You will work in all aspects of agile application development, including our enterprise platform that interfaces with a multitude of services that are dependent on to deliver billions of requests per day. Your opinions will be important in all phases of product development, starting from requirements to validation and deployment.
Working on the enterprise platform, you will be working with multiple distributed teams to architect, create, and deliver new features and functionality in order to deliver the best possible advertising experience in the market. Scalability, performance, and rock-solid reliability are all factors to consider with every line you code.
The Team and Project:
You will be part of the core data platform team. Our exchange handles billions of ad requests daily connecting thousands of publishers with demand partners. Each request produces data events that have to be processed to extract business value from them. Daily our applications produce more than 1PB of data.
Please note: all interview stages are run remotely!
Key responsibilities:
- Design large-scale data processing systems.
- Work with Product to drive the requirements, and own the project end-to-end.
- Analyze and improve the efficiency, scalability, and stability of applications.
- Think long-term and be unsatisfied with band-aids.
- Identify unnecessary complexity and remove it.
Required Qualifications:
- 8+ years experience in Java, Scala or Python development
- 3+ years of experience in Big Data systems development
- Experience building complex data pipelines, including SQL-based transformations with tools such as dbt or Dataform, and large-scale data processing with distributed frameworks such as Apache Spark.
- Expertise using BigQuery or other data warehouses including performance tuning and monitoring.
- Understands data orchestration tools like Airflow to extend it with new data pipelines and troubleshoots its operational issues.
- Cloud experience with Google Cloud Platform or AWS, k8s, and Docker.
- Understanding of CI/CD, automated testing, monitoring and other DevOps practices.
- Fluently speak algorithms, data structures, and platforms.
- Experience with database system design, RDBMs and/or NoSQL.
- Bachelor’s degree in computer science, physics, or related field. A Master’s degree is a plus.
- Communicative Polish and English.
Desired qualifications:
- Be comfortable using the right tools and languages for the job, even brand new ones.
- Have the ability to develop scalable, modular applications.
- SCRUM / Agile environment experience.
- Experience working in digital media, marketing technology or advertising technology is a big plus.
- Good written & oral communication skills.
- Good sense of humor.
- Team player.
- Self-starter with the ability to independently identify and act on areas of improvement.
What we offer:
- Employment contract (23 375 - 26 125 PLN gross/monthly) OR B2B (186 - 208 PLN net/hourly)
- Working with the newest technologies such as Cloud Computing (GCP)
- Challenges at work that are difficult to find anywhere else!
- Solving important problems in a scale
- Joining a company that is growing and scaling
- Flexible working hours & remote work option
Our benefits (on employment contract):
- Annual performance bonus
- Tax-deductible system due to copyright protection: 75%
- Private health care for you and your family (covered by OpenX)
- Private life and travel insurance (Covid insurance included)
- MultiKafeteria program
- Training: access to the LinkedIn learning platform and Tech workshops
- Holiday Allowance
- Pension scheme (PPK from PZU)
- Additional paid day off
- Free parking lot
- Access to peer to peer recognition platform
- Monthly work-from-home allowance and one-time payment when you join us to help you set up your home office
- We celebrate team members' important personal milestones (vouchers, gifts)
Skills Required
- 8+ years experience in Java, Scala or Python development
- 3+ years of experience in Big Data systems development
- Experience building complex data pipelines, including SQL-based transformations with tools such as dbt or Dataform, and large-scale data processing with distributed frameworks such as Apache Spark
- Expertise using BigQuery or other data warehouses including performance tuning and monitoring
- Understands data orchestration tools like Airflow to extend it with new data pipelines and troubleshoot operational issues
- Cloud experience with Google Cloud Platform or AWS, Kubernetes, and Docker
- Understanding of CI/CD, automated testing, monitoring and other DevOps practices
- Strong knowledge of algorithms, data structures, and platforms
- Experience with database system design, RDBMS and/or NoSQL
- Bachelor's degree in computer science, physics, or related field
- Master's degree
- Communicative Polish and English
- SCRUM / Agile environment experience
- Experience working in digital media, marketing technology or advertising technology
- Ability to develop scalable, modular applications; team player; good communication; self-starter
OpenX Technologies Compensation & Benefits Highlights
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Healthcare Strength — Benefits include competitive medical, dental, and vision coverage with eligibility from day one, plus 100% employer‑paid therapy and life coaching to support mental health. Wellness support is reinforced through ongoing wellbeing stipends.
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Parental & Family Support — The package features 100% paid parental leave for birthing, non‑birthing, and adoptive parents. Additional family‑formation and caregiving support, including fertility benefits and dedicated resources, are highlighted.
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Leave & Time Off Breadth — The company promotes generous time away through time off and extended holidays, with some materials noting unlimited PTO and company‑wide recharge days. Extras like birthday time off further broaden the time‑off offering.
OpenX Technologies Insights
What We Do
OpenX is The Intelligent SSP™ (supply-side platform), simplifying advertising for marketers, advertisers, and publishers worldwide. As one of the largest SSPs globally, OpenX combines the industry’s only fully cloud-based infrastructure with leading AI capabilities to make digital advertising easier and more effective across every format, including CTV. Built to responsibly deliver quality, performance, and adaptability, OpenX makes digital advertising safer, smarter, and built for what’s next. Learn more at www.openx.com.
Why Work With Us
At OpenX, we value curiosity, innovation, and diversity. We are passionate about pushing the boundaries of ad tech and finding new ways to deliver value to our partners and we know our best chance of delivering is by creating diverse and inclusive teams where employees can do their best work being their authentic selves.
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OpenX Technologies Offices
Hybrid Workspace
Employees engage in a combination of remote and on-site work.














