Systems Administrator – Corporate IT

Core BTS

Systems Administrator managing Microsoft 365 E5 suite in a remote corporate IT setting. Involvement in cloud and on-premises technologies with the ability to lead a team.

Posted 6/2/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSenior💰 $100,000 - $120,000 per yearWebsite

Tech Stack

Tools & technologies

AzureCloudDNSFirewallsLinuxSMTP

About the role

Key responsibilities & impact

Oversee the configuration, administration, and optimization of the Microsoft 365 suite, including Exchange Online, Teams, SharePoint, Intune, Defender, Azure AD / Entra ID, and Power Platform.
Regularly audit systems to ensure they are designed and operating to current best practices.
Mobile device management with Intune includes endpoint policies, configuration, package deployment, and provisioning.
Management of Exchange Online, including mail security such as SPF, DMARC, DKIM, and spam, malware, and phishing protection.
Implementation of Single Sign On for enterprise-wide applications utilizing Microsoft Azure AD / Entra ID.
Management of servers including latest Windows Server versions, Linux, and appliance based virtual machines.
Design, deploy, and administer HyperV virtualization systems in on-premises datacenters.
Design, deploy and administer cloud-based virtualization environments including Microsoft Azure.
Deploy, manage, and analyze infrastructure wide monitoring tools to ensure all systems are operating optimally.
Design and maintain internal networks for both datacenters and branch offices.
Management of Cisco / Meraki firewalls, routers, and switches.
Troubleshoot and resolve network-related issues and analyze root cause of failures to ensure design resiliency.
Responsible for circuit management and working with vendors as necessary.
Management of internal telephony via Cisco and Teams.
Develop and maintain Disaster Recovery (DR), High Availability (HA), and Business Continuity Planning (BCP) strategies for critical systems.
Ensures all platforms are deployed with appropriate backup and archiving strategies.
Conduct regular testing and drills to validate the effectiveness of DR, HA, and BCP plans.
Assist the IT security team with day-to-day security and compliance tasks.
Lead the vulnerability management program’s patching design, implementation, and monitoring.
Management of multi-factor authentication technologies.
Ensure processes and systems are implemented in alignment with existing compliancy and regulatory requirements.
Design, develop, and maintain IT integrations such as HR IS platform to Microsoft Azure AD / Entra ID.
Process automation such as user onboarding and offboarding script development.
Act as an escalation point for the help desk team to assist with complex trouble tickets.
Assist with the design and implementation of automated configuration for both Windows and Mac based endpoints.
Management of branch offices including networking, printing, and physical security.
Collaborate with various business and IT team members to ensure all designs meet requirements.
Develop documentation of processes and knowledge base articles for systems as they’re designed and deployed.

Requirements

What you’ll need

Bachelor’s degree in computer science, programming, information security, or a related field.
Equivalent work experience or certifications may be considered.
3 - 5 years of experience in systems administration with a strong focus on M365 E5 suite.
Team mentoring or leadership experience.
Demonstrated problem-solving and analytical skills.
Expert level knowledge in fundamental IT technologies such as DNS, DHCP, Certificates, SMTP, SNMP, SSL, SSH, DMARC, DKIM, SPF, web and application hosting, virtualization, physical security, etc.
In-depth knowledge of Cisco networking, including routers, switches, and firewalls.
Experience with integration development and maintenance, including scripting and programming.
Proficiency in HyperV virtualization and Azure cloud services.
Expertise in Disaster Recovery (DR), High Availability (HA), and Business Continuity Planning (BCP).
Mac management experience.
Excellent problem-solving and troubleshooting skills.
Proven ability to work independently and collaboratively in a team environment.
Proficient, or able to gain proficiency with, a broad array of platforms and tools.
Occasional travel and after-hours work are required.

Benefits

Comp & perks

Health, Vision, and Dental Insurance
Life Insurance
Health/Dependent Care Flexible Spending
401(k) Plan
Short-Term and Long-Term Disability Coverage
Generous Vacation and Flex Time Off Programs
Company Paid Holidays
Training and Development Opportunities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Microsoft 365Exchange OnlineTeamsSharePointIntuneAzure ADHyperVCisco networkingDisaster RecoveryBusiness Continuity Planning

Soft Skills

problem-solvinganalytical skillsteam mentoringleadershipcollaborationindependencetroubleshooting

Certifications

Bachelor’s degree in computer scienceinformation securityrelated field