Senior IT Systems Engineer

Andover, MA, 01810

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Type: Contract

Reference ID: 33130831

Date Posted: 09/25/2026



Job Title: Senior Principal, Information Systems Engineer
Location-Type: Hybrid (3x week) – Andover, MA
Start Date Is: ASAP
Duration: 6 months contract
Compensation Range: $75-$80/hour W2
Benefits: Eligible for Health, Dental, Vision, 401K
Must be authorized to work in the U.S. This position is not eligible for sponsorship.

Job Description:
Senior-level infrastructure and network engineering role responsible for hands-on ownership, troubleshooting, maintenance, and modernization of critical Microsoft, networking, server, virtualization, storage, identity, and enterprise communication systems supporting approximately 2,000 users.

Job Summary: 

  • Manage and troubleshoot network infrastructure, including switches, routers, firewalls, connectivity, and F5 technologies.
  • Administer Microsoft environments, including Active Directory, Entra/Azure Identity, ADFS, Group Policy, and related identity systems.
  • Install, configure, rack, and maintain physical servers and infrastructure hardware.
  • Manage on-premises and cloud virtualization environments.
  • Manage SAN, NAS, and cloud storage environments.
  • Manage DNS, PKI, and certificate infrastructure.
  • Support Microsoft Teams, enterprise voice, conference rooms, and teleconferencing systems.
  • Troubleshoot complex hardware, software, server, and network issues.
  • Lead infrastructure upgrades, modernization initiatives, and new technology deployments.
  • Participate in daily team collaboration and ticket-based support activities.
  • Maintain infrastructure documentation and support secure, reliable IT operations.

Required Qualifications: 

  • 5-7 years of related infrastructure/network engineering experience preferred for the Senior level.
  • Expert Microsoft infrastructure and administration experience.
  • Strong Active Directory, Entra/Azure Identity, ADFS, and Group Policy experience.
  • Strong networking infrastructure experience, including firewalls, F5, routers, switches, TCP/IP, and enterprise connectivity.
  • Experience with virtualization across on-premises and cloud environments.
  • Experience with DNS, PKI, and certificate management.
  • Experience managing physical servers and backend server infrastructure.
  • Experience with SAN, NAS, and cloud storage technologies.
  • Experience supporting enterprise voice, Microsoft Teams, conference rooms, and teleconferencing.
  • Ability to independently troubleshoot complex infrastructure issues and lead technical projects.
  • Ability to work hands-on in a hybrid environment and support approximately 2,000 users.
  • Ability to obtain a government security clearance.
Preferred Qualifications:
  • Cisco certifications such as CCNA, CCNP, or CCIE.
  • Check Point firewall experience.
  • Juniper remote-access experience.
  • NAC or ForeScout CounterAct experience.
  • MPLS, VoIP, data-center networking, and network mapping experience.
  • Aerospace or defense industry experience.
  • Experience incorporating AI technologies into secure infrastructure environments.
  • Experience mentoring engineers or leading cross-site infrastructure initiatives.

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