We're looking for a Senior Full Stack Engineer who builds end-to-end features on a sports-training platform — and uses AI tools daily to ship faster. Coaches plan and assign training programs in a web console; athletes train from a mobile app. You'll work in a modern TypeScript codebase built on Next.js, Postgres in Supabase and Clerk, owning everything from the database schema and security policies to a polished UI. This is a hands-on product engineering role where AI is part of the daily workflow.
Key Responsibilities
- Build and ship full-stack features end-to-end with TypeScript, Next.js 16 (App Router, Server Components, Server Actions) and React 19
- Design Postgres schemas in Supabase and secure them with Row-Level Security policies, migrations and generated types
- Implement auth and role-based access with Clerk (organizations, roles, permissions) integrated with Supabase RLS
- Build mobile-first screens for athletes and data-dense console screens for coaches with Tailwind CSS and shadcn/ui
- Keep domain logic in clean, testable services; write unit tests and integration tests against a local Supabase
- Deploy on Vercel and maintain infrastructure with Terraform
- Monitor and triage production issues with Sentry
- Use AI coding tools (e.g. Claude Code) daily to accelerate development
- Collaborate closely with product and design; participate in code reviews
- Senior: own features from idea to production, make and document architecture decisions, and mentor others
Required Qualifications
Engineering:
- 5+ years commercial experience
- Strong TypeScript and JavaScript fundamentals
- Hands-on experience with React and Next.js (App Router), including the server/client component boundary
- Solid SQL and PostgreSQL fundamentals: schema design, indexes, migrations
- Experience with authentication and authorization in web apps
- Understanding of Git workflows, CI/CD pipelines (GitHub Actions), and code quality tools (ESLint, Prettier)
- Comfortable working with automated tests and code reviews
AI Mindset & Tooling:
- Regularly uses AI-assisted development tools (e.g. Claude Code)
- Reviews AI-generated code critically and knows when not to trust it
- Uses AI for real productivity gains, not just experimentation
Product & Collaboration:
- Understands the "why" behind features, not just the "how"
- Cares about UX, especially on mobile
- Comfortable working closely with product and design stakeholders
- Good English communication skills (written and spoken)
Nice-to-Have
- Experience with Supabase and Postgres Row-Level Security
- Experience with Clerk authentication
- Terraform or other IaC experience
- Tailwind CSS and Radix UI / shadcn component libraries
- PWA and mobile web experience (iOS Safari, installability)
- Monorepo tooling (pnpm, Turborepo)
- Exposure to observability tools (Sentry, product analytics)
- Interest in sports, coaching or fitness products