Crypto Software Engineering Intern Summer 2026 (Onsite)

RTX • Fullerton, CA

2d • Onsite

About The Position

Are you a dynamic and experienced Crypto Software Engineering Intern (Summer 2026) interested in an opportunity to work in the greater Los Angele area? Then join our Secure Processing Software team and contribute to programs that save lives and enable the freedoms we enjoy. Every day our extraordinary engineers are empowered for excellence and inspired to invent in an inclusive environment where work-life balance is an elegant solution, not a slogan. Our dynamic and diverse engineers develop demanding, trusted, superior solutions to make the world a safer place. We are looking for a proven and progressive leader to join our Software Engineering Center team in El Segundo, California, a suburb of Los Angeles. You will work with Collins professionals around the country who thrive in a culture that celebrates the contributions of its employees. You will continue your career in a challenging and collaborative workplace, joining a team with a tradition of achievement through thought and teamwork. Collins Aerospace, a RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio and expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market. Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions — whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you’ll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today. WE ARE REDEFINING AEROSPACE. This position is eligible for relocation. Please consider the following role type definitions 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. Regardless of your role type, collaboration and innovation are critical to our business and all employees will have access to digital tools so they can work with colleagues around the world – and access to Collins sites when their work requires in-person meetings. At Collins, the paths we pave together lead to limitless possibility. And the bonds we form – with our customers and with each other -- propel us all higher, again and again. Apply now and be part of the team that’s redefining aerospace, every day. 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. 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.

Requirements

• Requires a High School Diploma or equivalent and student must be pursuing a Bachelor’s or advanced degree in an applicable discipline.
• 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

Nice To Haves

• 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

Responsibilities

• 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.

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.

What This Job Offers

• Career Level: Intern
• Education Level: High school or GED
• Number of Employees: 5,001-10,000 employees