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Full Stack Engineer

Full Stack Engineer

WhatJobsMadrid, Kingdom Of Spain, España
Hace más de 30 días
Descripción del trabajo

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

  • Native Spanish speaker or bilingual (Spanish / English) – clear communication is a must.
  • Strong HTML / CSS fundamentals (we value clarity over framework-heavy experience).
  • Proficiency in JavaScript, TypeScript, and Python .
  • Basic Docker knowledge.
  • Experience building projects from scratch and selecting appropriate libraries.
  • Bonus : any experience or interest in Gleam / Elixir (we’re migrating our stack!).

    • Why Ultrai?

  • Small, tight-knit team where your voice matters.
  • Adult-friendly culture, we trust you to manage your own time.
  • Be part of a fast-paced innovation space at the intersection of AI and finance.
  • Learn directly from finance experts with deep domain experience.
  • Free office meals and a prime Madrid city center (Serrano) location.
  • A role with direct impact on product development during our growth phase.
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    Stack Engineer • Madrid, Kingdom Of Spain, España