Rocket Lab is an end-to-end space company delivering responsive launch services, complete spacecraft design and manufacturing, payloads, satellite components, and more - all with the goal of opening access to space. The rockets and satellites we build, and launch enable some of the most ambitious and vital space missions globally, supporting scientific exploration, Earth observation and missions to combat climate change, national security, and exciting new technology demonstrations. Our Electron rocket has become the second most frequently launched U.S. rocket annually and has delivered more than 230 satellites to orbit, all while we work to develop Neutron, our upcoming medium-lift, reusable launch vehicle for larger constellation deployment. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope. The Mechanical Ground Systems Engineer I is responsible for Design, Build, and Maintenance of critical test facilities to support the Archimedes rocket engine and the Neutron launch vehicles. You'll collaborate closely with Engine Propulsion and Test Operations teams to develop requirements for test stand design. Your work will require technical discipline and expertise in mechanical design and build but will also require a strong understanding of instrumentation and test site operations.