Financial Integration Service (Troutwood)

Jan 1, 2026 · 1 min read
projects

Serverless payroll-data ingestion platform on AWS (Lambda, SQS, DynamoDB, CDK), built as a CMU MSE Studio project for Troutwood. I built the end-to-end delivery platform for the serverless monorepo: 14 of 17 GitHub Actions CI/CD workflows (6 authored solo), the foundational AWS CDK stacks in Python, and LocalStack-based integration tests that run on every pull request.

Delivery platform

  • Designed parallel CI, gated dev auto-deploys, approval-guarded prod deploys, and per-branch ephemeral test stacks
  • Authored the foundational AWS CDK stacks in Python and LocalStack-based integration tests run on every pull request
  • Migrated pipeline AWS authentication to GitHub OIDC, eliminating long-lived access keys
  • Introduced gitleaks secret scanning and Python/Go coverage reporting as merge gates

AI agent engineering

The team runs a 24-skill AI agent engineering framework on Claude Code and Codex, with runtime quality hooks and a review-learning loop that distills real PR feedback into enforced coding patterns. Within it, I built the architecture-decision-record skills and the context-management standard that define how agents record decisions and load project context, and ran a cross-team knowledge-sharing session.

AWS CI/CD GitHub Actions
Yoonmee Hwang
Authors
Yoonmee Hwang (she/her)
DevOps / MLOps Engineer
DevOps and Site Reliability Engineer with 5 years operating Kubernetes at cloud-provider scale at NHN Cloud, a top-3 cloud service provider in South Korea. Currently a Master of Software Engineering student at Carnegie Mellon University, building CI/CD platforms and ML experimentation infrastructure.