Senior Principal Mechanical Engineer

Date Posted: 2026-06-02 | Location: McKinney, TX (onsite) | U.S. citizenship and an active, transferable DoD Secret security clearance are required on day one.

About the Role

Raytheon’s Airborne Sensor RF Design Department is seeking a Senior Principal Mechanical Engineer to perform section leadership, personnel management, and mechanical design, test, integration, and documentation for RF systems and sub-systems. The role involves following established procedures while working closely with program and functional leadership to meet technical, cost, schedule, quality, and performance goals.

Responsibilities

• Develop and implement technical solutions for complex mechanical engineering problems related to RF systems and sub-systems.
• Lead a section of technical personnel, facilitating career development and ensuring team objectives are met.
• Ensure work products meet cost, schedule, quality, and performance requirements.
• Collaborate with program and functional leadership to align technical goals with broader organizational objectives.

Requirements

• Typically requires a degree in Science, Technology, Engineering, or Mathematics (STEM) and a minimum of 10 years of relevant experience, or an Advanced Degree with at least 7 years of experience.
• Experience with mechanical design and integration of RF systems or sub-systems.
• U.S. citizenship (required for security clearance eligibility).
• Active and transferable U.S. government-issued DoD Secret security clearance (required prior to start date).

Preferred Qualifications

• Expert or mastery-level knowledge in mechanical engineering, often obtained through advanced education and extensive experience.
• Deep knowledge of project management and related disciplines within the work area.
• Ability to identify links and potential impacts on projects, programs, or systems.

Benefits

• Competitive total rewards package, including compensation, healthcare, wellness, retirement, and work/life benefits.
• Parental (including paternal) leave, flexible work schedules, and achievement awards.
• Educational assistance and child/adult backup care.
• Medical, dental, vision, life insurance, short-term and long-term disability coverage.
• 401(k) match and flexible spending accounts.
• Employee Scholar Program, paid time off, and holidays.
• Eligibility for annual short-term and/or long-term incentive compensation programs (dependent on role and performance).
• Relocation assistance based on candidate eligibility.

Pay

The salary range for this role is $132,400 – $251,600 USD. The final offer considers factors such as role, function, responsibilities, work experience, location, education/training, and key skills.