2024–2025
E-commerce data processing
Expanded an aggregation pipeline from 200 million to 480 million records, covering nearly ten years of data instead of three.
Runtime reduced from 60 minutes to 10 minutes.
Backend & cloud engineer · Osaka
I build reliable software and improve the systems around it.
Go and PHP applications, cloud infrastructure, testing, automation, and thoughtful modernization of existing systems.
Selected work
A few examples that show the kind of problems I enjoy solving: performance, reliability, and removing repetitive work.
2025–present
E-commerce search modernization
Leading a three-person team moving a search platform from a single VM to Kubernetes, covering requirements, architecture, implementation, testing, release, and review.
In testing, data-update triggers improved from ten-minute polling to typically within one minute.
2021–2022
Cloud E2E testing platform
Independently designed and built an automated test platform with parallel execution, reporting, failure reruns, and lower-cost infrastructure.
Personal
SimpleMath ↗
A Go application for generating elementary-school math worksheets, deployed on Cloud Run.
Personal
Worth Money ↗
An iOS income and expense tracker built with Flutter and Firebase. Previously available on the App Store.
Skills
Grouped by the work they support, rather than presented as a wall of technology logos.
Backend
Go, Echo, PHP, Laravel, FuelPHP, API and CLI design
Cloud & infrastructure
Google Cloud, GKE, Kubernetes, Cloud Run, Docker, Linux, Pub/Sub
Data & search
MySQL, PostgreSQL, TimescaleDB, Firestore, Redis, BigQuery, Elasticsearch, Debezium
Quality & delivery
Playwright, unit and integration testing, CI/CD, Git, Bitbucket Pipelines
Experience
From interpretation to engineering, with communication and continuous learning connecting every stage.
System Engineer · X-TRANS, Inc.
Backend development, cloud architecture, performance improvements, monitoring systems, and test automation.
- Lead EC search modernization and review team code.
- Improve legacy EC performance and release processes.
- Build Go and PHP monitoring APIs, CLIs, and agents.
- Design and operate automated test infrastructure.
IT Engineer · Xtrans Vietnam
Developed internal systems with PHP and MySQL, and introduced unit testing.
IT Communicator · Xtrans Vietnam
Interpreted engineering discussions and translated specifications between Japanese and Vietnamese.
Interpreter · Nidec Tosok Vietnam
Translated technical documents and interpreted meetings in automotive manufacturing.
Certificates
Technical learning backed by practical project work.
CKADVerify ↗
Professional Cloud DevOps EngineerVerify ↗
PHP8 Engineer Certification — Semi-Advanced6jpm-aayd-zrmv
OSS-DB SilverVerify ↗
Professional Cloud DeveloperVerify ↗
Professional Cloud ArchitectVerify ↗
OMG UML Professional 2 — FoundationVerify ↗
Education & languages
Language remains an important part of how I understand requirements and collaborate.
Bachelor of Japanese Studies
Vietnamese Native
Japanese JLPT N1
English TOEIC 865
About
Different beginnings, the same curiosity.
I started my career as a Japanese–Vietnamese interpreter and moved into engineering in 2016.
Today I work across backend development, cloud infrastructure, and automated testing. Outside work, I keep learning—often beginning my day at 4 a.m. I also enjoy camping and growing plants on my balcony.
Let’s talk.
About software, an interesting problem, or something you are building.
pqa.dev@gmail.com ↗