Software Engineer II, Secret Clearance

Prattwhitney; El Segundo (CA); On-site; USD 76,000 - 144,000; Full time

Benefits offered by this job

Relocation assistance

Parental leave

Flexible work schedules

Educational assistance

Employee assistance program

Job summary

RTX El Segundo, CA is seeking a Software Engineer II to join its product development teams. This role supports the full software development lifecycle for military and commercial programs, focusing on real-time C++ applications and integration with systems engineering.

The ideal candidate has a STEM degree with 2+ years of experience in C++, Linux/VxWorks, and scripting, and must hold or be eligible for a Secret security clearance.

Qualifications

• Bachelor's degree in Science, Technology, Engineering or Mathematics (STEM) with at least 2 years of relevant experience.
• Experience in C++ design paradigms on Linux, VxWorks, or other RTOS.
• Experience in developing, testing, and integrating real-time software in C++.
• Experience with scripting in Shell/Perl/Python.
• Active and transferable U.S. Government issued Secret security clearance is required.
• U.S. citizenship required for security clearance eligibility.

Responsibilities

• Supports all aspects of the software development life cycle as part of a multi-disciplinary team.
• Supports new and legacy military and commercial programs from concept and requirements to design, development, integration, test, and maintenance.
• Provides creative solutions to complex technical system and software integration problems.
• Works closely with Systems Engineers to design optimal solutions that address end user and operational needs.

Skills

C++ design paradigms

Linux

VxWorks

Real-time OS

C++ real-time software

Shell/Perl/Python

Education

STEM degree

Tools

Linux tooling

Job description

Date Posted: 2026-08-17 Country: United States of America Location: US-CA-EL SEGUNDO-R01 ~ 2000 E Imperial Hwy ~ BLDG R01 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 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 Space and Air division in El Segundo, CA is seeking a Software Engineer II to be part of their product development teams. Raytheon El Segundo, CA

What You Will Do:

Supports all aspects of a software development life cycle as members of a multi-disciplined team. This would include supporting new and legacy military and commercial programs from concept and requirements, to design, development, integration, test, and potentially subsequent maintenance tasking. Uses and provides creative solutions to complex technical system and software integration problems. Works closely with Systems Engineers to design ideal solutions with the end user and operational needs in mind.

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++ design paradigms experience on Linux, VxWorks, or other Real Time Operating Systems.
• Experience in developing, testing, and integrating real-time software applications written in C++.
• Experience in computer scripting languages such as Shell/Perl/Python.
• Active and transferable U.S. Government issued Secret security clearance is required prior to start date.
• U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

Qualifications We Prefer:

• Additional experience in coding using C, C#, Java or closely related software languages.
• Experience working in lab environments with physical hardware (e.g., test benches, simulators).
• Ability to quickly understand and navigate complex systems and established code bases.
• Experience with product development utilizing the Scrum techniques of the Agile software development process.

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

Location and Travel:

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.

Salary:

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.

Benefits:

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.

Recruiting Information:

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.

Application Window:

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.

Equal Opportunity Statement:

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.

Company Overview:

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.