Software Engineer II, Onsite

globalhr; Fullerton (CA); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Healthcare benefits

Retirement plan

Relocation assistance

Job summary

RTX in Fullerton, CA is hiring a Software Engineer II to design, implement, and deploy real-time mission-critical software onsite.

You will work in an Agile team using C/C++ and Python, participate in design reviews, CI/CD, and develop documentation while ensuring smooth integration with systems, test, and data engineers.

A STEM degree and at least 2 years of experience are expected; eligibility for a U.S. government security clearance and U.S. citizenship are required.

Qualifications

• Degree in STEM and at least 2 years of relevant experience.
• Experience in C/C++ and Python for application development.
• Experience across SDLC phases (design, code, test) for large systems.
• Ability to obtain and maintain a U.S. government security clearance; U.S. citizenship required.

Responsibilities

• Design, implement, and maintain software applications in C/C++ and Python.
• Work in an Agile team to develop real-time data processing across distributed systems.
• Participate in design reviews, CM, and automated testing in CI/CD.
• Collaborate with systems, test, and data engineering teams to integrate components.
• Develop technical documentation and contribute to design reviews.
• Some travel to customer sites for testing and deployment.

Skills

C/C++

Python

SDLC

CI/CD

Agile

Education

STEM degree

Tools

Linux

VxWorks

Real-Time OS

Job description

Date Posted: 2026-09-30

Country: United States of America

Location: US-CA-FULLERTON-675 ~ 1801 Hughes Dr ~ BLDG 675

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

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.

Our Software Department in Fullerton, CA is looking to hire a Software Engineer II to work onsite in Fullerton, CA. This role is for an experienced Software Engineer in developing and deploying software for real-time mission-critical systems.

What You Will Do:

• Design, implement, and maintain software applications using C/C++ and Python.
• Work within an Agile team to design, develop, test, and deploy software components that support real-time data collection, processing, and user interaction across distributed systems.
• Participate in design and code reviews, configuration management activities, and automated testing within a mature CI/CD environment.
• Collaborate closely with systems, test, and data engineering teams to ensure software components integrate smoothly and support overall system objectives.
• Develop and maintain technical documentation and contribute to formal design reviews.
• Some travel to customer sites for the purpose of testing and deployment.

Qualifications You Must Have:

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) AND a minimum of 2 years of prior relevant experience
• Experience in C/C++ and Python for application development, data processing, and automation.
• Experience across phases of SDLC including design, code, integration, and test of large system.
• Ability to obtain and maintain a U.S. government issued security clearance as and when required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer:

• Experience with the requirements development and flow down process.
• Experience with system or subsystem level Integration, Verification and Validation (IV&V).
• Familiarity with Agile lifecycle process including Scrum, Continuous Integration, and Test-Driven Development Methodologies.
• Development experience on Linux, VxWorks, or other Real Time Operating Systems.
• Experience in radar-domain software development, signal processing, and/or system integration.
• Experience working in lab environments with physical hardware (e.g., test benches, simulators).
• Knowledge of integration and testing of air, land or sea-based mission systems from SIL through flight test.
• Internship or project experience involving data pipelines, AI/ML integration, or cross-domain systems.
• Experience with test automation and CI/CD tools (e.g., Jenkins, GitLab CI).
• Well-developed communication, documentation, and problem-solving skills.
• Active U.S. government-issued security clearance (must be transferable).

What We Offer:

• A total rewards package that goes above and beyond with compensation; healthcare, wellness, retirement, and work/life benefits; career development and recognition programs.
• Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.
• Relocation Eligible – Relocation assistance available

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 a security clearance. DCSA Consolidated Adjudication Services (DCSA), 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: https://www.state.gov/m/ds/clearances/c10978.htm

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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