Full-Stack Engineer: AI-Driven Product & Growth Builder

HardLaunch; California (MO); Hybrid; USD 120,000 - 180,000; Full time

Job summary

HardLaunch seeks a strong full-stack product engineer to own end-to-end development from UI to data layers. You will work with TypeScript across frontend (Vite/React) and backend, deployed on Vercel with Supabase and Postgres, and ship features that scale.

You will design architecture, drive AI-driven automation, and collaborate with the founder to align product and growth efforts in a fast-moving environment.

Qualifications

• End-to-end product engineering experience across UI and backend services.
• Strong knowledge of TypeScript stack across frontend and backend.
• Ability to operate in fast-moving, ambiguous environments.
• Experience building scalable architectures and AI-driven features.

Responsibilities

• The product, end-to-end. Frontend (Vite / TypeScript) through backend (TypeScript), deployed on Vercel with Supabase (Postgres). The whole path from UI to data is yours.
• Account infrastructure. Generation, assignment, and reliability at scale: 100+ real accounts running as a fleet that posts every day without breaking.
• Content generation. A truly best-in-class AI UGC engine: the system that decides and produces what actually performs.
• Internal tooling. The flows and systems that let the account-creation team operate at volume.
• Agentic integrations. Our MCP server and the architecture that lets us plug into modern agentic stacks.
• Architecture and technical judgment. The calls on structure, tooling, and trade are fast enough to keep shipping and sound enough to scale as our users do.
• The content and product roadmap. In lockstep with the founder: talk to users, know our capabilities, and have strong input on direction.
• AI and automation. Embedded in both the product and the way we build it.
• The future team. Solo builder first, then hire, set the standard for, and lead the engineers who come after you.

Skills

Full-stack

TypeScript

Frontend (Vite/React)

Backend TS

AI interest

Growth mindset

Tools

Vercel

Supabase

Postgres

Vite

React

Job description

HardLaunch seeks a strong full-stack product engineer to own end-to-end development from UI to data layers. You will work with TypeScript across frontend (Vite/React) and backend, deployed on Vercel with Supabase and Postgres, and ship features that scale.

You will design architecture, drive AI-driven automation, and collaborate with the founder to align product and growth efforts in a fast-moving environment.