Senior Backend Engineer -Kafka Platform

Back to all rolesSenior Backend Engineer -Kafka PlatformApplyJob detailsEngineeringStockholm, MilanFull-timekr 752,814 SEK - kr 843,151 SEKWhat You'll DoDevelop, 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 AreExperienced 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.Upload your resume to autofill the applicationUploadFirst name *Last name *Email *Dial codePhone numberLinkedIn profile *Please upload your resume (preferably as a PDF file) *Click or drag file to uploadSupported file format: .PDF; Maximum file size: 10.49 MB; Maximum file: 1;Mandatory Are you currently based in the location the job is posted in? *YesNoAre you legally authorised to work in the location where this position is based? *YesNoWill you now or in the future require sponsorship for employment authorization or visa status in the location this position is based? *YesNoAI disclaimerThis application process may use AI-enabled systems to support candidate evaluation based on factors such as experience, technical skills, and qualifications. All processing is carried out in accordance with applicable data protection, AI governance, and labour laws. Human oversight is maintained at all stages, and final hiring decisions are made by people. Personal data submitted as part of this application is not used to train AI models.I have read and understood the privacy policy and acknowledge that my personal data will be processed as part of this application.ApplyApplyHire withPrivacy Policy