Principal Security Software Engineer (Starlink)

SpaceX; Bastrop (TX); On-site; USD 170,000 - 210,000; Full time

Job summary

SpaceX is seeking a Principal Security Software Engineer for Starlink to design and build security infrastructure across Starlink systems, including cryptographic services for routers, dishes, gateways, and satellites. You will drive security features, integrate secure boot principles, and collaborate with multiple teams to strengthen defenses while supporting scalable, global connectivity.

The role requires 8+ years in security software, proficiency in Python/C++/Golang, and a strong background

Qualifications

• Bachelor's degree in computer science or another STEM discipline; 8+ years of professional security software development experience, or 10+ years without a degree.
• Experience with Python, C++, or Golang.
• Experience designing security for OS, distributed systems, or large-scale infrastructure.

Responsibilities

• Design and build security infrastructure for Starlink, including cryptographic services and security-critical components.
• Develop security features for Starlink systems, including routers, dishes, gateways, and satellites.
• Integrate security into factory processes and support network services for this.
• Maintain production systems and improve security posture through implementation and guidance to other teams.
• Prototype and test security improvements.

Skills

Software engineering

Applied cryptography

Network security

Operating system security

Secure/Authenticated boot

Incident response

Vulnerability research

Education

Bachelor's degree in Computer Science or STEM

Job description

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars.

PRINCIPAL SECURITY SOFTWARE ENGINEER (STARLINK)

At SpaceX we’re leveraging our experience in building rockets and spacecraft to deploy Starlink, the world’s most advanced broadband internet system. Starlink is the world’s largest satellite constellation and is providing fast, reliable internet to millions of users worldwide. We design, build, test, and operate all parts of the system – thousands of satellites, consumer receivers that allow users to connect within minutes of unboxing, and the software that brings it all together. We’ve only begun to scratch the surface of Starlink’s potential global impact and are looking for best‑class engineers to help maximize Starlink’s utility for communities and businesses around the globe.

Skills

• Software engineering
• Applied cryptography
• Network security
• Operating system security
• Secure/Authenticated boot
• Incident response and adversary detection
• Vulnerability research

Being flexible, communicating clearly, and establishing and maintaining productive working relationships with other engineering teams are paramount to success. If you are passionate about building quality products, love the challenges of outsmarting adversaries, and want to make an impact on an inter‑planetary scale, then you will fit right in.

Responsibilities

• Design and build security infrastructure for Starlink, including cryptographic services and other security‑critical services
• Develop security features for Starlink systems, including our router, dish, gateways, and satellites
• Design security into factory processes and provide network services in support of this
• Maintain existing production systems and improve security posture via both direct implementation and recommendations to other teams
• Build prototypes and help identify, design, and test security improvements
• Further our mission of providing secure and reliable Internet to underserved communities

Basic Qualifications

• Bachelor's degree in computer science or another STEM discipline and 8+ years of professional experience in security software development; OR 10+ years of professional experience in security software development in lieu of a degree
• Experience with one or more software development languages (i.e. Python, C++, Golang)
• Experience designing and implementing security solutions for operating systems, distributed systems, or other enterprise/large‑scale infrastructure

Preferred Skills And Experience

• Experience contributing security improvements to complex systems
• Experience working with special purpose security hardware such as Trusted Platform Modules (TPMs) and Hardware Security Modules (HSMs)
• Fundamental understanding of network protocols; including the TCP/IP stack as well as UDP based protocols
• Experienced in navigating large, complex, interactive systems
• Flexibility, communicating clearly, and establishing and maintaining productive working relationships with other engineering teams
• Excellent communication skills, both written and verbal
• Ability to work both independently and in a team
• Demonstrated ability to deal with ambiguity and to learn new technologies quickly
• Advanced degree in a technical or engineering discipline

Additional Requirements

• Must be willing to work extended hours and weekends as needed

Itar Requirements

• To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C.
• 1157, or (iv) Asylee under 8 U.S.C.
• 1158, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here.

SpaceX is an Equal Opportunity Employer; employment with SpaceX is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.

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