Full-Stack Developer

Pavago; United States; Remote; USD 165,000 - 248,000; Full time

Job summary

Pavago is seeking a senior Full-Stack Developer to build Sergio, an AI assistant for home service businesses, starting with cleaning companies. You will own frontend, backend, data, billing, integrations, and AI features with AI tools like Claude Code and Cursor.

Ideal candidates ship production-ready work quickly, make independent technical decisions, and collaborate with cross-functional teams to evolve the product. Remote role with overlapping hours in ET.

Qualifications

• Senior-level experience building and shipping full-stack web applications in production.
• Strong hands-on expertise with Next.js App Router and TypeScript.
• Experience with Supabase or another PostgreSQL-backed platform.

Responsibilities

• Product Development: Build and iterate on Sergio using Next.js App Router, TypeScript, and Tailwind CSS; Develop responsive, production-ready features deployed through Vercel.
• Backend & Data Architecture: Design multi-tenant data structures with Supabase/PostgreSQL; implement Row-Level Security (RLS); manage authentication flows.
• Billing & Integrations: Own Stripe billing integration including subscriptions, webhooks, plan management; build SMS/email delivery pipelines; integrate third-party services.
• AI & LLM Development: Build AI-powered features using Anthropic API or similar; design prompts, handle responses, integrate LLMs.
• UI/UX & Frontend Quality: Build polished, responsive interfaces from rough mockups; ensure usability and visual quality.
• AI-Assisted Development: Work with AI coding agents; review AI-generated code for errors and security; guide tools to production-quality implementations.
• Testing & Delivery: Write Playwright tests; ship small, focused changes; document decisions clearly.

Skills

Next.js App Router

TypeScript

Supabase/PostgreSQL

Job description

Position Type: Full-Time | Remote
Working Hours: Minimum 4 hours of overlap with U.S. Eastern Time
Employment Type: Long-Term Contract

About the Role

We're looking for a senior Full-Stack Developer to build and evolve Sergio, an AI assistant designed for home service businesses, starting with cleaning companies. You'll own features across the frontend, backend, data, billing, integrations, and AI capabilities while working closely with AI coding tools such as Claude Code and Cursor.

This role is ideal for someone who can move quickly, make sound technical decisions independently, and consistently ship polished, production-ready work.

Key Responsibilities

Product Development

• Build and iterate on Sergio using Next.js App Router, TypeScript, and Tailwind CSS.
• Develop responsive, production-ready features and screens deployed through Vercel.
• Turn product requirements and rough mockups into polished user experiences.

Backend & Data Architecture

• Design and maintain multi-tenant data structures using Supabase and PostgreSQL.
• Implement and maintain Row-Level Security (RLS) to properly isolate customer data.
• Manage authentication flows and backend data architecture.

Billing & Integrations

• Own the Stripe billing integration, including subscriptions, webhooks, plan management, and edge cases.
• Build and maintain reliable SMS and email delivery pipelines.
• Develop and maintain third-party integrations as the product evolves.

AI & LLM Development

• Build AI-powered product features using the Anthropic API or comparable LLM APIs.
• Work hands-on with prompt design, response handling, and LLM integration.
• Ensure AI-generated outputs are useful, reliable, and naturally integrated into the product experience.

UI/UX & Frontend Quality

• Build polished, responsive interfaces from rough mockups without requiring constant designer involvement.
• Apply strong UX/UI judgment across components and user flows.
• Maintain a high standard of usability and visual quality.

AI-Assisted Development

• Work daily with AI coding agents such as Claude Code and Cursor.
• Review AI-generated code critically and identify errors, security issues, and architectural problems.
• Guide AI tools toward production-quality implementations rather than relying on them blindly.

Testing & Delivery

• Write Playwright or comparable end-to-end tests for critical product flows.
• Ship small, focused changes to the development branch consistently.
• Communicate progress, decisions, blockers, and technical reasoning clearly through async written updates.

Required Experience & Skills

• Senior-level experience building and shipping full-stack web applications in production.
• Strong hands-on expertise with Next.js App Router and TypeScript.
• Experience with Supabase or another PostgreSQL-backed platform