1742 - System Administrator
- Salary
- $70,000 - $90,000 annually
- Level
- Senior
Not stated in the posting: work type, visa.
Open. First seen 3 October 2026.
About the role
Sigma Defense is seeking a Lotus Domino Systems Administrator to support our 5-year program to provide systems administration and technical support at Naval NOCs, MOCs, Tactical Operation Centers (TOC), and afloat units. The candidate will work closely with government site engineers and military personnel to support integration, configuration, and Operational Support in Joint Base Pearl Harbor-Hickam (JBPHH) Wahiawa Annex, HI. This involves coordinating troubleshooting across the systems, ensuring interoperability, and maintaining seamless services during both normal operations and contingency situations.
Sigma Defense's standard text
Equal Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
Requirements
- 5+ years of IT experience.
- 1 year of experience in Server Administration (Windows, RHEL, etc.).
- Training on Lotus Domino will be provided.
- Must be a U.S. citizen.
Mandatory Certifications:
- IAT II (ex. Security+)
Computer Programs/Software:
- TeamStudio
- Build Manager
- WebInspect
- Confluence
- JIRA
- Trelix
Personnel Clearance Level:
- Candidate must possess or have the ability to obtain an active TS/SCI security clearance.
Education Requirements:
- Bachelor's degree from an accredited college or university in Computer Science or related field of study.
Essential Job Duties (not all-inclusive):
- Provide tier 1-3 service desk support.
- Provide systems administration support to Fleet commands for Fleet exercises and operations led by Fleet.
- Support commanders or Joint Task Force (JTF) Commanders.
- Planning, implementing, and troubleshooting program systems and their dependencies, as well as other technologies used by Naval Commands involved in maritime operations related to the program's interests.
- Develop and provide System Administration support to the program’s ecosystem; administer that which drives the creation and delivery of program information technology products and services.
- Manage and administer e-mail systems and their corresponding or associated software and hardware.
- Administer messaging systems access and support efforts for remote users.
- Create private and public mailing databases, address books, and shared mail applications.
- Monitor and analyze e-mail system activities to ensure maximum performance, efficiency, and availability.
- Analyze service and application usage and plan for growth or increases in network capacity.
- Manage and operate Domino Infrastructure across multiple networks, enclaves, and communities of interest.
- Offer technical support in system configurations, upgrades and modifications.
- Assist ship’s force with ship-to-shore connectivity issues between ashore and afloat systems.
- Support Information Assurance (IA) initiatives at the NOCs.
- Assist with NOC restoral procedures, providing rapid response for emergent issues, and creating network documentation and training for Fleet NOC personnel.
- Support Fleet, Joint and Coalition exercises, including after-action reports to identify and resolve potential problems.
Salary Range: $70,000 - $90,000 annually.
Benefits
- Dental and Vision Insurance
- Medical Insurance to Include HSA, FSA, and DFSA Plans
- Life and AD&D coverage
- Employee Assistance Program (EAP)
- 401(k) Plan with Company Matching Contributions
- 160 Hours of Paid Time Off (PTO)
- 12 (Floating) Holidays
- Educational Assistance
- Highly Competitive Salary
What this role asks for
Particular to this role
Jira
Rare in Sigma Defense's other 33 open postings.
90% of this description is written for the role. The rest is Sigma Defense's standard text, folded away below.
Read against Sigma Defense's other open postings on this site.
The team: IMS (IMSENG, IMSPRG, IMSNM, IMST&R)
This role is one of 9 open in IMS (IMSENG, IMSPRG, IMSNM, IMST&R). 8 were posted in the last 30 days.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Cybersecurity (5 of 9), Python (5 of 9), Linux (4 of 9), Ansible (3 of 9), Cisco (3 of 9), PowerShell (3 of 9), VMware (3 of 9)
OTHER ROLES ON THIS TEAM
- 1655 - Senior Software Developer posted Oct 14
- 1778 - Web Developer posted Oct 14
- 1699 - Network Engineer IV posted Oct 14
- 1760 - Application Developer posted Oct 14
- 1335 - Systems Engineer III posted Oct 14
- 1519 - Systems Engineer III posted Oct 13
- 1520 - Network Engineer I - III posted Oct 13
- 1751 - Senior Systems Analyst: Training Technical Assessment SME posted Sep 15
From the team and dates on Sigma Defense's own job board.
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