Mike Hall
Principal Software Engineer
- Location Chicago, IL
- Email mike@just3ws.com
- Phone (847) 877-3825
- 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 core system testability and performance at scale, leading legacy modernization in a highly coupled CRM platform.
- Legacy Boundary Isolation: Decoupled critical legacy constraints behind explicit service boundaries, eliminating high-risk direct database dependencies and establishing clean execution paths.
- Data Access & Query Optimization: Replaced ad-hoc global state access with structured query patterns and multi-tier caching strategies, accelerating throughput for high-volume database reads.
- Frontend Test Hardening: Hardened the Ember.js frontend test suite across complex CRM user workflows, enforcing testable state boundaries and reducing regressions in customer-facing flows.
- Test-Driven Observability: Established test-driven observability patterns across legacy PHP codepaths, shortening developer feedback loops during high-risk production debugging.
Skills: PHP, MySQL, Ember.js, JavaScript, Legacy System Modernization, Backend System Architecture, Automated Testing, Performance Optimization