Big Data Engineer IV at OpenX

At OpenX, we are on a mission to unlock the full economic potential of digital media. We build sophisticated advertising technologies that deliver optimal value to publishers and advertisers across every screen. Operating at an incredible scale, our 100% cloud-based platform handles over 400 billion ad requests every day, processing more than 50 PB of data each week. If you are a creative problem-solver who thrives on technical innovation and high-scale challenges, we want you to help us push the frontiers of digital advertising.

Role at a glance

We are looking for a Senior Big Data Engineer IV to join our core data development team on a full-time, remote basis. You will play a pivotal role in our agile development process, contributing to the architecture and delivery of features for our enterprise platform. This is a high-impact position where your expertise will directly influence how we process billions of daily requests, and you will work alongside a team where half of our members are senior developers.

Your impact

• Design and build robust, large-scale data processing systems that handle massive volumes of information.
• Collaborate closely with product teams to define requirements and take full ownership of projects from inception to deployment.
• Analyze and optimize our applications to ensure maximum efficiency, scalability, and long-term stability.

What you'll need

• At least 8 years of professional experience in Java, Scala, or Python development.
• A minimum of 3 years of experience specifically in Big Data systems.
• Expertise in building complex data pipelines using tools like dbt or Dataform and SQL.
• Strong proficiency with BigQuery or similar data warehouses, including performance tuning and monitoring.
• Hands-on experience with data orchestration tools like Airflow.
• Cloud proficiency with Google Cloud Platform or AWS, along with Docker and Kubernetes.
• A solid understanding of CI/CD, automated testing, and DevOps practices.
• Fluency in both English and Polish.
• A Bachelor’s degree in computer science, physics, or a related field.

Perks and compensation

We offer a competitive compensation package tailored to your preferred working arrangement. You can choose an employment contract with a salary range of 22,100 - 26,000 PLN gross/monthly or a B2B contract ranging from 180 - 207 PLN net/hourly.

• Flexible working hours and remote work options.
• Annual performance bonus.
• Private health care for you and your family.
• Private life and travel insurance.
• MultiKafeteria program and holiday allowance.
• Access to LinkedIn Learning and professional tech workshops.
• Pension scheme (PPK).
• Monthly work-from-home allowance and a one-time home office setup payment.
• Additional paid time off and celebration of personal milestones.