Senior System Engineer

2 weeks ago

Kennett Square, Pennsylvania, United States London Approach Full time $120,000 - $140,000 per year

Overview

We are seeking a Senior Systems Engineer to take ownership of our IT infrastructure portfolio, ensuring the secure, reliable, and efficient operation of our on-premises, virtual, and cloud environments. This hands-on role will manage critical systems across Windows, Linux, Active Directory, and Microsoft 365, while also contributing to long-term planning, policy development, and infrastructure lifecycle management.

As a senior member of the team, this individual will provide technical expertise, guide best practices, and ensure compliance with security and regulatory standards. The position requires strong problem-solving abilities, deep technical knowledge, and the ability to balance tactical execution with strategic planning.

Key Responsibilities

Infrastructure Operations

  • Administer and support servers, appliances, hypervisors, storage, and related infrastructure.
  • Manage Windows and Linux operating systems, Active Directory, DNS, DHCP, Group Policy, and authentication services.
  • Oversee enterprise Microsoft 365 services, including Intune, Autopilot, Exchange Online, SharePoint, and Teams.
  • Maintain virtualization platforms (VMware, Hyper-V, Citrix, Nutanix, KVM) and cloud infrastructure (Azure, AWS).
  • Implement and manage backup, recovery, and monitoring solutions to ensure high availability and resiliency.
  • Deploy, monitor, and patch infrastructure systems to maintain security, performance, and compliance.
  • Provide on-call 24/7 support for production systems as needed.

Planning & Strategy

  • Contribute to the development and execution of the IT infrastructure roadmap.
  • Propose and deliver projects aligned with organizational goals, ensuring timely and cost-effective completion.
  • Participate in annual budget planning, capital expenditure requests, and vendor negotiations.
  • Draft technical documentation, standards, and best practices to support consistency and scalability.

Compliance & Security

  • Ensure adherence to company policies, licensing, regulatory obligations, and industry best practices.
  • Collaborate with Audit and Cybersecurity teams to remediate vulnerabilities and strengthen controls.
  • Maintain and periodically test disaster recovery and business continuity procedures.
  • Monitor risk exposure, address compliance issues, and document corrective actions.

Qualifications

Education & Experience

  • Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent experience).
  • 5+ years of progressive system administration experience.
  • 3+ years administering enterprise virtualization platforms (VMware vSphere/ESXi, Hyper-V, Citrix, Nutanix, or KVM).
  • Proven expertise with Windows Server, Active Directory, DNS, DHCP, and GPO management.
  • Hands-on experience with Microsoft 365 (Intune, Autopilot, Exchange Online, SharePoint Online).
  • Familiarity with cloud platforms such as Azure and/or AWS.
  • Strong troubleshooting, monitoring, and automation capabilities (e.g., PowerShell, scripting).
  • Experience working in compliance-driven environments with complex infrastructure.

Technical Specialties

  • Active Directory / Microsoft Windows Server OS
  • Oracle Linux / Oracle Linux Virtualization Manager
  • VMware and other virtualization platforms
  • Shared storage solutions
  • Backup & recovery tools
  • Microsoft 365, Exchange, SharePoint, Intune, Autopilot

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