Fig 2.1Performance
2 min → <10 s
Cut heavy platform query runtimes from around 2 minutes to under 10 seconds.
YTL AI Labs · 2026
I make money move safely, queries run fast, and AI agents behave.
Lucas Sim, backend engineer, 8+ years across fintech, SaaS and AI platforms. Now AI Platform Engineer at YTL AI Labs.
$ mail hello@…
See the proof- ~0×faster heavy queries
- 5–6person team led to launch
- 0Mrows migrated live
01 · About
I'm Lucas. Eight years of backends: a digital bank, a 0‑to‑1 SaaS I led, and now MCP tooling at YTL AI Labs. I like the parts nobody sees. Next chapter: Australia or New Zealand.
- Based in
- Kuala Lumpur --:--
- Work rights
- Malaysian citizen, needs AU / NZ sponsorship
- Studied
- Bachelor of Computer Science, 2021
02 · Proof
Two things I'm known for, and four more.
Every figure on this page answers the pointer.
Fig 2.2Leadership
Team of 5–6
Led Skribble Learn as Lead Developer: architecture, infrastructure and mentorship for a team of 5 to 6, shipped in about 12 months.
Skribble Lab · 2023 — 2026
Fig 2.3YTL AI Labs
20M rows
Migrated live, zero downtime
Fig 2.4YTL AI Labs
MCP + guardrails
Agents with boundaries
Fig 2.5GXBank
Redis mutex
Onboarding race, fixed
Fig 2.6GXBank
Hotspots
Redis hash slots, rebalanced
03 · Career
Eight years, four companies.
2026 — now
AI platform
AI Platform Engineer · YTL AI Labs
2 min → <10 s · heavy platform queries
- Built MCP for the internal operational portal so teammates can pull data and run approved actions through an agent instead of only using the UI.
- Wired existing market MCP servers into day-to-day workflows (credentials based) for tools such as Datadog, Grafana, GitHub, and cloud systems.
2026
Digital banking
Senior Software Engineer, Backend · GXBank
Race condition · fixed in onboarding with a Redis mutex
- Built and maintained high-concurrency backend microservices in Go for digital banking services designed for high availability and high-volume financial traffic.
- Resolved a critical race condition in the onboarding flow using Redis-based mutex locking.
2023 — 2026
SaaS · edtech
Senior Software Developer → Lead Developer · Skribble Lab
Team of 5–6 · led from zero to launch in ~12 months
- Promoted to Lead Developer for Skribble Learn. Owned solution architecture, infrastructure planning, and mentorship for a team of 5 to 6.
- Shipped the Skribble Learn platform within about 12 months, with major gains in processing speed and usability versus legacy systems.
2021 — 2023
Fintech · payments
Senior Full Stack Developer · qBayar
1 login · SSO with QR sign-in across products
- Built a centralised Identity Server (SSO) and auth package, including QR-based login across products.
- Led legacy migration from Yii1/Zend to Laravel, improving release speed and reducing technical debt.
2018 — 2020
Fintech · payments
Full Stack Developer · qBayar
RHB H2H · payment gateway integration, led
- Led RHB Host-to-Host payment gateway integration and related finance automation workflows.
- Built petty cash claims with RHB payouts and led purchase/inventory tracking systems.
Also · contract
Transaction systems for a former employer
Concurrency, locking and money movement. Remote.
Education
- Bachelor of Computer Science · UOWM KDU University College, 2021
- Diploma in Computer Studies · KDU University College, 2019
04 · Projects
Things I've built.
Pick one for the details.
Fig 4.1Alpha
A Mac database app in Rust
Fig 4.2Open source
Semantic search, visible
Fig 4.3Open source
Money moving, in real time
Fig 4.4Open source
A Claude Code plugin
05 · Contact
Next stop: Australia or New Zealand.
Senior backend or full-stack roles. Malaysian citizen · needs AU / NZ sponsorship · ready to relocate.
$ mail hello@…
Fig 5.1KUL → SYD · 6,620 km
Kuala Lumpur
--:--
Sydney
--:--
Fig 5.2KL, for now
Let's connect.
Message on LinkedIn