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Senior Front End Engineer

Spain, Barcelona · Job Posted February 21, 2026
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Job Description

We’re looking for a talented Senior Frontend Engineer with boundless curiosity to solve complex, market-defying challenges—like building a multidimensional real-time calculations engine! Join us early in our journey to create groundbreaking technology that transforms how finance teams work and collaborate. This is a unique opportunity to code in an extremely agile environment, make a direct long-term impact on our product and users, and help shape our technical design and engineering culture.

Job Responsibility

  • Collaborate closely with engineers, product designers, and product to perform experiments and test new ideas
  • Build performant, design-centric, reusable and usable interfaces that solve complex needs
  • Drive user defined data modeling and performance, providing the user with customization possibilities through reusable building blocks
  • Take operational responsibility for the components that you write
  • Work in an environment that supports your individual growth
  • Work with product and our operations team to incorporate customer feedback

Requirements

  • TypeScript
  • React (or strong experience in other UI frameworks)
  • Redux
  • SCSS/CSS-in-JS
  • Jest/Playwright
  • Agile/Scrum methodology
  • Data driven
  • Strong knowledge of JavaScript, asynchronous programming, closures, types, and ES6
  • Ability to solve complex product problems with optimized data structures and best practices
  • Product mindset
  • Team player
  • Deep understanding on performance when building and operating through observability

Nice to have

  • Experience with backend programming languages (Python, NodeJS, GO or Ruby are preferred) and RESTful API creation
  • Database systems knowledge (PostgreSQL and MySQL are preferred)
  • Experience with Pandas, Polars or similar DataFrames technologies

What we offer

  • Competitive compensation including equity package
  • Competitive vacation policy
  • Access to Meditopia
  • Hybrid working model and flexible working hours
  • Personal development including language courses

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