Open to opportunities

Michael Hagar

@michaelhagar

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Senior Full-Stack Engineer specializing in TypeScript/React with strong Python and Node back-end expertise.

United States

Message

What I'm looking for

I seek roles where I can build accessible, high-performance UIs and reliable back ends, lead design systems, and improve observability and safety for product teams.

I am a Senior Full-Stack Engineer focused on building fast, accessible UIs and robust back ends using TypeScript/React, Python, and Node. I've led design system and UI architecture, shipped edge-rendered product and search experiences, and implemented observability to measure and sustain performance and safety wins.

My background includes developing evaluation dashboards, red-team tooling, and scalable event-driven systems at companies from startups to enterprise. I prioritize accessibility, schema-driven APIs, and reliability (idempotent webhooks, retries, dead-letter queues) to help product and brand teams move quickly and confidently.

Experience

Work history, roles, and key accomplishments

Senior Full-Stack Engineer

Envive AI

Mar 2024 - Nov 2025 (1 year 8 months)

Led design system and UI architecture with React and TypeScript, improved LCP and TTI by 15% via edge-rendered Next.js and prefetching, and built FastAPI/Node APIs with schema validation, rate-limited webhooks, and response redaction.

React TypeScript Next.js fastAPI Node Storybook Observability

Senior Software Engineer

Scale AI

Aug 2021 - Mar 2024 (2 years 7 months)

Owned evaluation UIs and tooling that reduced P95 render time by 20% and per-task review time by 8%, and implemented Python workers, retry/dead-letter queues, and dataset ACLs for reliable evaluation pipelines.

React Python RLHF Tooling Signed URLs Data Lineage Performance Optimization

Senior Software Engineer

Tubular Labs

Sep 2017 - Jul 2021 (3 years 10 months)

Built audience and content analytics UIs with high-cardinality data grids and virtualization to keep interactions under 200ms, added export/webhook flows and in-product runbooks that reduced support load.

React Virtualization Data Visualization Webhooks Performance Optimization

Software Engineer

Amazon Web Services, Inc

May 2015 - Jul 2017 (2 years 2 months)

Shipped reference front ends and serverless sample apps using React, Next.js, Lambda, and Step Functions, and implemented idempotent processors with DynamoDB plus observability via CloudWatch and tracing.