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Open nowPosted yesterday

Software Engineer II, Onsite

globalhr1,973 open roles

Where
US-CA-FULLERTON-675 ~ 1801 Hughes Dr ~ BLDG 675
Work mode
On site
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Your applicationOpen nowSoftware Engineer II, Onsiteglobalhr · US-CA-FULLERTON-675 ~ 1801 Hughes Dr ~ BLDG 675

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The clock on this job

Early applications get read.

7.8% of postings close within 7 days. Measured by our own scanner across the market. globalhr postings stay open a median of 1 days.

Share of postings closed within
  1. 1.6%1 day
  2. 3.4%3 days
  3. 7.8%7 days
  4. 14.3%14 days
  5. 33.7%30 days
This job: posted yesterday

globalhr median: 1 days open

The posting

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

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 75,800 USD - 144,200 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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