05.06.2026
Senior Software Engineer, Data Platforms
OLAP, Relational Databases
Help build the core data platform behind real-time reporting and cross-channel analytics used by some of the world’s largest brands.
Start
ASAP
Duration
7kk+
Location
Helsinki, Hybrid, remote
Allocation
100%
This role focuses on the core data platform that ingests, transforms, and serves tens of billions of advertising data points for real-time reporting and analytics. The engineer will work on distributed data processing, OLAP performance, and reliable cross-channel data unification at significant scale.
In this role, you will:
In this role, you will:
- Design and build systems that support high-scale reporting and analytics workloads across massive datasets.
- Improve OLAP performance and optimize data access patterns to deliver low-latency, reliable query experiences.
- Develop solutions that unify data from multiple external advertising channels with varying structures and integrations.
- Own projects from definition through delivery, maintaining high standards for quality, reliability, and scalability.
- Collaborate with engineers across the platform and help raise the team’s technical bar through strong engineering practices and mentorship.
You will thrive if:
- You have strong experience building and operating data-intensive, high-scale systems in production.
- You bring hands-on expertise with OLAP workloads, query optimization, and analytical data access patterns.
- You are confident working with relational databases such as PostgreSQL or MySQL; experience with columnar databases is a plus.
- You can design systems that handle evolving schemas, diverse data structures, and third-party integrations.
- You take ownership of complex problems, communicate clearly, and work collaboratively across teams.
- You have ability and willingness to work in a hybrid capacity from Helsinki office 3 days a week
