Senior Full-Stack Engineer

Posted Yesterday
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Montréal, QC, CAN
Hybrid
160K-170K Annually
Senior level
Fintech • Software • Financial Services • Agriculture
The Role
Own full-stack features across Angular lending applications, Python/FastAPI services, data models, and APIs. Build complex loan origination flows, document collection interfaces, and white-labeled portals. Develop with Pydantic, SQL, Redis, CockroachDB, and async patterns; participate in architecture, code reviews, testing, and cross-functional communication. The role requires strong TypeScript, reactive programming, forms, component architecture, state management, routing, performance, accessibility, and production experience across frontend and backend systems.
Summary Generated by Built In

SweetTech builds AI-native software for agricultural lending: loan origination, white-labeled servicing portals, automated document collection, and a capital marketplace. We are the only modern fintech delivering software to lenders in the agriculture vertical, and within our first year after launch we signed one of the largest independent lender clients and the largest cooperative client in the nation.

We are a seed-stage company (SOC 2 Type II) with a small, senior engineering team. This role is based in our Montreal office.

WHAT YOU'LL DO

This is a genuine full-stack role, and we mean both halves of it. You will own features end to end: the Angular screens a lender actually uses, the FastAPI services behind them, and the data model underneath.

On the backend, you will build and maintain Python/FastAPI services with clean, well-documented APIs, model data with Pydantic and PostgreSQL-compatible SQL, and use Redis for caching and async workloads.

On the frontend, you will build and maintain substantial Angular applications: multi-step loan origination flows, document collection interfaces, and white-labeled portals that our lender clients rebrand as their own.

You will also participate in architecture decisions and code reviews, use AI tools to accelerate coding and testing, and communicate clearly across product, design, and business.

WHAT YOU BRING

7+ years of professional full-stack development, with production experience on both the backend and the frontend of the same product.

Deep Python expertise: FastAPI, Pydantic, async patterns. Strong SQL skills and experience with Redis.

FRONT-END REQUIREMENTS

We are specific about this because it is the half candidates most often overstate. You should be able to walk us through a non-trivial front-end you personally built and shipped.

Strong production experience in either Angular or React. We genuinely run both: Angular 22 on the lending platform, and React with Next.js and Refine on the Agentic Matching Engine. So we are not asking a React engineer to abandon what they know. Most of this role is Angular and our take-home assignment is in Angular, so you should be willing to work in it. Either way, you should be strong in:

TypeScript beyond the basics, including typed API contracts and generics.

Reactive patterns and async data flow, and knowing when not to reach for them. In Angular this is RxJS: observables, operators, and subscription management.

Forms at real complexity: dynamic and nested forms, cross-field validation, and multi-step wizards that hold state cleanly. In Angular that means reactive forms.

Component architecture: reusable, themeable components, smart/presentational separation, and change detection you can reason about.

State management, routing and guards, lazy-loaded modules, and front-end testing.

An eye for performance and accessibility in data-dense interfaces, and the judgment to build UIs a loan officer can move through quickly.

OTHER

Fluent English; French is a strong asset. Clear communicator with technical and non-technical audiences. Experience in fintech or other regulated environments is a plus.

OUR STACK

We run two products. The lending platform is Python and FastAPI with Angular 22 and TypeScript, on CockroachDB and Redis. The Agentic Matching Engine is Next.js 16, React 19 and Refine on a TypeScript services architecture, with CockroachDB and Temporal. Same company, two real codebases, both in production. Developers work in a self-contained local stack plus a cloud workstation, so you spend your time in the product rather than on infrastructure.

THE TEAM

Our Montreal office is small and deliberately senior. You will have real ownership over the platform rather than a narrow slice of it, and direct access to the people making product decisions. The wider team is spread across Boulder, Calgary and Montreal, with core collaboration hours overlapping Mountain Time.

We look for strong work ethic, grit, humbleness, humor, and a genuine interest in the people we build for: farmers and the lenders who serve them.

Skills Required

  • 7+ years of professional full-stack development experience
  • Production experience with both backend and frontend development on the same product
  • Deep Python expertise, including FastAPI, Pydantic, and asynchronous programming patterns
  • Strong SQL skills and experience with Redis
  • Strong production experience with Angular or React
  • Willingness to work primarily in Angular
  • Strong TypeScript skills, including typed API contracts and generics
  • Experience with reactive patterns and asynchronous data flow; Angular RxJS experience
  • Experience building dynamic and nested forms, cross-field validation, and multi-step wizards
  • Experience with reusable, themeable component architecture and smart/presentational separation
  • Experience with state management, routing, guards, lazy-loaded modules, and frontend testing
  • Ability to build performant and accessible data-dense interfaces
  • Fluent English
  • French language proficiency
  • Fintech or regulated-environment experience
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The Company
10 Employees
Year Founded: 2024

What We Do

SweetTech (Sweet Technologies, formerly Landjourney) develops cloud-native, AI-enabled loan-origination and servicing software for agricultural and other commercial lenders. Its platform automates document collection, supports digital servicing portals, and provides capital-markets tools, helping banks improve loan-production efficiency and modernize lending experiences. Founded in Montreal and headquartered in Boulder, the company serves financial institutions working with farmers, agribusinesses, and commercial borrowers.

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