p>A Day in Your Life at MKS: As a Principal Technical Support Engineer at ESI, an MKS Company, you will partner with the Engineering and Field teams to help solve both customer and engineering problems, help guide engineering in improving quality & process improvement and provide knowledgeable and timeline customer support. 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.