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Abdullah A.
$30/hr
100% Job Success
$100K+ earned
Available now
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You’ve found someone who can take ownership of your AI, SaaS or full-stack product from architecture to deployment making the right technical decisions & build system that scale to 𝐦𝐢𝐥𝐥𝐢𝐨𝐧𝐬 𝐢𝐧 𝐫𝐞𝐯𝐞𝐧𝐮𝐞. 👉 Hit "Invite to Job” - discuss your solution 🎖 Top 3% on Upwork · 100% Job Success 💼 Magisch Maastricht Vrijthof · Netherlands · €30M+ revenue My work sits between AI engineering and full-stack product development. That means you get the AI layer, backend logic, frontend experience, database structure, integrations, and deployment — not just a quick demo that breaks when real users start using it. ───────────────────────────────────── 𝐖𝐡𝐚𝐭 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐒𝐚𝐲: ───────────────────────────────────── ➞ Abdullah was excellent to work with as an AI Engineer. He played a key role in building our AI-powered SaaS platform. Highly recommended for SaaS, automation, full-stack, and AI projects. ➞ He delivered excellent SAAS development and has been proactive all the way, sharing new ideas and solutions to elevate the value of the project. ➞ Working with Abdullah was an absolute pleasure! He developed a fantastic full-stack application for us, integrating an AI chatbot that exceeded our expectations. ───────────────────────────────────── 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐮𝐢𝐥𝐝: ───────────────────────────────────── 𝐀𝐈 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬 -- AI chatbots, assistants, RAG systems, AI agents -- OpenAI, LLMs, NLP, ML, Python, automation 𝐒𝐚𝐚𝐒 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 -- SaaS MVPs, multi-tenant apps, dashboards -- Subscriptions, payments, user roles, admin panels 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐀𝐩𝐩𝐬 -- React, Next.js, Node.js, NestJS, Python -- APIs, databases, WebSockets, real-time workflows 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 -- CRMs, webhooks, Google APIs, Slack, third-party tools -- Workflow automation, data processing, API integrations 𝐃𝐞𝐬𝐤𝐭𝐨𝐩 𝐀𝐩𝐩𝐬 -- Electron apps for Windows, macOS, and Linux -- Offline-first workflows, POS systems, business tools ───────────────────────────────────── 𝐁𝐢𝐠𝐠𝐞𝐬𝐭 𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬: ───────────────────────────────────── ➞ Multi-Tenant POS SaaS — Deployed across 100+ locations, processed millions of transactions, contributing to $30M+ revenue. ➞ Advertising AI SaaS Platform — Built with Python, React & Node.js for 1,000+ advertisers, generating 50K+ bookings, increasing vendor growth by 40%. ➞ Education AI SaaS Platform — Python, React & Node.js serving 120+ institutions and 10K+ users with scalable backend systems and intelligent data processing, automation workflows, and AI-ready architecture. ───────────────────────────────────── 𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤: ───────────────────────────────────── 𝐀𝐈, 𝐌𝐋 & 𝐏𝐲𝐭𝐡𝐨𝐧 -- Python, Machine Learning, Data Science, NLP, OpenAI, LLMs, RAG, AI Agents, AI Chatbots, AI Assistants, AI Automation, vector databases, embeddings, prompt engineering, API-based AI systems, intelligent data processing 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 -- React.js, Next.js, JavaScript, TypeScript, Redux, Tailwind CSS, Material UI, responsive UI, dashboards, admin panels, customer portals 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 -- Node.js, Express.js, NestJS, REST APIs, GraphQL, Python APIs, authentication, authorization, business logic, real-time workflows, scalable backend architecture 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 -- PostgreSQL, MongoDB, Redis, Firebase, Supabase, database design, query optimization, multi-tenant data structure 𝐃𝐞𝐬𝐤𝐭𝐨𝐩 -- Electron, cross-platform apps, iOS apps, Android apps, desktop applications, offline-first workflows 𝐒𝐚𝐚𝐒, 𝐏𝐚𝐲𝐦𝐞𝐧𝐭𝐬 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 -- Stripe, PayPal, subscriptions, webhooks, Twilio, WebSockets, OAuth, CRMs, Google APIs, Slack, automation tools, third-party API integrations 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 -- AWS, Docker, CI/CD, deployment, cloud infrastructure, performance optimization, monitoring, scalable production setup If you need an AI product, SaaS platform, web app, chatbot, RAG assistant, automation workflow, dashboard, or existing system improved, send me a message and I’ll help you figure out the best way to build it. Keywords to find me: Full-Stack Development, SaaS Development, AI Development, React, Node.js, Python, AI Chatbot, Large Language Model, Generative AI, AI App Development, AI Agent Development, AI Model Integration, API Integration, Web Application Development, Next.js, NestJS, TypeScript, JavaScript, Machine Learning, Electron
Abdullah A. has worked .
