Software Engineer I (Onsite)

Date Posted:

2026-08-14



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:

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:

Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

This requisition is for an RTX intern converting to FT hire upon graduation.

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX.

What You Will Do

• Architecture, design, development, integration, and testing of embedded software for a network security appliances, including device management software, communication protocols, device drivers, and control plane security features.
• Work closely with a team software engineers to ensure implementation meets the product requirements.
• Socialize designs with team and integrates suggestions and changes as appropriate. Unit test software components to ensure module-level functionality and data structure consistency.
• Participate in design and implementation/code reviews of other team members.
• Work with implementation teams to derive and document appropriate designs for the problem space.
• Create required project documentation in support of contract deliverables. Including development plans, requirement and design specifications, and test documents.
• Independently manage time and prioritizes tasks to achieve results within cost and schedule constraints.

What You Will Learn

• Real-time embedded software engineering
• Crypto algorithms and implementation

Qualifications You Must Have

• Bachelor’s degree in Software Engineering, Computer Engineering, Computer Science, or related Science, Technology, Engineering or Mathematics (STEM) major obtained by start date.
• Proven experience in large complex software/hardware developments

Qualifications We Prefer

• Ideal candidates will have experience with software development using a high-level programming language (Rust, C++, C#, Java, Perl, Ada, VHDL) as well as hardware-software integration in real-time embedded systems.
• Crypto Algorithm experience.
• Experience with SysML and UML modeling tools
• Understanding of network security protocols and algorithms (e.g. TLS, SSL, encryption, OpenSSL, X.509 Certificates, etc.)
• Experience with Key Management Infrastructure (KMI-3300) and Over-The-Network-Keying (OTNK)
• Control plane implementation for Ethernet based Network Appliances
• Amazon Web Service virtual environment development

What We Offer

• Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX, we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.
• Relocation, if eligible

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.

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 62,900 USD - 119,700 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 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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