Gabe Upton
AI systems, full-stack apps, and engineering tools. Solo.
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Built 130+ engineering calculators spanning 13 disciplines — process, pipeline, mechanical, civil, electrical, instrumentation, safety, operations, rotating equipment, tanks, utility, piping, and general.
Originally deployed as an internal tool with a hosted dashboard for a midstream oil and gas operator. Now rebuilt as interactive web calculators in Catalyst OS, running client-side with React and TypeScript.
Each calculator features validated inputs with unit handling, real-time computation, results export, and responsive design. Includes financial tools (debt payoff, FIRE number), health tools (TDEE, sleep debt, burnout risk), and engineering tools (pipe flow, heat transfer).
Tech: React 19, TypeScript, Tailwind CSS. No backend calls — all math runs locally in the browser.
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Built an AI coaching system called The Mirror — a context-aware assistant that learns about each user and delivers personalized insights across 5 life dimensions.
Features 5 chat modes (Chat, Guided, Deep, Research, Insight), each with specialized prompts and behavior. Guided Intake builds a user profile through conversation, tracking understanding across key life areas. All responses grounded in a RAG knowledge base via pgvector semantic search.
The research pipeline generates 6 evidence-based documents daily via Claude and ingests peer-reviewed papers from PubMed weekly — automatically chunked, embedded, and stored for retrieval.
Tech: Next.js 15, Claude API, Supabase (pgvector + RLS), OpenAI embeddings, n8n. Shipped as a core feature of Catalyst OS with Supabase Auth and Stripe-gated Pro access.
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Built a 21-workflow automation system in n8n handling the full content lifecycle: trend scanning, AI generation, multi-platform publishing, performance analytics, and self-optimization.
Includes daily Reddit and PubMed trend scanning, AI content generation via Claude, multi-platform publishing through Blotato, metrics collection and performance analysis, and a RAG research pipeline that ingests PubMed papers and generates evidence-based documents for the knowledge base.
Also built an AI email triage system — Gmail and Outlook classified every 5 min by Claude, routed by priority, with auto-responses and daily digest to Telegram.
Tech: n8n, Claude Sonnet 4, OpenAI embeddings, Supabase (PostgreSQL + pgvector), Telegram Bot API, PubMed E-utilities. Total cost: ~$14/month.
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Built Catalyst OS solo — a full-stack SaaS platform for life optimization, from architecture to deployment.
The platform includes 106+ interactive calculators across 13 engineering disciplines, 225+ structured learning modules with XP-based progression across 5 life dimensions, a 188+ article resource library with multi-axis filtering and full-text search, and an AI coaching system powered by Claude API with RAG, pgvector semantic search, and 5 distinct chat modes.
Tech: Next.js 15, React 19, TypeScript, Tailwind CSS, Supabase (PostgreSQL + pgvector + Auth + RLS), Stripe subscriptions, Vercel deployment.
This isn't a template or tutorial project. It's a shipped product handling real users and payments at catalystproject.ai (http://catalystproject.ai).
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