Data engineer/scientist lead

Molengraaffsingel 12, 2629 JD Delft, Netherlands




Full Time


€3,000 - €5,500

Our mission

We create the best sustainable heating products. For everyone. And if we say everyone, we really mean every person on earth. The current products for sustainable heating are expensive, noisy and above all not suitable for every home. This causes a delay in the sustainable heating revolution (“warmtetransitie”). A delay we want to speed up! Apply now, and be a part of the solution for the largest challenge of our generation.

Your contribution to our mission

To succeed in our mission, we require effortless interaction between technology and people. As data engineer/scientist you are responsible to bring our real-time data pipeline to the next level and make it ready for scale. The new home is not only heated sustainable but the home owner also knows exactly when and how much energy is used by which appliance. Furthermore, DeWarmte team will require analysed data in order to improve the performance of the HeatCycle and many products to come. It is your responsibility to translate an ocean of sorted data to direct actionable information.

The skills we are looking for

  • In the possession of a computer science Bachelor/Master degree.

  • Great in Python, DB management (AWS, Azure, GCP), time-series data, Javascript and SQL. People talk about you as a data magician, always able to voice the most important conclusions from a dataset.

  • Experienced in creating data pipelines. Sending data, compressing data, storing data, aggregating data, retrieving data. In all steps choices need to be made considering cost, quality and speed. You are comfortable making those choices and able to asses both the short term as the long term impact of these choices.

  • Proficiency in English is a hard requirement for this role.

  • Experience with leading a development team. We use GitHub for version control. You are free in using other software or processes but you will take the lead in outsourcing projects related to our data pipeline and database.

  • The ability to define the scope of work independently and to stay motivated when working alone is essential.

  • You know how to prioritize We are a small team, looking to expand with people who know what to do when.

  • You are reliable and structured. A startup environment is chaotic and fast-paced, structure is essential to build the processes required for the scale-up phase.

  • Flexibility is key. You like handling different things and are not afraid to pick up a varying workload. A turbulent environment gives you energy.

  • We own our mistakes and learn from them. You are comfortable in bearing the responsibility to share failures and move on.

  • Preferably a woman. Of course we look at skills first, we are not sexist in hiring. However, to keep our team diverse we prefer to hire a talented woman.

Your day to day responsibilities

You will bear the responsibility for updating our data pipeline making it ready to handle real-time influx from thousands of IoT devices in the field. The data is used by different types of users and you should define the best alert system, dashboarding solution and automated actions for each used. All this should be done while keeping the cost per device to a minimum and the scalability to a maximum. This data strategy will be defined primarily by you.

Signs of succes

  • Low data cost per device

  • Real-time data for our customers to see

  • Direct feedback to installers and the R&D team on problems and device performance

  • Presenting monthly actionable data presentations to DeWarmte team

Our culture

  • A young team with a unique growth opportunity. You will make a real impact from day one.

  • Together, we're building a company, bringing it from a start-up to a scale up.

  • Diverse responsibilities in a fast paced and fast-growing environment.

  • A steep learning curve.


In addition to joining a start-up leading the sustainable living transformation, you can also expect a good range of benefits. These include a contract with a good base salary to start with (around €3,000 - €5,500 depending on your experience and education), 8% holiday allowance, 27 days annual leave, a laptop & mobile phone package and lunch & drinks at the office. Join our Friday afternoon drinks! We also offer the opportunity to become an even bigger part of our journey by means of an Employee Stock Ownership Plan. This means you will own a piece of the value of DeWarmte so you directly profit from its growth.

What’s more, we really value your personal progress too. It’s our top priority to engage, encourage and develop you to help you improve your potential. In fact, we offer you a digital learning platform for comprehensive training and development programs to demonstrate our dedication to develop your career.

DeWarmte is proud to be an Equal Opportunity employer. We agree not to discriminate against any employee or job applicant because of race, color, religion, national origin, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, physical or mental disability, or age.