Senior Modeling Simulation Engineer Jobs in Krum, TX

Date Posted:

2026-07-31

Country:

United States of America

Location:

US-AZ-TUCSON-M02 ~ 1151 E Hermans Rd ~ BLDG M02

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

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 freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

The Advanced Effectors Guidance Systems department is seeking a Senior Principal Electrical Subsystem Architect to lead architecture development for next-generation missile guidance, control, and sensing electronics. This position defines and drives the technical direction for high reliability power conditioning, energy delivery, batteries, and precision analog subsystems that operate in extreme missile environments. The architect will evaluate, mature, and guide designs across a wide range of development stages—from early conceptual modeling through detailed design, integration, and transition to production.

What You Will Do

Chair technical reviews and set technical strategy and trade space across programs.
Own cross‑subsystem interfaces and drive complex multi‑disciplinary issue resolution.
Provide technical governance and adjudication across partner/supplier efforts; serve as technical authority.
Architect high reliability power systems and precision analog subsystems for guidance, navigation, and control electronics.
Lead power architecture trade studies, technology evaluations, and down‑selections aligned to performance, cost, producibility, and environmental constraints.
Assess and address designs with varying design maturity: early concepts, partially complete hardware, and near production configurations.
Identify gaps, risks, and improvement opportunities in immature or evolving designs, and mentor teams in closing those gaps.
Perform detailed analysis of power system loads, margins, thermal impacts, transient behavior, and electromagnetic compatibility.
Guide teams through component selection, derating, survivability requirements, and high‑reliability screening strategies.
Participate in and lead engineering reviews, readiness events, risk reduction activities, cross‑disciplinary integration efforts, and failure review boards.
Support hardware bring‑up, prototype evaluation, root‑cause analysis, and design refinement.
Coordinate with systems engineering, digital design, RF, modeling/simulation, GNC, thermal, and manufacturing disciplines to ensure robust and producible electrical power architectures.
Communicate with Chief Engineers, PMs, Technical Fellows, Directors/VPs/Executives.
Co‑optimization across electrical, thermal, structural, motor control, and mechanical impacts.
Support technology roadmaps and contribute to long‑term capability development across the portfolio, including assessments of various platforms for missile integration.
Influence over power architecture for next generation effectors and guidance systems.
Technical leadership with visibility across RTX Missiles & Defense.
Opportunities for advanced training, career development, and mentorship.
Mentors senior talent; investigates, evaluates, troubleshoots, and adjudicates partner/supplier work.
Present trade studies to stakeholders as needed.
Rapidly learn and apply new technologies; prototypes cutting‑edge solutions.
Focus on system trades, quantifiable decision‑making, and mandatory application of real‑world behaviors and military/aerospace specifications.
Qualifications You Must Have

Typically requires a Bachelors Degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience
Minimum of 10 years' experience in power electronics, analog design, mixed‑signal design, or high‑reliability electronics development.
Enterprise / cross‑company multidisciplinary architecture development.
Proficiency with SPICE simulation, modeling tools, and power/analog design best practices
Experience evaluating platform power requirements for weapon integration
Experiencing building platform roadmaps; evaluating and integrating cutting‑edge technologies.
Qualifications We Prefer

Advanced Degree such as Masters/ PhD
Must be able to obtain and maintain a U.S. Secret clearance. TS preferred.
Experience with missile systems, guidance electronics, harsh‑environment power systems, or seeker/power integration.
Hands-on experience with lab bring up, prototype testing, instrumentation, and failure analysis.
Effective SME negotiation across disciplines, contracts, and programs.
Modeling languages: VHDL‑AMS/MAST, State‑AMS; mixed‑signal and state‑aware models.
Demonstrated expertise in high‑density or high‑efficiency power conversion, power sequencing, energy storage interfaces, or precision power control.
Ability to analyze and troubleshoot designs at various maturity stages, including incomplete data sets, legacy architectures, and hardware already in build.
Experience with environmental qualification, MIL‑STD design, and systems operating in shock, vibration, and thermal extremes.
Understanding of EMI/EMC mitigation, grounding strategies, and system‑level power integrity.
Experience in program leadership, technical direction, or multi‑disciplinary coordination.
Mastery of harness effects, power quality, EMI/EMC, and Signal Integrity.
Working knowledge of: MIL‑STD‑704, MIL‑STD‑1275, MIL‑STD‑461, MIL‑STD‑464, MIL‑STD‑1553, MIL‑STD‑1760, RS‑422/RS‑485, Ethernet/TSN.
Familiarity with Model‑Based Engineering, requirements management, and digital engineering practices.

Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as:

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.

Hybrid: Employees who are working in Hybrid roles will work regularly both onsite and offsite. Ratio of time working onsite will be determined in partnership with your leader.

Remote: Employees who are working in Remote roles will work primarily offsite (from home). If you live within a reasonable commute of an RTX site with other colleagues you interact with, your manager will discuss whether there is a degree of onsite presence associated with this role.

Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee’s personal responsibility.

Requires expert or mastery level knowledge of work area, typically obtained through advanced education combined with experience.

May have deep knowledge of project management. Advanced knowledge of related disciplines within work area and ability to identify links and potential impact on projects, programs or systems.

Typically requires: A University Degree or equivalent experience and minimum 10 years prior relevant experience, or An Advanced Degree in a related field and minimum 7 years experience 

Engineering/Other Technical Positions: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience unless prohibited by local laws/regulations.

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 132,400 USD - 251,600 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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