Sr Mechanical Engineer – Electronics Packaging

Company: Raytheon
Location: Tucson
Posted on: March 15, 2026

Job Description:

Date Posted: 2026-02-02 Country: United States of America Location: US-AZ-TUCSON-M10 ~ 3360 E Hemisphere Loop ~ BLDG M10 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: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required after day 1 At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. Our team solves tough, meaningful problems that create a safer, more secure world. The Mechanical Engineering group in the Shipboard Effectors Department seeking an experienced Mechanical Engineer REA (Responsible Engineering Authority) to contribute to the mechanical technical team for a common Guidance Unit (Stack). This role is primarily responsible for maintaining mechanical Technical Data Package (TDP) configuration changes, driving producibility updates, supporting failure investigations, supporting alternate component and material evaluations and testing, providing support across the full spectrum of mechanical, environmental, structural, and thermal engineering disciplines. Additionally, the mechanical engineer will be part of a small team of mechanical engineers, ensuring successful support of both production and development efforts. This is an onsite role and located in Tucson, Az. What You Will Do - Serve as the mechanical engineer to support documentation, mechanical, environmental, structural, and thermal aspects of different stack configurations. - Contribute to a small team of mechanical production REAs supporting mechanical production and development efforts, ensuring technical excellence and alignment with program objectives. - Oversee and manage all mechanical, slice and stack TDP configuration changes, ensuring updates address producibility improvements, yield optimization, and design enhancements. - Lead efforts to analyze and incorporate producibility updates into designs to improve manufacturing efficiency and reduce production defects. - Support failure investigations, conducting root cause analyses and implementing corrective actions to resolve systemic mechanical issues. - Provide technical guidance on mechanical design, analysis, and integration challenges, ensuring compliance with program requirements and performance specifications. - Drive design for manufacturability (DFM) practices and lead efforts to identify and implement cost-saving opportunities in mechanical assemblies. - Collaborate with cross-functional teams, including systems engineering, quality, and supply chain, to resolve mechanical engineering challenges and ensure seamless integration of stack configurations. - Provide oversight and review of hardware performance during environmental testing, including structural and thermal analysis, to ensure compliance with design requirements. - Maintain and update mechanical TDPs, processing engineering change requests such as IRs, CNs, SRs, and variances to ensure accurate and current documentation. - Positive attitude toward being mentored by experienced technical team members and subject matter experts within Raytheon. Qualifications You Must Have: - Typically requires a Bachelor's Degree in Science, Technology, Engineering, and Mathematics (STEM) and a minimum of 5 years of prior relevant experience or an advanced degree in a related field and minimum 3 years experience. - Five years’ experience in mechanical design and design documentation - Experience with 3D CAD tools (modeling and drawing) - Experience with Geometric Dimensioning & Tolerancing (GD&T) per ANSI Y14.5 - Experience with the packaging of electronics assemblies - Knowledge of environmental testing and hardware performance validation, including structural and thermal analysis. - The ability to obtain and maintain a US security clearance. U.S. citizenship is required as only U.S. citizens are eligible for a security clearance. Qualifications We Prefer - Strong interpersonal and communication skills; both verbal and written - Experience in mechanical sub-systems packaging, materials, interconnects, or large assembly development - Experience with managing engineering change processes, including IRs, CNs, SRs, and variances. - Proficient in Creo (modeling and drawing) and Windchill (PDM) - Strong understanding of design for manufacturability (DFM) and design for producibility (DFP) principles. - Active DoD issued security clearance - Experience working in the aerospace and defense industry. - Advanced degree in Engineering discipline What We Offer - Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation. - Please consider the following role type definition as you apply for 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. 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 86,800 USD - 165,200 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: Raytheon, Mesa , Sr Mechanical Engineer – Electronics Packaging, Engineering , Tucson, Arizona