Kapil G.

Top Rated Plus | 100% Job Success | 15,000+ hours on Upwork

I'm a senior full-stack engineer with 15+ years of experience. For the last few years, my work has focused on AI SaaS products: multi-tenant platforms, RAG systems with cited answers, and LLM-powered workflows that run in production, not just in demos.

I work best with founders and teams who need one senior engineer to own the whole thing: architecture, backend, frontend, AI integration, cloud deployment, and clear communication along the way.

RECENT WORK

• Whitelabel DISC: multi-tenant assessment SaaS (React, Node.js, MongoDB, AWS). I've built it across 13 phases, including white-label tenant custom domains (CloudFront SaaS Manager, ACM), role-based admin and manager dashboards, and multi-language support.

• Adept EPR AI: AI compliance SaaS for packaging EPR regulations. As part-time Director of Engineering, I lead architecture and delivery on GCP with LLM document pipelines and Botpress.

• DecoverAI: legal intelligence platform with document ingestion, retrieval-augmented generation, and source-cited answers for legal research.

• Vective: AI-powered autonomous workforce and cybersecurity platform.

WHAT I BUILD

• AI SaaS platforms: RAG pipelines, AI agents, document intelligence, chat and workflow automation using Claude, OpenAI, Gemini, LangChain and LangGraph
• Multi-tenant SaaS: tenant isolation, granular permissions, secure file handling, billing, custom domains
• Full-stack web apps: .NET Core / C#, Node.js, React, Angular, Next.js, TypeScript
• Cloud and DevOps: AWS, Azure, GCP, Docker, CI/CD, monitoring
• Legacy .NET modernization: moving older ASP.NET systems to modern, maintainable architecture

HOW I WORK

• I start by understanding the business problem, not just the ticket
• AI features ship with a human-review step first, and get automated further only once accuracy is proven
• Security and testing are part of every milestone, not left to the end
• You get regular demos, written progress updates, and code in your own repositories
• I'll tell you when something you've asked for isn't the right solution, and suggest what is