Senior Systems Engineer (VMware & Microsoft Infrastructure)

Sentinel Technologies Inc.; Cicero (IL); On-site; USD 66,000 - 79,000; Full time

Job summary

Sentinel Technologies Inc. seeks a Senior Systems Engineer to act as the onsite technical SME for VMware, Active Directory, Microsoft 365, Entra ID, and Intune. The role focuses on administering and modernizing VMware infrastructure while shaping architecture, governance, and standards.

The ideal candidate brings deep virtualization expertise, strong collaboration skills, and the ability to mentor others. This is a contract-to-hire position located onsite in Cicero, Illinois, with competitive

Qualifications

• Significant hands‑on experience administering and supporting enterprise VMware environments.
• Experience designing, managing, and troubleshooting highly available virtualized environments.
• Experience supporting hybrid Microsoft infrastructure environments hosted on VMware platforms.
• Strong understanding of storage, compute, networking, and virtualization concepts.
• Experience with VMware capacity planning, performance tuning, disaster recovery, and infrastructure modernization initiatives.
• Strong understanding of identity and access management principles.
• Experience with PowerShell scripting and automation.
• Proven ability to troubleshoot complex infrastructure issues across VMware and Microsoft technology stacks.
• Experience documenting environments, implementing standards, and driving infrastructure improvements.
• Strong communication and collaboration skills with the ability to work effectively across teams.

Responsibilities

• Serve as onsite technical SME for VMware, AD, M365, Entra ID, and Intune environments.
• Administer, optimize, and modernize the organization's VMware infrastructure; establish architecture, governance, and best practices.
• Collaborate with teams; mentor colleagues and drive infrastructure improvements.

Skills

VMware vSphere

ESXi

vCenter

VMware lifecycle management

Active Directory

Microsoft 365

Entra ID

Intune

PowerShell scripting

Infrastructure architecture

Troubleshooting complex infra

Collaboration & mentoring

Education

Bachelor's degree in IT, CS, or related field

Job description

Responsibilities

We are seeking a Senior Systems Engineer with deep expertise in VMware infrastructure technologies to serve as the organization's onsite technical subject matter expert for VMware, Active Directory, Microsoft 365, Entra ID, and Intune environments.

This individual will play a critical role in the administration, optimization, and modernization of the organization's VMware infrastructure while helping establish long-term architecture, standards, governance, and best practices. The ideal candidate is not only a strong systems administrator, but also someone who understands infrastructure architecture, can drive strategic improvements, and enjoys collaborating closely with team members through knowledge sharing and mentorship.

This is a contract to hire position located onsite in Cicero, Illinois

Qualifications

• Significant hands‑on experience administering and supporting enterprise VMware environments.
• Strong expertise with:
  • VMware vSphere
  • ESXi
  • vCenter
  • VMware lifecycle management, upgrades, and performance optimization
  • Active Directory
  • Microsoft 365
  • Entra ID
  • Intune
• Experience designing, managing, and troubleshooting highly available virtualized environments.
• Experience supporting hybrid Microsoft infrastructure environments hosted on VMware platforms.
• Strong understanding of storage, compute, networking, and virtualization concepts.
• Experience with VMware capacity planning, performance tuning, disaster recovery, and infrastructure modernization initiatives.
• Strong understanding of identity and access management principles.
• Experience with PowerShell scripting and automation.
• Proven ability to troubleshoot complex infrastructure issues across VMware and Microsoft technology stacks.
• Experience documenting environments, implementing standards, and driving infrastructure improvements.
• Strong communication and collaboration skills with the ability to work effectively across teams.
• Legally authorized to work in the U.S. without sponsorship.
• Must demonstrate a "can-do" attitude.

Preferred Qualifications

• Bachelor's degree in Information Technology, Computer Science, or a related field preferred.
• Equivalent combination of professional experience and technical expertise will also be considered.
• VMware certifications (VCP, VCAP) highly preferred.
• Relevant Microsoft infrastructure certifications are a plus.
• Experience participating in virtualization migrations, datacenter transformations, or infrastructure modernization projects.

Compensation Range:

$48-$57 per hour

What you get:

We offer weekly competitive pay, medical, dental, vision, 401K and more.

Overview

About Us:

Sentinel delivers solutions that can efficiently address a range of IT needs – from security, to communications, to systems & networks, to software applications, to cloud and managed services; all of which include our staffing solutions for our clients. Since 1982, Sentinel has grown from providing technology maintenance services to our current standing as one of the leading IT services and solutions provider in the US. We have aligned with many of today’s global technology leaders including Cisco, Dell, VMware and Microsoft. Sentinel services customers both nationally and internationally with primary support operating centers in Downers Grove (HQ), Chicago, and Springfield, IL; Phoenix, AZ.; Lansing, and Grand Rapids, MI; Milwaukee, WI; and Denver, CO.

As part of Sentinel's employment process, candidates will be required to complete a background check. Only those who meet the minimum requirements will be contacted. No phone calls please.

Sentinel is proud to be an equal opportunity employer including disability and veterans. In accordance with Title VII and state regulations, all qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, marital status, pregnancy, genetics, disability, military, veteran status or any other basis protected by law.

If you are an individual with a disability and need assistance in applying for a position, please contact [e-mail].

The “Know Your Rights” Poster is available here

https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf

Sentinel EEO Policy Statement is available here.

https://www.sentinel.com/about/diversity

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