Senior Fullstack Engineer at Bree in Toronto

Job description

• Application
• We are looking for a Senior Fullstack Engineer to own important product areas from the initial customer problem through production release.
• This is not a role where Product defines every requirement and Engineering takes over at implementation. You will work directly with Product, Design, CX, Operations, and other engineers to understand the problem, shape the solution, make technical decisions, and own the outcome after release.
• A project might involve designing a new React Native experience, updating eligibility and product rules, introducing new APIs and database models, integrating with a payment provider, building internal tools for CX, and monitoring how the feature performs in production.
• You will join a small engineering team working on a product with large scale, and with direct consequences for customers’ access to money. Some parts of our system are modern and well understood. Others reflect the pragmatic decisions of a fast-growing startup and need thoughtful modernization.
• Your job is to help us continue moving quickly while making the product easier to understand, safer to change, and more reliable for our customers.

Responsibilities

• The full lifecycle of a feature, including discovery, technical design, implementation, testing, rollout, monitoring, and follow-up
• Work across our TypeScript and Node.js serverless backend, including Lambda, API Gateway, and SQS, as well as our React Native application
• Make practical architectural decisions about service boundaries, data ownership, and when to refactor versus extend an existing system.
• Instrument what you ship and hold the line on stability without slowing releases.
• Use tools such as Codex, Cursor and Claude Code to move faster while remaining responsible for correctness, testing, and quality.
• Mentor other engineers through technical design, code review, and cross-stack collaboration.

Requirements

• Proven experience shipping customer-facing products end to end, with meaningful technical and architectural ownership.
• An AI-native development approach: you use tools such as Claude Code and Cursor throughout planning, implementation, debugging, testing, and review, while applying the judgement needed to validate and own the result.
• Expert-level TypeScript; fluent in Node, React/React Native, REST/GraphQL.
• Real AWS serverless experience (Lambda, SQS) or equivalent event-driven systems.
• Track record refactoring or modernizing existing systems, not just greenfield.
• Pragmatic testing (Jest, RNTL, Detox) wired into CI.
• Strong product judgment and clear, even-keeled communication.
• Experience building financial products, payment systems, or other regulated software.
• Infrastructure as Code experience with Pulumi or Terraform.
• Mobile release experience, including TestFlight, Google Play, or over-the-air updates.

Skills

Required

• TypeScript
• Node
• React/React Native
• REST/GraphQL
• AWS serverless (Lambda, SQS)
• Jest
• RNTL
• Detox
• CI

Preferred

• Financial products
• Payment systems
• Regulated software
• Pulumi
• Terraform
• TestFlight
• Google Play
• Over-the-air updates

Benefits

• 💰 Top of the market compensation for top performers
• ⚕️ Comprehensive health, dental, and vision benefits plan
• 🖥 $1,500 annual learning & home-office stipend
• 🧘🏼 $1,000 annual wellness stipend
• 🍔 Monthly Lunch Stipend
• 🚗 Commuter Benefits
• 🚼 Paid Parental leave
• 🏝 20 annual PTO days + unlimited sick days
• 🚀 Quarterly Team Gatherings
• ☕ In Office Amenities