Yusuf Aran

I focus on making engineering teams more effective: improving developer experience, reducing friction in delivery workflows and turning messy technical problems into practical, sustainable systems. I combine hands-on software engineering with architecture, DevOps, testing strategy and the ability to drive improvements from idea to adoption.

Senior Software Engineer & DevX Lead

Sellwerk GmbH & Co. KG, Nuremberg - Since 10/20

• Built a Developer Experience dashboard combining system metrics and anonymous surveys, then turned its findings into cross-team initiatives through technical leadership and hands-on implementation; follow-up results showed participation rising from 60% to 90%, test-coverage satisfaction from 2.85 to 3.61 (out of 5) and average pipeline duration falling by 27%
• Established context engineering through OpenAgentsControl to standardize project knowledge and implement reusable AI workflows,

such as testing strategies and migrations

• Design and setup of frontend, backend, and end-to-end testing architectures, including a testing guide to reduce pipeline flakiness and improve performance
• Long-term hands-on contribution and technical leadership across multiple teams, with a focus on knowledge transfer, enablement, and the sustainable improvement of software quality
• Reduced monthly AWS test-environment costs by 30% through improved

CloudWatch metrics and EC2 auto-scaling as part of a major CDK upgrade delivered without downtime

• Co-led and implemented the company-wide migration from AWS

CodeCommit and CodePipeline to GitHub Actions, cutting CI/CD runtime by 66%, from approximately 60 to 20 minutes

Technologies used: TypeScript, AWS CDK, DynamoDB, ECS, Lambda, Nx, GitHub

Actions, Java, Spring Boot, Node.js, OpenCode, GitHub Copilot, Playwright, Jest,

Vitest, OpenSearch, Neo4j, Vue.js, Nuxt

Bachelor of Science in Computer Science