Fullstack Engineer

This is a Full Remote job, available in Argentina.

Lazo is building the AI-powered operating system for modern startups, automating everything founders shouldn't have to think about. You'll have massive ownership and work directly with founders.

The Software Engineer will design, develop, and maintain robust software solutions for the Lazo Platform, working across a modern TypeScript and Python stack. You will translate business requirements into scalable technical solutions that drive product growth and improve user experience.

This position reports to the Chief Technology Officer.

Lazo is built as an Nx polyglot monorepo (pnpm workspaces) deployed to Container Apps.

• Frontend — Next.js 16 (App Router, React Server Components) + React 19 + TypeScript, organized with Feature-Sliced Design (FSD).
• Backend — FastAPI (Python 3.11) with async SQLAlchemy 2.0 over PostgreSQL.
• Data — PostgreSQL per service; Prisma and SQLAlchemy as the ORM seams.
• Testing — TBD.

• Design, develop, and maintain robust software solutions for the Lazo Platform.
• Translate business requirements into scalable technical solutions that drive product growth and improve user experience.
• Collaborate closely with product management, design, and engineering to ship high-quality software in a fast-paced startup environment.
• Work across a modern TypeScript and Python stack.