Service Ops
Live on the Shopify App StoreTurns Shopify into a full service-management system: tickets from intake through delivery, deposits taken through Shopify checkout, and a shareable status link so customers stop phoning to ask.
Full-Stack Engineer · Can Tho, Vietnam
I ship full-stack products end to end, then make them fast enough that nobody brings up performance again.
01 — Experience
Five years of shipping products end to end.
Most recently my own studio, alongside four Shopify storefronts as the sole front-end engineer. Before that: review platforms, medical software, and the pipelines that kept them releasable.
My own studio. Three products built and shipped since January, all three live on the Shopify App Store.
- Founded a technical studio building Shopify apps. Service Ops, Team Up and Thynk are all live on the Shopify App Store.
- Designed every product edge-native on Cloudflare — Workers, Durable Objects, D1, R2 — so they run with no origin server and near-zero fixed cost.
- Owned the whole surface: architecture, UI, billing, App Store review, support and marketing.
Cloudflare WorkersDurable ObjectsD1React RouterShopify APIsMCPScentiment
Shopify DeveloperFour storefronts, one engineer, 99/100 on PageSpeed.
- Run four Shopify stores in parallel — theme work, Shopify Plus configuration, and custom apps — as the sole engineer on the front end.
- Rebuilt the theme and its underlying structure, taking Google PageSpeed to 99/100 and keeping it there through subsequent feature work.
- Upgraded a legacy codebase in place, without a freeze on merchandising changes.
Shopify PlusLiquidReactTypeScriptCustom AppsMeowCart
Led the migration that moved the product off PHP.
- Led the PHP → Node migration for the app platform, incrementally and without downtime.
- Built Shopify apps across several frameworks — Remix, Express, Liquid theme extensions.
- Refactored the existing codebase to make feature work predictable again.
NodeRemixReactGraphQLMongoDBFirebaseLiquidb13.ai
One codebase, three platforms, on a no-code substrate.
- Delivered features across Android, iOS and web from a single Bubble.io application.
- Refactored a core module that had become the bottleneck for every new release.
Bubble.ioAusgezeichnet.org — NFQ
The longest engagement, and where I learned to argue about product.
- Built and redesigned a ratings and review platform integrated with Google Reviews.
- Worked directly with the Product Owner on business ideas, then implemented them — including saying no to the ones that would have cost more than they returned.
- Introduced automated CI/CD on GitHub Actions and Docker, and drove down accumulated technical debt.
PHPSymfonyMongoDBDoctrineTwigDockerGitHub ActionsReal-estate platform
Property listings and editorial, owned end to end.
- Built a Laravel application for advertising property listings and publishing news articles.
- Owned front end, back end, and the deployment process.
PHPLaravelMariaDBEloquentMaterial UIPhysiotherapy medical SPA
Medical records and physical hardware, in one interface.
- Built a single-page application for tracking medical records and controlling physiotherapy devices over an MQTT broker.
- Redesigned the whole interface, adding the motion and interaction the clinical workflow needed to stay legible.
NodeExpressReactTailwindMQTTMongoDBMedical tracking platform
First real product: a stroke-patient platform for doctors and patients.
- Designed and implemented both sides of a web application used by stroke patients and their doctors.
- Turned the client's concept into a shipped product, advising on scope and best practice along the way.
- Set up CI/CD on Jenkins and redesigned the entire site.
NodeExpressGraphQLApolloReactReduxMongoDBMQTTJenkins
Education
Engineering degree
Best number on this page
0/100
02 — My startup
vzlab — engineering products that solve real problems.
A technical studio building commerce software. I look for the manual workflow — the spreadsheet, the group chat, the sticky note on the counter — and replace it with something reliable and polished on modern cloud infrastructure.
Team Up
Live on the Shopify App StoreGroup ordering for decorated-apparel businesses. The organiser shares one link, each participant picks their own size and design, and the shop gets a single consolidated invoice plus production sheets generated for them.
Thynk
Live on the Shopify App StoreAn AI operations manager for Shopify. Ask it about live store data, hand it a task, or schedule a workflow — and reach it from the Shopify admin, Slack, or Telegram.
TypeScriptReactCloudflare WorkersDurable ObjectsD1R2Shopify Admin APIMCP
03 — Selected work
Six builds, and what each one actually solved.
Each case study covers the problem before the stack, because the stack was never the interesting part.
04 — Stack
What I work in, grouped by how far I'd take it.
Core
TypeScriptReactReact RouterNodeExpressShopify LiquidShopify Admin & Storefront GraphQLTailwind CSS
Edge & infrastructure
Cloudflare WorkersDurable ObjectsD1R2Workers AIDockerLinuxGitHub ActionsJenkins
Data
MongoDBMySQL / MariaDBSQLite / D1DrizzleDoctrineGraphQL / Apollo
Also shipped with
PHPSymfonyLaravelNext.jsReduxSCSSMotionMQTTBubble.io
Practice
TestingOOP & design patternsTracing & debugging productionSpotting technical limits earlyScrum / Kanban / Jira
05 — Contact
Open to work worth doing.
Five years shipping products end to end. I'm at my best turning a rough idea into something real — finding the manual workflow hiding inside a request, picking a stack that won't fight back, and owning it from data model to deployed interface. I've done it solo often enough to know which shortcuts cost you later.
- GitHub
- khoinguyen12200
- Based in
- Can Tho, Vietnam