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Full-time Remote — US & Canada 6+ yrs

Senior Software Engineer

Build product surface area across FastAPI, React 19 + Vite + TypeScript, and Supabase at Bytown — the AI marketing platform that drafts complete ad campaigns in 5 minutes. Ship end to end. No ticket factory.

About the role

You'll own a product surface at Bytown — onboarding, dashboards, campaign review, billing — and ship it end to end. The stack is FastAPI (Python) on the backend, React 19 + Vite + TypeScript on the frontend, and Supabase for Postgres, auth and storage. We stream agent responses over Server-Sent Events, integrate with Google Ads, Meta, LinkedIn and Reddit APIs, and run a small, focused test suite.

This is not a sit-in-a-sprint-ceremony job. There's no backlog grooming, no Jira status dance, no two-week roadmap. You pick a surface, talk to customers, decide what to ship, ship it, and move on. The founders will push back on scope, not hand you a spec.

What you'll do

  • Build and ship features end to end: API, database, UI, billing, analytics.
  • Own a product surface — onboarding, dashboards, campaign review, or billing.
  • Integrate with Google Ads, Meta, LinkedIn and Reddit APIs via SDKs and REST.
  • Write the code that streams SSE responses from our agents back to the frontend.
  • Cut scope — strong instinct for what not to build.
  • Work directly with customers and the founders. No ticket factory.

What we're looking for

  • 6+ years shipping production software, some of it Python and some of it TypeScript.
  • Comfortable across FastAPI, Postgres/Supabase, React and Vite.
  • Shipped something end to end — not just a feature in a large monolith.
  • Strong product instinct: you push back on the spec, not just implement it.
  • Comfort in a small remote team with few processes.

Nice to have

  • Hands-on with Google Ads, Meta, LinkedIn or Reddit Ads APIs.
  • Experience with SSE / streaming UIs, or LLM-powered products.
  • Side projects we can look at.

What we offer

  • Remote — US & Canada.
  • Competitive comp + meaningful equity.
  • Budget for tools, hardware, and the ad spend you'll need to dogfood the product.
  • Direct access to customers, founders and roadmap.

How to apply

Email [email protected] with a short note: the role, a link to code we can read, and one feature you'd ship first at Bytown. No cover letter theater.

One email. One feature you'd ship.

Send us a short note, a link to code we can read, and the one feature you'd ship first at Bytown. We read every application.

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