Développeur full-stack senior.

Accountabilities

• Develop and maintain Shopify storefronts, custom applications, point-of-sale extensions, user interface extensions, and Shopify Functions.

• Build and support internal web applications for product appraisal, pricing, event management, and retail operations.

• Design, implement, and maintain integrations between Shopify, Oracle NetSuite, product catalogues, search infrastructure, and other business systems.

• Create and maintain data pipelines and utilities that ensure reliable flows of pricing, inventory, and product catalogue information.

• Take ownership of existing applications developed by external agencies and contractors, assessing their architecture and identifying opportunities for improvement.

• Investigate unfamiliar codebases, troubleshoot production incidents, and implement practical, maintainable solutions.

• Audit, document, consolidate, and modernize existing applications and integrations.

• Make architectural and implementation decisions that balance performance, maintainability, technical complexity, and business priorities.

• Collaborate directly with internal stakeholders to understand operational challenges and translate business needs into effective technical solutions.

• Establish pragmatic standards for software development, testing, documentation, deployment, and code quality as internal engineering capabilities grow.

Requirements

• At least five years of professional software development experience, including senior-level ownership of production systems.

• Strong TypeScript and JavaScript skills across frontend and backend development.

• Production experience with React and/or Svelte/SvelteKit.

• Backend development experience with Node.js using Express, Fastify, or comparable frameworks.

• Hands-on Shopify development experience, including applications, themes, and/or API integrations.

• Experience with PostgreSQL and modern data-access tools such as Prisma or Drizzle.

• Proven ability to build and integrate REST and GraphQL APIs.

• Ability to independently take over unfamiliar codebases, diagnose complex issues, and make sound technical decisions.

• Strong communication skills, including the ability to explain architectural choices and technical trade-offs to non-technical stakeholders.

• Comfort working with high-volume, business-critical e-commerce and retail data.

• Fluency in English for daily collaboration with teams and external partners across Canada, the United States, and Europe.

• Residence in Canada and legal authorization to work in Canada are required.

Additional assets:

• Experience with Shopify Polaris, App Bridge, and the broader Shopify application ecosystem.

• Familiarity with PHP and Laravel.

• Experience with NetSuite SuiteScript or integrations involving other enterprise resource planning (ERP) systems.

• Knowledge of OpenSearch, Elasticsearch, or similar search technologies.

• Experience with product information management (PIM) systems, particularly Akeneo.

• Experience transitioning software development from external agencies to internal engineering teams.

• Previous experience as a solo developer or embedded team member with significant technical ownership.

• Automated testing experience using tools such as Vitest, Playwright, or PHPUnit.

• Python scripting experience.

• Familiarity with trading card games.

Benefits

• Salary: CAD $120,000–$145,000 annually.

• Work arrangement: Remote or hybrid, based in Canada, with Montreal as the listed location.

• Flexible schedule: Flexible daily working hours within Monday-to-Friday core hours.

• Health coverage: Health and dental benefits.

• Retirement savings: Group Registered Retirement Savings Plan (RRSP) with employer matching contributions.

• Employee discount: Access to a staff discount.

• Professional impact: A foundational role with substantial ownership of applications and technical direction.

• Modernization opportunities: The chance to improve and unify production systems that directly support daily business operations.

• Structured onboarding: A planned transition period with the existing external development agency.

• Team and career development: A collaborative, hands-on environment with the opportunity to establish development practices and help shape the future internal technology team.