To our valued Leidos candidates:

Coronavirus is on everyone's mind with the effects being felt around the world. The markets are volatile, and we're all concerned for the health and safety of our families, friends, and colleagues. Please know that we're taking all necessary measures to safeguard our employees, customers and the communities in which we live, including following all recommended best practices around social distancing.

With that in mind, in an abundance of caution, we are canceling all face to face career events, such as job fairs and open house events. In the coming days and weeks, we will be hosting career events virtually, using our online chat tools so that we may continue our hiring practice safely and securely. You can find available virtual career events at

We are using telephone meetings and online chats via Brazen to conduct interviews and hiring discussions, and we are offering options for video interviews so that you can have a virtual face to face meeting with your potential new leader. We do not conduct interviews or extend offers via text or chat based social media, such as WhatsApp or MySpace.

Leidos will never ask you to provide payment-related information at any part of the employment application process, nor will Leidos ever advance money as part of the hiring process. And Leidos will communicate with you only through emails that are generated by automated system. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to Chris Scalia, Leidos’ Senior Vice President of Talent Acquisition, at [email protected].

As a company, as a country, as a world, we have confronted challenging moments before. We are confident that, guided by our values and the strength of our community as well as the commitment we have to the important work we do each day, we will find our way through this time together. We will do this with the care and concern for one another and the common good that defines. Please keep those impacted by the virus in your thoughts.

Close Window
Join our talent network
Skip to main content

Job #: R-00062140
Location: San Diego, CA
Category: Cyber Infrastructure Support
Schedule (FT/PT): Full Time
Travel Required: No
Shift: Day
Clearance: Secret
Referral Eligibility: Eligible
Referral Bonus Amount: $5000
Group: Intelligence

This job posting is no longer active.

Share: mail twitter linkedin


Job Description:

Leidos is a global science and technology solutions leader working to solve the world’s toughest challenges in the defense, intelligence, homeland security, civil, and health markets. Leidos is seeking a Senior Satellite Communications Security Engineer to lead the engineering, design and implementation of the next generation of cryptographic product security, transport, and accountability for key and data for high and medium assurance applications.

Job Summary:

The selected candidate will provide senior engineering expertise to understand, document and design satellite communication security patterns and capabilities. These satellite network systems have exacting interface, performance and security requirements that must be analyzed and decomposed. This position will require someone who is meticulous and creative in problem solving.  More specifically in designing security focused solutions that address potential system vulnerabilities and associated mitigations.  

You will participate in the definition of system security requirements for a wide range of satellite architectures including but not limited to low-earth orbit (LEO) constellations that integrate small /cube/nano spacecraft. This requires an understanding of the unique constraints and interfaces to satellite spacecraft, approaches to integrating payload protection techniques, and approaches to protecting Telemetry, Tracking and Control  (TT&C) using cryptography and key management solutions. Lead or participate in the secure design of new products and features, vulnerability analysis of applications and devices, work with developers to communicate cryptographic security architectures In addition, this role will focus on high impact, creative solutions to complex technical problems, and work as part of a large team. This position will allow the successful candidate to develop and execute a set of integrated plans and technical artifacts that will enable the program to meet technical performance parameters and achieve mission success.

He/she will become part of a team of Security Engineers working on solving challenging issues on a nationally significant defense program. The selected individual will collaborate with other engineers and technical experts in providing improvements to our operational, test, integration, and development systems.  

Position responsibilities will include:

  • Lead system engineering, hardware, and software analysis to support the Navy’s Key Management project portfolio, including satellite communication security.
  • Define and apply systems engineering processes to develop systems and solutions that meet customer requirements.
  • Manage requirements, including decomposition, allocation, verification, and validation for subsequent use by the development and test teams.
  • Define and develop System Architecture, CONOPS, and use cases using systems engineering methodologies.
  • Participate and lead discussions at customer meetings, working groups, and technical interchange meetings associated with the work performed in this project.
  • Research, design, write, and review a wide range of technical documentation that will include but not be limited to: technical manuals, design specification documents, interface requirements specification, system user guides, reference manuals, installation guides, and data sheets that may be required to assist with the design, integration, testing, and fielding of the system; will provide project briefing materials upon request.
  • Option to work a 9/80 work schedule (i.e., 9 hour days, then work 8 hours on first Friday and off the second Friday)
  • Relocation assistance available to move to San Diego, CA.

