Software Engineer (Data Science)

What We Do: We work on projects that matter – and that make a difference. From fintech and e-commerce to aviation, logistics, media, and fashion, we help our clients build scalable platforms, data-driven solutions, and next-gen apps using ML, LLMs, and Generative AI. Our clients include Spotify, Disney, ING, UPS, Tesco, Truecaller, AllSaints, Volotea, Schmitz Cargobull, and Allegro or InPost. Beyond Projects What makes Xebia special? Our community. We run events like the Data&AI Warsaw Summit, organize meetups (Software Talks, Data Tech Talks), and have a culture that actively supports your growth via Guilds, Labs, and personal development budgets — for both tech and soft skills. It's not just a job. It's a place to grow.

What sets us apart? Our mindset. Our vibe. Our people. And while that's hard to capture in text – come visit us and see for yourself. You will be developing backend services and applications using Kotlin or Java, processing large data volumes using Scala and BigQuery, designing and maintaining data pipelines using Apache Airflow in the Cloud Composer (GCP) environment, working with Google Cloud Platform services to build scalable and reliable data infrastructure, preparing and transforming datasets for machine learning processes, supporting the development and training of AI/ML models, including experimentation and A/B testing, performing exploratory data analysis and creating visualizations to support business insights and decision-making, collaborating with cross-functional teams to deliver data-driven applications and AI-enabled solutions.

Your profile: 3+ years of experience in Software Engineering, preferably in backend or data-focused systems, strong knowledge of Kotlin or Java for backend development, good knowledge of SQL and experience working with large datasets, experience building data pipelines or data processing workflows, experience working with cloud platforms (preferably GCP), basic experience working with data analysis or machine learning workflows, strong problem-solving skills and ability to work in cross-functional teams, very good command of English (spoken and written), openness to occasional on-site team meetings (up to once per quarter) in our Poznan or Warsaw office. Work from the European Union region and a work permit are required.

Nice to have: experience with Scala, Spark, or other big data processing tools, experience with Apache Airflow or similar orchestration tools, familiarity with ML platforms such as Vertex AI, experience with React or data visualization tools.