Data Software Engineer

Vaillant Group Business Services Poland; Katowice; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Hybrid work model

Flexible start times

Remote work days abroad

Private medical care

Sports card subsidy

Group insurance

Ergonomic office spaces

Training & mentoring

Product discounts

Job summary

Vaillant Group Business Services Poland is seeking a Data Software Engineer to collaborate with data scientists and engineers on analytics foundations for machine data, processes and customer insights.

You will maintain a scalable codebase for ETL/ELT across IoT, CRM and enterprise platforms, ensuring high quality software and reliable data products on our platform. English fluency is required; German is a plus, and the role features a hybrid work model.

Qualifications

• University degree in computer science or a comparable quantitative field is required.
• Three+ years of professional software development experience in data analytics or data engineering environments.
• Proficient in Python and SQL with hands‑on experience in modular, scalable data analytics applications, ideally using cloud-based technologies such as Azure and Databricks.
• Nice to have: Java, Scala, Spark or Kafka; exposure to agile frameworks and tools.

Responsibilities

• Collaborate with data scientists and data engineers to strengthen the software foundation of analytics solutions for machine data, business processes, and customer insights.
• Maintain and further develop a scalable codebase for ETL/ELT processes extracting, transforming, and serving large data volumes from IoT, CRM, and enterprise platforms.
• Ensure high code quality and reliable operation of data products on our data platform.
• Apply DataOps practices and automation to streamline development workflows and improve efficiency across analytics solutions.
• Contribute to data governance and security initiatives, ensuring compliance with standards and regulatory requirements.
• Engage with product owners and stakeholders to translate requirements into high-quality technical solutions.

Skills

Python

SQL

English fluency

Azure

Databricks

Java

Scala

Apache Spark

Kafka

German language advantage

Education

University degree in computer science or quantitative field

Tools

Microsoft Azure

Databricks

Job description

• In this role as Data Software Engineer, you collaborate closely with data scientists and data engineers to strengthen the software foundation of advanced analytics solutions for machine data, business processes and customer insights.
• Together with an agile and interdisciplinary team, you maintain and further develop a scalable codebase for extracting, transforming and serving large data volumes from diverse sources such as Internet of Things systems, customer relationship management and enterprise platforms.
• By creating robust, maintainable and future‑proof software components, you ensure high code quality and support the reliable operation of data products on our data platform.
• Your responsibilities will include applying DataOps practices and automation to streamline development workflows and improve efficiency across analytics solutions.
• You actively contribute to data governance and security initiatives, ensuring that data solutions comply with defined standards and regulatory requirements.
• Through open communication and knowledge sharing, you support internal communities and collaborate with product owners and stakeholders to translate requirements into high‑quality technical solutions.

What makes us successful together

• Qualification: You hold a university degree in computer science or a comparable quantitative field and bring a solid technical foundation.
• Experience: You have at least three years of professional experience in software development within data analytics or data engineering environments.
• Know‑how and skills: You are proficient in Python and Structured Query Language and have hands‑on experience designing modular, scalable data analytics applications, ideally using cloud‑based technologies such as Microsoft Azure and Databricks.
• Nice to have: Additional programming knowledge in Java, Scala or technologies such as Apache Spark or Kafka, as well as exposure to agile frameworks and tools, will help you settle in even faster.
• Personality: You enjoy working collaboratively, communicate clearly with technical and non‑technical stakeholders, and are motivated to continuously learn and grow in a dynamic, data‑driven environment.
• Language skills: You communicate fluently in English; German language skills are an advantage

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.