Required Qualifications:

  • Bachelor’s of Science Degree in Engineering, Computer Science, or related field and 9+ years of experience or Masters with 6+ years of prior relevant experience.
  • Position requires US citizenship and an active Secret DoD security clearance.
  • Demonstrated experience in requirements decomposition.
  • Experience that demonstrates ability to analyze risks and uncertainties and ability to navigate projects through established processes.
  • Understanding complex system development methods.
  • Knowledge working with software development methodologies such as TDD, Peer programming, debugging
  • Knowledge of software design patterns.
  • Knowledge of Agile Development methodologies.
  • Excellent verbal and written communication skills.
  • DoD 8570 approved security certification (i.e., Security +) (Will be required 90 days after hire).
  • BS degree and 12 – 15 years of prior relevant experience or Masters with 10 – 13 years of prior relevant experience.

Desired Qualifications:

  • An understanding of the unique threats to satellite systems and the role that cryptography plays in mitigating those threats
  • An understanding of satellite communication architectures and security approaches applicable to these architectures
  • An understanding of the constraints to encryption and key management introduced by the space domain, including performance, latency, etc.
  • An understanding of satellite payload waveforms and associated mission cryptography
  • An understanding of cryptographic key management approaches to securing communication confidentiality and integrity on satellite and within ground stations
  • An understanding of cryptographic security for satellite TT&C
  • An understanding of transec keystream generation approaches for secure satellite communication
  • Knowledge of new approaches to satellite communication, including mesh networks, optical Intersatellite link encryption, and the use of cloud processing of satellite downlinks
  • An understanding of the cryptographic products currently in use within various satellite constellations
  • An understanding of how HAIPE is used within satellite constellations

Working knowledge and experience with computing and related technologies preferred including:

  • Scripting support such as Python, bourne/c shell/k shell/ bash
  • Structured Query Language (SQL)
  • Collaboration tools like MatterMost, Teams
  • AI related frameworks such as pytorch, tensor flow
  • Database design, configuration, replication, backup, archive, and restore
  • Continuous integration environments (e.g., Jenkins, GitLab-CI).
  • Familiar with software languages such as C/C++, C#, Java
  • Understanding of Cryptographic Key Management based on EKMS and KMI.
    • COMSEC Operations and Accountability
    • Transfer, receipt, accounting, inventory, reconciliation, and reporting
    • Warehouse operations, receiving, distribution, reporting, and automation
  • Familiarity with Agile processes including
    • Agile / Scrum
    • Tools and environment such as jira, VersionOne
    • Agile use, automation, configuration, tracking, and optimization
  • Detailed knowledge of Networking and Interface technologies including
    • Web services including RESTful and SOAP
    • Documentation with IETF/RFCs
    • OpenAPI standards
    • ASN.1 constructs, usage, compilers, and implementations
  • Understanding of Security requirements and implementation including
    • Authentication, integrity, and confidentiality services and implementation
    • Public Key Infrastructure with trust chains, certificates, revocation checking, cert validation
    • Cryptographic mechanisms such as SHA, HMAC, Elliptic Curve, and quantum resistance approaches
    • Cryptographic Message Syntax (CMS)
    • Security monitoring including gathering, reporting, and response using SIEM
    • Security frameworks adhering to STIGs, RMF

Pay Range:

About Leidos

Leidos is a Fortune 500® technology, engineering, and science solutions and services leader working to solve the world’s toughest challenges in the defense, intelligence, civil, and health markets. The company’s 47,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $14.4 billion for the fiscal year ended December 30, 2022.   For more information, visit

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

This job posting is no longer active.

Related Opportunities

Talent Community

Join our Talent Community to create a profile, enabling a streamlined application process and to help our recruiters better understand your areas of expertise and interest.

Join our Talent Community