NAVER VIETNAM
HCMC, VN
Fullstack Engineer — Jan 2024 - Now
- Java Spring as Backend: Built and maintained RESTful APIs using Java, Spring Boot, and Spring Cloud, ensuring scalability and reliability across distributed systems. Utilized multiple Spring Cloud services such as Spring Cloud for AWS, Spring Data JPA, and Spring Data JDBC for seamless integration.
- Job Scheduling & Data Pipeline: Developed job scheduling systems with Python & Apache Airflow, deploying and maintaining over 200 large-scale crawling tasks across platforms like YouTube, iTunes, Apple Music, Melon, and Google Trends. Combined with Kafka to handle asynchronous event-driven processing.
- Monitoring & Performance Tuning: Implemented system observability using Grafana, Nelo, and Pinpoint, enabling proactive monitoring and performance optimization of backend services.
- DevOps & Deployment: Hands-on experience with containerized environments: deployed and managed microservices with Kubernetes (k8s) clusters, automated delivery pipelines using ArgoCD, Jenkins, and GitHub Actions CI/CD. Configured and maintained Docker, Nginx with TLS, and independent services like Vitess, MongoDB.
- Database Design & Optimization: Designed and optimized relational databases (MySQL, PostgreSQL), ensuring data integrity and high performance for large-scale systems. Applied indexing, query optimization, and sharding techniques for scalable workloads.
- Job Phoning Project: Developed backend services for a mobile application supporting notifications (fan-in/fan-out), newsfeeds and livestreaming. Optimized database performance and implemented efficient notification delivery for large user bases.
Kite Metric
HCMC, VN
Fullstack Web Engineer — Sep 2020 - Dec 2023
- Backend & Microservices: Developed backend services with NestJS in a microservices architecture, integrating via RESTful APIs.
- Web Applications: Built admin, customer, and monitoring portals with React and Ant Design.
- Data Infrastructure: Designed internal PostgreSQL schema for insurance entities, and implemented data warehousing with Amazon Redshift, ETL pipelines using AWS Glue.
VNG Corporation
HCMC, VN
Associate Software Engineer — Aug 2019 - Aug 2020
- Backend Development: Built data collection and backend services in Java/Python using Vert.x, working with GraphQL to replicate and process large-scale Wikidata (1TB+).
- Database & ML Support: Optimized data pipelines and database design to support rule-based and machine learning Question Answering systems.
- Solution Engineering: Designed and delivered scalable backend solutions to meet complex business requirements.
Big-O Coding Center
HCMC, VN
Teacher Assistance (Part-time) — Sep 2015 - Apr 2023
- Teacher Assistance: Taught algorithms and data structures, and created comprehensive problem sets with test cases.
- Supporter: Provided guidance in coding, debugging, and problem-solving.