Senior Full Stack Engineer, Client Platform

Team: IT

Location: Canada

Commitment: Full-time

Workplace Type: remote

Accountabilities:

• Design and evolve GraphQL schemas within a federated graph, including server-driven UI contracts consumed by web and mobile clients.
• Manage GraphQL schemas as versioned contracts, identifying breaking changes, coordinating migrations across client teams, and keeping generated client models synchronized.
• Develop, scale, and optimize GraphQL APIs, RPC endpoints, and SQL queries supporting digital client experiences.
• Build front-end applications and shared component libraries using React and TypeScript, with a strong focus on performance and accessibility.
• Partner with product and design teams to architect and deliver customer-facing features end-to-end.
• Use observability tools to diagnose production issues, improve user experiences, and establish effective monitoring and alerting through Datadog.
• Identify technical debt, production bottlenecks, scalability risks, and opportunities to improve code quality and platform performance.
• Contribute to system design, architecture, feature delivery, and technical standards within a collaborative Agile environment.
• Develop comprehensive automated tests for new features and bug fixes, working with QA to strengthen testing pipelines and CI/CD workflows.
• Mentor engineers through code reviews, pairing, documentation, and knowledge sharing.
• Incorporate agentic development tools such as Claude Code into daily engineering workflows while maintaining strong quality standards.

Requirements:

• At least 5 years of professional software engineering experience.
• Strong JavaScript, TypeScript, and React skills, combined with solid UX instincts.
• At least 2 years of experience designing and evolving GraphQL schemas for product surfaces used across multiple clients, including iOS, Android, and web.
• Strong knowledge of HTML, CSS, and browser technologies, including the DOM, events, and platform APIs.
• Solid computer science fundamentals, including data structures, algorithms, distributed systems, and software design.
• Experience working with production systems at scale, including load testing, tracing, performance analysis, and optimization.
• Experience investigating and resolving production performance regressions, including CPU hotspots and latency issues in high-throughput services.
• Experience participating in on-call rotations and owning production release cycles end-to-end.
• Strong focus on clean architecture, maintainable code, and software craftsmanship.
• Excellent written and verbal communication skills, with experience producing technical specifications, runbooks, and cross-team design documentation.
• Experience developing APIs with Node.js, Bun, or another server framework such as Phoenix, Ruby on Rails, FastAPI, or Laravel.
• Experience building multi-client or white-label platforms, including geo-based routing and per-brand configuration.
• Experience with Kubernetes and operating services in containerized environments.
• Comfortable working with terminal-based development tools, Git, GitHub or similar platforms, and modern code editors.
• Experience with testing frameworks such as Jest, Vitest, ExUnit, RSpec, or pytest.
• Experience with Apollo Federation at scale or GraphQL APIs using Absinthe is a plus.
• Mobile development experience with Swift or Kotlin, as well as knowledge of relational databases such as PostgreSQL and MySQL, is desirable.
• Familiarity with hexagonal architecture, Domain-Driven Development, background job processing, asynchronous event infrastructure, open-source contributions, or startup environments is a plus.
• Passion for sports or esports is considered an advantage.

Benefits:

• Published salary range of $135,000–$180,000 USD annually.
• Competitive compensation package.
• Potential bonus eligibility for non-sales positions.
• Comprehensive benefits for eligible employees.
• Education and conference reimbursement.
• Opportunities for career progression.
• Opportunities to mentor and support other engineers.
• Remote work environment.
• Fun and relaxed working environment.