Mike Hall
Staff Software Engineer
- Location Chicago, IL
- Email mike@just3ws.com
- Web just3ws.com
- LinkedIn linkedin.com/in/just3ws/
- GitHub github.com/just3ws
Role & Career Context
Detailed experience breakdown, architectural achievements, and related archival artifacts.
Senior Software Developer
Owned enterprise assessment workflows, leading correctness and platform security in a high-concurrency environment.
- Assessment Query Optimization: Optimized complex PostgreSQL calculations across high-stakes exam scoring engines, eliminating calculation drift and reducing query latency.
- JWT Response Verification: Implemented JWT-based cryptographic payload signing and once-only processing, securing exam submission pipelines against client-side tampering.
- Secure Embedded Client APIs: Designed secure cross-origin API boundaries for embedded enterprise assessment clients, establishing explicit authentication and trust contracts.
Skills: Ruby, Ruby on Rails, PostgreSQL, JWT Authentication, Backend System Architecture, Secure API Design, Database Performance Optimization, Observability and Logging