Data Engineer - Marketing (d/f/m)

Berlin - Data & Insights

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 Berlin and Madrid, Team Taxfix is a compassionate group of solution-finders. We speak our minds openly, and with 500+ professionals from 45+ different nationalities, we're rich in ideas and voices. In five years, we've raised over 300 million euros in funding and helped people reclaim more than one billion euros.



Your challenge:

We are looking for an experienced Data Engineer to help create a complete, reliable and well structured data and measurement foundation for our Growth & Marketing ambitions at Taxfix. Together with your team you will take full ownership of our Marketing data and aim to provide a solid data foundation towards Taxfix, especially towards Marketing stakeholders and Marketing Analytics.

Together with your team you own the collection, ingestion and transformation of available data from our Marketing sources, own challenges around incomplete data and own logics such as Attribution, ROAS Model etc. Our goal is to create a unified measuring approach to quantify our Growth ambitions and actions and create a solution that we can be proud about and share with everybody.

As part of a small and flexible team we are looking for flexible team members. In this role you can combine your core Data Engineering skills with your Analytical skills, taking full ownership of Data Engineering and contributing to Analytics Engineering and Data Analytics. Your core focus will be on data ingestion from a variety of sources from the Marketing universe and you're encouraged to stretch yourself into the other areas of your team.


Your team:

You will be working within a focus team consisting of a Team Lead, Data Engineer, Analytics Engineer and Data Analyst. Your team is part of the Data organization, which enables everyone in the organisation to make data-driven decisions and drive business growth. We’re committed to data democratisation, scalability, and actionable insights. With a team of Data Analysts ranging from Growth Analytics to Operations, Finance and Product Analytics, Analytics Engineers, Data Engineers and Machine Learning Engineers, we’re building tools and methodologies for data discoverability, accessibility, and reliability. By using Segment, Firebase, Adjust, Snowflake, Python, Airflow, dbt, Looker, Metabase, Notebooks, TVSquared, Voucherify, Google Analytics and many more, we’re able to reach our ambitious goals. Our team members possess a unique combination of technical skills, business understanding, and healthy communication. We can rely on each other to deliver our best and are committed to personal development via knowledge sharing, through mentoring and innovation days.



  • You will ingest data from a variety of Marketing sources to allow yourself and your team to create a trustworthy data foundation for Taxfix.
  • You will connect Taxfix Data with our marketing partners and ingest data back into their systems.
  • You will solve real-time problems in tracking of our marketing campaigns and user attribution.
  • You will be integral in establishing team-wide standards: excellent documentation, monitoring & alerting, code quality, unit testing, CI + CD.
  • Optional: You will contribute on Analytics Engineering, using dimensional modelling to design data models or doing data transformation with dbt to create scalable data pipelines



  • 2+ years experience as a Data Engineer or in a similar position.
  • Strong SQL skills
  • Proven track record of working with Python for Data Engineering around Data Ingestion and Data Quality.
  • Previous experience working in the domain of mobile apps and marketing tracking.
  • Familiar with 3rd party platforms supporting marketing spend and user tracking such as: Adjust, Appsflyer,, Segment, TVSquared, Google Analytics, Google Ads, facebook Ads, etc
  • Excitement to work cross-functionally with different specialisms.
  • A team player and don’t mind “getting your hands dirty“ to support others.
  • Solid communication: You're the only Data Engineer in your team and need to be able to communicate effectively with the other functions


Plus points for:

  • Airflow, Docker or cloud-hosted infrastructure (Google Cloud, AWS or Azure)
  • Experience in dimensional modelling in order to build good DWH, ETL and BI solutions
  • Knowledge and experience of Data quality and monitoring best practices
  • Business and Domain Understanding of Attribution, Marketing reporting and KPIs in order to understand how your data is being used


Why Taxfix? 

  • A chance to do meaningful, people-centric work with an international team of passionate professionals.
  • Holistic wellbeing with free mental health coaching sessions, yoga, and a discounted membership to Urban Sports Club.
  • A monthly allowance to spend on home support services, including childcare, housekeeping, pet sitting, tutoring, and elderly care.
  • Dedicated relocation and visa support for those that need it.
  • Choose to work from home or our modern office when needed—plus healthy drinks and snacks when you do come in.
  • 30 annual vacation days and flexible working hours.
  • Full trust to take ownership of your work in a flat hierarchy where feedback is encouraged and expected.
  • A generous learning budget to support your personal and professional development and guidance from our internal L&D experts.
  • Work from abroad for up to one month 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 below:


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 anyways. You might bring something special to the team that we hadn't previously considered.