Karapet P.

Python React Full Stack Developer | Web App Developer | SaaS Developer

15+ Years Experience • 35,100+ Verified Upwork Hours • 120+ Completed Projects • $1M+ Earned • Top Rated Plus • 100% Job Success I'm a Python React Full Stack Developer helping startups, founders, and established businesses build SaaS platforms, AI applications, marketplaces, enterprise software, and custom web applications from MVP to production. Why clients hire me Python React Full Stack Developer → 35,100+ verified Upwork hours Python Full Stack Developer → 120+ successfully completed Upwork projects Web Application Developer → 85+ SaaS products, MVPs, marketplaces, dashboards, and enterprise platforms delivered SaaS Developer → 40+ successful product launches AI Developer → 24+ AI-powered platforms and automation projects Full Stack Development → 15+ years of commercial software engineering API Integration → 300+ third-party integrations completed React Developer → 50+ production web applications Python Developer → 50+ backend systems built and maintained Django Developer → 45+ scalable SaaS applications Business Results Helped clients raise $3M+ in investment after product launches. Built products that later achieved 3 acquisitions. Developed platforms serving 500K+ users. Built business software used by 1,000+ companies and organizations. Automated workflows saving clients 3000+ hours of manual work. Reduced infrastructure and operational costs by over $800.000. Improved application performance by an average of 40%. Increased platform scalability to support 10MM+ daily users. Integrated 300+ APIs, including OpenAI, Stripe, PayPal, Twilio, Shopify, Salesforce, HubSpot, Google, and many others. Delivered 40+ long-term software modernization projects. Selected Product Experience DogVacay → Contributed from the earliest product stages through its acquisition by Rover. CompTool → Built from scratch. Now serving 1,000+ business customers. FairyGodBoss → Developed the core platform through early growth and Series A. ReviewRamp → Helped build the platform from day one through acquisition. Technical Expertise Backend Python, Django, FastAPI, Flask, Node.js, Express.js, NestJS, REST API, GraphQL, API Integration, WebSockets, Authentication, OAuth, JWT, Microservices, Workflow Automation, PostgreSQL, MySQL, MongoDB, Redis. Frontend React, Next.js, TypeScript, JavaScript, Vue.js, Angular, HTML5, CSS3, Tailwind CSS, Responsive Design, SPA, SSR. AI Development OpenAI, GPT, AI Integration, AI Agent Development, LLM Applications, RAG, Vector Databases, Workflow Automation, Intelligent Search. Cloud & Infrastructure Amazon Web Services (AWS), Docker, Kubernetes, CI/CD, GitHub Actions, GitLab CI, Cloud Infrastructure, Production Deployments. Industries Artificial Intelligence, Healthcare, HR & Compensation, Legal Tech, Marketing Technology, Data Engineering, Property Management, Marketplace Platforms, Cybersecurity, Workforce Management. If you're looking for a Python React Full Stack Developer, Python Full Stack Developer, Web Application Developer, or SaaS Developer to build, modernize, or scale your next product, I'd be happy to discuss your project. Profile updated on 08 Sep 2026