Panagiotis Panagi

10 years building production React applications across startups and enterprises. → Led development of Starburst UI — enterprise React component library → Built high-conversion apps generating $600K+ revenue (Wander) → Expert-Vetted on Upwork (top 1%) for React/frontend → Deep expertise: hooks, performance optimization, testing, state management, component architecture I help with: debugging, architecture decisions, performance issues, testing strategies, refactoring legacy code, and best practices.

8 years using TypeScript in production for frontend and full-stack applications. → Architected type-safe React component libraries used across enterprise products → Built complex type systems for API integrations (Stripe, DoorDash, Twilio) → Expertise in generics, utility types, strict mode, and advanced patterns I help with: type errors, migrating JS to TS, designing type-safe APIs, fixing "any" hell, generics confusion, and making TypeScript work for you instead of against you.

Built production LLM agent systems for enterprise software development. → Architected dual-agent test generation system (Explorer + Translator agents) that converts natural language to Playwright tests → Built Refract — semantic code analysis system for AI-assisted code generation → Developed MCP servers connecting AI assistants to internal tools → Experience with OpenAI, Claude, prompt engineering, and agent orchestration I help with: designing agent architectures, prompt engineering, integrating LLMs into apps, debugging AI outputs, and building reliable AI-powered features.