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Sr. Systems Engineer

Square Hiring

 

Boston, MA, USA

Posted On: 30+ days ago
Experience: 8+ years
Availability: Onsite
Openings: 1
Category: Sr. Systems Engineer
Tenure: Contract - Corp-to-Corp
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Description

Own the security remediation, systems support, and governance of lab infrastructure and endpoints across global sites.

This role is on-site.

Responsibilities

  • Execute the Non-Attributable Account (NAA) remediation program, including building host allow/deny lists in Active Directory and coordinating password resets.
  • Deploy and configure endpoint security tools (CrowdStrike) and privileged access management solutions (BeyondTrust) to replace legacy workflows.
  • Define and enforce software allowlists, manage USB restriction policies, and remediate unauthorized or unlicensed software on lab workstations.
  • Manage OS patching cadences, close vulnerability gaps, and identify end-of-life operating systems for isolation or replacement.
  • Maintain system documentation, manage ServiceNow requests, and provide hands-on support for connectivity and authentication issues across Boston and global lab sites.

Required Skills

  • 8+ years of experience in IT/OT systems engineering, endpoint security, or lab systems support.
  • Advanced proficiency in Active Directory administration, including Organizational Unit (OU) management, Group Policy, and service account provisioning.
  • Hands-on experience with Windows Server environments and systems support.
  • Proficiency in PowerShell for automation and configuration management.
  • Practical experience with ITSM/ITIL frameworks and ServiceNow request management.
  • Proven track record of executing security remediation activities such as patching, endpoint agent deployment, and access control changes.
  • Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or related field (or equivalent experience).

Preferred Skills

  • Experience supporting laboratory, manufacturing, or operational technology environments.
  • Familiarity with CrowdStrike EDR and BeyondTrust or equivalent privileged access management tools.

Education

Bachelor's degree

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