Resume
cleanbrain.developer — Backend Engineer, 8+ years of experience.
Backend engineer with 8+ years of experience across Java/Spring and TypeScript/Node.js/NestJS backend systems that connect multiple services — enterprise SaaS platforms, identity/IAM, and applied AI included — and operate under real-world constraints. Focused on system behavior, data flow, failure modes, transaction boundaries, and operational constraints rather than treating any one technology stack as the goal.
Focus areas
Full breakdown →- Backend API Design & Development
- Enterprise System Integration & Distributed Data Flows
- Transaction & Data Consistency
- Authentication & Identity Integration
- Batch, Asynchronous & Event-driven Processing
- Performance Bottleneck Analysis & Production Troubleshooting
- AI / LLM API Integration
Tech stack
Backend
- Java
- Spring / Spring Boot
- TypeScript
- Node.js
- NestJS
- Express
- REST API & WebSocket design
Data
- PostgreSQL
- JPA
- QueryDSL
- Prisma
- Redis
Enterprise Integration
- Salesforce
- SAP S/4HANA Cloud
- WMS
- Kafka
- Event-driven systems
Identity & Access
- IAM
- SSO
- SAML
- OAuth2 / OIDC
- Microsoft Azure
- Microsoft Graph API
AI Integration
- STT
- Translation
- TTS
- LLM Function Calling
- Claude API
Platform & Operations
- Docker
- Kubernetes
- k3s