BoolMind LLC
Associated with
BoolMind LLC
$90K+
earned
Roy V.
$65/hr
100% Job Success
$2M+ earned
Available now
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$100M+ in Client Revenue | Expert-Vetted (Top 1% Upwork) | 240+ Projects | 100% Job Success | 10+ Years on Upwork I’m a Full Stack Developer, SaaS Developer and Backend Developer focused on building production-ready software that holds up under real-world usage. My work sits at the intersection of software developer, web developer, and SaaS platform builder, with a strong backend-first mindset and deep attention to scalability, performance, and long-term maintainability. As a Full Stack Developer, I take ownership of systems end-to-end, pairing robust backend architecture with clean, modern interfaces. My frontend work is typically React-based and I often collaborate with or replace traditional React developer or web developer setups by owning both frontend and backend in a single, coherent system. While I’ve previously worked as a WordPress developer and integrated WordPress-based sites into custom platforms, my current focus is on custom SaaS and API-driven systems rather than CMS-centric builds. As a SaaS Developer, I help companies design, build and scale SaaS products, internal tools and API-driven web applications intended for long-term use. My experience as both a Backend Developer and software developer allows me to think beyond features and focus on architecture, reliability and operational stability from day one. Many of the platforms I build support internal teams, customer dashboards and multi-role workflows where permissions, data integrity and business rules are critical. In my day-to-day work as a Backend Developer, I design and implement backend services, APIs and data models that power SaaS platforms, complex web applications and mobile-connected systems. I regularly work with Node.js and Python, drawing on my background as a Python developer to build scalable services, background jobs and asynchronous workflows that perform reliably in production. As a Full Stack Developer, I ensure these backend systems integrate cleanly with frontend applications, mobile extensions and third-party APIs. When required, I support frontend and mobile app developer workflows using React and React Native. This end-to-end ownership is a key reason clients bring me in as a Full Stack Developer rather than splitting work across multiple roles. A significant portion of my work as a SaaS Developer and Backend Developer involves building internal platforms, dashboards and API-first systems that integrate external services. In these projects, I often collaborate closely with product, growth, or analytics teams, including teams focused on SaaS marketing by designing clean data pipelines, event tracking and backend logic that supports experimentation, reporting and lifecycle insights. When projects require AI-powered functionality, I bring hands-on experience integrating AI into backend systems. While my primary role remains Full Stack Developer and Backend Developer, I regularly implement AI-enabled workflows, data processing pipelines and LLM-driven features inside SaaS platforms. This allows me, as a SaaS Developer, to deliver AI functionality that is reliable, observable and cost-controlled rather than experimental. Clients typically work with me when they need: - a Full Stack Developer who can own frontend and backend - a SaaS Developer who understands long-term scalability constraints - a Backend Developer experienced with real production systems - mobile app developer and React developer experience as a software developer - backend services built with Node.js or Python by an experienced Python developer - web applications with complex workflows and business rules from a senior web developer - API-driven architectures and third-party integrations - SaaS platforms designed to support growth, analytics and SaaS marketing data needs - MVPs that can realistically evolve into long-term SaaS products A large part of my work as a Full Stack Developer, SaaS Developer and Backend Developer focuses on: - multi-role dashboards and internal tools - authentication, authorization and permissions - API-first backend system design - integrations with external platforms, including legacy CMS or WordPress-based systems when required My core work as a Backend Developer and Full Stack Developer covers: - backend services built with Node.js and Python - APIs, background jobs and integrations - databases such as PostgreSQL - modern stacks using tools like Supabase - AI-enabled backend features where they add real business value I regularly work on MVP builds and early-stage products as a SaaS Developer, with strong focus on solid backend foundations, sensible scaling paths and avoiding short-lived prototypes. Based on scope and timing, I work hands-on as a Full Stack Developer, SaaS Developer and Backend Developer and when useful, involve specialists from my team. Long-term results come from clarity and intentional system design. I focus on delivering software that teams can confidently run, maintain and scale.
