Senior Backend Engineer focused on AI/RAG integrations, multi-tenant systems, and cloud-native services.

I build backend systems in Go, TypeScript, and Python, with an emphasis on clear service boundaries, observability, security, and maintainable APIs. I am open to Senior Backend Engineer opportunities in Germany and relocation through the EU Blue Card route.

A single-binary Go scanner that detects cross-tenant data leaks in RAG and agent systems before deployment. It supports canary, citation, PII, secret, and experimental paired-counterfactual checks, with JSON/JUnit/HTML reports and a GitHub Action.

Repository · Vulnerable report · Isolated report

A working strategy-research beta that turns a natural-language request into structured trading rules, runs a historical backtest, and stores the result for later analysis. The deployed system combines Next.js, NestJS, Python, MongoDB, and containerized services.

A NestJS service for synchronizing real-time and historical cryptocurrency market data from multiple exchanges into PostgreSQL, with scheduled backfilling and documented APIs.

A full-stack support platform with an embeddable chat widget, WebSocket messaging, a NestJS API, a Next.js dashboard, and MongoDB persistence.

Merged:

• TiDB: return a proper error for LOAD DATA with an AUTO_RANDOM column
• Grafana: clear the Elasticsearch code-editor query when switching query types
• Dify: correct the API Extension documentation link

In review:

• Apache Superset: export dashboards containing charts from multiple databases
• VS Code: handle kebab-case input in Transform to Snake Case
• Cline: hide VS Code-specific banners in JetBrains IDEs

• Go, TypeScript, Python
• NestJS, FastAPI, REST, WebSockets
• PostgreSQL, MongoDB, Redis
• Docker, Kubernetes, GCP
• RAG, LangChain/LangGraph, LLM integrations

LinkedIn · Portfolio