Senior Full-stack Engineer (Product Builder)

We are looking for a Senior Full-stack Engineer who thinks like a builder, not just an implementer.

At Limitless, we are moving away from strict role separation between frontend, backend, and QA. Instead, we are building a team of product builders - engineers who can design, build, test, and ship product features end-to-end.

This role is ideal for someone who enjoys owning features from idea to production, working closely with product and engineering teams, and using modern tools (including AI) to move fast while maintaining quality.

Rather than handing work across multiple teams, our product engineers own the full lifecycle of what they build - development, testing, and iteration.

You will

• Design, build, test, and ship product features end-to-end

• Work across frontend and backend systems

• Write clean, maintainable, production-ready code

• Test your own features (manual and automated testing)

• Use modern development tools and AI-assisted workflows to move faster

• Collaborate closely with product, design, and engineering leads

• Take ownership of features and iterate quickly based on feedback

• Improve product quality through thoughtful testing and engineering practices

• Contribute to improving our engineering workflows and development processes

What you bring

• 5+ years of experience in software engineering

• Strong experience with TypeScript / Node.js

• Experience working across frontend and backend

• Ability to build and ship features independently

• Solid understanding of testing practices (automated or manual)

• Product mindset - you care about what you build and why

• Comfort working in fast-moving startup environments

• Strong problem-solving skills and ownership mentality

• Desire to have skin in the game & make it big

Nice to have

• Experience in Web3 / blockchain

• Experience building full-stack product features

• Familiarity with automated testing frameworks

• Experience using AI tools in development workflows

• Experience in DeFi, trading, or prediction markets

• Previous work in product-driven startups

• GMT or nearby timezone preferred

Benefits

• Competitive option stock & salary based compensation

• Unlimited PTO

• Global team offsites

• Professional development opportunities

• Hardware (if needed)

• Office in Lisbon