Jun Jeong
Platteville, Wisconsin, United States
Summary
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SeniorJun Jeong is a Principal Software Engineer based in San Francisco with over eight years of experience building and operating high-throughput web and payment systems. He combines deep back-end expertise in PHP, Go, Python and MySQL with front-end skills in JavaScript/React to deliver end-to-end solutions, from REST/gRPC APIs and ETL pipelines to internationalized UIs supporting 40+ languages and 60+ currencies. At Mastercard he architects PCI-compliant integrations with major payment gateways and digital wallets, and applies cloud services (AWS S3, KMS, CloudHSM) to secure sensitive PII workflows. Known for pragmatic database modeling and SQL performance tuning, he has led development across startups and consultancies, migrating legacy systems and scaling multi-master replication setups. Collected experience in diverse stacks (C, C#, .NET, Oracle PL/SQL) and a data-warehouse master’s give him a rare blend of systems-level rigor and product-focused delivery.
9 years of coding experience
Github Skills (1)
ooad8
Github contributions (5)
junsujeong/junsujeong.github.io
Sep 2017 - Sep 2019
Contributions:26 pushes, 1 branch in 1 year 11 months
junsujeong/Raspberry-Pi-LED-Control
Sep 2017 - Sep 2017
Contributions:4 pushes, 1 branch in 1 day
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