Deepak Kumar Jha
Skills — Technical Lead · Senior Full-Stack Engineer
The stack I work in day to day, grouped by where it sits in a system. Levels describe what I can own end to end without supervision, not what I have read about.
Backend
Service design, API contracts and the runtime behaviour that decides whether a system holds up under load.
- Node.js11 yrsExpert
- Express.js10 yrsExpert
- NestJS4 yrsExpert
- TypeScript6 yrsExpert
- REST APIs / GraphQLExpert
- MicroservicesExpert
Frontend
Long-lived application front ends — rendering strategy, state, and the migrations that keep them maintainable.
- Angular v2–v1710 yrsExpert
- React / Next.js8 yrsAdvanced
- HTML5 / SCSSExpert
- RxJSAdvanced
Databases
Schema design, query behaviour and caching layers under real read and write pressure.
- PostgreSQLExpert
- MongoDBExpert
- RedisExpert
- MySQLProficient
Cloud & DevOps
Provisioning, deployment and the release path — including zero-downtime rollouts on GCP and AWS.
- AWS (EC2, S3, RDS, Lambda)Expert
- Docker / KubernetesAdvanced
- CI/CD PipelinesAdvanced
- Terraform / IaCProficient
- GCP / AzureProficient
AI / LLM
Model-backed product features built to be evaluated and corrected, not demoed once.
- OpenAI / GPT APIsAdvanced
- Claude / Gemini APIsAdvanced
- RAG ArchitectureAdvanced
- LangChain / Vector DBsProficient