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I will enterprise microservice backend , java spring boot
Duong Tran
About this gig
Need an enterprise microservice backend built by someone who's done it in production? I've delivered high-performance platforms processing millions of events daily with 99.9% uptime.
What you'll get:
Latest Java 21 + Spring Boot 3.5 technology stack
Clean layered architecture with reusable shared libraries
API Gateway with flexible authorization levels (public/authentication/authorization)
Feign Client for type-safe inter-service communication
RFC 7807 compliant exception handling
OpenAPI 3.0 + Swagger UI for API documentation
Jenkins CI/CD pipeline for multi-module builds
Production-ready with Docker/Jib containerization
Kubernetes deployment with Helm charts (dev/staging/prod)
OpenTelemetry tracing + Prometheus/Grafana monitoring
Flyway migrations, ArchUnit tests, Spotless formatting, Code quality enforced via SonarLint
Full source code, Helm charts, CI/CD config, and docs
Production results:
10% latency reduction via Redis optimization
20% faster queries with Elasticsearch
20% performance gain using APM monitoring
CKAD + AWS certified. I build backends that scale under pressure and deploy without downtime. Let's talk!
Get to know Duong Tran
Duong Tran
Senior Backend Engineer
- FromVietnam
- Member sinceSep 2026
Languages
English, Vietnamese
I am a Senior Backend Engineer specializing in AI Engineering, LLM agent orchestration, and large-scale microservices. I have extensive experience building intelligent transportation systems and AI-native banking agents using Java, Spring Boot, and LangGraph. I am passionate about mentoring and building high-performance, scalable infrastructure.
FAQ
What Java and Spring Boot versions do you use?
Java 21 LTS and Spring Boot 3.5 with Spring Cloud 2024.x. All dependencies use the latest stable versions with long-term support for maximum security and compatibility.
Can you integrate with my existing database or services?
Yes. I can connect to your existing PostgreSQL, MySQL, MongoDB, or any REST/gRPC external service. I'll create a client-lib for clean internal service communication.
Do I get the full source code?
Absolutely. You receive 100% of the source code, Helm charts, CI/CD configs, Dockerfiles, and documentation. Full ownership with no recurring fees or vendor lock-in.
How do you handle authentication and authorization?
JWT tokens with refresh token rotation. RBAC with dynamic endpoint- level access control — you can configure which roles access which API endpoints without code changes.
Can this scale to handle high traffic?
Yes. Each service scales independently on Kubernetes. Redis caching reduces DB load by 60-80%. The architecture handles millions of requests daily — proven in my production deployments.
