Data Engineer

• Important:

This position is only for candidates legally residing in Poland and operating under a registered sole proprietorship (JDG). As part of onboarding, we kindly invite new joiners to our Warsaw office on the first day for a short introduction and identity verification. Please note that applications from outside Poland cannot be considered. About Us Sanoma Learning is the leading European learning company, serving over 20 million students in 11 countries. We offer printed and digital learning materials as well as digital learning and teaching platforms for primary, secondary, and vocational education. The development of our methodologies is based on deep teacher and student insight and really understanding their needs. By combining our educational technologies and pedagogical expertise, we create learning products and services with the highest learning impact. In our Technology organization, you will join the largest cross-cultural community of Sanoma Learning and contribute to the digital transformation and future of education in Europe. Project Description We are building a new product designed to facilitate the creation and adoption of AI-powered solutions. As a Data Engineer, you will join brand-new product teams developing cutting-edge AI tools for education, used by learners and educators across multiple European countries. Your role will focus on designing and implementing scalable data pipelines, integrating diverse data sources, and ensuring the quality, performance, and security of data processing in cloud environments. This is a unique opportunity to shape not only the product itself but also the data foundations, processes, and team culture from day one — making a tangible impact on how education evolves globally. Role Responsibilities We are looking for a Data Engineer to join our team and play a key role in designing, building, and maintaining our central data storage and processing layer. This role is ideal for someone passionate about data, cloud technologies, and emerging AI-driven solutions. Responsibilities

• Design, develop, and maintain data pipelines to ensure reliable, scalable, and high-performance data flows.
• Work on the central storage layer, ensuring data availability, consistency, and security.
• Collaborate with data scientists, analysts, and software engineers to support data-driven initiatives.
• Implement and enforce best development practices in code quality, testing, monitoring, and deployment.
• Optimize data infrastructure for performance and cost-efficiency in AWS environments.
• Leverage AWS services such as S3, Glue, Lambda, DynamoDB, and Athena to manage and query data.
• Contribute to projects involving Generative AI (GenAI) by enabling data access, preparation, and integration with AI-driven solutions.
• Troubleshoot and resolve issues across the data pipeline and storage systems.

Must-have Requirements

• Proficiency in at least one programming language, preferably Python.
• Strong knowledge of AWS cloud services (S3, Glue, Lambda, DynamoDB, Athena, etc.).
• Solid understanding of databases (SQL and NoSQL), including schema design, optimization, and query performance.
• Hands-on experience with data processing pipelines (batch and/or streaming).
• Strong foundation in software engineering best practices, including version control, CI/CD, and automated testing.
• Experience with data modeling, storage formats, and ETL/ELT workflows.
• Familiarity with Generative AI technologies and how data engineering supports AI-driven applications.
• Strong problem-solving skills and ability to work in a collaborative, agile environment.

Nice-to-have Requirements

• Knowledge of data orchestration tools (Airflow, Step Functions, Prefect).
• Exposure to big data frameworks (Spark, Hadoop).
• Understanding of data governance and security best practices.

Location 100% remote work Business travel and its frequency Occasional (2 to 4 times a year) What We Offer B2B contract for an indefinite period; Work-life balance and great atmosphere; Opportunities for professional development through interesting tasks. As an employer, Sanoma offers a working environment where you are able and encouraged to show your best self. The working environment is result-oriented as well as flexible with a focus on collaboration. We offer you a key position with interesting and challenging tasks and excellent opportunities for professional growth. You will be part of a highly professional and experienced international team in an open and informal setting, where initiative is expected and rewarded.