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Big Data Engineer with Spark (f/m/x) Miejsce pracy: Warszawa Technologies we use Expected Apache Spark SQL Optional Scala Java About the project Join our data engineering team, responsible for creating and evolving a next-generation data platform. This platform plays a key role in supporting a variety of business functions and engaging with multiple stakeholders across the organization. Your responsibilities Design, develop, and maintain scalable data pipelines and processing systems Build efficient solutions for collecting, transforming, and integrating data from diverse sources Translate business and analytical needs into technical requirements and data models Optimize data workflows to ensure high performance, reliability, and resilience Develop and maintain Spark/Scala-based jobs for data ingestion and transformation Participate in code reviews and contribute to continuous improvement initiatives Work collaboratively within an Agile (Scrum) environment, delivering business value in short iterations Follow best engineering practices such as TDD, BDD, clean coding, and DevOps principles Create and maintain technical documentation and test plans Our requirements Min. 5 years of professional experience in Big Data engineering, preferably in the banking or financial services sector Knowledge of Spark, SQL, and Java or Scala Working knowledge of additional tools and technologies such as Python, Java, Airflow, DevOps, CI/CD pipelines, APIs, microservices, and Git Excellent analytical and troubleshooting skills Strong communication and teamwork abilities Proactive, self-driven approach to work Ability to collaborate effectively with international teams across different time zones Solid organizational and prioritization skills Fluency in English and Polish, both spoken and written Open to a hybrid work model (2-3 days per week on-site) Residing in Poland required What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People Recruitment stages Send your CV Talk to us about your expectations Learn more about our projects and choose the best Start your adventure with Sii! Sii Sp. z o.o. Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment. Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.