한국어Email Jake

Engineering lead with an AI agent team

Deploys run on my instruction. In 2026 every client change request shipped within 24 hours. A fintech platform reached production data migration in five months.

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Worker app home: available withdrawal amount, the activity score that raises the limit, and suggested activities
Jake Tae-moon Jo
CTO at 5 companies · 50-person Vietnam R&D centre in 6 months

6 featured projects

Worker app home: available withdrawal amount, the activity score that raises the limit, and suggested activities

Earned Wage Access fintech platform, Vietnam

Jun 2026 – present · Data migrated

Office dashboard (Korean UI): visits today, cash handover pending, this week's sales, overdue payments and open service requests

Operations system for home-appliance sales, rental and maintenance

May – Nov 2026 · 3 areas in live use

Friend map: the app's first screen, with friends scattered as round photos

Reputation-based trading platform

Oct 2026 (20 days) · Pre-launch

Director dashboard: project status, today's report submissions and reports pending review

Daily site reports and project management for a construction company

Apr – Jul 2026 · Client UAT

A translation pipeline for feature-film screenplays

Sep – Oct 2026 · 4 films, 5 full runs

Wholesale power-price analysis pipeline, North America

Aug – Sep 2026 · 6 hypotheses adopted

Roles and gates in the agent team

With people, I managed a 30-person development team directly from 2024, ran a 12-person product team as a co-founding CTO (2014–2015), and set up a company's operations and designed its hiring assignments (45 submissions in 2025). On the 2026 EWA platform, the agent team's roles were split like this.

In a team of people or a team of agents: split the roles, put gates in place, and keep a record of decisions.

How I lead
  • Built organisations from zero: a Vietnam R&D centre of 50 people in 6 months, and, as a co-founding CTO, a development team that shipped an MVP in 6 months and a 12-person product team. More recently, from 2024, I managed a 30-person development team directly.
  • Split the roles and put gates in place: when setting up a company I defined finance, HR and engineering operations and the development methodology first, and built hiring assignments as real codebases with tests already in them (45 submissions in 2025). The agent team was split into 13 roles (9 plus 4 reviewers), and three of the reviewers sit in the pipeline's review stage.
  • Record decisions with their reasons: the agent team went ahead on recommended defaults so work never stalled; 192 of the 199 decisions record how hard they are to reverse, and those that reverse an earlier decision name the one they reverse.
  • Kept coding under leader titles: EVM smart contracts as a CTO, iPhone apps and back ends as a co-founding CTO.
See how I set up and ran the work on the 2026 EWA platform

Me

person on the build team (me)
1
  • Designed the 13-role team and the 8-stage pipeline (Jun 14)
  • Decision sign-off or input: 68 of 199 rows marked by a person, 37 of them with my name (13 confirmed · 24 input)
  • Migration rule: no v1 data may be deleted
  • Go-ahead for production: push approval, production deploy, store submission

Agents

roles
9
commits co-authored by AI (1,853 of all 2,130)
87%
  • Lead: orchestrator
  • Design: architect, designer
  • Build: backend, web, app developers
  • QA, DevOps, docs

Review gate

reviewers (9 + 4 = 13 roles; 3 in the pipeline)
4
  • 30 fix commits mention security review or a security fix (Jun 14 – Oct 29)
  • Three reviewers in the pipeline: security (when money, auth or personal data changes), code (always), API contract (when the contract changes)
  • PSP failover: fixed 4 findings from 3 security reviews

18+ years of work in 4 countries

I held the CTO role at 5 companies, founded or co-founded 6, and built a Vietnam R&D centre into a 50-person organisation in 6 months.

  1. Founder · Lead Engineer · LogicaJ Korea2026 – present
  2. General Director · XT Solution Vietnam2025 – 2026
  3. Director of Business · Papa Mobility Korea2024 – 2025
  4. CTO → CSO · Daoukiwoom Innovation VietnamSingapore2021 – 2024
  5. CTO · Cryptory Vietnam2022 – 2023
  6. Founder & CEO · JJBP VN Vietnam2018 – 2021
  7. Founder & CEO · Vietnam D2 Global Vietnam2016 – 2021
  8. Co-founder & CTO · Kabbler US2015 – 2016
  9. Co-founder & CTO · LiMOTAXI Korea Korea2014 – 2015
  10. Early career: 7 roles

    Vingle · Wizehat · LHSG · BL Studio · Uajjang · Innotive Korea · Thin Multimedia

    2006 – 2014

6 more projects