Technical Lead · Backend & Distributed Systems · Java / Spring Boot / Kafka / AWS
I design and scale high-volume transactional systems in fintech, eCommerce and inventory,
and I write about what actually works in production.
- 8+ years building backend systems for fintech, eCommerce, inventory and education platforms
- Lead cross-functional teams — architecture, code reviews, delivery, and mentoring engineers
- Production focus: event-driven microservices, Kafka pipelines, payment and invoicing flows, observability
- Now exploring: AI in backend systems — Spring AI, LangChain4j, RAG, and ML-based forecasting
- 🔧 Technical Lead, building fintech & inventory-forecasting systems
- ✍️ Writing practical posts on system design, Kafka and Spring Boot at gautamthapa.in
➡️ More at gautamthapa.in
Full stack
| Area | Tools |
|---|---|
| Languages & Backend | Java (8/11/17/21), Spring Boot, Spring Security, Hibernate/JPA, MyBatis, REST, Microservices, Node.js |
| Distributed Systems | Apache Kafka, RabbitMQ, Event-Driven Architecture, Saga, CQRS, Outbox |
| Data & Caching | PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch, Firebird |
| Cloud & DevOps | AWS (EC2, S3, RDS, SQS, CloudWatch), Docker, Kubernetes, Jenkins, GitLab CI/CD, Terraform |
| Observability & Quality | Prometheus, Grafana, ELK, SonarQube |
| Frontend | TypeScript, Angular, Next.js, React |
| AI | Spring AI, LangChain4j, OpenAI, Anthropic, RAG, Forecasting |
- Mentorship & interview prep — 1:1 backend mentorship, mock technical and system design interviews, resume/LinkedIn reviews → Book on Topmate
- Consulting — architecture reviews, Kafka/microservices design, performance and scaling → gautamthapa.in
Building scalable systems — and helping engineers build theirs.