Senior Full Stack Developer

• Own delivery of a modern SaaS web application with AI integrations
• Architect modern web features deployed to serverless infrastructure and cloud (edge) functions for long-running tasks. Prioritize correctness, performance, and flexibility
• Model complex problems in a relational database, manage schema migrations, optimize query performance, and secure data with RLS policies
• Write production-quality TypeScript across the full stack: Next.js App Router (React) with TailwindCSS on the front end, Supabase Edge Functions (Deno) on the back end, and PostgreSQL with RLS for data integrity
• Build and maintain the AI pipeline, an extensible orchestration system (Claude Haiku + Sonnet) that generates structured outputs with prompt caching and Zod-validated schemas
• Implement and iterate on UI features using our Glow UI design system, making sure every interaction feels fast and intentional
• Manage CI/CD pipeline via Github Actions and Vercel webhooks
• Participate in and challenge product and UX discussions. We operate with full transparency, so you’re expected to have opinions on what to build and why
• Develop test suites that provide important feedback in a fast-moving startup environment. It’s important to move fast, but also move forward, and a strong test suite prevents regressions

Culture

A few things define how we work:

We have strong architectural opinions. Enforcing strong architecture allows us to move fast without reinventing the wheel on every feature.

We move fast without cutting corners. Fast means clean builds, clean lint, and working tests. Surprises cost time, and minimizing them upfront allows us to move fast.

We don’t hide from bad news. If something is broken, architecturally wrong, or likely to cause problems at scale, we address it head on and stay open to change. Prioritize the user experience always.

We treat AI as a collaborator. We use Claude heavily in our development workflow (Claude Code, Cowork, and in-product pipelines). You should be comfortable prompting, evaluating, and iterating on AI-generated code rather than rubber-stamping it.

Technology

• Next.js 16 (App Router)
• React 19 + Tailwind CSS v4
• TypeScript
• Supabase (PostgreSQL)
• Supabase Auth (JWT)
• Deno (Supabase Functions)
• Anthropic Claude API (Haiku + Sonnet)
• SWR + SWR Mutation
• Vitest

Do you have experience in TypeScript?, You’ve shipped full-stack TypeScript products in production. You know when to reach for a database function vs. application logic, when something should be configurable vs. static state. You’ve worked with AI APIs and understand token budgets, structured outputs, and prompt caching. You have opinions about data fetching patterns and can explain why optimistic updates matter for UX. You’ve debugged a broken RLS policy.

You’re comfortable being the most senior technical voice in the room. You’ll push back on bad ideas, but you’ll also execute on decisions even if it means adding complexity on the backend so the user gets the best experience.

Experience: 6+ years building production web applications.

Promobile is an experiential marketing agency that designs and produces large-scale brand activations for major consumer brands. To scale what we do, we’re building an AI-powered software platform that plans, prices, and operates those activations.

You’d join the small software team behind that build, backed by an operating agency with real customers, real budgets, and deep domain expertise.