Evan Huang

McLean, VA

• Built Recadero, a Go CLI adopted by 5 production services across 7 repositories to generate required event contracts, cutting boilerplate 38–97% and eliminating QA/PROD schema drift.
• Built a billing-cycle management action for the credit card processing core, covering request handling, ledger updates, and outbound events, with functional and integration tests.
• Designed event-driven card transaction processing with Go, Restate, Lambda, and Kafka, with 15-minute recovery time and recovery point objectives, idempotent processing, and active-active deployment.
• Built preapproval and eligibility flows for a small-business credit card platform serving millions of applicants, contributing to $60M in annualized value and an 18% conversion lift.
• Created crumb, a Go CLI and Claude Code skill that connects Jira, GitHub, git history, and repository search to link requirements with their implementation and tests.
• Shipped automated code-review and Jira-workflow tools that recovered approximately 140 engineering hours annually across a five-engineer team.

San Francisco, CA / McLean, VA (Remote)

• Built a Scala/ZIO verification layer for an internal card transaction ledger, validating 10B+ records with cryptographic hashing and Merkle trees for logarithmic-time verification.
• Developed a Spark/Scala pipeline identifying untracked DynamoDB datasets across 5,300 tables and 400+ teams; designed the PostgreSQL schema and configured AWS IAM, networking, and authenticated access.

Avon Lake, OH

• Launched and operated a cryptocurrency mining platform generating $40K in revenue within two months; built distributed services for customer accounts, GPU telemetry, and remote node management.