Senior IT Systems Administrator: Windows, Linux & Cloud

Integrity Staffing Solutions; Newark (DE); On-site; USD 95,000 - 125,000; Full time

Job summary

Integrity Staffing Solutions in Newark, DE is seeking a Sr. Systems Administrator to join onsite and directly support the IT infrastructure portfolio, including Windows, Linux, Active Directory, and cloud environments.

You will guide planning and system integrity, administer and troubleshoot servers, manage AD, DNS/DHCP, and ensure security patches, disaster recovery readiness, and on-call rotations; develop automation and documentation.

Qualifications

• Advanced experience administering Windows and Linux environments.
• Strong Active Directory, Group Policy, DNS, DHCP expertise.
• Experience with virtualization, storage, and cloud infrastructure.
• Knowledge of backup and recovery, disaster recovery, monitoring, and vulnerability remediation.
• Experience with infrastructure automation, security patching, upgrades, and lifecycle management.

Responsibilities

• Administer and troubleshoot servers, hardware, operating systems, hypervisors, storage, virtual environments, and cloud infrastructure.
• Manage Windows and Linux systems and Microsoft technologies.
• Administer Active Directory, including user accounts, Group Policy, DNS, DHCP, authentication, and authorization.
• Support disaster recovery sites, web servers, business applications, backup and recovery solutions, and end-user technology.
• Implement and manage security patches, system updates, upgrades, and infrastructure enhancements.
• Develop automation, monitoring, alerting, reporting, and remediation tools.
• Identify business and technical needs and implement new hardware, software, applications, processes, and services.
• Troubleshoot incidents, address performance issues, and remediate infrastructure vulnerabilities.
• Participate in 24/7 on-call production support.
• Develop technical documentation, project plans, configurations, procedures, and system standards.
• Support infrastructure roadmaps, lifecycle planning, annual budgets, capital expenditures, and project schedules.
• Ensure compliance with company policies, cybersecurity controls, audits, licensing requirements, vendor agreements, and applicable regulations.
• Maintain and periodically test disaster recovery and business continuity procedures.
• Manage vendor relationships, evaluate technology solutions, and negotiate favorable contract terms.

Skills

Windows administration

Linux administration

Active Directory

Group Policy

DNS

DHCP

Cloud infrastructure

Virtualization

Automation

Security patches

Tools

None

Job description

Integrity Staffing Solutions in Newark, DE is seeking a Sr. Systems Administrator to join onsite and directly support the IT infrastructure portfolio, including Windows, Linux, Active Directory, and cloud environments.

You will guide planning and system integrity, administer and troubleshoot servers, manage AD, DNS/DHCP, and ensure security patches, disaster recovery readiness, and on-call rotations; develop automation and documentation.