At Greenstate AG, I build backend systems in TypeScript, including the Community and Levi9 Internship Blog modules from database architecture through REST APIs and business logic using NestJS and PostgreSQL.
I built an agent-client chat system with WebSocket messaging, DialogflowCX chatbot support, and live human handoff, then extracted it into a reusable package now used by two production services. I've also developed services for a smart plant-growing IoT system, owning device management, user sessions, real-time interactions, and end-to-end domain logic.
I deploy and debug services on AWS, improve legacy finance-platform reliability, optimize GitHub Actions workflows, and incorporate OWASP Top 10 security audits, Semgrep, and ZAP into CI. I also contribute frontend work in React and Next.js, including responsive email templates tested across browsers and legacy Outlook.
