Data Engineer

What we achieve together

In role as Data Engineer, you will design, build and optimize the data infrastructure that powers Vaillant Group’s digital and analytical capabilities. You will collaborate with data scientists, analysts and cross‑functional teams to create scalable data solutions that unlock insights for meaningful business decisions. With your expertise, you will help shape robust data products, contribute to a modern data ecosystem and play a vital role in advancing our digital transformation.

• You work alongside data scientists and fellow engineers on advanced analytics for IoT, industrial IoT, business process and customer data — directly contributing to Vaillant Group’s mission of creating a better climate for our customers and the planet.
• Your responsibilities include designing, building and maintaining infrastructure for extracting, transforming, loading and serving large data volumes from diverse sources using cloud technologies, Spark frameworks and DataOps practices.
• After analyzing stakeholder needs, you support the development, maintenance and automation of data products that enhance our digital service portfolio.
• By understanding Vaillant’s data model, you provide guidance on efficient data modelling and advise users on the most effective ways to structure and analyze datasets.
• Together with interdisciplinary teams, you actively participate in data governance, security and compliance initiatives to ensure reliable and trustworthy data solutions.
• Through clear communication and collaboration with product owners and Data Relationship Managers, you keep stakeholders aligned and contribute to transparent progress throughout the development lifecycle.

What makes us successful together

• Qualification: You hold a university degree in Computer Science or a related quantitative field with a focus on Data Science or Data/ML Engineering.
• Experience: You bring at least 3 years of experience in data analytics, ideally within a Big Data context, and are confident in working in interdisciplinary environments.
• Know‑how and skills: You are proficient in Python and SQL and ideally possess additional programming skills in Java or Scala, with strong familiarity with developer tools and Spark-based technologies. You have experience with cloud platforms such as Microsoft Azure and Databricks and understand their components for data processing and storage. You contribute to data quality by implementing validation and cleansing processes and supporting efficient data engineering workflows.
• Nice to have: Knowledge of frameworks such as Kafka, experience with advanced cloud components or deeper expertise in DataOps practices are desirable additions.
• Personality: You are proactive, analytical and structured, with a strong ability to solve complex data challenges and present insights clearly to diverse audiences. You thrive in agile, collaborative environments, bring curiosity and initiative and continuously expand your knowledge to evolve as a Data Engineer.
• Language skills: You speak fluent English (minimum B2 level), while German language skills are considered a plus.

What you can count on

• Flexible work model: adjustable starting times (7:30 – 9:00AM), hybrid work 70/30, and up to 30 days of remote work from abroad from selected countries.
• Health & Wellness support: private medical care (Medicover), sports card subsidy (Multisport), group insurance (Warta), and ergonomic office spaces.
• Time off & balance: additional paid 2 days off and subsidies for recreation.
• Financial perks: up to 30% discount on company products, support for commuting and eyewear.
• Growth & Development: access to internal training, mentoring programs, self-learning platform for languages (eTutor) and international projects.
• Culture & Community: company events, family friendly activities, and open opportunities within Vaillant Group.

What makes us special

We take care of a better climate. In every home and our environment. As a successful family business, we have been living up to this claim for over 150 years. We are one of the world's leading providers of heat pumps, digital services and efficient gas heating appliances and offer energy-saving solutions.

You will find sustainability everywhere at the Vaillant Group. In the office, at the production sites and on the road. Around 16,000 employees from over 70 countries are committed to this every day. As an international team, we take responsibility - for our future and that of our planet. We promote your personal development so that you can act with passion and together we can ensure a better climate.

Become part of the Vaillant Group and help us shape the future of heating!

We promote equity and do not tolerate any form of discrimination. We value the uniqueness of each individual and encourage all people to apply.