Senior System Administrator (Hybrid WFH / MSP) (Brooklyn)

We are a long-standing Managed Service Provider is seeking a System Administrator who enjoys solving complex technical issues, working directly with clients, and collaborating with a high-performing engineering team. This hybrid role is based in Oceanside NY, blending work from home, in-office collaboration, and hands-on technical ownership of multi-tenant MSP environments.

You will handle advanced support escalations, lead infrastructure deployments, and help strengthen client environments across Windows Server, Azure Entra ID, Microsoft 365, networking, and security. This role is ideal for someone who comfortable with handling MSP projects.

What You Will Do

Resolve higher-level escalations across servers, networks, cloud systems, and security

Support and troubleshoot Windows Server, Azure Entra ID, Microsoft 365, and Intune

Deploy and configure servers, switches, firewalls, and workstations

Perform proactive maintenance, patching, monitoring, and environment hardening

Assist with client onboardings, migrations, and O365 deployments

Conduct basic network and security assessments and recommend improvements

Collaborate with Tier 1 and Tier 2 technicians and provide mentorship as needed

Maintain accurate ConnectWise documentation and deliver strong client communication

What You Bring

MSP experience supporting multi-client environments

Strong skills with Windows Server, Azure Entra ID, Exchange Online, and Intune

Hands-on experience with SonicWall or Fortinet firewalls, switching, and wireless

Background with virtualization (Hyper-V or VMware) and backup solutions

Proficiency with ConnectWise Manage / Automate or similar RMM / PSA tools

Excellent communication, documentation, and client-facing skills

A reliable vehicle for occasional local visits if needed

Compensation

$100,000 to $110,000 depending on experience

Benefits

Health insurance

PTO

401(k) with company match