IT- Systems Administrator

Why You'll Love Working at ISN

We believe great employees deserve great support. Our comprehensive benefits package includes:

Comprehensive Medical Coverage with Prescription Benefits

Dental Insurance

Flexible Spending Accounts (FSA)

Company-Paid Short-Term & Long-Term Disability

Company-Paid Basic Life Insurance

401(k) Retirement Plan

Paid Time Off beginning on your first day of employment

Professional growth and leadership development opportunities

We are seeking a senior-level IT System Administrator with 8–10 years of experience to support

and maintain our IT infrastructure. This role manages servers, networks, Microsoft 365, voice

systems, and network storage appliances while providing advanced technical support.

Key Responsibilities

- Administer Windows servers, Active Directory, DNS, DHCP, and Group Policy.

- Support switches, firewalls, VPNs, and wireless networks.

- Configure and troubleshoot VoIP phones, call routing, and SIP/hosted voice systems.

- Maintain NAS/SAN storage appliances and shared drive environments.

- Manage Microsoft 365, Azure AD/Entra ID, Teams, and SharePoint.

- Provide Tier 3 support and handle complex technical escalations.

- Monitor backups, system performance, security patches, and updates.

- Maintain documentation, SOPs, and asset inventory.

- 8–10 years of experience in system/network administration.

- Strong expertise in Windows Server, Microsoft 365, and core networking.

- Hands-on experience with VoIP systems and network storage appliances.

- Strong understanding of security best practices and patch management.

- Ability to work independently and manage multiple priorities.

Preferred Qualifications

- VMware/Hyper-V experience

- PowerShell scripting

- Experience in compliance environments (NIST 800-171, CMMC)

- Certifications: Security+, Network+, Azure Administrator, CCNA, or similar

Position Summary

This role ensures stable IT operations, secure infrastructure, and advanced support across the

organization. Ideal for a seasoned administrator with broad hands-on experience.

ISN Corporation is proud to be an Equal Opportunity Employer.

We celebrate diversity and are committed to creating an inclusive workplace where all qualified applicants receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, disability, protected veteran status, genetic information, or any other status protected by applicable law.

ISN Corporation maintains a Drug-Free Workplace . All candidates must successfully complete a pre-employment background investigation prior to starting employment.