Sr. IT Systems Administrator

SilverTech, Inc.•Bedford, NH

1h•Hybrid

About The Position

SilverTech is seeking a Senior IT Systems Administrator to own and evolve our internal IT infrastructure. This role is responsible for the reliability, security, and scalability of the systems that support our 150+ person hybrid organization. You’ll be the most senior technical contributor on the IT team—designing, maintaining, and improving infrastructure end to end, serving as an escalation point, and acting as a trusted advisor to leadership. This is a hands-on role for someone who enjoys setting standards, owning systems, and proactively improving how technology supports the business.

Requirements

7+ years of experience in systems administration or infrastructure-focused IT roles.
Strong hands-on experience with Microsoft 365, Active Directory, Group Policy, and identity management.
Solid understanding of networking, security fundamentals, and endpoint management.
Experience supporting cloud-first or hybrid environments.
Ability to work independently, own complex systems, and prioritize effectively.
Strong troubleshooting and communication skills.

Nice To Haves

Azure infrastructure experience.
PowerShell or automation scripting.
Experience supporting professional services or digital agencies.
Familiarity with security or compliance frameworks (SOC 2, ISO, etc.).

Responsibilities

Own day-to-day operations, performance, and security of servers, networks, endpoints, and cloud services.
Design, implement, and maintain scalable, highly available infrastructure across on-prem and cloud environments.
Monitor system health, logs, alerts, backups, and proactively mitigate risks.
Plan and execute OS upgrades, patching, lifecycle management, and disaster recovery initiatives.
Architect and manage Active Directory, Group Policy, identity, and access controls.
Administer and optimize Microsoft 365, including Entra ID (Azure AD), Exchange Online, SharePoint, Teams, security, and licensing.
Establish best practices for identity, access, and endpoint management.
Design and maintain network infrastructure across physical locations (firewalls, switches, wireless, VPNs).
Develop and enforce security policies and technical controls to protect systems and data.
Act as an escalation point for complex infrastructure, network, and security issues.
Establish and document standards and best practices across infrastructure and endpoint management.
Maintain technical documentation and internal knowledge resources.
Research emerging technologies and recommend improvements.
Partner with leadership on infrastructure strategy, vendors, budgeting, and long-term planning.
Provision and manage hardware and software for new and existing employees.
Oversee asset inventory, lifecycle management, and vendor coordination.
Perform other related duties as assigned.