Senior Data Engineer

Want to work on data infrastructure that powers cutting-edge crypto intelligence products? Growth and a great team culture matter to you?

Join a data engineering team supporting a global leader in blockchain analytics and help drive the technical direction of a data platform at the heart of its products. As a Senior Data Engineer, you will architect systems that process massive blockchain and off-chain datasets, mentor engineers, and shape critical infrastructure decisions. This role is suited to someone excited by large-scale distributed systems and ownership of essential infrastructure.

Tech environment

Scala, Spark, Databricks, AWS, Airflow, Kubernetes, Terraform, Functional Programming

As a Senior Data Engineer, you will be responsible for

• Architecting, designing, and implementing large-scale distributed data systems and pipelines that serve as the backbone of products
• Driving technical decision-making across batch and streaming data solutions, balancing scalability, performance, and long-term maintainability
• Exploring and integrating new technologies, including data orchestration tools and cloud-native solutions, to continuously optimise performance and scalability
• Contributing to platform-wide initiatives that improve reliability, observability, and cost efficiency across the data infrastructure
• Taking shared ownership of data systems from design through deployment and ongoing support, ensuring they meet the growing demands of blockchain analysis
• Collaborating with engineers, product managers, data scientists, and intelligence analysts to build customer-focused features and scalable architectures
• Mentoring engineers, performing thoughtful peer reviews, and championing best practices that raise the quality bar across the team

What we expect from you

• Proven ability to design, build, and maintain distributed data systems in a cloud-based environment
• Hands-on experience with big data frameworks such as Spark or Databricks
• Strong experience with Scala
• Solid knowledge of cloud infrastructure: AWS, GCP, or Azure
• Strong software engineering fundamentals: clean, testable, efficient code; maintainability; and building systems others can depend on for years
• Judgement to navigate trade-offs between scalability, performance, resilience, and cost, and communicate decisions clearly to technical and non-technical stakeholders
• Experience or genuine interest in functional programming, data modelling, workflow orchestration, or AI-driven tools
• A learning mindset, demonstrated through discussion of recent work, lessons learned, and motivation for data engineering
• English proficiency at C1 level or above for international client collaboration
• Polish language skills at B2 level or above for communication with the team

Great if you also bring

• Experience in stream processing frameworks and event-driven architecture
• Hands-on experience with Infrastructure as Code, including Terraform or CloudFormation
• Experience working in containerised environments, including Docker and Kubernetes
• Interest in crypto and blockchain technologies

What helps us stay balanced

• Dedicated training and wellbeing budget for skills and hobbies
• Work from home or office, with up to 100% remote work
• LuxMed healthcare package with access to specialists
• Multisport card
• Stable, long-term collaboration, no dress code, and a relaxed atmosphere
• Team activities including board games, city outings, go-kart races, laser tag, and team retreats