Senior Systems Engineer (Onsite)

Raytheon is seeking a Senior Systems Engineer where you will play a vital role in designing, maintaining, and ensuring the operational readiness of complex systems critical to national security. This onsite position supports a 24/7 mission environment, requiring technical expertise, adaptability, and commitment to excellence. Location: Aurora, CO (Buckley)

What You Will Do

• Lead and execute preventive, predictive, and corrective maintenance activities for mission-critical systems and infrastructure, applying systems engineering principles to sustain availability, reliability, and operational readiness.
• Analyze system performance, identify degradation trends, and lead troubleshooting and root-cause analysis of complex hardware, software, and system-level anomalies.
• Develop and implement technical solutions and corrective actions to restore system capability, improve reliability, and reduce recurrence of equipment and system failures.
• Provide technical leadership during system anomalies, mission-impacting events, and environmental disruptions, coordinating troubleshooting efforts and supporting timely restoration of operational capability.
• Maintain system configuration integrity through engineering documentation, change control, baseline verification, and validation of hardware and software configurations.
• Evaluate system changes, maintenance activities, and operational impacts to ensure continued compliance with technical requirements, established procedures, and mission objectives.
• Develop, review, and improve maintenance procedures, technical documentation, troubleshooting processes, and engineering workflows based on operational experience and system performance data.
• Serve as a technical resource and mentor for engineering and maintenance personnel, providing guidance on troubleshooting, system operation, maintenance practices, and technical decision-making.
• Collaborate with systems engineering, operations, maintenance, program leadership, customers, and other stakeholders to resolve technical issues and ensure system readiness throughout the operational lifecycle.
• Support integration, verification, validation, testing, and implementation of system modifications, upgrades, and engineering changes within an operational environment.
• Perform hands-on engineering and maintenance activities as required, including work on antenna systems, elevated structures, and mission equipment in indoor and outdoor environments.
• Support 24/7 mission operations through rotating shifts, anomaly response, emergency support, and on-call assignments while providing senior-level technical expertise during critical events., * Experience performing preventive, predictive, and corrective maintenance on national security mission system critical infrastructure.
• Experience monitoring system performance and responding to equipment anomalies, failures, and environmental impacts.
• Experience with maintaining configuration control and documenting equipment changes.
• Support rotating 12-hour shifts, including days, nights, weekends, and holidays
• Experience safely ascending and working at heights using ladders and elevated work platforms.
• Experience handling equipment weighing up to 50 pounds and performing physically intensive tasks in various environments.

• Typically requires a Bachelor’s degree in Science, Technology, Engineering, or Mathematics (STEM preferred) and a minimum of 5 years of prior engineering experience or equivalent experience.

• Experience in performing maintenance, operations, or field service in complex technical environments (e.g., RF systems, satellite communications, large mechanical systems, industrial equipment, or similar).

• Experience with system integration, verification, validation, and supportability analysis.

• An active and transferable TS/SCI CI Poly U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, only U.S. citizens are eligible for the required security clearance.

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.

At RTX, the world’s largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Raytheon brings 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. We deliver solutions that help our nation and allies defend freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.