Contributed onboarding documentation enhancements to the open-energy-transition/handbook repository over a two-month period, focusing on streamlining new-hire integration and improving resource accessibility. Developed and updated Markdown-based onboarding guides, including a dedicated “Welcome to OET!” document and handbook page, to clarify scheduling with Cal.com and consolidate key contacts and procedures. Expanded documentation to cover high-performance computing service usage, Discord communication, and time-tracking guidance, ensuring consistent knowledge transfer across teams. Emphasized technical writing and documentation skills to accelerate onboarding and reduce friction for new hires. The work prioritized clarity, maintainability, and discoverability, supporting faster ramp-up and improved cross-team alignment.