AI · Computer Vision · Full-Stack

Collin Jensen
I build AI-powered products that ship.

Self-taught developer with eight live products in production — from computer-vision golf coaching to AI lead generation. I take ideas from prototype to paying users: AI pipelines, payments, mobile builds, and cloud deployment, end to end.

Projects

Eight production apps, all designed, built, and deployed solo.

RedditListen

FOUNDER · AI AUDIO / MOBILE

Turns Reddit threads into podcast-style audio with neural text-to-speech. Multi-voice narration, smart text normalization, curated stations, sleep timer, and shuffle autoplay. Live on the web plus eight shipped Android releases with background playback.

Neural TTS (Kokoro)NLP Preprocessing Firebase FunctionsFirestore Caching Capacitor / Android

GolfCake

FOUNDER · AI / COMPUTER VISION

AI golf-swing analyzer. Upload a swing video and get frame-by-frame biomechanical feedback: 10-phase swing segmentation, pose estimation, fault detection, and personalized coaching generated by an agentic vision model that requests its own visual evidence before scoring.

MediaPipe PoseYOLOv11 Gemini VisionPython / Flask StripeFirebase

UPS Lead Finder

DEVELOPER · AI LEAD GENERATION

B2B lead engine for UPS battery services. Fans out across 10+ live data sources (Places, OpenStreetMap, Wikidata, federal spending, the NPI health registry), then AI-researches and scores every prospect, plots them on an interactive map, and exports to CSV. A built-in Job Finder and Career Search turns the same pipeline toward helping people find work.

AI Lead ScoringMulti-Source Pipeline n8n / DigitalOceanMapLibre GL Firebase Auth

HotHeatMarket

FOUNDER · LIVE DATA / VISUALIZATION

"The Daily Oracle" — a live newspaper written by prediction markets. Pulls the world's most-traded bets from Polymarket in real time and typesets them as tomorrow's front page, with odds, 24-hour volume, and price moves refreshing every minute. Includes treemap and planner views.

Next.js / ReactTypeScript Polymarket APIFramer Motion Tailwind CSS

Homeschool Planner

FOUNDER · LLM PIPELINES

AI lesson-plan generator for homeschooling families. A multi-stage LLM pipeline (architect → sourcer → validator) designs full time-blocked school days, sources real materials from ~20 vetted education platforms, and adapts content to age, reading level, and difficulty.

Multi-Stage LLM PipelineOpenRouter Next.js / ReactTypeScript Firestore

FriendSurvivor

FOUNDER · REAL-TIME 3D / NETWORKING

Multiplayer 3D survival party game: one screen hosts the world, up to eight friends join instantly from their phones as controllers via QR code. Custom WebSocket relay, deterministic procedural world generation, and a mobile-aware Three.js renderer at 60 FPS.

Three.js / WebGLWebSockets Node.js RelayVite Procedural Generation

I Am Going To Read

FOUNDER · SELF-HOSTED PLATFORM

Self-hosted audiobook library platform. Friends and family search for books, request them, and stream instantly — no accounts required. FastAPI backend orchestrating a multi-container Docker stack with automated library management, cover-art lookup, and audio merging via ffmpeg.

Python / FastAPIDocker Compose DigitalOceanCaddy / TLS ffmpeg

StepUPs Flashcards

DEVELOPER · AI TRAINING TOOLS

Spaced-repetition study app for UPS battery technicians. Python scripts extract a 500-card deck straight from Word-doc training manuals; cards are graded on a five-level confidence scale that re-queues weak cards sooner, and every answer is read aloud with OpenAI neural text-to-speech.

Doc-to-Deck ExtractionOpenAI TTS React 19 / ViteTypeScript Spaced Repetition

Skills

Everything below is in production in at least one of the projects above.

AI & Machine Learning

  • LLM integration (Gemini, GPT, DeepSeek via OpenRouter)
  • Agentic pipelines & tool-calling
  • Computer vision (MediaPipe, YOLO)
  • Neural text-to-speech (Kokoro, OpenAI TTS)
  • Prompt engineering & structured output

Full-Stack Development

  • JavaScript / TypeScript, React, Next.js
  • Python (Flask, FastAPI)
  • Three.js / WebGL, WebSockets
  • Firebase (Auth, Firestore, Functions, Hosting)
  • Capacitor Android builds

Infrastructure & Security

  • Secure API-key handling — server-side proxies & env secrets, never client-exposed
  • TLS reverse proxies (Caddy), SSH-tunneled admin access
  • Stripe webhooks with signature verification
  • Docker Compose, DigitalOcean, GCP
  • GA4 / PostHog analytics, caching & API design

About

I came to software from healthcare and heavy industry — years spent training people, running simulators, and solving problems where the stakes were real. That background shows up in how I build: I care about the user on the other end, I ship complete products rather than demos, and I use AI as a force multiplier at every step. Every project on this page went from idea to deployed, working product — payments, mobile builds, cloud infrastructure and all.

Let's build something.

Looking for a role where I can build AI-powered products. Open to full-time, contract, and collaboration.