Roy V. has worked .
Interactivated Solutions - Top Rated Plus Agency
Associated with
Interactivated Solutions - Top Rated Plus Agency
$3M+
earned
$20/hr
100% Job Success
$8K+ earned
Available now
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I help startups and businesses build scalable backend systems, AI-powered products, SaaS platforms, and custom APIs using Python, Django, and FastAPI. Over the past few years, I’ve worked on AI agents, RAG-based chat systems, workflow automation, cloud deployments, internal business tools, database migrations, and high-performance backend architectures for startups and growing companies. My experience includes: • AI Agents & AI-powered applications • Backend architecture & API development • Django, FastAPI, Flask & Python • SaaS platforms & MVP development • PostgreSQL, MySQL & database optimization • AWS, Docker & deployment workflows • Automation systems & third-party integrations • Code optimization, debugging & refactoring I focus on writing clean, scalable, and production-ready backend code with strong attention to performance, maintainability, and long-term scalability. Whether you need to build a backend from scratch, improve an existing SaaS product, develop AI-powered workflows, or optimize APIs and infrastructure, I can help deliver reliable solutions that scale. Let’s build something great together.
Faiz U. has worked .
Bilal M.
$40/hr
100% Job Success
$20K+ earned
Available now
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Full stack developer building React, Next.js, Node, and Python apps for startups. I help founders ship SaaS products, AI tools, and chatbots that actually work in production. With 10+ years of full stack experience, I blend frontend precision (React, Next.js, TypeScript) with backend intelligence (Python, Node.js, FastAPI, Django, Supabase, OpenAI APIs) to deliver powerful web apps, SaaS platforms, and AI solutions. I've worked on everything from AI driven analytics platforms and LLM powered chatbots to B2B SaaS dashboards and full stack MVPs. You get code that's clean, tested, and deployed. Not just working, but built to scale. Core Expertise ▸ Frontend: React, Next.js, TypeScript, Tailwind, JavaScript ▸ Backend: Python, Node.js, FastAPI, Django, Express ▸ Databases: Supabase, PostgreSQL, MongoDB ▸ AI and LLM: OpenAI, ChatGPT, LangChain, RAG, Vector Databases (Pinecone) ▸ Cloud and DevOps: AWS, Docker, Vercel ▸ Integrations: REST APIs, Stripe, Webhooks, Automation What I Build ▸ Full stack web apps with React, Next.js, Node, Python, FastAPI, and Django ▸ AI features and chatbots using OpenAI, ChatGPT, LangChain, RAG, and Pinecone ▸ SaaS MVPs in 4 to 8 weeks with Next.js, FastAPI, Supabase, and Stripe ▸ REST APIs, integrations, and database design with PostgreSQL and MongoDB Why Founders Work With Me ▸ End to end ownership from scoping to deployment ▸ Clean, maintainable code your future team can actually grow with ▸ 10+ years of full stack experience across SaaS, AI, and B2B platforms Send a message with what you're building and a rough budget. I'll reply within a few hours.
Bilal M. has worked .
Andrey P.
