Full Stack Engineer

Mid Level Full Stack Developer (React)

Madrid, Spain | Hybrid (3 days in office)

About Ultrai

At Ultrai, we’re building the next generation of financial AI. Our mission is to empower financial institutions with precise, real-time insights through cutting-edge quant models. Backed by a financial institution and trusted by 5,000+ users, we’re in an exciting exploration phase creating portfolio meta-analysis tools with LLM-powered analysis and intuitive chatbot interfaces.

The role

We’re looking for a mid level full stack developer (with a frontend focus) to join our lean tech team of 4. This is a hands-on role where you’ll help build new features from scratch, contribute to architectural choices, and grow your skills in a fast-moving AI fintech environment.

What you’ll do

• Build high-quality frontend experiences with clean, minimal boilerplate code.
• Work mainly with JavaScript, TypeScript, and Python .
• Build from scratch the frontend component, with React.
• Take ownership of your work and contribute ideas to framework and library choices.
• Code ~32 hours per week with minimal meetings – focus on building.

What we’re looking for

Why Ultrai?