Infrastructure Engineer

Top Prospect Group; Hartford (CT); On-site; USD 84,000 - 94,000; Full time

Job summary

A leading IT firm in Hartford, Connecticut, is seeking a Tier 3 Engineer to solve complex technical challenges and lead infrastructure projects. The role involves overseeing cloud migrations, managing Microsoft 365 environments, and mentoring junior team members. Ideal candidates will have over 5 years of experience with expertise in Microsoft 365 and advanced troubleshooting skills. Competitive salary between $84-94K offered in a full-time, onsite position.

Qualifications

• 5+ years of experience in a senior technical role.
• Strong expertise with Microsoft 365, Windows Server, Hyper-V/VMware, and network infrastructure.
• Familiarity with security tools (MDR, EDR, antivirus) and VoIP systems.

Responsibilities

• Be the final escalation point for technical issues and provide expert-level troubleshooting.
• Lead cloud migration projects (on-prem to cloud, tenant-to-tenant, cross-platform).
• Manage and secure Microsoft 365 and on-premises server environments.
• Oversee network infrastructure including firewalls, switches, and wireless access points.
• Design and deploy security solutions such as MFA.
• Document processes, deliver training, and mentor junior team members.
• Respond to high-priority incidents and support after-hours on a rotating basis.

Skills

Advanced troubleshooting

Project leadership

Mentorship

Expertise in Microsoft 365

Network infrastructure

Cloud migration

Tools

Windows Server

Hyper-V

VMware

Firewalls

VoIP systems

Job description

Are you a senior IT pro who thrives on solving complex technical challenges and leading high-impact projects? Join our team as a Tier 3 Engineer and take ownership of advanced infrastructure, cloud migrations, and mentoring opportunities.

FT, Direct Hire | Onsite | $84-94K

Key Technologies: Infrastructure, Systems, Networking, Windows, Office 365, Active Directory, VMWare, firewalls, switches, routers, security, VLAN

We are looking for a senior-level engineer to join our team and take on a mix of advanced support, project leadership, and mentorship responsibilities. This role is ideal for someone who thrives on solving complex technical problems, enjoys working across both cloud and on-premises environments, and wants to play a key role in shaping IT infrastructure and security strategies.

What You’ll Do

• Be the final escalation point for technical issues and provide expert-level troubleshooting.
• Lead cloud migration projects (on-prem to cloud, tenant-to-tenant, cross-platform).
• Manage and secure Microsoft 365 and on-premises server environments.
• Oversee network infrastructure including firewalls, switches, and wireless access points.
• Design and deploy security solutions such as MFA.
• Document processes, deliver training, and mentor junior team members.
• Respond to high-priority incidents and support after-hours on a rotating basis.

What We’re Looking For

• 5+ years of experience in a senior technical role.
• Strong expertise with Microsoft 365, Windows Server, Hyper‑V/VMware, and network infrastructure.
• Familiarity with security tools (MDR, EDR, antivirus) and VoIP systems.
• Excellent communication, documentation, and mentoring skills.

This is a great opportunity for someone who wants to take ownership of challenging projects, work closely with clients and internal teams, and help drive IT excellence.

Seniority level: Mid‑Senior

Employment type: Full‑time