Senior Backend Engineer -Kafka Platform
DEEL · Stockholm, Sweden
No Swedish requiredPosted yesterday
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What You'll Do
- Develop, operate and maintain Klarna's shared Kafka clusters — ~150 nodes, 60 MiB/s ingestion, 120 MiB/s output, 125 TiB stored.
- Lead the design and implementation of core data streaming systems using Kafka, AWS, Iceberg, ECS, and S3.
- Drive architectural decisions with a clear view of Klarna's data landscape, downstream consumers, and cross-team dependencies.
- Derive technical requirements from the broader organization and deliver projects and integrations with minimal oversight.
- Lead technical work in cross-team initiatives.
What You Are
- Experienced building and running streaming platforms on AWS, including EC2 clusters and S3.
- Hands-on with Python, distributed systems, and infrastructure-as-code using Terraform and Ansible.
- Familiar with SSO, IAM, and AWS account setups for data platforms — able to balance security with ease of use for developers.
- Comfortable operating systems in production and improving them through monitoring, incident learnings, and iteration.
- Focused on building solutions that last and scale, not just solving the immediate problem.