Systems Administrator

We’re looking for a Systems Administrator who thrives in complex, fast-paced environments and is ready to take ownership of enterprise IT infrastructure across multiple client environments.

This is a highly impactful role where you’ll act as a technical leader supporting critical systems, driving projects, mentoring team members, and partnering closely with IT leadership. WHAT YOU’LL DO:

Infrastructure & Systems Management

• Manage and optimize Microsoft 365, Windows Server, Active Directory, and cloud platforms (Azure/AWS)
• Maintain enterprise systems (SAN, firewalls, virtualization, networking)
• Perform ongoing maintenance (patching, backups, upgrades, monitoring)
• Implement high-availability and redundancy solutions

Project Leadership

• Lead 1-2 concurrent IT infrastructure projects (migrations, deployments, office moves)
• Support IT Managers/Directors with planning, execution, and resource coordination
• Contribute to system standardization and improvement initiatives

Advanced Support & Escalation

• Serve as the highest level of technical escalation
• Troubleshoot complex system and network issues
• Work directly with vendors and stakeholders during critical incidents

Security & Compliance

• Champion cybersecurity best practices (MFA, least privilege, monitoring)
• Conduct risk assessments and support compliance initiatives (CIS, NIST, etc.)
• Provide input into IT strategy, budgeting, and optimization

Client & Team Collaboration

• Build strong relationships with clients and internal teams
• Mentor junior IT staff and support training efforts
• Participate in a collaborative, high-accountability culture

Do you have experience in Windows support?, 5+ years of experience in systems administration or enterprise IT

Strong expertise in:

• Microsoft 365 (Exchange Online, Teams, SharePoint, Intune, Entra ID)
• Active Directory (GPOs, OU design, LDAP)
• Windows Server (DNS, DHCP, DFS, NPS)
• Networking (TCP/IP, DNS, VPNs, routing)
• Virtualization (VMware or Hyper-V)
• Cloud platforms (Azure)
• Backup solutions (e.g., Veeam, Azure Backup)
• PowerShell scripting

Preferred:

• Experience with security tools (Nessus, nmap, etc.)
• Knowledge of cybersecurity frameworks (CIS, NIST)
• Familiarity with compliance standards (SOX, HIPAA, CCPA, ISO)
• Exposure to Linux environments

4.04.0 out of 5 stars San Diego, CA 92127 $83,200 - $113,500 a year - Full-time, Pulled from the full job description

• Health insurance
• 401(k) matching
• Paid time off
• Employee discount
• Vision insurance
• Dental insurance

• Disability insurance, * Medical, Dental & Vision

• Life & Long-Term Disability Insurance
• 401(k) Matching
• Paid Time Off & Holiday Pay
• Professional Development
• Leadership Coaching
• Certification Reimbursement
• DoorDash Annual DashPass
• Columbia Sportwear Employee Discount
• Company Social Events

Founded in 2003, Infracore provides high-touch, end-to-end IT infrastructure support for mid-sized and enterprise, technology-focused organizations. We combine deep technical expertise with strategic guidance to help our clients scale securely and efficiently to drive performance and resilience.

We believe great work starts with great people. Our culture is built on collaboration, continuous growth, and a shared core values of Integrity, Trust, and Commitment, empowering our team to do their best work and grow their careers. We are deeply invested in helping both our clients and our team members succeed.