Senior Systems Engineer – MANTIS SEIT (Onsite)

Collins Aerospace; El Segundo (CA); On-site; USD 96,000 - 182,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Three weeks of vacation

401(k) plan with employer matching

Job summary

Collins Aerospace in El Segundo, CA is seeking a Senior Systems Engineer in the MANTIS SEIT Department to support development, integration, and validation of resilient navigation systems for GPS receivers. You will collaborate with electrical, mechanical, software, and logistics teams, perform modeling and simulation, and ensure compliance with RTCA/MIL-STD standards.

The role is onsite; salary range is 95,500 USD – 181,700 USD. Sign-on bonus eligible; U.S.

Qualifications

• Experience in hardware/software development and testing.
• Experience with GPS receiver system design, integration and test.
• U.S. citizenship and ability to obtain DoD Secret clearance.
• STEM degree with 5+ years experience or advanced degree with 3+ years.

Responsibilities

• Develop and manage software and hardware requirements with traceability.
• Create and maintain systems engineering docs including test plans and reports.
• Support system integration, acceptance testing, troubleshooting, and verification.
• Collaborate with multidisciplinary engineering teams.
• Perform modeling and simulation including 6-DOF analysis.
• Contribute to design/analysis of guidance and navigation systems.
• Ensure compliance with RTCA, MIL-STD, ARINC and RTCA DO standards.
• Utilize test equipment to support development and testing.

Skills

Hardware/Software dev

System integration

Test engineering

Guidance/navigation systems

Agile development

JIRA

Confluence

Requirements management

Education

STEM degree

Advanced degree

Tools

DOORS

DOORS NG

Job description

Date Posted: 2026-11-10

Country: United States of America

Location: US-CA-EL SEGUNDO-E04 ~ 2006 E El Segundo Blvd ~ BLDG E04

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. 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 after day 1

Raytheon Company, Managed By Collins Aerospace Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defense industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defense.

Join our MANTIS (Mission Assured Nav, Timing, Inertials, and Sim) SEIT Department as a Senior Systems Engineer , where you will play a critical role in supporting the development, integration, and validation of resilient navigation systems. You will contribute to cutting-edge solutions that enhance GPS receiver and navigation technologies.

The (MANTIS) product line is responsible for providing U.S. and coalition forces with accurate GPS navigation capability to successfully achieve their missions—free of disruption and jamming. GNS solutions equip manned aircraft, unmanned systems, precision weapons, and ground systems. These products include anti-jam systems, integrated GPS/INS navigators, high-performance Selective Availability Anti-Spoof Module (SAASM) receivers, and Military Code (M-Code) receivers.

Sign-on Bonus Eligible

What You Will Do

• Develop and manage software and hardware requirements, ensuring traceability throughout the engineering lifecycle.
• Create and maintain systems engineering documentation, including test plans, test procedures, and test reports.
• Support system integration, acceptance testing, troubleshooting, and requirements-based testing/verification and validation.
• Collaborate with multidisciplinary teams of engineers, including electrical, mechanical, software, and logistics professionals.
• Perform modeling and simulation tasks, including 6-DOF analysis, to evaluate system performance.
• Contribute to the design and analysis of guidance and navigation systems, including GPS receiver system design, integration, and test.
• Ensure compliance with industry standards such as RTCA, MIL-STD, requirements.
• Utilize commercial test equipment, such as oscilloscopes and signal generators, to support system development and testing.

Qualifications You Must Have

• Experience in hardware/software development, system integration, and requirements-based testing.
• Experience with guidance and navigation systems, including GPS receiver system design, integration, and test.
• Experience with test equipment/tools, technical design reviews, and production readiness.
• Experience with Agile development and tools such as JIRA and Confluence.
• Experience with requirements development, management, traceability, and allocation for systems, software, and hardware.
• The ability to obtain and maintain a U.S. government-issued Secret security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience

Qualifications We Prefer

• Experience with Agile development and tools such as JIRA and Confluence.
• Proficiency in DOORS, DOORS NG tools for requirements management.
• Knowledge of industry standards such as MIL-STD-810, MIL-STD-461, MIL-STD-704, ARINC, and RTCA DO standards.
• Background in RF signal processing and experience with commercial test equipment, such as spectrum analyzers, logic analyzers, electronics, navigation (GPS or Inertial), modeling, and simulation.
• Familiarity with EVMS, ETCs, and ECPs.

What We Offer

• Medical, dental, and vision insurance
• Three weeks of vacation for newly hired employees
• Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option
• Tuition reimbursement program
• Student Loan Repayment Program
• Life insurance and disability coverage
• Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection
• Birth, adoption, parental leave benefits
• Ovia Health, fertility, and family planning
• Adoption Assistance
• Autism Benefit
• Employee Assistance Plan, including up to 10 free counseling sessions
• Healthy You Incentives, wellness rewards program
• Doctor on Demand, virtual doctor visits
• Bright Horizons, child and elder care services
• Teladoc Medical Experts, second opinion program
• May be eligible for Relocation
• And more!

#MISENG 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 95,500 USD – 181,700 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 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.