Skip to content
Hansel Notes

About

Hansel Susanto

Software engineer · Tokyo, Japan

Portrait of Hansel Susanto

I’m Hansel Susanto, a software engineer in Tokyo. By day I work on the LINE messaging app at LY Corporation (LINE Yahoo). On the side I run MTS Studio — a remote-first product studio I started in 2018 — and I’m building Incid, the studio’s next product, an on-call command center for engineers paged at 3 AM.

Work

A reverse-chronological list of the places I’ve worked.

  1. LY Corporation (LINE Yahoo) logo

    Software Engineercurrent

    LY Corporation (LINE Yahoo)·Tokyo

    On the Messaging Team, working on the core feature functionality of the LINE messaging app.

  2. MTS Studio logo

    Founderongoing

    MTS Studio·Remote

    A remote-first product studio I started in undergrad, building apps across EdTech, community platforms, and IoT.

  3. Stockbit logo

    Software Engineer

    Stockbit·Jakarta

    On the Transaction Team handling user balances, money movements, and stock positions for the core securities product.

  4. ByteDance logo

    Software Engineer

    ByteDance·Jakarta

    Worked on the BNPL payment infrastructure for TikTok Shop across the Asia-Pacific region.

  5. Tokopedia logo

    Software Engineer

    Tokopedia·Jakarta

    Led the GoPay Pinjam Open Market project and shipped the OneKYC SDK.

  6. Lumina (YC W22) logo

    Software Engineer

    Lumina (YC W22)·Remote

    Designed a WebRTC-based live-streaming service and built an NLP model for spam detection.

  7. Tokopedia logo

    Software Engineer Intern

    Tokopedia·Jakarta

    Led a cloud migration to GCP and contributed to the Tokopedia Card product.

  8. Shopee logo

    Backend Engineer Intern

    Shopee·Jakarta

    Maintained the “Buy Voucher Get Coins” system and built a multiplayer game server in Go.

  9. Bangkit Academy logo

    Machine Learning Participant

    Bangkit Academy·Indonesia

    An eight-month machine learning program run by Google, Tokopedia, Gojek, and Traveloka.

What matters to me the most

A few principles I keep coming back to.

  • Magis.

    Latin for “more.” The Jesuit principle I grew up with: always do more, always do better, in service of something greater than yourself. The self-improvement engine that everything else here runs on.

  • Daily practice is the only true compounding asset.

    For me, that practice is the violin. Every day, even when I don’t feel like it.

  • The best engineering ideas come from outside engineering.

    Most of mine came from books that had nothing to do with software.

Get in touch

My inbox is open. I read everything and reply to most things.