Zachary Legros

Key Highlights

• Accelerated full-stack development with Claude Code and custom MCP servers (Atlassian, Figma): charting migration, encryption implementation, 100+ case triages, and daily debugging workflows.
• Reduced base Tonic UI open-source bundle by 92% (752KB → 61KB) via Vite build optimization, tree-shaking, and modularization.
• Architected frontend (React, TypeScript, Zustand, React Query) and backend APIs (NestJS, Node.js) for Correlated Intelligence: AI-powered threat detection with custom signal conditions and anomaly detection.
• Championed professional development and technical onboarding for a University of Waterloo intern; mentored on full-stack architecture, NestJS API design, and systematic troubleshooting within complex production environments.
• Led AI-powered migration from HighCharts to ECharts for Cloud Email and Collaboration Protection, leveraging automated refactors to accelerate delivery.
• Triaged 100+ technical support cases using Splunk log analysis, ElasticSearch/Kibana debugging, and MySQL/T-SQL queries.
• Developed Closed-loop Feedback frontend and REST APIs: auto-remediation workflows, quarantine mitigation, and secure email rendering using DOMPurify.
• Optimized risk metrics service (Node.js) with Azure Service Bus queue system, request timeouts, connection pooling, and Grafana monitoring for improved reliability.
• Developed Email Banner frontend (React) and backend APIs (NestJS, T-SQL stored procedures) with multi-language template support and i18n integration.
• Orchestrated a mission-critical encryption migration for secrets; utilized AI-driven architectural planning to deliver a seamless, opt-in transition with zero service disruption.
• Deployed features via Docker, Kubernetes, GitHub Actions CI/CD pipelines across 25+ repositories.