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. Client builds infrastructure for payments across global markets. Its modular, flexible, and scalable technology enables leading companies to accept next-generation payments, provide a wide range of payout options, and leverage capabilities across card issuing, banking, risk, and fraud management services.
We are seeking a Senior Data Engineer to support a large-scale modernization of a global clearing and settlement platform. The role involves re-architecting legacy data pipelines, enabling AI-assisted migration, and building scalable, secure, and high-performance data systems for transaction processing, reporting, and settlement workflows.
Responsibilities:
Design and modernize complex ETL/ELT pipelines currently built on legacy systems for payments and settlement processing
Support migration of high-volume financial file systems (~68 daily files, 50+ formats) into a modern cloud-based architecture
Build scalable data ingestion frameworks for batch and near real-time transaction processing
Work on data transformation, validation, reconciliation, and file generation logic for clearing and settlement workflows
Collaborate on replacing legacy processor-based systems with a modern internal settlement engine
Implement data security, encryption (AES-256), tokenization, and PCI-compliant data handling practices
Enable AI-assisted data migration and intelligent file parsing using modern data engineering techniques
Work closely with product, architecture, and business teams to ensure accuracy of financial data flows and reporting systems
Optimize data pipelines to reduce latency, operational overhead, and processing costs (target ~60% efficiency improvement)
Requirements:
7–12 years of experience in Data Engineering or Data Platform roles
Strong expertise in Python, SQL, and distributed data processing systems
Experience with cloud data platforms (Snowflake, AWS, Azure, or GCP)
Strong knowledge of ETL frameworks, data modeling, and batch/stream processing
Experience handling high-volume transactional or financial data systems
Understanding of data security, encryption, and compliance standards (PCI preferred)
Experience working with file-based ingestion systems (SFTP, APIs, event-driven pipelines)
Familiarity with data governance, reconciliation, and auditability requirements
Desirable:
Experience in payments, fintech, or banking clearing/settlement systems
Knowledge of Kafka, Flink, or real-time streaming architectures
Exposure to AI/ML-assisted data transformation or LLM-based automation
Experience with legacy system modernization programs
Familiarity with HSMs, tokenization systems, and merchant acquiring flows
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.
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.
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