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Senior Backend Java / Kotlin in Madrid

Ninety Nine Markets

35,000 - €50,000
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Job Description

Our values has made us dream of a new way of stock trading. More simple, personal and commission free. We are building an online broker the way it is meant to be for millennials.

Will you help us?

About the position:

We are looking for a passionate senior Java and/or Kotlin engineer. Someone who shares our desire to build high quality products that put customers at the forefront of our product core.

As a member of our engineering team you will build new features, improve our backend, connect our platform to financial third-parties, and work closely with other product-related teams.

Working from our headquarters you will play a key role in the design and implementation of key features that will be used by thousands of users every day.

What you’ll do:

  • Build our backend (middle and back office) from scratch.
  • Connect our platform with financial third-parties.
  • Design, build, and maintain APIs, services, and systems across our engineering team.
  • Care about the product you are crafting by choosing the best possible technical solution.
  • Set and improve the best coding practices.
  • Work closely with other product-related teams.


  • 2/3+ years of relevant experience as a software engineer.
  • Deep knowledge of Java.
  • Knowledge in Kotlin - a plus.
  • Experienced in building scalable backend APIs.
  • Passion for building great products.
  • Creative problem solver - able to identify real obstacles and viable solutions.
  • Prior experience on a Fintech or financial institution - a plus.


  • Option to work remotely.
  • Flexible schedule.
  • Competitive salary based on experience.
  • Sponsored continuous learning.
  • Sponsored assistance to event and conferences.
  • Annual international team meet up.
  • Private health insurance.
  • Family support.
  • Merch, snacks and good vibes.
  • Day off for your Birthday.

  • Fintech

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