We win as a team and are committed to recruiting and hiring qualified applicants regardless of race, color, national origin, sex (including pregnancy and pregnancy-related conditions), religion, age, ancestry, physical or mental disability or handicap, marital status, membership in the uniformed services, veteran status, sexual orientation, gender identity or expression, genetic information, or any other category protected by applicable law. A Day in the Life at MKS: As a Principal Mechanical Engineer at MKS Andover, you will partner with R&D, Engineering, Product management, Applications, and customers to develop and support vacuum valves.