Principal Mechanical Engineer

Company: RTX
Location: San Jose
Posted on: April 3, 2026

Job Description:

Date Posted: 2026-04-01 Country: United States of America Location: US-CA-SAN JOSE-826 ~ 200 Holger Way ~ BLDG 826, Ast Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.? U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: TS/SCI with Polygraph Security Clearance Status: Active and existing security clearance required after day 1 Raytheon Company Managed by Collins Aerospace This role is primarily On-Site, with flexibility at hiring manager discretion. Applied Signal Technology (AST) is seeking a Principal Mechanical Engineer who strives for excellence and has a passion to be part of a team that strengthens our nation and improves the security of our world. AST provides trusted strategic and tactical SIGINT solutions that secure the interests of the U.S. and its partners. AST’s work in areas such as high-capacity broadband communications, signal processing and analysis, tactical SIGINT, and wireless communications continually challenge our extraordinary engineers to resolve problems and make the world a safer place. AST’s work environment is dynamic, highly collaborative, and provides engineers with the freedom to strengthen and expand their skills, explore new and creative ideas, and work closely with our nation’s finest service members all while embracing integrity, innovation and work-life balance. This is an ONSITE position located at our San Jose, CA location. To find out more about AST please, click the link below: Applied Signal Technology: WHO WE ARE What You Will Do: As a Principal Mechanical Packaging Engineer, you will be an integral part of team that develops creative mechanical solutions for standard and custom electronic packages using AutoCAD and feature-based parametric modeling tools such as SolidWorks Utilize thermal design practices and tools to analyze and develop mechanical solutions for challenging thermal environments Utilize structural design practices to analyze and develop mechanical solutions for environments that include shock and vibrational conditions Work effectively in multi-disciplinary teams Develop and maintain mechanical engineering drawings and other supporting documentation (parts lists, etc.) Utilize strong teamwork and communication skills Apply technical expertise to provide imaginative, thorough, practicable, and organizationally aligned solutions to a wide range of mechanical packaging challenges Up to 10% Travel expected Qualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience. Electro-mechanical packaging design background for assemblies and systems Experience in mechanical analysis to meet environmental requirements Working experience with SolidWorks and AutoCAD tools Working experience with thermal and structural analysis tools such as Ansys, SolidWorks Flow or IcePak Experience providing reliable mechanical cost/schedule estimates supporting proposal development activities Leadership experience in working with teams in design, implementation, integration, and test activities; including planning, estimating, and managing execution to meet schedule and cost targets The ability to obtain and maintain a U.S. government issued Top-Secret SCI (TS/SCI) with polygraph security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. Qualifications We Prefer: Ability to perform thermal design and using appropriate thermal analysis tools Ability to perform structural FEA for static, vibration, and shock loading using appropriate structural analysis tools Ability to develop and manage project cost and schedule at the task level Working knowledge of both Military and Industrial specifications Familiarity with EMI, EMC, and reliability specifications Working experience with military avionics Experience with aircraft integration and airborne environmental requirements analysis and verification Existing TS/SCI clearance with polygraph (Active within the last 24 months) What We Offer? Medical, dental, and vision insurance ? Three weeks of vacation for newly hired employees ? Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option ? Tuition reimbursement program ? Student Loan Repayment Program ? Life insurance and disability coverage ? Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection ? Birth, adoption, parental leave benefits ? Ovia Health, fertility, and family planning ? Adoption Assistance ? Autism Benefit ? Employee Assistance Plan, including up to 10 free counseling sessions ? Healthy You Incentives, wellness rewards program ? Doctor on Demand, virtual doctor visits ? Bright Horizons, child and elder care services ? Teladoc Medical Experts, second opinion program ? Eligible for relocation And More! Learn More & Apply Now!? Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you’ll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today. ? *Please ensure the role type (defined below) is appropriate for your needs before applying to this role. Onsite : Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. AST As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. The salary range for this role is 118,300 USD - 224,900 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills. Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement. Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance. This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply. RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act. Privacy Policy and Terms: Click on this link to read the Policy and Terms

Keywords: RTX, Tracy , Principal Mechanical Engineer, Engineering , San Jose, California