
$60K+
earned
Pavel O.
$39/hr
100% Job Success
$400K+ earned
Available now
Offers consultations
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💼 Python Developer | Python Django | Python Web Scraping | Python Full Stack Developer | Python AI | Python Automation 🏆 TOP RATED PLUS | 💰 $5M+ Client Revenue | 💼 111+ Projects Delivered | ✅ 11,000+ Upwork Hours 💡 Clients Achieved: 🚀 Raised $4.9M+ / $9.4M+ / $6M+ after product development 📈 Scaled platforms to millions of users & billions of operations ⚡ Reduced system load & response time with optimized Python architectures 💰 Automated payments, workflows, and analytics → higher ROI & efficiency 🏥 Built secure, compliant systems (HIPAA, GDPR) used by global organizations I am a Python Developer, Python Full Stack Developer, Python AI Developer, and Python AI Engineer with 10+ years of experience building scalable web platforms, SaaS products, AI systems, and high-performance backend architectures. As a Python Developer, I specialize in designing clean architecture, scalable systems, performance optimization, and production-ready solutions that support real business growth. I work as a Python Full Stack Developer (Python + React / Next.js), combining powerful backend engineering with modern frontend development to deliver complete end-to-end applications. My expertise includes Python Django development, Flask development, and FastAPI development, building robust APIs, microservices, and distributed systems. I am also a Python Automation Engineer and Python Web Scraping Specialist, building intelligent automation systems, data extraction pipelines, and large-scale Python web scraping solutions for business intelligence, analytics, and AI-driven data processing. I design reliable scraping architectures that handle complex, high-volume data at scale. As a Python AI Developer, I build AI-powered applications, NLP systems, automation workflows, and data-driven intelligent platforms integrated with modern Python frameworks and cloud infrastructure. ⚡ Core Expertise as a Python Developer Python Full Stack Development (Python + React / Next.js) Python Django Developer, Flask Developer, FastAPI Developer Python AI Development & Machine Learning Integration Python Automation Engineering for business workflows Python Web Scraping & Data Extraction Systems Scalable backend systems, APIs, and microservices Cloud & DevOps (AWS, Docker, CI/CD pipelines) High-performance, production-grade Python systems 🚀 Selected Projects The Skills ($4.9M raised) 🎓 – Built and scaled an e-learning platform with payments, subscriptions, and mobile apps. As a Python Developer, helped launch a product used by thousands of users worldwide. Veeqo (acquired by Amazon) 📦 – Developed retail infrastructure processing £1B+ in orders. Optimized backend performance, integrated Stripe, and reduced server load using AWS Lambda as a Python Developer. Creyos (75K+ users, healthcare) 🏥 – Built a HIPAA-compliant cognitive assessment platform used by global research institutions. As a Python Developer, worked on secure data systems, scaling, and performance. CityFALCON ($6M raised) 📊 – Created a real-time NLP-powered financial news platform processing millions of articles daily. Designed scalable backend architecture as a Python Developer. ⚡ What I Deliver as a Python Developer Clean, scalable Python AI systems and backend architectures High-performance Python Django / Flask / FastAPI applications Python Full Stack Development (React / Next.js integration) Python Automation & Python Web Scraping solutions AI-powered Python applications and intelligent workflows Secure, compliant systems (GDPR, HIPAA-ready architectures) End-to-end product delivery from idea to production Client Testimonials ⭐⭐⭐⭐⭐ “Very professional! Pleasure to work with. Will definitely use again.” ⭐⭐⭐⭐⭐ “Super reliable, fast, and with clean, well-structured code. Communication was smooth and always on time.” ⭐⭐⭐⭐⭐ “Very satisfied with the work.” 💼 Why Clients Work With Me 10+ years of proven experience as a Python Developer Strong expertise in Python Full Stack, Python AI, and Python Web Scraping Ability to scale systems from MVP to enterprise-level platforms Deep understanding of backend architecture and system design Reliable communication and predictable delivery 🚀 Let’s talk about your project - I am available as your Python Developer, Python Full Stack Developer AI React, Python AI Developer, Python Automation Engineer, Python Django Developer, and Python Web Scraping Specialist.
Pavel O. has worked .
Sloboda Studio
Associated with
Sloboda Studio
$1M+
earned
Nikita S.
$25/hr
$4K+ earned
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Hello, Thank you for checking out my profile, here is a quick overview of my skills and strengths. I'm a Full-stack Developer focused in Python, FastAPI, Next.js. Proficient in integrating AI technologies for exceptional outcomes. Committed to delivering high-performance solutions across the entire development spectrum. 𝗛𝗲𝗿𝗲'𝘀 𝗵𝗼𝘄 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂: 🔸 Designing visually stunning and convenient interfaces for websites and mobile apps 🔸 Taking on design tasks at any stage of the development process, from start to finish. 🔸 Improving customer engagement and sales on e-commerce platforms. 🔸 Designing B2B SaaS products user experience-centred. 𝗜𝗳 𝘆𝗼𝘂 𝗵𝗮𝘃𝗲 𝗮𝗻𝘆 𝗾𝘂𝗲𝘀𝘁𝗶𝗼𝗻𝘀, 𝗳𝗲𝗲𝗹 𝗳𝗿𝗲𝗲 𝘁𝗼 𝗰𝗼𝗻𝘁𝗮𝗰𝘁 𝗺𝗲! 𝗟𝗲𝘁'𝘀 𝗹𝗮𝘂𝗻𝗰𝗵 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗶𝗻𝘁𝗼 𝘀𝗽𝗮𝗰𝗲!
