Igor S.

Full-stack technical partner for B2B and SaaS products: idea to production, AI features built in, and one accountable person from the first call to post-launch support. React, Next.js and Node.js on AWS. ▪ Top Rated Plus | 193 completed projects | 144 reviews | 4.9★ average since 2013 ▪ $300K+ earned on Upwork | HIPAA-ready healthcare, B2B platforms and AI products ★★★★★ "I was very satisfied with Igor's work. He understood our requirements very well and translated them into a solid, high-quality app. Communication was always clear and reliable, and the support after launch was excellent. On top of that, Igor is fun to work with." Verified Upwork client, September 2026 ◆ RECENT RESULTS → AI Agent Code Review System: 7-phase multi-agent pipeline for automated code review across backend, frontend and ML repos. Review cycle cut by ~70% (1–2 weeks to ~5 hours), ~95% accuracy catching bugs and security risks. → Multi-Tenant B2B SaaS for Managed FinOps: took the platform from MVP to a production SaaS used by MSPs for AWS cost management (React, Node.js, Python), then led a full UI/UX redesign with expanded functionality. → AI-Powered Data Generation SaaS (OpenAI API): my own product, built from scratch, now in beta. 100+ field types, 3 output formats (CSV, JSON, XLSX), 5 generation modes, from fast fake data to AI-driven synthetic datasets. → Voice and text chatbot (ElevenLabs API): part of the team building an OpenAI-powered platform where users chat with AI personas in text and voice. ◆ WHAT I BUILD → Full-cycle SaaS and B2B product development Architecture, UI/UX, back end, AWS infrastructure and AI integration, built to handle growth from day one so real users don't force a rewrite. → AI features in your product OpenAI, Google Vertex AI and custom ML pipelines: chatbots, smart search, recommendation engines, process automation. AI as a real business feature, not a demo. I also review, test, fix and launch products that founders built with AI tools. → B2B web platforms Marketplaces, client portals, CRMs, LMS and internal tools: systems that connect your users, data and business processes in one place. → Regulated and sensitive projects HIPAA-ready, GDPR-compliant or NDA-protected development. MSA available on request. ◆ WHAT YOU GET ▪ One accountable partner from the first call to post-launch support, so you don't coordinate several freelancers ▪ A scoped proposal with timeline and budget before any code, and AI running costs estimated before launch ▪ A product built to handle growth from day one ▪ Personal data replaced with tokens before a request reaches the AI model, and restored after ▪ A straight answer on whether you need AI at all ▪ Client-endorsed most often for Committed to Quality, Clear Communicator, Collaborative and Reliable ◆ HOW I USE AI AI speeds up execution. Architecture and every key decision stay with me. Every change is reviewed and tested before it ships, and docs are kept in sync with the code. ◆ HOW I WORK → Every project runs through the same process: business analysis and requirements, a scoped proposal with timeline and budget, design in Figma with QA built into every development phase, launch, and post-launch support. You get weekly updates and a partner who treats your product like their own. → For smaller projects I work solo. For larger ones I bring in my full-stack team, collaborating for 5+ years: senior full-stack developers (React, Next.js, Node.js), UI/UX designers, DevOps/AWS engineers, QA engineers, a business analyst and a project manager. → Clients include HIPAA-compliant healthcare platforms, B2B e-commerce systems, enterprise web apps and custom SaaS tools. ◆ STACK Front end: React, Next.js, TypeScript Back end: Node.js, NestJS, Python, Django, PostgreSQL AI: OpenAI API, Google Vertex AI, custom ML pipelines Cloud: AWS ◆ THIS WORKS WELL FOR ▪ A SaaS founder moving from idea or prototype to a production-ready product ▪ A B2B company that needs a custom platform, internal tool or client portal ▪ A product team adding an AI feature (chatbot, smart search, automation) to an existing product ▪ A company that needs HIPAA-ready, GDPR-compliant or NDA-protected development ▪ A founder with a product built with AI tools that needs to be reviewed, tested, fixed and launched live → Ready to talk? Send a short note: what you're building, what you have so far, and the outcome you want. You get a direct reply with first advice. The scoping call and intro estimate are free. ▪ Available for new projects Full-Stack Developer | B2B SaaS | AI Features | HIPAA | React | Next.js | Node.js | AWS Updated: October 26, 2026