Advanced Tactical Data Link/COMSEC Systems Engineer - Top Secret clearance - San Diego, CA

Clearance Level
Top Secret/SCI
Systems Engineering
San Diego, California
Onsite Workplace
Key Skills For Success

Communications Security (COMSEC)

Information Assurance

Tactical Data Links

Tactical Radios

Test Evaluation

REQ#: RQ146578
Requisition Type: Regular
Your Impact

Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department of Defense’s mission to keep our country safe and secure.

Job Description

GDIT is looking for a Senior Systems Engineer to support NIWCPAC Code 53500 in San Diego, CA.

Our work depends on a Senior Systems Engineer joining our team to provide both technical COMSEC engineering support as well as administrative and management aspects of Advanced Tactical Data Links (TDL) for our US Navy client. Join us as we help our Navy defend our country and advance the defensive capabilities of our allies. You will also work as part of a small collaborative team in delivering MIDS, Low Volume Terminal (LVT), JTRS, and TTNT COMSEC training to US and foreign military, integration facility engineers, and industry partners.

This position requires 25% OCONUS travel and candidates must have valid U.S. passport

In this role a typical day would include:

  • Provide Communication Security (COMSEC) engineering support to the Multifunction Information Distribution System (MIDS) Program Office for MIDS, Joint Tactical Radio System (JTRS), and Tactical Targeting and Networking Technology (TTNT).

  • Conduct Simple Key Loader (SKL) User Application Software (UAS) testing and user training.

  • Provide MIDS, Low Volume Terminal (LVT), JTRS, and TTNT COMSEC training to US and foreign military, integration facility engineers and industry partners, as required.

  • Conduct Host Initialization File (HIF) and Mission Planning File (MPF) encryption for all MIDS/JTRS/TTNT platforms for both NIWC-based and industry testing.

  • Provide real-time testing and troubleshooting of Link-16 COMSEC equipment use.

  • Provide oversight and support to the NIWC PAC Secure Internet Protocol Router (SIPR) room.

  • Perform MIDS JTRS software package NSA signature encryptions.

  • Support MIDS Program Office Information Assurance (IA) team meetings.

  • Respond and manage requests for Navy Link-16 legacy and crypto modernized keying material for US military, industrial partners, and international allies.


  • Active Top Secret

  • This position requires 25% OCONUS travel and candidates must have valid U.S. passport

  • Education: Bachelor’s degree in computer science, engineering, mathematics, or physics

  • Minimum of 5 years tactical systems analyst experience in DOD tactical communication systems projects.  An additional 3 years of experience (more than the 5 specified above) may be substituted for the education requirement

  • Current tactical communication system analysis experience (within the last 2 years) in Tactical Communications Systems to include TDL, ATDL, SDR, and/or related C4I systems.

  • Ability to provide Subject Matter Expertise (SME) related to Information Assurance (IA) evaluations involving Communications Security (COMSEC) and Cryptologic Material Systems (CMS) for ATDL systems.

  • Demonstrated experience in engineering and support of the MIDS Cryptographic Modernization (CM) efforts for MIDS JTRS waveforms Link-16 Tactical Communications systems and TTNT.

  • Demonstrated in-depth experience supporting U.S and Foreign Military Tactical Hardware Defined Radios (HDR) and Software Defined Radios (SDR) Systems for training and technical data calls in relation to cryptographic subsystems on the MIDS family of TDL Systems.

  • Outstanding written and verbal communication skills.

  • Ability to work on-site NIWC Pacific, Point Loma San Diego, CA

Desired experience:

  • Experience with the MIDS JTRS Cryptographic Modernization Program to include National Security Agency (NSA) requirements for Tactical Communication Systems with experience in Communications Security (COMSEC) and Cryptologic Material Systems (CMS).

  • Experience supporting the fielding of modernized cryptographic systems.

  • TDL/ATDL troubleshooting; analyzing requirements; requirements traceability; functional and performance T&E planning and execution.


  • 401K with company match

  • Comprehensive health and wellness packages

  • Internal mobility team dedicated to helping you own your career

  • Professional growth opportunities including paid education and certifications

  • Cutting-edge technology you can learn from

  • Rest and recharge with paid vacation and holidays

Work Requirements
Years of Experience

5 + years of related experience

* may vary based on technical training, certification(s), or degree

Travel Required



U.S. Citizenship Required

Salary and Benefit Information

The likely salary range for this position is $88,000 - $132,000, this is not, however, a guarantee of compensation or salary; rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
View information about benefits and our total rewards program.

About Our Work

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

COVID-19 Vaccination

GDIT does not have a vaccination mandate applicable to all employees. To protect the health and safety of its employees and to comply with customer requirements, however, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on customer site requirements.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.