Tokyo, Japan · from Thailand 🇹🇭

Teerawat Vanasapdamrong

Engineering Manager · Mobile & iOS

Computer Science graduate with nearly two decades building mobile software. I started as an iOS developer and now lead as an Engineering Manager at PayPay in Tokyo. I love technology and gadgets, and I'm happiest taking mobile products from idea to ship — end to end.

Get in touch
~20
Years in mobile
iOS
Specialty
EM
Current role
Tokyo
Based in

About

Mobile, end to end

Nearly two decades shipping mobile software — from individual contributor to engineering leadership.

I'm an engineer at heart who has spent my career in mobile. I started out writing iOS apps and grew into an Engineering Manager role at PayPay in Tokyo. Along the way I've worked across consulting, e-commerce, banking and fintech — at both nimble startups and large enterprises.

My strongest craft is mobile and iOS, where I can take a product all the way from idea to the App Store. I've also dipped into backend and web, so I'm comfortable reasoning about the whole stack. Outside of work, I'm a genuine fan of technology and gadgets.

Fintech Banking E-commerce Consulting Startups Enterprise

Education

Bachelor of Science in Computer Science

Khon Kaen University · Thailand

Currently

Engineering Manager

PayPay · Tokyo, Japan

Experience

Where I've worked

A career spent mostly in fintech, building and leading mobile teams.

  1. Engineering Manager

    PayPay

    Now 2024 — Present

    Tokyo, Japan · Fintech

    Manage multiple mobile engineering teams across product and platform — core app, infrastructure, operations, and release — at one of Japan's largest cashless payment apps (70M+ users).

    • Scope has spanned high-traffic app surfaces, a 16-member app platform org, and interim tech lead work on architecture and modularization.
    • Drive delivery, people development, and developer experience — including AI-assisted tooling in CI/CD and release automation.

  2. Engineering Manager

    Opn (Omise)

    2021 — 2023

    Bangkok, Thailand · Fintech

    Led a cross-functional team of 8 across iOS, Android, backend, and frontend.

    • Hiring, OKRs, coaching, and delivery across mobile and web products.

  3. Backend Lead · Solution Architect

    Sirius Tech

    2021

    Bangkok, Thailand · Fintech

    Led backend engineering and architecture for a high-frequency trading platform in Go.

  4. iOS Developer · Release Manager

    Siam Commercial Bank (SCB)

    2018 — 2021

    Bangkok, Thailand · Banking

    Led a 13-person iOS team on SCB Easy (1M+ users) and owned mobile release management.

    • CI/CD with Jenkins/Fastlane; internal training and release process improvement.

  5. iOS Lead · Full Stack Developer · Founder

    11Street · Getmii · Iwa Labs

    2010 — 2018

    Bangkok, Thailand · E-commerce · Startups

    iOS lead and full-stack developer across e-commerce and startup products — shipping mobile apps and Ruby on Rails backends.

    • Founded and ran a small software business alongside engineering roles.

Want the full history? Reach out and I'm happy to share details.

Projects

Selected work

A space for things I've built. More to come.

Featured

iroirojapan.com

2026

The web home for iroiro Japan — graded Japanese news reading for learners, with a simple read-and-review flow.

Web Japanese EdTech
View project
Upcoming

iroiro Japan

2026

iOS app for learning Japanese through graded news and spaced-repetition flashcards — read, save, review.

iOS Swift SRS

Coming soon

Skills

What I work with

A little bit of everything, with mobile and iOS as my home turf.

Mobile & iOS

Strongest — end-to-end mobile development

  • iOS
  • Swift
  • Objective-C
  • SwiftUI / UIKit
  • Mobile Architecture
  • App Store Release

Leadership

Engineering management & delivery

  • Team Leadership
  • Mentoring
  • Delivery & Process
  • Technical Direction

Beyond Mobile

Comfortable across the stack

  • Backend
  • Web
  • APIs
  • Databases

Contact

Let's talk

Whether it's about mobile engineering, leadership, or just a good gadget recommendation — I'd be glad to hear from you.

Email LinkedIn GitHub

Based in Tokyo, Japan — open to conversations worldwide.