
Duong Tran
Senior Backend Engineer
Skills

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Work experience
Senior Backend Engineer
Viettel Cyber Security • Full-time
Feb 2022 - Present • 4 yrs 7 mos
• Build data-processing pipelines with Apache NiFi (up to 5M events/day) and run Apache Doris as the analytics engine for license-plate (LPR) and OD-matrix workloads. • Apply Temporal (temporal.io) to orchestrate workflows in the OD-matrix product — OD-analysis jobs, the public-transport optimization algorithm, and traffic-simulation jobs. • Built and operated large-scale ITS backends on a Spring Boot microservices platform, using Kafka for messaging, Redis for caching and MinIO for object storage. • Integrated Elasticsearch for high-performance querying, improving response speed by ~20%. • Operated production infrastructure on Kubernetes with GitLab CI / ArgoCD and Jenkins/Ansible; monitored with Prometheus/Grafana and ELK / APM, reducing incidents and improving performance by ~10%.