- Location
- Kraków, Poland
- Last Published
- Dec. 4, 2025
- Sector
- Media
- Function
- Software Engineering
Company at a Glance OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens. At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising. OpenX is looking for a talented and highly motivated Regular Software Engineer to help us innovate and improve our products. You will work in all aspects of agile application development, including our enterprise platform that interfaces with a multitude of services that are depended 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. The team is using the following technologies: Frontend: JS/TS, React, Material UI API: Python Backend: Java, Go, Erlang, Elixir CICD: Cloudbuild, Spinnaker
What we offer:
- Employment contract (17 000 - 19 000 PLN gross/monthly) OR B2B (139 - 155 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
Key Responsibilities:
- Design high-performance, distributed, low-latency systems
- Architect, create, and deliver new features and functionality
- Work with Product to drive the requirements, and own the project end-to-end
- Analyse and improve efficiency, scalability, and stability of servers and processes
- Think long-term and be unsatisfied with band-aids
- Identify unnecessary complexity and remove it
Required Qualifications:
- ideally 4+ years of working experience in Java
- experience, please still get in touch with us
- Experience with databases system design, RDBMS or NoSQL
- Experience Google Cloud Platform, k8s, and docker is a big advantage
- Experience working in digital media, marketing technology, or advertising technology is a big plus.
- Communicative Polish and English
Desired Qualifications:
- Fluently speak algorithms and data structures and platforms (Linux)
- 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