Bui Duc An — Senior backend engineer
Ten years shipping systems on one crypto exchange, through its JFSA licence application, the FTX bankruptcy, and a US$140M asset return to customers.
Now building Custodiem's side of a Fireblocks-integrated transaction processor in C# for bitFlyer. Ho Chi Minh City · remote contractor or EOR.
At a glance
- Current role
- Senior Software Engineer at Custodiem Inc. (bitFlyer Group, formerly FTX Japan)
- Track record
- Same exchange platform Jun 2016 – present under three successive owners, JFSA-licensed since 2017. Led the engineering behind Liquid's licence application after two outsourced attempts had failed.
- Stack
- Ruby / Rails / Python / C# / PostgreSQL / AWS / Kubernetes / Fireblocks
- Domain
- JFSA regulatory reporting · KYC/AML (eKYC, World-Check) · fiat payment rails · crypto custody · exchange operations
- Working style
- Distributed teams across Japan and Singapore since 2016 · office through 2022, hybrid since · open to contractor or EOR (Deel, Remote.com, Multiplier)
This site is Vietnamese-first. The essays at ducan.today are personal writing, not portfolio. The English surface is the professional side.