System Administrator II

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11 days ago Requisition

Mutual Security Credit Union is a financial cooperative owned by the members it serves through its branches in Danbury, Norwalk, Shelton, Bridgeport, and Watertown. Headquartered in Shelton, Connecticut, MSCU has been servicing Fairfield, New Haven and Litchfield counties for over 70 years and takes pride in a total membership of over 28,000 and assets over $380 Million.

We exist to help our members and our communities thrive by providing thoughtful, reliable financial services rooted in integrity and respect. As an organization, we prioritize growth with purpose, supported by a proven commitment to internal development and career progression.

At MSCU, we believe our success is driven by our people. We work collaboratively across departments, prioritize open communication, and support one another in serving our members well. We are committed to creating an inclusive, respectful environment where employees are encouraged to grow, contribute, and build meaningful careers, not just hold jobs.

Mutual Security Credit Union is seeking a skilled Systems Administrator II to support and enhance our growing technology environment. This role is responsible for maintaining secure, reliable, and high‑performing systems that support daily operations and member services.

You’ll work across core infrastructure technologies including Microsoft 365, virtualization, identity platforms, and networking—while contributing to modernization and automation initiatives in a regulated financial environment.

Infrastructure & Systems

• Administer Windows Server, VMware/Omnissa virtualization, and SAN storage
• Manage Active Directory, DNS, DHCP, and Group Policy
• Support Microsoft 365 (Teams, SharePoint, One Drive)
• Oversee patching, backups, and disaster recovery processes

Security & Network Support

• Support firewalls, VPNs, routing, and network segmentation
• Monitor and respond to alerts from security tools (SIEM, EDR, vulnerability scanning)
• Partner with outsourced SOC for incident response and remediation

Operations & Support

• Manage user provisioning and access controls
• Maintain documentation, diagrams, and system runbooks
• Proactively monitor system performance and improve stability

Projects & Improvement

• Execute system upgrades and infrastructure changes
• Contribute to automation, optimization, and standardization efforts
• Recommend improvements to increase efficiency and scalability

Required Qualifications

• 3+ years of systems administration experience
• Strong experience with:
  • Microsoft 365 & Windows Server
  • Active Directory & identity management
  • Virtualization (VMware or Omnissa preferred)
  • Networking fundamentals

Preferred Qualifications

• Experience with Forti Gate firewalls and network troubleshooting
• Familiarity with regulated environments (FFIEC, GLBA, NIST)
• Relevant certifications (Microsoft, VMware, Cisco)
• Experience in financial services or similar industries
• Strong problem-solving and troubleshooting skills
• Ability to manage multiple priorities independently
• Attention to detail in a regulated, compliance‑driven environment
• Interest in automation, modernization, and continuous improvement

• Full‑time hours required, with additional hours as necessary to accomplish objectives, goals, and projects.
• Sitting the majority of the time.
• The ability to occasionally lift, push, pull or carry up to 50 pounds.
• Occasional bending, squatting, twisting, climbing, reaching above, at or below shoulder level, and kneeling.
• The ability to meet deadlines and maintain accuracy.
• The ability to effectively interact with all personality types in stressful situations.
• Excellent ability to communicate effectively.
• Occasional travel out of state.

The above information on this description has been designed to indicate the general nature and level of work performed by employees within this classification. It is not designed to contain or be…