About me

A man with enthusiasm & research interest

I’m Luan, from Vietnam. I have been in IT industry for 6 years. For now, I’m a DevOps Engineer. People say that I’m a funny and sociable guy. I feel that’s true :)

Work experiences

Senior DevOps Lead

2019 - Present
TMA Solutions, HCMC

Working with a start-up in Security domain. Here I’m in the role of DevOps Engineer, then DevOps Technical Prime. I’m responsible for:

  • Developing and managing CI/CD pipelines on cloud & on-premise environments (AWS, Azure, VMWare vSphere, Kubernetes (EKS), KVM) using Jenkins
  • Developing and managing application deployment scripts on above environments using Terraform, Terragrunt, Ansible, Helm
  • Designing and implementing monitoring solution for CI/CD pipelines and infrastructure using Prometheus, Grafana, InfluxDB
  • Infrastructure administration: Jenkins, BitBucket, Artifactory, Prometheus, Grafana
  • Supporting Engineering teams (Dev, QA) for Jenkins build issues and infrastructure issues
  • Refactoring our customer’s process with faster, more reliable CI/CD workflow from development to product release
  • Ensuring daily tasks’ knowledge and technical guidance/support/code reviews for team’s members (US, UK, India, Singapore, Vietnam)

DevOps Solution Consultant

2021 - Present
TMA Solutions, HCMC

Along with the Leader role in the main project above, I also work as a SME/Consultant for Cloud/DevOps in various domains and solutions:

  • CI/CD pipelines migration/development/maintenance solution between Jenkins, TeamCity, Gitlab CI
  • Cloud migration solution (On-prem to AWS, AWS to AWS)
  • Host/component/endpoint-based application monitoring system design and implementation solution using Prometheus, Telegraf, InfluxDB, Monit, Grafana)
  • Cloud/on-prem infrastructure setup and maintenance solution utilizing Infrastructure-as-Code, Configuration-as-Code frameworks
  • Research new technologies in new domains (GitOps, Cloud Migration, 5G, DevSecOps), new CI/CD tools (GitHub Actions, ArgoCD, BitBucket pipelines), conduct PoC to apply into other projects
  • Conducting knowledge transfer, technical sharing, training sessions for other teams and company-wide

QA Automation Engineer

2018 - 2019
TMA Solutions, HCMC

Working with an outsourced North America based enterprise in Telecommunication domain. Here I was in the role of Automation Engineer. I was responsible for:

  • Developing and maintaining automation testing frameworks with Selenium Java, Postman API
  • Writing automation test scripts, deploy and test the system on OpenStack private cloud
  • Writing and managing CI pipelines on Jenkins for all testing phases (sanity, functional, performace, regression)
  • Performing manual/automation testing for cloud products (OpenStack, NFV)
  • Involving in new tech research (DevOps, public clouds) and start investing in Amazon Web Service
  • Conducting technical sharing sessions for internal team and other teams

This is my first project after graduation, in which I was led by great mentors and learned many things that leads me to DevOps domain.

R&D Engineer

2017 - 2018
iNext Technology JSC., HCMC

I had a part-time job here - a young start-up - as a R&D engineering until my graduation. My resposibilities included:

  • Developing software for health-care solution for Vietnam hospitals
  • Managing infrastructure (hardware servers)
  • On-site installation at rural hospitals.
  • Investigating and building demo system on Openstack and OpenShift cloud platform.

I mainly use Java for the products, beside a little JavaScript, HTML, CSS for web development.

R&D Intern

2017
Viettel Smart Center, HCMC

I experienced my internship period here as a R&D engineer. My focus was compiling the integrated systems for IoT with Wifi and Zigbee.

This was the first time I use Linux and love it, learn how to compile modules using gcc, make and run my very first “Hello-world” Linux app.

Training and certifications

I joined a lot of training classes from DevOps, Kubernetes, ISTQB to Project Management in TMA throughout working. Besides, I also have some certifications to mark the milestones in my career path.

  • Certified Kubernetes Application Developer
  • Linux Foundation - 2023
    Certified Kubernetes Application Developer
  • AWS Certified - Developer Associate (AWS CDA) certification
  • Amazon Web Services - 2020
    AWS Certified - Developer Associate (AWS CDA) certification
  • AWS Certified - Solution Architect Associate (AWS CSAA) certification
  • Amazon Web Services - 2019
    AWS Certified -  Solution Architect Associate (AWS CSAA) certification
  • AWS Certified - Cloud Practitioner (AWS CCP) certification
  • Amazon Web Services - 2019
    AWS Certified -  Cloud Practitioner (AWS CCP) certification

    Codes

    Not having much coding skill but I still spend some of my freetime on improving coding skill (Python, Java, Golang). The reason is that I have to support many teams with different languages and tools (Python, NodeJS, Angular, Java, Golang, C#)

    I have some repositories on GitHub for demo/training purpose:

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    A demo Java Springboot CI/CD workflow

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    A simple microservices project with multiple languages

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    A demo Terraform usage and templates

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    A small utility tool for my daily work

    Skillsets

    Cloud/on-premise (AWS, OpenStack, VMWare, KVM)

    Containerization (Docker, Kubernetes)

    CI/CD/DevOps/DevSecOps (Jenkins, Gitlab CI, Artifactory, SonarQube)

    Infrastructure-as-Code (Terraform, Packer, Ansible)

    Monitoring & Observability (Prometheus, Telegraf, monit, Grafana, Loki)

    Scripting & programming (Bash, Groovy, Python, Make, Java, Golang)