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ISSM / IT Support

Stellant Systems Melville, NY

Melville, NY

Today

$36 - $60/hr Full time Active Directory End User Support Endpoint Management

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Job Description

Onsite in Melville, NY, this ISSM / IT Support role helps keep end-user technology reliable and secure for both daily operations and high-priority executive needs. You will support desktops, laptops, servers, telecommunications, and systems, while partnering across IT to resolve issues, pre-test changes, and maintain confidentiality and contract security compliance.

What you’ll do

Provide IT Support for end-user devices, servers, telecommunications, and systems support.
Handle basic troubleshooting and break/fix for desktops, laptops (Windows), network issues, and printers.
Perform proactive upgrades and updates for computers and mobile equipment.
Support Microsoft Teams meetings onsite as needed, including troubleshooting iPhone devices.
Support the most critical executives with proactive IT assistance and timely response to senior-level needs.
Test and implement new technology used by admins, including ensuring pre-testing before deployment.
Act as a customer advocate, coordinating with other IT teams to manage and escalate issues through resolution.
Guide users through IT processes, knowledge base article usage, and end-user tools, with strong proficiency across the complete Microsoft tools suite.
Interface with all levels of Stellant personnel and government management to support contract security compliance requirements including:
- National Industrial Security Operational Manual
- DoD Manual 5205.07
- Contract Security Classification Specification (DD254)
- Program Classification Guides
Navigate business and technology processes effectively and efficiently while maintaining confidentiality and building trust with the customer base.

Core qualifications

Bachelor’s Degree in Computer Science, Information Technology, or related field (or equivalent experience).
Minimum 5+ years of IT support, including minimum 2+ years in a Tier 3 capacity.
Well-founded grasp of Tier 3 Support and strong troubleshooting skills.
Experience with Microsoft SCCM and Active Directory.
Proven knowledge of desktop support (Windows 10 experience desired).
Ability to write reports, business correspondence, user instructions, and procedure manuals.
Ability to balance business requirements with IT standards while supporting senior executives quickly.
Self-motivated and able to work independently or in a team environment with minimal direction.
Deep technical and business expertise paired with strong customer service.
Deep knowledge of configuring and supporting iOS mobile devices (including iPhone).
Advanced understanding of laptop/desktop hardware support.
Solid understanding of networks and end-user productivity tools, enabling effective assistance with network infrastructure troubleshooting.
Security self-inspection and risk mitigation responsibilities after training, including applying security measures to meet requirements and supporting customer assessments.

Technology stack

Windows
Windows 10
Microsoft Teams
Microsoft SCCM
Active Directory
iOS / iPhone

Additional skills (preferred, not mandatory)

CPSO training certificate
COMSEC custodian certificate or experience
Prior ISSO/ISSM (or alternate ISSO/ISSM) experience
Courier preparation procedures
Experience developing and implementing OPSEC plans
Knowledge of Access Control and Intrusion Detection Systems
Experience with DoD construction
Experience conducting investigations
Professional Certifications/Affiliations

Non-technical requirements

Highly motivated, organizationally savvy, and able to maintain a strong IT and security presence.
Self-starter with customer service orientation and ability to coordinate across multiple teams.
Strong team and project management skills, plus leadership presence across all organizational levels.
Excellent written and verbal communication, including technical writing.
Comfortable in a fast-paced environment, multi-tasking, and making quick, confident decisions.
Detail oriented: keeps detailed notes on tickets and maintains ordered, prioritized ticket workflows for urgent issues.

Compensation: USD 36 - 60 per hour. Experience level: 5+ years (with Tier 3 experience). Location: Melville, NY (onsite).

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