$40/hr
100% Job Success
$700K+ earned
Available now
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👋 Looking for a powerhouse full-stack engineer who can bridge Python-based AI innovation with Java-backed enterprise performance? I bring 25+ years of professional full stack software development experience-combining backend architecture, enterprise Java systems, AI/ML engineering, and modern frontend frameworks into scalable, data-rich applications for finance, healthcare, retail, manufacturing, and government sectors. With over 100 full-stack systems delivered, I've built mission-critical platforms and real-time analytics engines handling millions of events per day, while reducing operational costs by up to 65% through infrastructure optimization. 🏆 Why Work With Me? ✔️ 25+ years of enterprise-grade software development ✔️ 40+ Python projects using AI/ML for analytics, automation, and computer vision ✔️ 60+ Java systems modernized to Spring Boot, AWS & microservices ✔️ Built backend systems serving 10M+ users monthly ✔️ AI-based fraud detection systems with 98%+ accuracy ✔️ Scaled apps to handle 1M+ real-time events/second using Kafka, EventBridge, and Spark ✔️ Healthcare-grade imaging tools for tumor classification (TensorFlow + OpenCV) ✔️ 50+ legacy migrations from J2EE/Struts to microservices ✔️ Deployed full-stack apps across 20+ industries, including fintech, eCommerce, telecom, and eLearning ✔️ CI/CD pipelines & Dockerized monorepos for faster dev cycles and better team velocity 🧠 Tech Stack & Core Skills 🖥️ Languages: Python, Java, TypeScript, JavaScript, HTML5, CSS3, SQL, Shell Scripting 🧠 Python AI/ML & Automation: TensorFlow, PyTorch, OpenCV, Scikit-learn, NumPy, Pandas, Matplotlib AI Workflows | Computer Vision | Predictive Analytics | Data Pipelines | Image Recognition | Fraud Detection Automation using Python + Selenium, BeautifulSoup, Scrapy ☕ Java Enterprise Stack: Spring Boot, Spring Cloud, Hibernate, Akka, Play, Grails Java Microservices | RESTful APIs | SOAP | JMS | JPA | Quartz | Lombok Legacy Refactoring | J2EE → Spring Boot | Tomcat | WildFly | WebLogic 📊 Frontend (Full-stack Scope): Angular.js, Vue.js, React.js, Next.js, Svelte Tailwind, Bootstrap, Material-UI | JSP | Thymeleaf | JSF | EJS SPA Development | SSR/ISR | Responsive UI | Webpack, Vite, Gulp 📦 DevOps & Cloud: Docker, Kubernetes, AWS (Lambda, SageMaker, EC2, S3, Kinesis, RDS), GCP, Azure CI/CD: Jenkins, GitLab CI, Travis, Ansible, Terraform Infrastructure as Code | Monitoring | Cost Optimization 📚 Data & Databases: PostgreSQL, MySQL, Oracle, MSSQL, SQLite, MongoDB, Cassandra, Dynamo DB Elasticsearch, Redis, Kafka, RabbitMQ, GraphQL, REST APIs 📌 Python & AI-Focused Solutions 🔹 AI-Based Automation for Workflow Optimization 🔹 Real-Time Object Recognition & Computer Vision Systems 🔹 Predictive Analytics for Retail, Logistics, and Healthcare 🔹 NLP Chatbots and Intelligent Assistants 🔹 Data Crawlers & Scrapers for eCommerce & SEO 🔹 Data Normalization Pipelines Handling 1TB+ Datasets 📌 Java & Enterprise Software Development 🔹 Full-stack Java + Angular/Vue platforms 🔹 Spring Boot Microservices for Finance, Healthcare, SaaS 🔹 Event-Driven Architectures with Kafka & Redis 🔹 Secure Auth (JWT, OAuth2, LDAP, SSO, 2FA) 🔹 Migrating Monoliths to Microservices (Cloud-Native Refactors) 🔹 Server-Side Java with JSP, JSF, and Servlet APIs 📌 Full-stack Projects Built from Scratch 🔹 Inventory Management System (Java + Vue + AWS) 🔹 Medical Diagnosis Dashboard (Python + Django + React) 🔹 Financial Fraud Detection Engine (PyTorch + Kafka) 🔹 Real Estate Listing Platform (Flask + Angular + PostgreSQL) 🔹 ERP Extensions for Manufacturing (Spring Boot + Thymeleaf) 💬 Results That Matter ✅ Built an AI-based inventory forecasting engine reducing stock outs by 42% ✅ Scaled a Java backend to handle 5M+ daily requests for a logistics app ✅ Migrated 3 legacy apps to AWS with 65% infra cost reduction ✅ Automated scraping workflows gathering 10M+ data points weekly ✅ Designed OCR pipeline (Python + Tesseract) for medical record digitization ✅ Delivered HIPAA-compliant image analysis tools with 95%+ detection accuracy ✅ Cut fraud risk 75% for fintech app using real-time anomaly detection 💼 Industries Served 🏥 Healthcare & Diagnostics 💳 Fintech & Insurance 🛍️ eCommerce & Dropshipping 🏗️ Manufacturing & Supply Chain 📚 EdTech & LMS Platforms 🛰️ Gov & Aerospace (including secure environments) 🏢 Enterprise SaaS & Internal Tools Let’s build the next enterprise success story together. 💬 Message me to discuss your backend, AI/ML, or full-stack project! 🧩 Let’s Build Something Powerful If you’re seeking a seasoned backend + full-stack expert who can turn complex business logic into reliable, scalable, and secure digital solutions - I’m your guy.
