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About the Astek Group Founded in France in 1988, Astek Group is a global partner in engineering and IT consulting . Leveraging deep expertise across a wide range of industrial and technological sectors, Astek supports international clients in the development and delivery of products and services, while actively contributing to their digital transformation initiatives. Since its inception, Astek Group has built its growth on a strong culture of entrepreneurship and innovation , as well as on the continuous development of the skills of its more than 10,000 employees , who work every day on diverse and challenging engineering and technology projects. Join a rapidly growing group in France and worldwide, with 2024 revenues of €705 million . For more information, please visit: We are looking for an experienced Data Engineer / Backend Engineer with strong expertise in Scala & Apache Spark (or Java & Spark ) to support the modernization of a data processing platform within the C-Profit domain.The role focuses on designing, developing, and maintaining scalable backend solutions that consolidate and process transactional data related to investment banking financial products.The ideal candidate combines solid data engineering skills with a craftsmanship mindset, strong service quality orientation, and the ability to work in a complex banking environment with high data volumes and critical business impact. Key Responsibilities Design and define backend technical solutions and architecture for data processing platforms Develop and maintain scalable data feeds and batch/stream processing pipelines using Spark Implement data usage solutions, including data retrieval, transformation, and exposure through datasets and datamarts Support the migration and modernization of existing backend systems, including code review and technical adaptations during lift & shift migration to Azure Ensure scalable, reliable, and maintainable backend services with a strong focus on service quality Apply continuous improvement practices, including Craft & Prod CI methodologies Monitor code quality and ensure compliance with engineering best practices Participate in incident management, troubleshooting, and production support Collaborate closely with feature teams responsible for backend, data processing, UI, and API layers Required Qualifications 3–8 years of professional experience with Scala & Apache Spark or Java & Spark Strong problem-solving skills and ability to handle complex data processing challenges Hands-on experience in backend or data engineering within large-scale systems Service quality–oriented mindset with strong attention to reliability and maintainability Good understanding of software craftsmanship principles and engineering best practices Experience working in on-premise environments (no public cloud entry threshold required) Very good command of English (C1 level) Preferred Qualifications Experience working with banking or financial systems , especially investment banking data Familiarity with Big Data ecosystems and distributed data processing architectures Experience with CI pipelines, code quality monitoring, and production-grade data platforms Exposure to cloud environments (Azure) in migration or hybrid scenarios What We Offer Long-term collaboration – stability and ongoing career opportunities Technical training and certifications – continuous skill development and professional growth Mentoring through our Competence Center – from day one, become part of a community that allows you to enhance your skills, participate in conferences, and share knowledge with colleagues facing similar challenges Clear career path – transparent progression opportunities Employee benefits package , including: Multisport card Private medical care Life insurance Subsidy for public transport Friendly work environment – team-building events, social gatherings, and corporate parties Referral Program Do you know someone who might be interested in this offer? Take advantage of our referral program and earn a bonus of up to PLN 7,000 ! Link: Privacy Notice The administrator of your personal data is ASTEK Polska sp. z o.o. , located in Warsaw (00-133) at Al. Jana Pawła II 22. You have the right to access your data, request its deletion, and other rights regarding personal data. Detailed information on data processing can be found here: You may withdraw your consent at any time. To withdraw consent, please contact us via email at privacy@astek.pl or by writing to the data administrator at the address above. AO216568