Systems Engineer I - Mission Engineering (Onsite)

Date Posted: 2026-09-14



Country: United States of America



Location: US-CO-BUCKLEY-SFB-CUST ~ 18500 E 6th Ave ~ BUCKLEY SFB (External Site)



Position Role Type: Onsite



U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.​ 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 on day 1

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX.

This is an onsite entry level role located in Aurora, CO .

We are seeking an innovative and talented Systems Engineer to provide engineering support to a team responsible for maintaining and operating a high priority operational system at a high level of availability. The candidate must have the ability to be a technically minded problem-solver, be able to focus on the task at hand, follow through on the prescribed plan, and the ability to be flexible and think under pressure.  The ideal candidate would be highly motivated and have a strong desire to learn and have a team player attitude.

Top Secret/ SCI with Counterintelligence Polygraph is required prior to start. This process can take up to 15 months for issuance so Fall 2027 or later start is expected.

Not Relocation Eligible – Relocation assistance not available.

What You Will Do:

• Shadow engineers to learn the aspects of various teams.
• Evaluate system architecture and performance in context of mission requirements.
• Conduct trade studies, risk assessments, and mission impact analyses.
• Support modeling and simulation to validate mission effectiveness and system performance.
• Collaborate with system engineers and program managers.
• Provide technical input during design reviews.
• Support integration and testing activities to ensure mission objectives are met.
• Contribute to the development of mission threads, use cases, and test scenarios.
• Support operations planning and post-mission analysis if applicable.
• Ensure compliance with systems engineering standards and mission assurance guidelines

Basic Qualifications:

• Bachelor’s degree in Electrical Engineering, Computer Engineering or related Science, Technology, Engineering or Mathematics (STEM) major obtained by start date.
• Experience with software skills/Web development skills (PERL, JAVA, HTML/XML, C++, SQL, Wiki, JavaScript, MySQL, Linux).
• 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, as only U.S. citizens are eligible for the required security clearance.

Experience may be obtained through on-the-job experience, research, coursework, or projects. 

Preferred Qualifications:

• 3.0 cumulative GPA desired 
• Experience with Software Development processes.
• System Testing and diagnostic experience.
• Understanding of baseline development and delivery process.
• Experience involving customer engagement and reporting.
• Prior internship, co-op, or work experience.

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.

Learn More & Apply Now!

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.

This position requires ability to obtain a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: Security Clearance FAQs - United States Department of State

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 57,200 USD - 108,800 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.

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