IT Infrastructure Engineer (On-Site)

SSR Total IT; Milwaukee (WI); On-site; USD 90,000 - 130,000; Full time

Job summary

SSR Total IT is seeking an experienced IT Engineer to act as a trusted technical advisor and technical leader within our Infrastructure & Security Engineering team. You will own client environments, lead infrastructure projects, and ensure the long-term health of networks, servers, cloud platforms, and security systems for a diverse set of Wisconsin-based clients.

You will collaborate with a group of 10+ engineers, focusing on complex troubleshooting, strategic infrastructure initiatives, and

Qualifications

• 8+ years supporting IT infrastructure environments.
• Strong Windows Server / Active Directory experience.
• Networking fundamentals (VLANs, VPNs, firewalls, switching).
• Microsoft 365 / Azure experience.
• VMware or Hyper‑V experience.
• Strong troubleshooting and client communication skills.
• Hardware platforms including HP, Dell, Meraki, and Cisco.
• Preferred MSP or consulting experience.
• Veeam / Datto / backup platforms.
• Security tools (Sentinel One, KnowBe4, Duo, Qualys, Greenbone, etc.).
• Certifications (Microsoft, Azure, VMware, Cisco, Security+, etc.).

Responsibilities

• Act as the technical leader for assigned client environments.
• Design, implement, and maintain servers, security, networking, firewalls, backups, and cloud platforms.
• Support and architect Microsoft 365 and Azure environments.
• Lead migrations, upgrades, virtualization, and infrastructure projects.
• Assist Help Desk and NOC teams with escalations.
• Perform proactive system reviews and recommend improvements.
• Keep building your skills and certifications to stay ahead of what the market needs.

Skills

Windows Server experience

Active Directory experience

Networking fundamentals

Microsoft 365 / Azure experience

VMware / Hyper-V experience

Troubleshooting

Client communication

Hardware knowledge (HP, Dell, Meraki,,

Tools

VMware

Hyper-V

Azure

Meraki

Cisco

VPNs

Firewalls

Job description

SSR Total IT is a 30-year-established MSP where engineers are the business, not a support function.

You’ll own client environments, lead infrastructure projects, and act as a trusted advisor to 170+ small and mid-sized businesses, 3,000+ end users, and 2,000+ systems across Wisconsin. If you want a seat at the table where solutions are actually designed, not just deployed, this is that seat.

We work across five divisions, Procurement, Operational Excellence, Managed Services, Applications & Analytics, and Infrastructure & Security Engineering, so you’ll touch a wide range of technology while helping clients modernize and secure their environments.

Our culture runs on five values: Client Driven, Elevate Others, Do the Right Thing, Thirst for Knowledge, and Professionalism.

Why SSR

SSR Total IT is a 30-year-established MSP where engineers are the business, not a support function.

You’ll own client environments, lead infrastructure projects, and act as a trusted advisor to 170+ small and mid-sized businesses, 3,000+ end users, and 2,000+ systems across Wisconsin. If you want a seat at the table where solutions are actually designed, not just deployed, this is that seat.

We work across five divisions, Procurement, Operational Excellence, Managed Services, Applications & Analytics, and Infrastructure & Security Engineering, so you’ll touch a wide range of technology while helping clients modernize and secure their environments.

Our culture runs on five values: Client Driven, Elevate Others, Do the Right Thing, Thirst for Knowledge, and Professionalism.

The Role

We’re looking for an experienced IT Engineer to be a trusted technical advisor to clients and a key contributor on our Infrastructure & Security Engineering team. You’ll join a collaborative group of 10+ engineers who share knowledge and push each other to get better. You’ll own the stability, security, and long-term health of client environments, networks, servers, cloud platforms, and security systems, and you’ll work directly with clients to connect technology decisions to business outcomes.

What You’ll Do

• Act as the technical leader for assigned client environments
• Design, implement, and maintain servers, security, networking, firewalls, backups, and cloud platforms
• Support and architect Microsoft 365 and Azure environments
• Lead migrations, upgrades, virtualization, and infrastructure projects
• Assist Help Desk and NOC teams with escalations
• Perform proactive system reviews and recommend improvements
• Keep building your skills and certifications to stay ahead of what the market needs

Qualifications

Required — represents the typical client environment at SSR:

• 8+ years supporting IT infrastructure environments
• Strong Windows Server / Active Directory experience
• Networking fundamentals (VLANs, VPNs, firewalls, switching)
• Microsoft 365 / Azure experience
• VMware or Hyper‑V experience
• Strong troubleshooting and client communication skills
• Hardware platforms including HP, Dell, Meraki, and Cisco

Preferred:

• MSP or consulting experience
• Veeam / Datto / backup platforms
• Security tools (Sentinel One, KnowBe4, Duo, Qualys, Greenbone, etc.)
• Certifications (Microsoft, Azure, VMware, Cisco, Security+, etc.)

How This Role Fits Within Our Team

Help Desk NOC Engineers Senior Engineers Engineering Leadership

Our engineers focus on complex troubleshooting, infrastructure projects, and client-facing technical leadership, while frontline teams handle monitoring and first-response support.

Benefits

• 401(k) + Profit Share
• Afterhours Bonuses
• Quarterly Bonus Program (SSR Share)
• Health, Dental, Vision, Life & Disability Insurance
• Paid Time Off & Holidays
• Training & Professional Development