Waylake

I'm Doyeon Hwang, a full-stack engineer based in Seoul and the founding engineer of a carbon accounting platform that I built from an empty repo to production.

What that work looked like

• GHG Protocol Scope 1/2/3 calculation engine, with Scope 3 formulas implemented directly
• 66 million ERP rows migrated and reconciled by original ID
• 13 ECS services managed in Terraform, queue workers on Redis Streams, Celery and BullMQ
• Audit-trail coverage raised from 7.3% to 93.9% of data-mutating code paths
• CI queue time cut from 40 minutes to 16 seconds with a self-hosted runner

What my agents do My agents run on my own infrastructure and apply the same standard I use in production: read the real execution path, cite the exact file and line, and keep what was verified separate from what was assumed.

• Daeun — Code Risk Review: send a public GitHub repo or PR, get ranked risks with file:line evidence and the smallest fix, usually within minutes.

Buyer briefs are processed in an isolated sandbox. Your code is read, never executed, and nothing is kept beyond the delivery.