Senior Fullstack Engineer

Toronto💼 Full-time🗓 2026-09-18 → 2026-09-25

Core

Senior Fullstack Engineer owning end-to-end product areas from discovery to production release for a consumer finance platform.

Role type

Senior Fullstack Engineer (FinTech)

Builds

React Native mobile apps, TypeScript/Node.js serverless backends, and internal CX tools

Domain

Consumer Finance / FinTech

Deliverable

production ML models | product features

Required skills

TypeScript, Node.js, React/React Native, AWS serverless (Lambda, SQS), REST/GraphQL, CI/CD testing, architectural decision-making, code review, mentoring

Preferred skills

Financial product experience, Infrastructure as Code (Pulumi/Terraform), Mobile release management

Technologies

React Native, TypeScript, Node.js, AWS Lambda, API Gateway, SQS, Jest, RNTL, Detox, Codex, Cursor, Claude Code

Responsibilities

Own full lifecycle of features including discovery, design, implementation, testing, rollout, and monitoring; Make practical architectural decisions about service boundaries and refactoring; Mentor engineers through technical design and code review; Instrument shipped code and maintain stability

Seniority

Senior, hands-on IC with mentorship responsibilities

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About Bree

Bree is a consumer finance platform that brings better, faster, and cheaper financial services to over half the Canadian population who live paycheck to paycheck. We operate in a huge, but overlooked market in a country with the least amount of financial technology innovation in the developed world. Our first act is to become the cheapest and best provider of short-term credit to the 20 million people in Canada who live paycheck to paycheck.