veasy.

Work

Nine-plus years of backend engineering and DevOps across payments, fintech and real-time data — from hands-on code to leading the teams and the infrastructure behind them. The short version is on my about page; here's the full track record.

Experience

.NET Leader / Technical Lead · ITE
2022 — Present
  • Revived and shipped a stalled product (frozen ~2 years) by diagnosing the root issues and restructuring its architecture.
  • Led the migration from a monolith to microservices, improving scalability and performance.
  • Integrated multiple payment methods and hardened authentication & authorization with IdentityServer.
  • Built and maintained a fully automated CI/CD pipeline (GitLab CI + Jenkins + Docker).
  • Planned work, allocated tasks and coached an 8-member engineering team.
  • Integrated OpenAI to automate reporting and improve content; rolled out AI Agents and internal guidelines so the team codes faster.
.NET Core · IdentityServer · PostgreSQL · Ocelot · Redis · Selenium · ELK · Jenkins · Docker · Portainer · MinIO
Senior Backend Developer · FPT Software
2021 — 2022
  • Optimized API performance, cutting response times and resource usage.
  • Worked directly with clients in Singapore and France to analyze and solve complex technical issues.
  • Ran code reviews and mentored the team on backend best practices.
.NET Core · MS SQL
Sub-Team Leader / Backend Developer · ITE
2019 — 2021
  • Built and optimized a secure payment gateway & routing platform for major partners (VNPost, ViettelPay, Bamboo).
  • Led integration, SIT and release activities; improved internal Git workflows.
  • Set up and maintained the company GitLab server and internal infrastructure.
Java · Spring Boot · Tomcat · Oracle · MySQL · MongoDB · Linux · GCP · Jenkins · Docker
Backend Developer · FiinGroup
2019
  • Built a real-time processing service for stock-exchange data (HNX & HOSE).
  • Sustained high throughput and low latency under peak load.
.NET Core · MS SQL · Redis
Backend Developer · NashTech / Harvey Nash
2018 — 2019
  • Delivered performance improvements within a 16-member project team.
  • Added robust unit tests and improved backend reliability.
.NET Framework · MS SQL
Backend Developer · VNPAY
2017 — 2018
  • Built VNPAY's recruitment website and internal tools.
  • Built a mobile web app for TPBank's airline-ticket purchasing flow.
  • Integrated the VNPay payment gateway.
.NET Framework · Oracle · JavaScript · Framework7

Toolbox

Languages
.NET, Java
Databases
PostgreSQL, MS SQL, MySQL, MongoDB, Redis, Elasticsearch
DevOps / CI-CD
Docker, Jenkins, GitLab CI, Git, Portainer
Monitoring
Prometheus, Grafana, ELK (Logstash, Kibana)
Gateways
Nginx, Ocelot
AI
Claude, Claude Code, Cowork, OpenAI API, AI Agents
Operating systems
Linux, Windows

Education

People Security Academy · Information Technology
2013 — 2017

Want the details or a fit for your team? Get in touch or connect on LinkedIn.