Timothy L.

Architected full stack platform services using TypeScript/Node.js (20.x) and React (18.x) to process over 2 billion events daily. Redesigned backend data pipelines and dashboards to achieve high uptime and reduce API latency through optimization techniques. Led the development of a real-time analytics application with React, enabling data-driven engineering decisions. Designed a GraphQL and gRPC integration layer connecting multiple services, minimizing incidents and facilitating independent deployments. Engineered a feature flag system for A/B experimentation at scale, serving millions of users. Built an event-driven notification pipeline with Node.js and AWS services, ensuring reliable processing of notifications. Revamped observability infrastructure, implementing tracing and structured logging across services, leading to reduced incident response times. Conducted a migration of a large PostgreSQL database to an optimized schema, ensuring data integrity throughout the process. Enhanced frontend performance through various optimization strategies, achieving significant improvements in web performance metrics. Streamlined CI/CD pipelines using GitHub Actions, substantially reducing pipeline run times. Established comprehensive API security standards, successfully passing audits without critical findings. Managed 24/7 on-call duties, addressing numerous production incidents and implementing fixes to reduce alert volume. Mentored engineers through coaching and guidance, supporting their career advancement. Collaborated with teams to design feature store APIs and model serving interfaces for ML integration.

Developed a full stack HIPAA-compliant telehealth platform, scaling patient capacity significantly while maintaining service integrity. Created and optimized patient management features with React and TypeScript, which improved development cycle efficiency and accessibility. Designed a secure REST API backend compliant with HIPAA regulations, ensuring audit readiness and facilitating partnerships with health systems. Enhanced Node.js API performance through query optimization to improve clinical throughput during peak usage. Built a messaging and notification system that reliably processed large volumes of messages. Integrated automation features for patient engagement, contributing positively to retention rates. Developed infrastructure for A/B testing that allowed multiple product experiments to be run concurrently without delays. Expanded the testing suite substantially, resulting in reduced defect rates post-release. Mentored engineers in compliance-oriented development practices during a period of rapid team growth.

Architected backend services and internal tools to support enterprise operations, improving pipeline reliability and SLA adherence across business units. Developed React and TypeScript internal tools that reduced support ticket volume and enhanced workflow management for engineers. Established CI/CD standards for deployment practices, significantly decreasing release cycle times. Increased test coverage systematically through refactoring and integration testing, leading to quicker resolution times and reduced production incidents. Standardized Docker environments across engineering teams to streamline onboarding and resolve inconsistencies. Collaborated in architecture design reviews and contributed to shared UI libraries to facilitate feature delivery and maintain UX standards.

Designed and delivered multiple full stack web and mobile applications across various industries including EdTech and healthcare using Python/Django and React. Developed REST API backends enhancing data retrieval speeds through optimization strategies. Created a HIPAA-compliant module for appointment scheduling, which facilitated client contract renewals. Introduced reusable component architecture and API client libraries, improving code efficiency and reducing development time.