Senior Full Stack Engineer, Client Platform

This is a fully remote position, open to applicants in Canada.

📋 Description

• Design and enhance GraphQL schemas within a federated graph, including server-driven UI contracts for both mobile and web clients.

• Identify significant schema changes, coordinate migrations with leads from iOS, Android, and web teams, and ensure generated client models remain synchronized.

• Develop, scale, and optimize GraphQL APIs, RPC endpoints, and SQL queries.

• Create front-end applications and shared libraries using React and TypeScript.

• Construct fast and accessible web applications.

• Collaborate with product and design teams to architect and deliver customer-facing features.

• Utilize observability tools to diagnose issues and enhance guest experiences.

• Establish and fine-tune monitoring and alerting systems in DataDog.

• Enhance code quality by recognizing technical debt and suggesting improvements.

• Identify production bottlenecks and risks while driving platform-scaling enhancements.

• Guide teammates through code reviews, pair programming, and documentation efforts.

• Engage in design, architecture, and feature delivery within a cooperative agile team setting.

• Write comprehensive tests for features and bug fixes.

• Collaborate with QA to strengthen automated testing pipelines and CI/CD workflows.

• Utilize Claude Code in daily development tasks.

• Carry out additional responsibilities as required.

⛳️ Requirements

• A minimum of 5 years of experience in software engineering.

• Proficient in JavaScript, TypeScript, and React, along with strong UX instincts.

• Over 2 years of experience designing and evolving GraphQL schemas for product surfaces utilized by iOS, Android, and web clients.

• Strong understanding of HTML, CSS, and browser technologies, including the DOM, events, and platform APIs.

• A solid foundation in computer science, covering data structures, distributed systems, algorithms, and software design.

• Comprehension of production systems at scale, including load testing and tracing.

• Experience in investigating and resolving production performance regressions, CPU hotspots, and latency issues in high-throughput services.

• Familiarity with on-call rotation for a production service and complete ownership of release processes.

• Proficient in authoring technical specifications, runbooks, and cross-team design documents.

• Experience with API development using Node, Bun, Phoenix, Ruby on Rails, FastAPI, or Laravel.

• Background in building and integrating multi-client or white-label platforms, including geo-based routing and brand-specific configurations.

• Experience with Kubernetes and containerized services.

• Proficiency with terminal tools, Git, and GitHub or similar platforms.

• Familiarity with testing frameworks such as Jest, Vitest, ExUnit, RSpec, or pytest.

• Nice to have: Experience with Apollo Federation at scale, Absinthe, iOS or Android development with Swift or Kotlin, hexagonal architecture, domain-driven design, relational databases, background job processing, asynchronous event infrastructure, open-source contributions, startup experience, and a passion for sports or esports.

🏝️ Benefits

• Competitive compensation package.

• Enjoy a fun and relaxed work environment.

• Access to education and conference reimbursements.

• Opportunities for career advancement and mentoring others.

• Bonus eligibility for most non-sales positions.

• Comprehensive benefits with options and support tailored to employees’ physical, financial, and emotional needs.