Ixobit Corporation (DBA Sibers)
Associated with
Ixobit Corporation (DBA Sibers)
$20M+
earned
Avinash V.
$19/hr
100% Job Success
Available now
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I’m a 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 & 𝐂𝐌𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 helping businesses build powerful, high-converting websites across PHP, Python, Node.js, CMS i.e 𝐖𝐨𝐫𝐝𝐏𝐫𝐞𝐬𝐬, 𝐒𝐡𝐨𝐩𝐢𝐟𝐲, 𝐏𝐫𝐞𝐬𝐭𝐚𝐒𝐡𝐨𝐩, 𝐊𝐚𝐣𝐚𝐛𝐢, 𝐚𝐧𝐝 𝐖𝐞𝐛𝐟𝐥𝐨𝐰. I specialized in building scalable, fast, and conversion-focused platforms for businesses in high-growth niches. 🔥 Core Expertise CRM Integration & Set up i.e MethodCRM, QUICKBOOKS, SALESFORCE, HubSpot, ZOHO. PHP & Frameworks i.e Laravel, CodeIgniter, Yii, Smarty, Symfony. Python, Flask, FastAPIs, Web Scrappers by using Pandas, BeautifulSoup, Scrapy. JavaScript & Frameworks i.e Node.js, React.js, Next.js, Express.js. Databases i.e MySQL, MSSQL, POSTGRES, MongoDB, SupaBase. Hosting Server i.e WPEngine, AWS, Hostinger, Google Cloud, Godaddy, NameCheap, InteraServer, VPS and much more. PHP CMS and OpenSource CMS:- ✔ WordPress Development (Custom Themes, WooCommerce, Elementor) ✔ Shopify & BigCommerce Store Development ✔ PrestaShop Customization & Module Development ✔ Kajabi Course & Funnel Setup ✔ Webflow Design & CMS Development ✔ eCommerce Store Optimization & CRO ✔ Speed Optimization & Core Web Vitals ✔ Custom API Integrations ✔ Payment Gateway & Third-Party Integrations ✔ Website Migration & Redesign 🧩 Specialized Niches ✔ Fashion & Apparel Brands ✔ Fitness & Gym Websites ✔ Beauty & Skincare Brands ✔ Gift Shops & Personalized Product Stores ✔ Dropshipping Stores (General & Niche) ✔ Furniture & Home Decor Stores ✔ Electronics & Gadget Stores ✔ Pet Brands & Pet Product Stores ✔ Jewelry & Luxury Product Stores ✔ Preschool, School & Education Websites ✔ Digital Products & Online Course Platforms ✔ SaaS & Startup Websites ✔ Health & Wellness Brands ✔ Real Estate & Property Websites ✔ B2B & Wholesale eCommerce Stores 🎯 What You Can Expect • Clean, scalable, and secure development • Conversion-focused layouts • Mobile-first responsive design • SEO-friendly structure • Long-term technical support Whether you're launching a new brand, scaling an online store, or optimizing a digital platform, I build websites that look premium and perform at a high level. Let’s build a Product, Online Marketplace, AI Software that grows with your business. 🚀
Avinash V. has worked .
Ishani S.
