Open to opportunities

Christopher Metzner

@christophermetzner1

Message

I am a Senior Software Engineer specializing in React, Node.js, and AI-driven web applications.

United States

Message

What I'm looking for

I seek a senior engineering role building scalable web and AI-driven products within collaborative agile teams, with opportunities to lead technical projects and mentor engineers.

I am a Senior Software Engineer with 9+ years' experience across the full SDLC, specializing in frontend, backend, and AI-driven systems. I bring 6+ years in modern frontend frameworks, 4+ years in backend architectures, and 2+ years working with generative AI and RAG systems.

I have delivered high-impact products including a dynamic real-time analytics dashboard at Apple, the MASQ blockchain-based web browser, and an enterprise eCommerce upgrade at Newegg. Recently I led a Django-to-FastAPI migration, built an AI-powered compliance chatbot that cut query response times by 70%, and improved API latency by over 30%.

I focus on performance, scalability, test coverage, and developer productivity, and I enjoy mentoring teams, conducting thorough code reviews, and shipping production-ready systems using modern JavaScript, Python, cloud platforms, and RAG/FAISS technologies.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Developer

Intellectyx

Jan 2025 - Jun 2025 (5 months)

Led migration from a monolithic Django app to async FastAPI microservices, improving API response times by over 30% and reducing compliance query response times by 70% via an AI-powered document-aware chatbot.

Python fastAPI React MongoDB Faiss RAG AWS GCP Jest

Senior Full Stack Developer

MASQ

Jul 2021 - Dec 2024 (3 years 5 months)

Designed and built a blockchain-based MASQ web browser with React and Electron, increasing user engagement by 20% and achieving a 90% automated update adoption rate.

React Electron TypeScript Web3.js MongoDB Socket.IO Jest

Frontend Developer

Apple

May 2020 - Apr 2021 (11 months)

Built dynamic D3.js data visualizations and optimized React/Redux frontends, improving performance and maintainability while ensuring robust test coverage with Jest and Enzyme.

React Redux D3.Js Jest Enzyme Performance Optimization

Full Stack Developer

Newegg

Sep 2015 - May 2020 (4 years 8 months)

Upgraded Newegg's e-commerce platform with MERN and Django integrations to enable real-time inventory, personalized recommendations, and a secure checkout, reducing bugs by 40% through testing.

React Django React Native AWS EC2 S3 GraphQL Jest

Web Developer

RealSelf

Mar 2014 - Aug 2015 (1 year 5 months)

Developed and maintained RealSelf's healthcare web platform using Laravel and WordPress, implementing real-time notifications and optimizing MySQL schemas to improve data retrieval and response times by 20%.

Laravel WordPress MySQL PHP JavaScript Git RESTful APIs