Backend Developer ( Python)

At Schibsted & Vend Polska we create technology that empowers trusted media and successful marketplacesAs a joint venture between Schibsted and Vend, we develop intelligent, user-focused digital platforms — from news websites and classifieds apps to personalization and AI tools. With 12+ years of experience and teams in Kraków and Gdańsk, we co-create products used daily by millions.What sets us apart? A culture of trust.We believe great work happens when people feel trusted and empowered. You’re seen, heard, and valued — not just for what you do, but for who you are. We work in a space of openness, respect, and real recognition, where flexibility is the norm and growth is truly personal.About The CompanySchibsted & Vend Polska is a joint venture between two leading Nordic entities - a major media house, Schibsted, and a dynamic marketplace leader, Vend. With over 300 software engineers in Kraków and Gdańsk, we provide high-quality technological solutions that support the operations and innovations of both parent companies.About The TeamThe Ads Insights & Targeting team, part of Schibsted’s Ad Capabilities unit, builds and maintains critical systems that empower advertisers through data-driven insights and advanced targeting capabilities. We create solutions that make advertising more efficient, transparent, and privacy-safe - helping fund quality journalism across Schibsted’s brands.We’re a cross-functional team of around 12 people - including an Engineering Manager, a Product Manager, and 10 Software Engineers. We work closely together across the whole product lifecycle - from idea to production - combining product thinking, data expertise, and solid engineering craft. Our culture is built on collaboration, ownership, and curiosity: we review each other’s code, run internal workshops, and continuously look for ways to make our systems and ourselves better.We’re Responsible ForClean Rooms - secure data environments that allow advertisers to understand whether their campaigns drive real results (e.g. if a user who saw an ad later bought their product) - without sharing or exposing any personal data.Reporting - delivering accurate, real-time performance insights.Audience Targeting Engine - helping advertisers reach the right people, at the right time, across Schibsted brands.Reach Algorithm - our next-generation solution for measuring campaign reach in a world without third-party cookies.About The RoleAs a part of Ads Insights & Targeting team, your responsibilities will include:Designing, building, and maintaining large-scale data systems processing billions of events daily.Collaborating with other engineers and product managers to turn business needs into scalable, production-ready solutions.Ensuring reliability, performance, and high quality through automated testing, monitoring, and continuous integration across our infrastructure.Developing and optimising backend services in Python and Scala using modern data and cloud technologies.Contributing to code reviews, architecture discussions, and knowledge-sharing sessions (e.g. workshops, demos, or pair programming).Shaping the future of our data platform.About YouWe’re looking for a Software Engineer with strong Python programming skills who can work with large datasets and collaborate effectively with the team. If you check most of these boxes, we’d love to hear from you:3+ years of experience as software engineer, working with modern programming languages Strong Python programming skills and familiarity with testing best practices (unit, integration, end-to-end)Experience with big data would be a big plus!Experience with cloud platforms (preferably AWS)Strong problem-solving skills – you take initiative and think criticallyOwnership mindset – you take responsibility for your work and align with teams & stakeholdersGreat communicator – you value open discussions, give and receive feedback, and enjoy teamworkBonus points: Familiarity with Java/Scala, Snowflake, Kubernetes, Docker, Airflow and Spark.Polish language is required If this sounds like you, let’s talk! 🚀We work in a hybrid way and would like to catch up with you at our vibrant and colourful office in Kraków 2 days per week. This allows for collaboration and meaningful connections with the team. If you’re not the working-from-home kind of person, you are of course welcome in our office every day!