$25/hr
98% Job Success
$6K+ earned
Available now
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Full Stack Developer | React Developer | Node.js Developer | Python Developer | AI Integration Specialist I’m a Full-Stack Developer with expertise in React.js, Next.js, Node.js, Express.js, Python, and AI-driven application development. I specialize in building secure, scalable, and high-performance web applications that help startups and enterprises transform ideas into powerful digital products, from MVPs to enterprise-grade SaaS platforms. My experience includes developing modern frontend interfaces, optimized backend architectures, RESTful APIs, and cloud-ready applications using clean code practices and scalable system design. With a strong background in Artificial Intelligence and Machine Learning, I integrate intelligent capabilities into applications, including: * Predictive Analytics * Recommendation Systems * Natural Language → Core Expertise : 1. Custom Web App Development (React, Next.js, Node.js, Django, Flask) 2. API Development & Integration (REST, GraphQL) 3. Database Design & Optimization (MongoDB, PostgreSQL, MySQL) 4. AI & Automation Solutions (OpenAI API, Python scripting, chatbots) 5. Performance Optimization, Code Refactoring, and Security Hardening 6. UI/UX Implementation with responsive, accessible frontends 7. DevOps & Cloud Deployment (AWS, Vercel, Docker, CI/CD) → Services I Offer 1. Full Stack SaaS & Cloud Application Development - End-to-end full stack website development using React.js, Node.js, and Python (Django/Flask) for both frontend and backend. - Scalable cloud architectures with AWS, DigitalOcean, Heroku for reliable performance and growth. - SaaS features: subscription models, dashboards, analytics, and reporting tools built for high-traffic applications. - API-driven architecture: REST & GraphQL APIs for seamless integrations and dynamic data handling. - Performance, security, and maintainability baked in from day one to ensure enterprise-grade quality. 2. UI/UX Design & Prototyping Wireframes, Figma prototypes & responsive UI implementation Mobile-first, SEO-optimized, Core Web Vitals-friendly designs UX decisions backed by data to boost conversions 3. Modern Backend & API Engineering Node.js, Laravel, Django REST APIs, GraphQL Authentication: JWT, OAuth2, Firebase Auth, Auth0 Microservices architecture, caching, real-time syncing 4. Marketplaces & Multi-Vendor Platforms Custom vendor portals, onboarding flows, inventory tools Secure payments (Stripe Connect, PayPal, Apple Pay) Order tracking, real-time alerts, and review systems 5. Payments & Automation Stripe, PayPal, Apple Pay, Braintree integration Subscriptions, invoicing, automated refunds & reporting Webhook-based workflow automation 6. Database Architecture & Optimization Relational (PostgreSQL, MySQL) & NoSQL (MongoDB, Firebase) Scalable schemas, optimized queries, migrations Caching strategies for high-traffic systems (Redis, Memcached) 7. Third-Party & Microservice Integrations CRM (Salesforce, HubSpot), Email (Klaviyo, Mailchimp) ERP, POS, analytics, and payment systems Event-driven architecture & API-first integrations → Tech Stack Expertise 1. Custom Full-Stack Web Application Development – Using React.js, Next.js, Node.js, Django, and Flask to build scalable, high-performance web apps. 2. API Development & Integration – Designing and integrating RESTful APIs, GraphQL APIs, and third-party services for seamless data flow. 3. Database Design & Optimization – Expertise in MongoDB, PostgreSQL, MySQL, ensuring efficient queries, indexing, and scalability. 4. AI & Automation Solutions – Implementing OpenAI API, Python scripting, machine learning, chatbots, and workflow automation for smarter applications. 5. Performance Optimization & Security Hardening – Code refactoring, backend optimization, caching strategies, and robust security best practices. 6. Responsive UI/UX Development – Building accessible, mobile-first, interactive frontends with React.js and modern design principles. 7. DevOps & Cloud Deployment – Deploying applications with AWS, Vercel, Docker, CI/CD pipelines, and containerized cloud infrastructure. 8. Full-Stack SaaS & Enterprise Solutions – Architecting multi-user platforms, dashboards, admin panels, and enterprise-grade software using React + Node + Python. 9. Real-Time Applications – Implementing WebSocket-based features, notifications, chat systems, and live dashboards for dynamic applications. 10. Scalable, Maintainable, Future-Proof Architecture – Designing modular, testable, and high-performance full-stack solutions for long-term business growth. → Let’s Build Something Impactful Let’s talk! I’ll help you ship fast, scale reliably, and build full-stack web applications using React, Node.js, and Python that drive growth and deliver results. 📩 Message me today to turn your idea into a scalable, high-performance, and revenue-ready product.
Matrix Marketers
Associated with
Matrix Marketers
$4M+
earned