Quartermaster AI

Quartermaster AI

Senior Full Stack Developer

Toronto, Ontario · Senior

Sponsorship not specified$150k-$190kDetected 44 days ago
JavaScriptTypeScriptReactNext.jsReduxwebpackViteNode.jsExpressBackend DevelopmentFull-Stack DevelopmentCode ReviewGitPostgreSQLMySQLMongoDBRedisDynamoDBCloud PlatformsDockerKubernetesCI/CDGitHub ActionsCircleCI

About the role

  • The Senior Full stack Developer is a key contributor responsible for delivering high-quality, scalable software across the frontend and backend.
  • They balance hands-on execution with systems thinking, consistently improving code quality, performance, and developer experience.
  • The ideal candidate pairs deep technical skill with a strong product mindset and a focus on reliability, usability, and long-term maintainability.

Responsibilities

  • We build our property base one street at a time, and our marketplaces one neighbourhood at a time.
  • We start with integrity, neighbourhood values, and competitive craftsmanship, and we build our business on neighbourhood trust.
  • ❤ Integrity - We prioritize integrity over comfort, convenience, and the short-cuts of success that drive metrics but undermine trust.
  • Architect and implement scalable, maintainable, and observable fullstack applications using modern JavaScript/TypeScript ecosystems (React, Next.js, Node.js, Express/Koa, NestJS)
  • Design and optimize relational (PostgreSQL, MySQL) and non-relational (MongoDB, DynamoDB, Redis) data models to support transactional consistency, efficient querying, and multi-tenancy
  • Build robust API layers (REST/GraphQL/gRPC), incorporating input validation, rate limiting, auth middleware, pagination, and real-time event streaming via WebSockets or SSE

Requirements

  • Candidates should have 6+ years of fullstack experience, with 2+ years leading technical projects or teams.
  • They must be fluent in JavaScript or TypeScript, with strong proficiency in React and backend development using Node.js or similar.
  • Familiarity with accessibility standards, performance optimization, and secure coding practices is expected.
  • We expect a high degree of ownership from each other and we pair that with higher than usual employee ownership in the company.

Compensation

  • $150,000 - $190,000

Benefits

  • We offer 30 days of PTO annually, which can be used for vacation, personal days, or illness.
  • In addition, our benefits plan covers health, dental and wellness to add that extra pep in our step, and help us sleep at night.
  • We have a tech allowance benefit to help set you up for work.
  • We have pregnancy and parental leave policies, and we're ready to support your family's next stage of growth.
  • Construct flexible state management patterns (Redux Toolkit, Zustand, React Query) across web applications for efficient data hydration, caching, and optimistic UI

Company info

  • We're building Toronto's dedicated platform for home management to empower the city's homeowners and to better connect our neighbours and the local Pros they trust.
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This listing is sourced directly from Quartermaster AI's careers page and normalized into a canonical job model.