$20/hr
100% Job Success
$200K+ earned
Available now
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🚀 I build AI features and SaaS MVPs that ship on time. React and Next.js up front. Python, Node.js APIs on AWS. RAG with OpenAI and LangChain for answers grounded in your data. I'm Ishani Sharma, a senior full-stack engineer having 10+ years of professional experience. I take a product slice from design to production. TypeScript across the app. Clean UI. Fast API. Clear docs. You get maintainable code and a release you can put in front of users fast. For AI, I build retrieval pipelines with vector databases. I write prompt flows that stay stable. I add agent style automations for repeatable tasks. On the backend, I ship well structured Node.js services. I model data in PostgreSQL or MongoDB. I add authentication and authorization. I document each endpoint. Performance tuning where it matters. On AWS, I containerize with Docker. Kubernetes when orchestration helps. CI/CD so releases are predictable. That lowers release risk and keeps feedback loops tight. What I can help with: - AI features using OpenAI and LangChain with RAG grounded in your data - Next.js apps in TypeScript with responsive UI - REST APIs in Node.js on AWS. Auth included. Rate limits and logging wired - Data models in PostgreSQL or MongoDB with safe migrations and indexes - Vector database setup for chunking and embeddings. Fast retrieval - Docker and Kubernetes deployment. CI/CD that fits your release flow How I work: - Quick discovery. Scope and milestones within 48 hours, with estimates you can act on - Prototype or API spec within 48 to 72 hours - Weekly demos. Jira board stays current. You see progress daily - Clean Git history. Small PRs. Comments where it saves you time - Careful handover. README and runbooks. Short Looms if helpful I work IST hours with reliable overlap for US and EU teams. Fixed price or milestone based, whichever fits. If you want a grounded AI feature or a SaaS foundation that handles growth, let's scope it and ship the first usable release fast.
Ishani S. has worked .
Volodymyr S.
$60/hr
100% Job Success
$400K+ earned
Available now
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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
Arsene O.
$25/hr
100% Job Success
$80K+ earned
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⚙️ Building Scalable Digital Products with React, Node.js & Python ⚙️ 📅 6+ years of experience 📦 40+ completed projects 💰 $9M+ generated for clients 🌍 Platforms with 80,000+ active users I’m a Full Stack Developer and Full Stack React Developer with 6+ years of experience building scalable web applications. As a React Developer, React.js Developer, and Next.js Developer, I deliver modern frontend systems combined with powerful backend architectures. My backend expertise spans Node.js, Python, Django, and FastAPI, allowing me to build both high-performance APIs and enterprise-grade systems. I work as a Node.js Developer, Python Developer, Django Developer, and FastAPI Developer, depending on project requirements. As a Full Stack Developer, I frequently combine React.js, Node.js, Python, Django, and FastAPI to deliver complete end-to-end solutions. 🚀 Full Stack React, Node.js & Python Engineering I work as a Full Stack Developer, Full Stack React Developer, and React Node.js Developer, building scalable applications with React.js, Next.js (Nextjs), and robust backend systems powered by Node.js, Python, Django, and FastAPI. I use Node.js daily for backend services, APIs, and real-time systems. As a Node.js Developer, I build scalable microservices and backend logic that integrate seamlessly with frontend applications. Alongside Node.js, I use Python, Django, and FastAPI for more complex backend architectures. Django is ideal for structured systems, while FastAPI is perfect for high-performance asynchronous APIs. My experience includes combining Node.js, Python, Django, and FastAPI in production environments where performance and scalability are critical. As a Full Stack Developer and Node.js Developer, I focus on: ⚙️ Improving performance (LCP/TTI) by 2–3x 📊 Increasing conversions by 25–35% 🚀 Scaling apps to 100K+ users 🧠 Backend Development with Node.js, Python, Django & FastAPI As a Node.js Developer, Python Developer, Django Developer, and FastAPI Developer, I build APIs, backend systems, and scalable services. I use Node.js for real-time systems, event-driven architectures, and high-performance APIs. I also use Python, Django, and FastAPI to build structured backend platforms and high-speed microservices. In multiple projects, I combined Node.js with Python, Django, and FastAPI to create hybrid backend ecosystems. 🗄 Databases & Backend Architecture As a Full Stack Developer and Node.js Developer, I work with SQL, PostgreSQL, MySQL, and MongoDB to design scalable systems. I frequently integrate Node.js with PostgreSQL and MongoDB, and also use Python, Django, and FastAPI with relational databases for enterprise applications. I also use Supabase (PostgreSQL-based backend) alongside Node.js, Python, Django, and FastAPI. 