This offer is not available anymore

Senior Back-end Developer - Node.js in Barcelona or Remote


€50,000 - €60,000
Share offer

Job Description

We’re a Barcelona-based startup developing Fermat (, a spatial productivity app with an emphasis on end-user programming. At the forefront of research in the field of Tools for Thought, we're a dedicated team with a long term vision to transform the way humans interact with machines. After growing rapidly during the last year, we're looking to expand our team in order to tackle the challenges that lay before us.

We encourage diverse profiles to apply for this role and are committed to creating an inclusive workplace at Fermat.

Take a look at how our product works πŸ‘‡πŸ‘‡

About this position

As a Back-end Developer, you will be responsible for developing Fermat's server data layer. You will work together with the rest of the development team to implement feature requests coming from the UX department on top of our existing infrastructure. Aside from this, you will work on designing and implementing major improvements to our backend infrastructure, with the objective of enabling the rest of the team to ship features at a faster pace.

We are specially interested in candidates who have previous experience working on real-time collaborative backend infrastructure.


Be part of a team where you will

  • Work at the forefront of research in Tools for Thought.
  • Work on a complex web application with many moving parts.
  • Own your deliverables from start to finish.
  • Participate in and own technical decisions.

You Have

  • Computer Science degree, similar technical field of study or equivalent practical experience.
  • At least 5 years of experience as a Back-end Developer
  • Experience with Node.js
  • High agency to provide insightful solutions to complex problems.
  • Knowledge and interest in data intensive applications.
  • Strong will to produce clean and structured code.
  • Ability to prioritize decisions to keep a high delivery rate.
  • Written and verbal communication skills in English.

Good to Have Skills

  • You have knowledge of MongoDB, Cloudflare and Prisma
  • You have worked in Product-based companies

We provide

  • Competitive salary.
  • Remote friendly options
  • Gym membership (2 minutes away from the office)

About Fermat

  • Saa S / Ai

  • Barcelona, Spain

  • 10 - 50

  • 2021

Makers of Fermat. We rethink how people interact with tools, computers and ideas.

Other backend developer jobs that might interest you...