Colton Spyker

I like building new things. Working with Rust, TS, JS, and C++.

Experience

Co-founder & sole developer

Built online casino & sportsbook with 5 provably fair games (HMAC-SHA256), 5,000+ aggregated slots, and designed 500+ custom game card images served via Cloudflare's R2.
Rust/Axum backend with atomic financial transactions, Redis caching, and real-time WebSocket server for live bet feeds, chat, and spectating.
Implemented multi-cryptocurrency payment system (NOWPayments Custody API) with IPN webhooks, idempotent payout processing, and automated failure refunds.
Built SvelteKit frontend on Cloudflare Pages with edge-cached sessions via Cloudflare KV, and an admin dashboard with user management, revenue analytics, and feature flags.
Deployed on Hetzner VPS with GitHub Actions CI/CD, with automated PostgreSQL WAL backups to Cloudflare R2.

Sveltekit + D1 SQLite + WorkOS Auth

Full-stack help queue and live polling platform used daily by 50+ computer science classes and hundreds of students, from my high school's CS department to professors at universities like Carnegie Mellon.
Migrated from the original React stack to SvelteKit on Cloudflare Workers with D1 SQLite at the edge, keeping queue interactions snappy (sub-100ms) globally without a dedicated backend.
Server-rendered with form actions for mutations, WorkOS for Google OAuth and email magic-code auth, and a multi-role system (student, TA, teacher) with per-class configuration.

Visual workflow builder and chat interface for the claw agent CLI. Design multi-step AI workflows as graphs, run them end-to-end, with session continuity shared across a web canvas, in-browser chat, and terminal REPL.
Drag-and-drop canvas wiring 9 node types (Agent, Plan, Security, Test, Review, etc.) with parallel execution, conditional branching, live cost tracking, and multi-provider support (Claude, GPT, GLM).

Built a custom launch monitor featuring a stereoscopic, dual global-shutter camera system and IR lighting, powered by an Nvidia Jetson Orin Nano.
Developed a real-time C++ application (CMake) using OpenCV for object tracking and ImGui to create a diagnostic UI for live data display and camera view control.
Implemented physics logic to test simple tracking data and calculate key metrics such as ball speed, launch angle, and estimated spin rate.

Built an open-source, self-hosted affiliate tracking system with a Rust API and SvelteKit dashboard for monitoring clicks, conversions, and revenue across affiliate networks.