Jaehoon Lee
Engineering at JPMorgan Chase & Co.
- Role
- Technical Lead, Staff at JPMorganChase
- Location
- Bellevue, WA, US
- LinkedIn followers
- 500 followers
About Jaehoon Lee
Experienced Software Engineer with a demonstrated history of working in the information technology and services industry. Skilled in Building Scalable/Fault-tolerant/Distributed Backend System. Strong engineering professional with a Master of Science (MS) focused in Computer Science from Georgia Institute of Technology.
Experience
Technical Lead, Staff
Jan 2023 — Present · Seattle, WA, US
Technical lead and founding engineer for the Checkout platform, designing the MVP and core architecture, including BFF (Backend-for-Frontend) design, idempotent payment flows, and platform-wide API and error-code standards.Scaled the Checkout organization from early inception by defining team boundaries across Commerce Core, Payments, Identity, and Data; interviewed and hired early engineers while providing hands-on technical mentorship and design guidance to junior ICs.Led backend launch of Hosted Field in partnership with 4 cross-functional teams, delivering PCI/PII-compliant checkout with verification, authorization, and tokenization; standardized APIs across teams and drove adoption that increased monthly revenue by nearly 50%.Modernized a legacy session API into RESTful, payment-type–scoped endpoints, streamlining checkout data encryption and cutting onboarding from weeks to days while reducing support tickets by ~75%.Designed and owned the billing data platform, including a Temporal-orchestrated billing ETL and billing reconciliation pipeline, aggregating high-volume events and ensuring financial correctness across settlement, reporting and payout flows.
Education
Georgia Institute of Technology
Master of Science (MS), Computer Science
2015 — 2017
Udemy Alumni
Backend & Data Science
2017
Korea Advanced Institute of Science and Technology
Bachelor's degree, Computer Science
2007 — 2015
Skills
- Android
- Software Engineering
- Javascript
- Ios Development
- Node.js
- Mysql
- Hadoop
- Python
- Webgl
- D3.js
- Postgresql
- Css
- Html
- Django
- C++
- C
- Java
- Android Development
- Objective-C
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