Hi there, my name is

Justin Marsh.

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Available for opportunities

About Me

I enjoy creating things that live on the internet! My formal background is in mechanical design and my interest in web development started back in 2020 when I built my first web application — for a passion of mine, Argentine Tango.

Fast-forward to today, and I've had the privilege of working at Nerdgeschoss and building software for diverse clients. My main focus these days is creating beautiful interfaces to solve problems that benefit my community.

Justin Marsh

Technology

I believe in choosing the right tool for the job, not the newest or most popular one. My approach is to prioritize developer experience, maintainability, and user performance. I prefer proven technologies that enable rapid iteration and long-term stability.

Experience

Senior Software Engineer @ GAIA

Sep 2025 - Present

  • Leading development of AI-powered contract analysis platform built with Ruby on Rails
  • Building scalable systems for automated contract review, risk analysis, and legal document processing
  • Implementing professional-grade AI features for contract redlining and intelligent data extraction
  • Developing seamless integrations with legal workflow tools and existing legal technology stacks

Featured Projects

These are projects where I was the lead developer and were built from the ground up.

Featured Project

Anymator

A video greeting card website built from the ground up. Features a custom Blender server for rendering personalized video/picture cards with user-provided text and images. Built entirely with Hotwire and Stimulus!

Ruby on RailsHotwireStimulusBlender
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Featured Project

TangoCloud

A progressive web app for organizing and discovering tango events. Fast, reliable, and mobile-friendly. Built for the global tango community.

Ruby on RailsHotwireStimulusFaceted SearchRecommendation AlgorithmsProgressive Web App
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Featured Project

TangoTube

A modern media streaming platform for tango dancers. Built with Ruby on Rails, React, and HLS streaming. Designed for high interactivity and seamless performance.

Ruby on RailsHotwireStimulusProgressive Web ApplicationPhlexHLS StreamingAudio VisualizationData EnrichmentAudio Recognition
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What's Next?

Get in Touch

Interested to work together? Or do you just want to meet and have a virtual coffee?

I love meeting new people. Let's chat!