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Security Systems Engineer

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Kelser

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Location:
United States , Glastonbury

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided
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Job Description:

The Security Systems Engineer (SSE) serves as the key resource for designing, implementing, and providing advanced support for client infrastructure within a managed services setting, as well as implementation of security compliance protocols and assessments. The SSE handles high-level support and implementation for cyber security, server infrastructure, network environments, cloud and hybrid cloud architectures, virtualization, and related technologies. This role requires extensive expertise in Security, Networking and Windows infrastructure, ensuring the effective delivery of these services to clients. Strong communication and customer service skills are essential for this client-facing position.

Job Responsibility:

  • Support Kelser customers with project delivery, server monitoring and administration and pre- sales engineering support
  • Service delivery via excellent communication and customer service
  • Network, Server and cloud infrastructure architecture and design
  • Attend and comprehend training
  • Ability to achieve higher level certifications
  • Stay current with emerging technologies and products
  • Availability for off-hours or on-call assignments
  • Other duties as determined by Kelser management.

Requirements:

  • Previous experience in an MSP or consulting role preferred
  • Advanced in-depth, hands-on experience with: Security compliance experience (NIST, CMMC)
  • Network security best practices
  • Performing security risk assessments
  • Vulnerability Assessments and penetration tests
  • Implementing security controls for infrastructure and critical systems
  • Working knowledge of VLANs, VTP, and STP
  • Windows Server and Exchange Server support, implementation, administration, and migrations
  • AD administration and forest upgrades
  • Configuration and management of large and complex environments using Group Policy
  • Office 365 migrations, including tenant split/merge migrations
  • Microsoft Entra hybrid identity management
  • AWS, Azure, Hosted IaaS, PaaS offerings
  • Complex ESX support, implementation and administration
  • Remote Desktop Services
  • RDS profile management (FSLogix)
  • Autopilot device deployment, Intune MDM
  • Knowledge of network security concepts and tools
  • Ability to triage and handle multiple, simultaneous workstreams
  • Demonstrated troubleshooting, problem solving, and analytical skills
  • Project documentation (diagramming, written, etc.)
  • Security certification – CISSP, CMMC RP, Cisco Security, GSEC, CompTIA Security+
  • Bachelor's Degree or equivalent in Computer Science, Engineering, or equivalent combination of education and experience.
What we offer:
  • Medical/Dental/Eye Care Insurance
  • Flexible Paid Time Off
  • Certification Support
  • Hybrid Schedule (3 days in office, 2 days remote)
  • 401(k)
  • Profit-Sharing
  • Short Term/Long Term Disability Insurance
  • Free Parking
  • Life Insurance
  • Paid Holidays
  • Employee Purchase Program
  • Free Coffee
  • Collaborative Workspace.

Additional Information:

Job Posted:
December 09, 2025

Employment Type:
Fulltime
Work Type:
Hybrid work
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