• Own core backend services on Node.js; gradually overhaul complex distributed architecture – improving performance, stability and quality.
• Align with CEO, other executives on planning, post-incident analysis, process improvement.
• Write documents: architecture proposals, technical analysis for management, feature descriptions.
• Onboard and mentor new colleagues; communicate with clients regarding features and bugs.
• Built test infrastructure from scratch: wrote first tests in many projects; added API and browser tests – discovered old bugs and prevented new ones before release.
• Led a project to capture and automate manual scenarios from the business team – increased regression coverage while reducing manual testing burden.
• Led backend migration from JavaScript to TypeScript. Helped rebuild and modernize the frontend.
• Set up global tracing and alerting (code and infrastructure changes) – simplified bug analysis.
• Integrated LLM agents into CI/CD and alerting – better problem detection before release; faster incident response. Built LLM assistants so business colleagues understand tech side better.

• Developed core Node.js services and Java/Scala forks. Key project: providing Kafka, Cassandra, Spark and PostgreSQL as self-service for internal consumers.
• Migrated Kafka and supporting services from Cloud Foundry to Kubernetes; developed Go K8s operators.
• Developed internal Express.js rate-limiting library; extended Go CLI tools for automation.
• Gradually migrated JavaScript codebase to TypeScript via JSDoc.
• Ran knowledge-sharing sessions; supervised and helped working students.

• Developed React + TypeScript applications and a React component library.
• Developed frontend and backend of S/4 HANA Cloud apps.
• Wrote and organized full spectrum of tests, including unit, E2E and external manual tests.

• Developed analytics solutions for planning, tracking and reporting; analyzed business process data and software usage statistics.
• Coordinated workstreams for large testing initiative; supported PMO for company-wide program.
• Performed change management activities for project affecting over 1,000 employees.

Master's thesis: "Application of Self-Adaptive Dynamic Software Product Lines for Self-Driving Car Scenarios". GPA: 2.1.

GPA: 2.08 in the German system (original: 7.83).