0code changes per new partnerMulti-partner loan platform
Loan management and payments with a configuration-driven integration framework: a new partner is onboarded without code changes.
Selected work
Systems that move money
6 projects
0code changes per new partner
~35%of total profitFinance mini-apps
Four revenue-generating mini-apps with Mcredit, CUB, F88 and VIB, each serving 12,000 to 30,000 users a month.
~30Kdaily usersPaybill bill payments
A new bill payment flow in the Paybill mini-app, integrated with a payment partner.
+100%partner revenueScaling a partner service
Maintained and scaled a service to meet new demand for a lending partner.
−75%monthly translation costInternal translation platform
Replaced third-party translation software with an in-house platform.
$320Klicensing fees removed per yearLocalization workflow tool
A workflow manager for localization across more than 100 Nexon games.
Projects
Things I make after hours
Peepcraft
A character creator: build a person from hair, faces, bodies and poses, set them in a scene, and export it.
- Open Peeps parts with a dice per tab
- Whole figures and things for a scene
- Four themes
- SVG and PNG export
About
Backend engineer for fintech products
Most of my work sits where money moves between companies: lending partners, bill payment providers and banks. I care about the parts that keep it boring in the best sense: correct, observable, and easy to extend to the next partner.
- Based in
- Ho Chi Minh City
- Focus
- Payments, lending, partner integrations
- Education
- Bachelor of Computer Science, Ho Chi Minh City University of Technology (GPA 3.5 / 4)
- Languages
- Vietnamese, English (TOEIC 850)
Activity
What a year of work looks like
Contributions · sample data
Now
Senior Software Engineer at Zalo: a multi-partner loan platform, the Liobank mini-app, and the plumbing every service shares.
Stack
- Java
- Spring Boot
- NestJS
- React
- Kubernetes
- Docker
- Kafka
- Redis
- SQL
- REST APIs
4+years in production fintech
4revenue mini-apps shipped
100+games on one localization tool
850TOEIC reading & writing
Experience
Where I have worked
Jul 2026 – now
Senior Software Engineer · Zalo
- Cross-cutting concerns across services: central persistent log volume, system migration, instrumentation, a customised K8s Helm chart.
- Architected a multi-partner loan management and payment platform; built the Liobank mini-app; run operations for the CAKE mini-app.
Mar 2025 – Jul 2026
Software Engineer · Zalo
- Owned the backend lifecycle of the Fiza finance mini-apps: Spring Boot services, Kubernetes, CI/CD.
- Delivered 4 revenue-generating mini-apps (~35% of total profit) and a new Paybill flow (~30K daily users).
2023 – 2025
Software Engineer · Nexon Dev Vina
- Built an internal translation platform (−75% cost per month) and a localization workflow tool for 100+ games ($320,000 a year saved).
- Top performance rating, 2023–2024.
Jun – Aug 2022
Web Developer Intern · FPT Software
- Led a team of 7 on a training program management system in React.
Contact