🧠 Built systems using Node.js, Python, Django, and FastAPI 🔄 Designed APIs with Node.js and FastAPI 💸 Reduced backend costs with optimized Node.js services 🚀 Improved system performance using Node.js and Python 🎨 Frontend React & Next.js With 6+ years as a React Developer, React.js Developer, and Frontend React Developer, I build fast UI systems using React.js and Next.js (Nextjs). As a Full Stack Developer, I connect frontend applications with backend systems powered by Node.js, Python, Django, and FastAPI. 📱 React Native & Cross-Platform Apps As a React Native Developer, alongside my work as a Full Stack Developer and Node.js Developer, I build mobile applications connected to backend systems powered by Node.js, Python, Django, and FastAPI. 📱 10+ apps delivered 👥 100K+ users supported 💳 SaaS, Payments & Scalable Platforms Most backend logic in these systems is built with Node.js, while complex services often use Python, Django, and FastAPI. ⚙️ Additional Expertise 40+ projects as a Full Stack Developer and Full Stack React Developer Strong experience as a Node.js Developer, Python Developer, Django Developer, and FastAPI Developer Deep expertise in Node.js, Python, Django, and FastAPI backend systems Strong frontend skills with React.js and Next.js Experience with MongoDB, SQL, PostgreSQL, and MySQL Experience with Supabase and real-time systems AI integrations (OpenAI, ChatGPT) using Node.js and Python Built dashboards, PWAs, and SaaS platforms using Node.js, Django, and FastAPI 🤝 Why Work With Me Strong Full Stack Developer with deep backend expertise in Node.js, Python, Django, and FastAPI Experienced React Developer and Full Stack React Developer Skilled in building scalable backend systems using Node.js and Python Strong architecture thinking across frontend and backend If you’re looking for a Full Stack Developer, Node.js Developer, Python Developer, Django Developer, or FastAPI Developer with strong experience in React.js and Next.js — let’s connect. 👉 Click "Invite" or "Hire" and tell me about your project.
Arsene O. has worked .
Golden Team Soft
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Golden Team Soft
$6M+
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Rahul B.
$15/hr
100% Job Success
Available now
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Startups and businesses hire me when they need a Python and AI developer who delivers production-ready systems, not just working code on localhost. Top-rated Python and AI developer with 7+ years across healthcare, SaaS, fintech, ERP, CRM, e-commerce, MVP, travel, and intelligent automation. I have built and shipped products that are live and running, not just prototypes. In 7 years of production work: ========================== → Architected an AI clinical documentation platform for dental practices with multi-tenant schema isolation per clinic, spaCy NLP for intelligent note generation from dictation, OTP-based login, password-protected PDF generation, and automated email delivery via SMTP. → Built a natural language ordering engine with 93% entity extraction accuracy, a deterministic 5-step conversation state machine, real-time Korean NLP fuzzy matching with automatic typo correction, and dynamic product configuration loading of 500+ products from Excel at runtime via FastAPI. → Developed a vacation rental compliance platform with automated document submission to the Spanish Ministry of Tourism, Stripe Connect subscription billing, Celery and Redis background automation, OCR document verification, and 5-tier role-based access control using Django 5.2. → Engineered a digital game key marketplace with async FastAPI, SQLAlchemy 2.0, Redis session handling, Stripe webhook-driven order fulfillment, intelligent retry logic for license delivery, and APScheduler-based catalog synchronization with G2A. → Delivered a complete travel booking ecosystem with live flight, hotel, and tour package API integrations, carbon emission calculators, real-time analytics dashboards, and graph-based data visualization. → Built payroll and HR automation systems with attendance-driven salary calculations, automated PDF and PPT generation, GPS-based field team tracking, and scheduled employee notification workflows. My stack covers the full product: =========================== → AI & LLM: OpenAI API · LangChain · LlamaIndex · RAG · AI Agents · Vector Databases · spaCy · Deepgram · Prompt Engineering → Backend: Python · Django · FastAPI · Flask · Celery · Redis · SQLAlchemy · REST API · WebSockets · JWT · OAuth 2.0 · Multi-Tenant Architecture · Docker · Nginx → Frontend: React.js · Next.js · TypeScript · Redux · Tailwind CSS · Vite → Mobile: React Native · Flutter → Database & Cloud: PostgreSQL · MySQL · MongoDB · Redis · AWS · Cloudinary → Payments & Integrations: Stripe · Razorpay · SendGrid · Webhook Systems · Government Compliance APIs · G2A API Daily updates, clean, documented code, clear scope before start, production-ready delivery. No surprises, no disappearing mid-project. Send me your project details, and I will respond within a few hours. Thank you
Rahul B. has worked .