Jaeyoung Heo is a backend team leader with 10 years of experience designing and running core banking and fintech platforms at Seoul-based 8PERCENT, where his work supported roughly threefold revenue growth. He specializes in re-architecting payment and repayment systems, automating accounting and ERP integrations, and turning complex loan and investor payout processes into reliable, testable services. As a pragmatic engineering lead he introduced Dockerized local development, pre-commit/black formatting, Jira and story points to cut friction and improve delivery predictability. He has deep operational chops—AMI/Ansible automation, Celery tuning, partitioned schemas and slow-query optimization—combined with a taste for library-first code organization and style guides. Interested in open source and in organizing unstructured work, he pairs hands-on implementation with process improvements and regular one-on-ones to grow team capability.
Contributions:4 reviews, 18 commits, 18 PRs in 2 years 1 month
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