1742 - Junior System Administrator

Sigma Defense is seeking a motivated Junior System Administrator with a strong help desk background and solid communication skills. The ideal candidate will support daily IT operations, assist with system administration tasks, and help maintain a reliable technical environment for end users. This role is well-suited for someone early in their IT career who is eager to learn and grow within a dynamic team.

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.

• 1 - 2 years of experience in an IT help desk or technical support role.
• Strong customer service mindset and excellent written/verbal communication skills.
• Basic hands-on experience with Windows Server environments (e.g. Active Directory, Group Policy)
• Familiarity with Windows 10/11 administration and troubleshooting.
• Understanding of networking fundamentals (TCP/IP, DNS, DHCP)
• Must be a U.S. citizen.

• Bachelor's degree from an accredited college or university in Computer Science or related field of study.

• Candidate must possess or have the ability to obtain a Top Secret security clearance or higher.

• Provide Tier 1–2 help desk support for hardware, software, and network issues.
• Install, configure, and troubleshoot Windows desktops, laptops, and peripherals.
• Assist with basic Windows Server tasks including user account management, group policies, permissions, and routine maintenance.
• Monitor system performance and escalate issues as needed.
• Support incident tracking and documentation through the ticketing system.
• Help maintain inventory of IT assets and equipment.
• Contribute to onboarding and offboarding processes (accounts, equipment, access).
• Communicate clearly and professionally with end users, technical staff, and management.
• Follow established IT procedures and contribute to improvements where appropriate.