Matej contributed to the getsentry/sentry-wizard and getsentry/relay repositories, focusing on backend and CLI development with TypeScript and JavaScript. In sentry-wizard, Matej improved the Next.js onboarding process by clarifying Turbopack-related flags, reducing user confusion during setup through targeted feature enhancements and updated guidance. For getsentry/relay, Matej implemented an opt-in mechanism for AI-related PII scrubbing, allowing users to control data privacy settings for AI features. This work involved schema design and careful handling of privacy controls, enhancing both usability and transparency. Across both projects, Matej delivered well-scoped features that addressed specific user pain points and improved product clarity.