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Senior Back End Engineer

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

Abacum is the leading Business Planning solution for finance teams to drive performance. By automating reporting, enabling collaboration, and simplifying planning and forecasting, we help finance teams shift from number crunching to driving strategic decisions. We are looking for talented engineers who possess infinite curiosity to solve complex problems not existing in the market (multi dimensional real time calculations engine), are excited to become part of our early story and help create groundbreaking technology that truly improves how finance teams work and collaborate. Creating an amazing opportunity to code in an extremely agile environment, with a direct long-term impact on our product and users. Our ideal candidate has a strong sense of ownership in their work, is willing to learn quickly, committed to shaping 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: models, variables, formulas
  • Take operational responsibility for the components that you write
  • Work with product and our operations team to incorporate customer feedback in order to constantly improve our product
  • Scale our complex data and calculations platform for a fast growing number, size and complexity of clients

Requirements

  • Python
  • PostgreSQL
  • Kubernetes
  • Agile/Scrum methodology
  • Data driven
  • Product mindset
  • Team player
  • Complex data structures
  • Deep understanding on performance when building and operating through observability

Nice to have

  • Experience with Pandas, Polars or similar DataFrames technologies
  • Experience building ML and AI solutions
  • Experience scaling complex data platforms

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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