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.Want to learn more about us? Follow us on Instagram, Facebook, LinkedIn.

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.