System Administrator II

Job Description

Job Description

System Administrator II

Location: Shelton, CT
Employment Type: Full‑Time

About Mutual Security Credit Union

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.

Our Workplace Culture

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.

The Opportunity

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.

Major Responsibilities

Infrastructure & Systems

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

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

• Provide Tier 2/3 escalated 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

Position Requirements

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 FortiGate 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

Physical and Mental Requirements

• 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.

Disclaimer:

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 interpreted as a comprehensive inventory of all duties, responsibilities and qualifications required of employees assigned to the job.

Why Join MSCU?

In addition to a competitive salary and lucrative benefits package, employees receive generous vacation and personal time off and delight in a variety of company sponsored events throughout the year. Our comprehensive benefits package includes:

• Medical, Dental, Vision Plans
• Life and Accidental Death and Dismemberment Insurance (100% employer paid)
• Accident and/or Illness Disability Insurance (100% employer paid)
• 401(k) Plan with Company Contribution
• Vacation, Holiday and Personal Time Off Pay
• Birthday PTO Day
• Mental Health PTO Day
• Volunteer Day – One paid day a year to support the causes that matter to you!
• Gym Membership Stipend
• Employee Referral Program
• Education Assistance Program
• Employee Wellness Program
• Leadership and Employee Development Training Programs

How to Apply

Interested candidates please submit your resume with salary requirement.

MSCU is an equal opportunity employer and is committed to fostering an inclusive and diverse workplace where everyone feels valued, respected, and empowered. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law.