Senior Data Engineer

Ciklum is looking for a Senior Data Engineer to join our team full-time in Poland.

We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live.

About the role:

As a Senior Data Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. Together, we will work on the project building and scaling a digital platform used globally for learning, communication, and school management. This platform supports over 90,000 students across 24 countries and serves teachers, parents, and students with mission-critical functionality.

Responsibilities:

• Responsible for the building, deployment, and maintenance of mission-critical analytics solutions that process terabytes of data quickly at big-data scales
• Contribute design, code, configurations, and manage data ingestion, real-time streaming, batch processing, and ETL across multiple data storages
• Perform development, QA, and DevOps roles as needed to ensure total end-to-end responsibility of solutions
• Responsible for performance tuning of complicated SQL queries and data flows
• Identify gaps and improve the platform's quality, robustness, maintainability, and speed
• Cross-train other team members on technologies being developed, while also continuously learning new technologies from other team members
• Contribute to the unit's activities and community building, participate in conferences, and provide excellence in exercises and best practices

Requirements:

• 3+ years of experience with SQL, C#, Python and solid CS fundamentals (data structures, algorithms)
• 2+ years contributing to production deployments of large-scale backend data processing systems
• 1+ years of hands-on implementation experience working with a combination of the following technologies: Hadoop, MapReduce, Pig, Hive, Impala, Spark, Kafka, Storm, SQL and NoSQL data warehouses such as HBase and Cassandra
• 2+ years of experience with cloud data platforms (AWS / Azure / GCP)
• Experience with Databricks and Snowflake
• Strong understanding of professional software engineering practices and full SDLC
• Knowledge of data warehousing, optimization, data quality, automation, and validation
• Experience building BI reports and dashboards (Power BI, Tableau)
• Experience working in Agile teams (SCRUM)
• Experience designing key components in large distributed systems
• Proven track record of delivering high-quality solutions on complex cross-functional projects
• Experience supporting data scientists and advanced statistical use cases (nice to have)

What's in it for you?

• Strong community: Work alongside top professionals in a friendly, open-door environment
• Growth focus: Take on large-scale projects with a global impact and expand your expertise
• Tailored learning: Boost your skills with internal events (meetups, conferences, workshops), Udemy access, language courses, and company-paid certifications
• Endless opportunities: Explore diverse domains through internal mobility, finding the best fit to gain hands-on experience with cutting-edge technologies
• Flexibility: Enjoy flexibility – full remote working possibilities
• Care: We've got you covered with company-paid medical insurance, mental health support, and financial & legal consultations

About us:

At Ciklum, we are always exploring innovations, empowering each other to achieve more, and engineering solutions that matter. With us, you'll work with cutting-edge technologies, contribute to impactful projects, and be part of a One Team culture that values collaboration and progress.
With delivery centers in Wrocław and Gdańsk, our 300+ professionals in Poland drive forward-thinking solutions for global clients. Join a community where collaboration sparks innovation—and your impact reaches millions.
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Explore, empower, engineer with Ciklum

Interested already? We would love to get to know you Submit your application. We can't wait to see you at Ciklum.