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Laurence Oh

@laurenceoh

Technical Lead backend engineer building distributed, observable systems.

South Korea
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What I'm looking for

I’m looking to lead backend architecture for high-throughput distributed systems—owning design through production observability—while building reliable payment or real-time data platforms with a maintainable, operationally clear engineering culture.

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

WP

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.

SQ

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 logoKU

Korea Aerospace University

Computer Science

1999 - 2006

Studied Computer Science at Korea Aerospace University from 1999 to 2006 without completing the program.

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