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Systems Engineer I - Modeling, Simulation & Analysis (Onsite)

RTX
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Tucson, AZ, USA
Sep 20, 2026

Date Posted:

2026-09-14

Country:

United States of America

Location:

US-AZ-TUCSON-9020 ~ 9020 S Rita Rd ~ BLDG 9020

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:

DoD Clearance: Secret

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.

The Processing, Guidance & Control (PG&C) Center, within the Systems Engineering Directorate, consists of Signal Processing, Guidance, Navigation and Control as well as Modeling, Simulation Analysis (MSA) disciplines. PG&C delivers key technologies to our effector programs portfolio. The MSA teams are responsible for product-level simulations that help us design, develop, verify, and validate our products and capabilities. Our simulations model the components and subsystems that make up our designs, and the world our products interact with.

This is an Entry Level Role onsite in Tucson, AZ

What You Will Do:

As a Modeling, Simulation and Analysis Systems Engineer I, you will create high fidelity simulations and models for missile design, performance assessment, and flight test support. You will be responsible for the development and implementation of modeling solutions and subsequently conduct trade studies and evaluation of system and subsystem performance.  You will work in a team environment, receiving input from the team supervisors and providing guidance and/or direction to other team members. You will collaborate with Guidance, Navigation & Control, Signal Processing, and other performance personnel to perform simulation activities according to the program schedule.  You will work on projects, determine, and develop approaches and solutions, and provide development guidance throughout the product lifecycle from initial concept to fielded product.  You will provide technical expertise for the simulation products of a specific program and assist Senior Modeling Engineers in the preparation of detailed plans, and may interact with government counterparts as an authority on simulation products.  You will develop documentation, execute plans, analyze data, verify requirements, and effectively communicate results to leadership and stakeholders.

Qualifications You Must Have

  • Bachelor’s degree in science, Technology, Engineering, or Mathematics, (STEM) obtained by start date
  • Experience applying object-oriented software design in C++, C, and using MATLAB and Python for evaluation of data sets
  • Experience developing or simulating physical systems
  • Experience in modeling, simulation, statistics, or analysis for existing or proposed engineering solutions
  • Experience may be obtained through job experience, research, coursework or projects

Qualifications We Prefer

  • Leadership experience managing others using applied system engineering principles, experience working on a team and by yourself, interfacing with multiple engineering disciplines and developing and presenting technical briefings
  • Experience developing signal processing / GNC algorithms or models for missile applications
  • Experience with Control Hardware Design and Test, hardware/software integration, modeling physics and physical systems as related to flight dynamics
  • Experience using UNIX/Linux based workstations and using Software Configuration Management tools
  • Course work or experience in some of the following fields: radar, signal & image processing, radar and/or EO/IR environment models, digital communications, probability and statistics, linear algebra, estimation theory, optimal control, system architecture, inertial navigation, guidance theory

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.
  • Relocation Eligibility

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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Job ID

01873633

Security Clearance

SECRET
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