Software Engineer (d/f/m) - Full Stack

Job Posted 23 Days Ago Posted 23 Days Ago
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Madrid, Comunidad de Madrid
Junior
Fintech • Payments • Financial Services
The Role
As a Full Stack Software Engineer, you will build and maintain scalable systems, improve user experiences, and collaborate with cross-functional teams to enhance product performance and quality.
Summary Generated by Built In
Our story:

Every year millions of people are either filing their taxes in fear or giving up on their tax refund altogether. We're working on fixing that. Our intuitive app enables anyone, regardless of education or background, to file their taxes with newfound confidence.

Spread across Germany, Spain and the UK, the team at Taxfix Group with its brands Taxfix, Steuerbot and TaxScouts, is a compassionate group of solution-finders. We speak our minds openly, and with over 400 professionals, including tax experts, developers, and IT security experts, we're rich in ideas and voices. The group has facilitated more than 3.5 billion euros in tax refunds for its customers since its founding in 2016.

Your challenge:

At Taxfix, we believe that doing your taxes shouldn’t feel like doing your taxes. As part of the DIFM (Do It For Me) team, you’ll be at the heart of building a radically simplified and intuitive tax-filing experience for our users—especially those who just want to hand it over and have it done right. Your challenge will be to scale the product so it can support a growing number of users without compromising performance, quality, or the joy users feel when they use it. You’ll work in a fast-paced, experiment-driven environment, helping us uncover pain points and translate them into delightful user experiences. This is an opportunity to build meaningful software with real impact, backed by a culture that supports learning, autonomy, and innovation.

Your responsibilities and decisions:
  •  Build and maintain scalable front- and back-end systems, ensuring high performance and reliability.

  • Collaborate closely with product, design, and data teams to deliver new features that improve the DIFM user experience.

  • Contribute to the continual improvement of code quality, testing practices, and architecture.

  • Help evolve our CI/CD processes to support safe, rapid iteration while maintaining stability.

  • Ensure the product’s technical performance meets our high bar while maintaining a smooth and responsive UX.

  • Actively support knowledge sharing and mentoring in the team to help others grow their full-stack capabilities.

Your profile:
  •  You are a software engineer with around 2+ years of solid experience in both front-end and back-end technologies, or strong in one area with a passion to grow full-stack.

  • You are proficient in JavaScript and TypeScript and can navigate confidently between them.
    You have hands-on experience building mobile experiences, especially using React Native.

  • You thrive in agile environments and are used to shipping iteratively and learning from user behavior.

  • You care deeply about product quality and user experience, not just code correctness.

  • You’re a strong communicator, both verbally and written in English, and can work effectively in a diverse, cross-functional team.

  • You are a diversity champion

 

Why Taxfix?
  • A chance to do meaningful, people-centric work with an international team of passionate professionals.

  • Holistic well-being with free mental health coaching sessions and yoga.

  • A monthly allowance to spend on an extensive range of services that you can use and roll over as flexibly as you like.

  • Employee stock options for all employees—because everyone deserves to benefit from the success they help to create.

  • 30 annual vacation days and flexible working hours.

  • Work from abroad for up to six weeks every year. Just align with your team, and then enjoy your trip.

  • Plenty of opportunities to socialise as a team. In addition to internal tech meetups, our international team hosts regular get-togethers—virtually and in person when possible.

  • Free tax declaration filing, of course, through the Taxfix app—and internal support for all personal tax-related questions.

  • Have a four-legged friend in your life? We’re happy to have dogs join us in the office.


Excited? So are we. Learn more about Team Taxfix on our blog and get a glimpse of our culture.

 

At Taxfix, we believe that incredible things happen when you have a wealth of perspectives and experiences. We're proudly committed to equal employment and development opportunities no matter your gender, race, religion, age, sexual orientation, colour, disability, or place of origin. To help mitigate any potential unconscious biases, we ask that you refrain from including your picture, age, or marital status on your CV. Let your experiences speak for themselves.

Not sure if you meet all the requirements for this role? Please apply anyway. You might bring something special to the team that we hadn't considered previously.

Top Skills

JavaScript
React Native
Typescript
Am I A Good Fit?
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The Company
Berlin
339 Employees
On-site Workplace
Year Founded: 2016

What We Do

Interested in becoming a Taxfixer? Explore our open roles: https://taxfix.de/en/careers/

And learn more about us here:
https://medium.com/taxfix
https://www.instagram.com/teamtaxfix/
https://www.facebook.com/taxfix.de/
https://github.com/taxfix

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