Senior Full Stack AI Engineer (Ontario)

Senior Full Stack AI Engineer (Ontario)

30 Aug
|
Syndesus
|
Ontario

30 Aug

Syndesus

Ontario

A pre-seed AI platform (with some serious backers) rebuilding how legacy financial services businesses run their operations. The product replaces complex, manual back-office workflows - the kind that live in spreadsheets only one person understands, or in the heads of people who've been doing the same thing for a decade - with a team of AI agents that have memory, check each other's work, and log every decision with full audit lineage. Early customers have seen workflows that used to take hours every morning reduced to minutes of verification, deployed in under two weeks. Net expansion is running at 5.7x against a SaaS industry norm near 1.2x. Backed by institutional pre-seed investors and senior fintech operators with multiple successful exits, and building toward a seed round with significant signed pipeline already waiting on engineering capacity.

Why This Role Exists
Signed customers are waiting on engineering capacity. Most of the product is still unbuilt - the pre-seed phase was deliberately manual, and the work now is turning that into a real platform. Whoever joins will own primitives that stay in the product for the life of the company.

What You'll Work On
Ship agents into production for signed fintech customers, working directly with their operations teams
Build the memory and decision layer that lets each agent start smarter than the last
Make architectural calls on a codebase that barely exists yet,



and own how those decisions hold up at scale
Solve novel problems - e.g. how agents share relevant context without exposing data they aren't cleared to see
Turn manual pre-seed processes into productized systems

Must-Haves
8+ years of skilled software engineering experience with real full-stack depth
Startup experience at your current or immediately previous company (up to Series C)
Track record of architectural decisions that shaped a product - not just executing well-defined tickets
Comfortable building from near-zero with evolving requirements and frequent pivots
Willing to work in TypeScript and Node.js (current stack irrelevant; ramping is non-negotiable)

What They're Looking For
Obsessive about craft and intellectual curiosity about engineering
High ownership - cares whether the business succeeds and makes decisions accordingly
2+ years at each company with the results of your own decisions visible
Joined a company early and grew into real responsibility
Thrives in ambiguity, chaos, and the absence of a spec
CA$180,000-250,000 base + equity
Commuting costs covered
Lunch provided on office days
Unlimited PTO

Interview Process
Co-Founder interview
Systems design interview with an engineer
Take-home exercise (practical/product work related)

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📌 Senior Full Stack AI Engineer (Ontario)
🏢 Syndesus
📍 Ontario

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