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RTX · 11 hours ago

Crypto Software Engineering Intern Summer 2026 (Onsite)

HCA45: Fullerton, CA Bldg 675 1801 West Hughes Drive Building 675, Fullerton, CA, 92834 USA

Internship

Onsite

Intern

$42K/yr - $88K/yr

Start in 2026 Summer

RTX is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry, and they are seeking a Crypto Software Engineering Intern for Summer 2026. The intern will work with the Secure Processing Software team to develop embedded software for network security appliances, contributing to a collaborative and innovative environment.

AerospaceManufacturingSecuritySensorTelecommunications

No H1B

Security Clearance Required

U.S. Citizen Only

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

Qualification

Embedded software developmentCrypto algorithmsNetwork security protocolsHigh-level programming languagesSysMLUML modelingKey Management InfrastructureControl plane implementationAWS developmentTeam collaborationTime management

Required

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

Preferred

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

Benefits

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

Holidays

Company

RTX

Glassdoor3.8

RTX is comprised of three market-leading businesses – Collins Aerospace, Pratt & Whitney and Raytheon – working as one to answer the biggest questions and solve the hardest problems in aerospace and defense.

Founded in 1922