JobFlow AI
Human-in-the-loop job intelligence with explainable matching, application workflows, and a production-minded service architecture.
FASTAPI / NEXT.JS / POSTGRESQL / QDRANT / N8NI engineer resilient backends and intelligent systems.
I’m Karthikeyan S, a software engineer in Germany building scalable products with Java, Spring Boot, Python, FastAPI, AWS, and AI/ML.
01 / Work
Selected work
Systems that combine strong engineering foundations with useful AI.
Knowvera
Secure document intelligence workspace for semantic search, grounded chat, citations, and real-time collaboration.
NEXT.JS / TYPESCRIPT / SUPABASE / PGVECTOR / GEMINIMemoryOps
Incident-response agent with durable operational memory and distributed vector retrieval across past incidents.
PYTHON / AWS BEDROCK / LAMBDA / COCKROACHDBAdaptive DevSecOps
Risk-aware delivery pipeline that turns vulnerability evidence into explainable deployment decisions.
PYTHON / GITHUB ACTIONS / DOCKER / CODEQL / OWASP ZAP02 / Expertise
Built for complexity.
Backend systems
Clear, testable service architectures designed to remain dependable as products grow.
- Java & Spring Boot
- REST APIs
- Microservices
- Data workflows
Python & AI
Practical AI grounded in reliable pipelines, explainable behavior, and human control.
- Python & FastAPI
- AI / ML
- RAG
- Vector search
Cloud & delivery
Secure infrastructure and release workflows that make software easier to operate.
- AWS
- Docker
- CI / CD
- DevSecOps
Systems thinker.
Constant builder.
I turn complex requirements into maintainable systems—connecting product thinking, backend engineering, cloud infrastructure, and applied AI.
My work is shaped by a practical bias: understand the real problem, make the architecture explicit, ship a working system, and improve it with evidence.
● BASED IN GERMANY · OPEN TO COLLABORATION