Senior Fullstack Engineer

We are Playbook, a leading creator platform for fitness, health, and wellness. Our mission is to help fitness creators build sustainable businesses, while enabling hundreds of thousands of users to live healthier lives.

We are a fast-growing company in the fitness tech space, operating as a remote-first, product-driven team that values ownership, direct communication, and a strong growth mindset.

• 5+ years of professional software development experience, with a strong focus on full-stack JavaScript / TypeScript.
• Proven experience shipping production web applications end-to-end.
• Strong experience with React.js and modern frontend patterns.
• Ability to build responsive, user-friendly interfaces with attention to detail and performance.
• Familiarity with TailwindCSS or similar styling frameworks.
• Experience with Node.js, including designing GraphQL schemas and understanding resolvers, dataloaders, and API structure for maintainability.
• Advanced TypeScript proficiency, comfortable writing complex types, generics, conditional types, and using TypeScript to enforce contracts and model domain logic across the stack.
• Active daily use of AI coding assistants (Claude Code, Codex, OpenCode, or similar) for development, debugging, and problem-solving.
• Strong experience working with relational databases (PostgreSQL preferred), including schema design, query optimization, and reasoning about data consistency and performance.
• Strong communication skills in English.
• Comfortable working in a remote, cross-timezone team and collaborating asynchronously.

Nice to have:

• Experience with Node.js frameworks: Next.js, NestJS.
• Familiarity with MVVM or similar architectural patterns.
• Familiarity with CI/CD pipelines, infrastructure as code, and improving observability and logging.
• Familiarity with AWS services like Lambda, Step Functions, SNS/SQS, DynamoDB, and ECS.
• Experience building or integrating payment and subscription flows (e.g. Stripe, billing systems, in-app purchases).
• Experience working in a startup or fast-growing product company.

• Design and implement new features across the stack (Node.js and ReactJS), with a strong focus on usability, clarity, and real user value, shaping APIs and GraphQL contracts as part of the feature design process.
• Build and evolve backend services and APIs (REST and GraphQL) that power our platform, focusing on reliability, maintainability, and clean integrations with frontend applications and third-party services.
• Work closely with Product Managers and Designers to translate requirements into practical, well-scoped technical solutions.
• Contribute to Engineering Requirement Documents (ERDs) that define data models, API contracts, and integration points before implementation begins.
• Write clean, readable, and well-tested code. Participate in code reviews and contribute to shared standards around quality, testing, and maintainability.
• Improve existing systems where it provides clear product or developer value.
• Take responsibility for the features you build. Identify issues or gaps, propose improvements, and iterate based on feedback.
• Break down product requirements into data models, GraphQL types, and frontend component structure before writing implementation code.