Laurence Oh
@laurenceoh
Technical Lead backend engineer building distributed, observable systems.
What I'm looking for
I’m a backend engineer and technical lead with 13+ years building distributed systems across fintech, payments, trading, game servers, blockchain infrastructure, and real-time sports data pipelines. I’m comfortable owning architecture decisions end-to-end—from schema design to production observability—with a practical bias toward operational clarity and maintainability.
Most recently, I worked directly with the CTO to plan, architect, and evolve technical strategy and stack, while leading a backend team of 4–5 engineers in a flat, autonomous structure. I designed and operated payment gateway architecture for real-money transaction flows, built and maintained an observability stack using OpenTelemetry, Prometheus, Grafana, Loki, and Tempo, and partnered on AWS ECS containerized deployments with production runbook culture. Earlier, I grew from intern to technical lead over 11 years by building business platforms and standing up backend systems for arbitrage trading, real-time sports data pipelines, and blockchain/NFT platforms—plus modernized legacy payment gateway components under tight deadlines.
Experience
Work history, roles, and key accomplishments
Technical Lead
Withpay / Paystation
Dec 2023 - Mar 2026 (2 years 3 months)
Partnered with the CTO to plan, architect, and evolve the company’s technical strategy and stack. Led a backend team of 4–5 engineers, designed a payment gateway for real-money transaction flows, and built an end-to-end observability stack using OpenTelemetry, Prometheus, Grafana, Loki, and Tempo.
Backend Engineer / Tech Lead
SquareOne
Nov 2012 - Dec 2023 (11 years 1 month)
Built and evolved full-stack business platforms (POS systems, inventory management, scheduling SaaS, and customer notification pipelines) across F&B, hospitality, and sports. Led backend architecture for arbitrage trading, real-time sports data pipelines, and blockchain/NFT platforms, and replaced a legacy payment gateway under a tight deadline to restore PG compliance for a fintech acquisition.
Education
Degrees, certifications, and relevant coursework
Korea Aerospace University
Computer Science
1999 - 2006
Studied Computer Science at Korea Aerospace University from 1999 to 2006 without completing the program.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Social media
Job categories
Skills
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