Core backend focus
Spring Boot services, RESTful APIs, PostgreSQL optimization, Redis caching, asynchronous processing, and high-concurrency business operations.
Backend Software Engineer based in Hanoi, Vietnam
LE VAN TUANBackend Software Engineer
Backend engineer building scalable web applications with Spring Boot, microservices, Kafka, Redis, and PostgreSQL.
Hanoi, VietnamSpring Boot • Microservices • Kafka
- 2+
- Years backend experience
- Millions
- Records processed daily
- High
- Concurrency business systems
About me
Backend engineer for scalable transactional systems
Backend Software Engineer with 2+ years of experience building scalable web applications using Spring Boot and microservices architecture. Experienced in high-throughput systems, large-scale transactional data, query optimization, caching strategies, and asynchronous processing.
Delivery environment
Agile product teams, Docker-based workflows, Kubernetes and ArgoCD deployments, plus supporting frontend features with ReactJS and Next.js.
Skills
Backend, database, DevOps, and full-stack tools
- Java
- JavaScript
- TypeScript
- SQL
- Spring Boot
- Microservices
- REST APIs
- ReactJS
- Next.js
- PostgreSQL
- MySQL
- Redis
- Docker
- Kubernetes
- AWS EC2
- Linux Ubuntu
- RabbitMQ
- Kafka
Projects
Systems built around scale, transactions, and reliability
Backend Developer
Tendoo Platform
Migrated backend services from Golang to Spring Boot, redesigned the system using microservices architecture and MyBatis, and developed inventory, order processing, and e-invoicing features for large-scale transactional systems.- Spring Boot
- Microservices
- MyBatis
- Kafka
- RabbitMQ
- PostgreSQL
Fullstack Developer
Viettel Digital Ecosystem
Developed and maintained scalable full-stack features for telecom platforms, including telecom configuration and voucher systems with Redis caching and Elasticsearch search.- Spring Boot
- ReactJS
- Redis
- Elasticsearch
- Microservices
Fullstack Feature Delivery
Viettel.vn High-traffic Systems
Built scalable full-stack features using Spring Boot and ReactJS for high-traffic systems, with RESTful APIs, PostgreSQL optimization, and Docker-based delivery workflows.- Spring Boot
- ReactJS
- REST APIs
- PostgreSQL
- Docker
Experience / Education
Experience across SaaS, telecom, and software engineering
Backend Developer
Tendoo Platform
Built backend services for inventory, order processing, e-invoicing, real-time invoice synchronization, event-driven pipelines, and scalable SaaS operations.
Fullstack Developer
Viettel Digital Ecosystem
Developed and maintained scalable full-stack features for telecom platforms, including configuration and voucher systems, Redis caching, and Elasticsearch search.
Java Developer
TLH Vietnam Technology Joint Stock Company
Developed scalable full-stack features using Spring Boot and ReactJS, designed RESTful APIs for high-concurrency business operations, optimized PostgreSQL queries and indexing, and improved reliability with Docker-based workflows.
Software Engineer
Electric Power University
Software Engineer program with GPA 3.51/4.
Contact
Let’s discuss backend systems and platform work
Reach out for backend engineering roles, full-stack product work, or platform systems involving Spring Boot, microservices, data pipelines, and scalable deployments.