Infrastructure that
scales| with intent.
DevOps Engineer at GTEL. I architect systems for 99.9% availability, managing mission-critical IoT platforms and emergency response systems.
Verified Expertise
Recent Missions
GTEL OTS
DevOps Engineer | Dec 2024 — Present
Orchestrate reliability and automation for mission-critical Public Safety, IoT, and AI-driven systems in Private Cloud and On-Premises environments. Manage high-availability (HA) infrastructure and end-to-end CI/CD pipelines for emergency response platforms requiring near-zero downtime. Served as the L2 on-call responder for the core IoT platform while providing cross-project support.
GEIC IoT Hub (Main DevOps - Current)
Engineer, deploy and scale infrastructure and software for up to 1 million concurrent fire detection sensors using self-managed RKE2, MQTT, Kafka, Redis cluster; achieved 99% availability via DC and DR strategy. Install, patch and maintain Oracle RAC with Dataguard and MongoDB shard cluster (Over 150m docs/day) to ensure stability of self-managed data consistency solutions between multiple sites, minimizing DC-DR switchover downtime to less than 5 minutes. Standardized CI/CD pipelines using GitLab CI, Helm, and ArgoCD.
gsafe.com.vn ↗Command & Control (C7) and 114 (Main DevOps - Current)
Automated dispatch logic and incident management systems to ensure continuous operation during critical resource mobilization. Maintain infrastructures for BaoChay114 with over 500,000 downloads, internal app and command centers for soldiers.
sso.baochay114.gov.vn ↗SOS HCM City (Main DevOps - Maintain phase)
Deploy, optimize city-wide emergency alerting with low-latency routing from edge users to tactical units via central command hubs. Currently has 60,000 downloads.
sosanninhtrattu.com ↗Intelligent Operations Center (GTEL IoC) (Support)
Integrate VMS and 3D mapping for high-security environments, facilitating data flow between edge AI processing and central storage.
GTEL Map (Support)
Provision, support and maintain infrastructures running on OpenStack.
map.gtel.vn ↗C8 Command Center (Support)
Deploy, support an old POC infrastructures - a part of VNeTraffic application with over 4,000,000 downloads.
citizen-sso.vnetraffic.gov.vn ↗TAPTAP
DevOps Engineer | July 2024 — Aug 2024
Deployed self-managed Kafka clusters and integrated OpenTelemetry with Nginx-Ingress for production tracing. Implemented ModSecurity WAF and centralized Grafana alerting for cross-environment monitoring (Prod/Stage). Automated CI/CD flows and managed Kubernetes resources via Rancher.
taptap.com.vn ↗Freelance
System Monitor | Oct 2023 — May 2024
Resource monitoring and incidents response for servers. Managed proxies and security settings on Cloudflare. Wrote custom scripts for automation workflows to improve operational efficiency.
Research & Academic
Undergraduate Researcher
Jan 2023 — March 2024
Published "An Effective Unsupervised Cyber Attack Detection on Web Applications using Gaussian Mixture Model" at CITA 2024. Focused on identifying anomalous patterns in HTTP traffic without pre-labeled datasets.
Education
University of Information and Technology (UIT - VNUHCM)
Aug 2021 — Nov 2025
Bachelor of Information Security.
Current GPA: 8.58/10
Quoc Hoc Hue High School for the gifted
Aug 2018 — May 2021
High School Diploma.