Senior Founding Engineer - Backend

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AI Startup · Toronto, Canada (In-Person downtown Toronto)

About Us

We're solving one of the largest problems in the physical world: housing that's too slow and too expensive to build. The $2 trillion construction industry runs on human expertise that doesn't scale - so we're building the AI that understands what to build and how to build it.
We start with the costliest problems for general contractors - the multi-million-dollar decisions that Claude cannot solve. Tyce Agent wins more projects and estimates costs on multi-million-dollar builds live at one of the landmark construction companies today.

We just closed a 7-figure round and are hiring to build the best AI platform for construction.

What You'll Do

You'll own the backbone: the APIs, data model, integrations, and systems that everything else stands on. A true generalist who's happiest owning a problem end-to-end.

• Build core backend systems in FastAPI + PostgreSQL - APIs, data model, auth, org/permissions.

• Handle the but critical parts: security, multi-tenancy, reliability, observability.

• Drop into the frontend (React / TypeScript) whenever the product needs it.

• Ship new features day-to-day alongside the founders and make real architectural decisions.
We're on a modern, lean stack: React Router framework, TypeScript, FastAPI, PostgreSQL, Pydantic-AI, Logfire, AWS.

Required Qualifications

• Mid-to-senior level of engineering experience.

• Expert in Python; strong in TypeScript / React.

• Have shipped and maintained real backend systems in production.

• Go-getter mindset, personal agency, fast learner, excellent verbal and writing skills.

• Full-time, in-person downtown Toronto

Nice-to-have Qualifications

Having any of these is a strong plus — tell us your superpower:

• Built B2B apps with security, authentication, org structure, and third-party integrations.

• AWS experience.

• Built integrations with APIs like Google Drive, Sharepoint, etc...

• Worked with AI agents and understand the plumbing around LLMs.

• Product sense and general design thinking.

• Competitive programmer (e.g. ACM ICPC).

What We Offer

• Competitive salary plus meaningful equity in an early-stage company.

• A founding-level seat on a 10-person product engineering team with direct influence over architecture and product direction.

• A close-knit and collaborative early-stage startup environment where every voice is heard and every opinion matters

• Learning & Growth stipend

Check us out at https://www.tyce.ai/