Mike Hall

Owned architecture, production stability, and delivery execution for a revenue-critical customer acquisition platform in a regulated financial environment, leading cross-team modernization of a legacy Rails system under continuous load.

• Fragmented ownership and unclear system boundaries were resolved by reconstructing end-to-end execution flows and establishing a unified execution model, enabling coordinated cross-team delivery and reducing production debugging time.
• Extended downtime during high-severity production incidents was minimized by serving as the technical escalation point and leading cross-team diagnosis, restoring service quickly and standardizing incident response under real production conditions.
• Data integrity failures in the revenue funnel were eliminated by re-architecting multi-step Rails workflows and state handling, enabling safe platform upgrades while maintaining uninterrupted production operation.
• Coordination gaps between product and platform work were reduced by founding the ACQ Enablement function and restructuring team ownership, aligning engineers around modernization efforts without slowing feature delivery.
• Operational blind spots during incident response were eliminated by driving adoption of OpenTelemetry, improving system visibility and enabling reliable cross-system diagnosis.
• Compliance risks around sensitive customer data were mitigated by partnering with enterprise architecture to redesign PII handling, enabling safe data migration and meeting regulatory requirements.
• Friction in adopting AI under corporate security constraints was reduced by introducing local LLM workflows and token optimization tooling, improving developer productivity while maintaining data privacy.

Skills: Platform Architecture, System Resilience, Incident Leadership, Observability, Legacy System Modernization, Distributed Systems, Ruby on Rails, PostgreSQL, OpenTelemetry, AWS