What I build
Web applications from database to frontend in TypeScript and Rust, and services on Cloudflare Workers, Durable Objects, D1 and R2. NixOS on every machine I own, so an environment is a file rather than a memory.
Résumé · Sean Behan
Senior full-stack developer, open to work.
12 years of web applications, from database to frontend. I daily-drive NixOS, write Rust and TypeScript, and build everything in the open — a Wayland compositor, bots on Cloudflare Workers, and a pastebin on R2.
Open to workFull-time · remote, or hybrid in the Greater Toronto Area
Download PDFEmail sean@seanbehan.caPlain text (.txt)LinkedIn (opens in a new tab)GitHub (opens in a new tab)
Working profile
Stack / shipped / method
What has shipped
A paid streaming control plane that takes money and relays live video to five providers. A Telegram bot framework with 324 stars and 120 npm releases. A Wayland compositor that composites a web page zero-copy beside native clients.
How I work
Small systems with explicit failure modes, and write-ups of what broke. The published posts are the clearest evidence I have that I can explain a decision to someone who has to live with it.
The document
Download the PDF →Typeset from the same source as the PDF · updated September 12, 2026
SEAN BEHAN
Senior Full-Stack Developer · TypeScript & Rust
- Greater Toronto Area
- sean@seanbehan.ca
- seanbehan.ca
- www.linkedin.com/in/sean-behan
- github.com/codebam
Senior full-stack and systems developer, open to full-time work — remote, or hybrid in the Greater Toronto Area. I ship serverless bots and web apps on Cloudflare Workers, write Rust for Wayland compositors, and keep my machines reproducible with Nix.
EXPERIENCE
Independent Developer · Open Source
- Built and run Codebam Stream, a paid live-streaming service: OBS WHIP ingest, browser WHEP playback and RTMPS relay to five providers
- Runs it on Cloudflare Workers, Durable Objects, D1 and LiveKit, with prepaid Stripe credit and per-customer reconciliation across 18k lines of tested TypeScript
- Wrote @codebam/cf-workers-telegram-bot, a TypeScript bot framework for Cloudflare Workers (214 forks, 120 npm releases), then moved my own bots off it onto grammY
- Write Rust for Linux userspace across eight public repositories, including a Wayland compositor whose desktop shell is a web page; 273 public repositories overall, on NixOS daily
Frontend Web Developer · AssetDash
- Rebuilt the company site on Next.js, TypeScript and React with a Firebase backend, cutting bounce rate 15% and raising user engagement 20%
Assistant Automation Coordinator · Elections Canada
- Kept polling-station computer systems online through the 2019 federal election alongside a team of 10+
Development Intern · AVROD
- Built a web store with Django and MySQL, as a course placement at the company
IT Student Advisor · Trent University Information Technology
- Diagnosed and repaired student and faculty machines at the library front desk across Windows and macOS
SELECTED WORK
Codebam Stream · Live Streaming Control Plane
- Cloudflare-native control plane for multistreaming, with a Durable Object per provider relay owning that relay’s lifecycle
- Two channels of prepaid credit — destination-hours and browser viewer-hours — allocated FIFO in D1 and reconciled per customer as usage accrues, with durable refund handling
- Publisher epochs, relay generations and resource-bound capabilities fence every path, so a stale relay can never attach to a replacement broadcast
Tux Robot · Telegram Bot on Cloudflare Workers
- AI chat bot built on grammY in TypeScript on a single Cloudflare Worker, with a Svelte 5 web app, Cloudflare AI, Tavily search and document retrieval; live at t.me/TuxRobot
Viewport · Wayland Compositor
- Compositor in Rust on Smithay where the whole shell — wallpaper, dock, window frames and titlebars — is a web page, behind five interchangeable engine backends: WPE, WebKitGTK, Chromium, CEF and Servo, with the same shell page under each
- Zero-copy path from engine to screen: DMA-BUF frames, drm_syncobj fences and real vblank pacing, so no pixel is copied through the CPU
- Tiling is a tree of CSS flexboxes, so the browser computes every window rectangle and the shell only measures the result; packaged in a Nix flake that builds WPE WebKit from source
Pastebin-R2 · Serverless Snippet Service
- Pastebin on Cloudflare Workers in TypeScript with Hono, storing objects in R2 behind a small REST API — create, update, list, info, delete — with syntax-highlighted and plain-text views
- Pastes carry a TTL in R2 custom metadata, enforced on every read and swept by an hourly cron trigger; web UI, Nix flake for dev and build, live at paste.codebam.ca
SKILLS
LANGUAGES
Expert: TypeScript & JavaScript · Rust · Python · Nix · Shell
Proficient: C · Lua · SQL · Java · HTML & CSS
PLATFORMS AND FRAMEWORKS
Web: React & Next.js · Svelte 5 & Astro · Hono · Web Extension API · WHIP, WHEP & RTMPS
Systems: Wayland & Smithay · Linux (12 years) · Nix & NixOS · Docker & Podman
Cloud: Cloudflare Workers & Pages · Durable Objects & D1 · R2 & KV storage · LiveKit · Stripe billing
EDUCATION
Trent University
- Coursework toward an Honours B.Sc. in Computer Science
AWARDS AND CERTIFICATES
- Overleaf Most Interesting Talk, Trent Mathematics and Statistics Conference 2019
- Project Management Award, Electric City Hacks Hackathon 2016
- Ontario Worker Health and Safety Awareness Certificate
- AWS Educate Application Developer Certification
EXTRA CURRICULAR
Sysadmin and Moderator · mstdn.ca
- Run a Mastodon instance: upgrades, federation troubleshooting and moderation across the Fediverse
President · Trent Computer Science Society
- Led the society’s speaker series and socials for the CS cohort
Founder and President · Trent Innovate
- Founded a campus innovation group and ran its executive team
Director · Electric City Hacks
- Went from participant to volunteer to organizer to director of the hackathon over four years
INTERESTS
Serverless and edge runtimes · Compositors and windowing · Declarative builds with Nix · Linux kernel development · Applied AI