Emmanuel E.

I’m a senior full-stack engineer with 6+ years of experience building, scaling, and stabilizing production SaaS applications. I have strong experience using technologies including React, Next.js, TypeScript, Node.js/NestJS, Rust, PostgreSQL, Supabase, AWS, and modern AI integrations. A lot of my work has involved products with complex backend requirements, including multi-tenant systems, payments, external integrations, background processing, concurrency, and production reliability. I’m comfortable with being involved in planning and building products from the ground up, and taking ownership of existing systems that need to be understood, stabilized, and built upon without introducing unnecessary complexities. In addition to my extensive TypeScript experience, I have deep experience with async Rust, building performance-sensitive backend services, WebAssembly, and Tauri-based desktop applications. I have also spent significant time building AI features into production products using OpenAI, Anthropic, and LangChain. That includes workflows like generating structured content, document data extraction, producing AI-driven insights, and using application data or external APIs to give the model the necessary context. More broadly, the areas I work in regularly include the following: - React, Next.js, TypeScript, Node.js, NestJS - Rust, Tokio, async/concurrent systems, Tauri, WebAssembly - PostgreSQL, Supabase, RLS, multi-tenant SaaS architecture - OpenAI, Anthropic, LangChain, AI-powered product workflows - REST and GraphQL APIs, webhooks, OAuth, and third-party integrations - Stripe and Square payments, subscriptions, refunds, and webhooks - AWS Lambda, DynamoDB, S3, Vercel, Docker, GCP, and serverless systems - Redis, queues, background jobs, and real-time applications - Performance optimization, production debugging, and system stabilization - AI-assisted development with Claude, Cursor, and Codex I work well with founders and small product teams where I’m expected to understand the business problem, communicate trade-offs clearly, make sound technical decisions independently, and take ownership from architecture through deployment. If you need a highly available engineer who can get into your product, understand how the pieces fit together, and reliably move it forward, I’d be glad to help.