Senior System Infrastructure Engineer

Connexion Systems + Engineering; Shrewsbury (MA); On-site; USD 150,000 - 170,000; Full time

Job summary

Connexion Systems & Engineering Inc. seeks a Senior System Infrastructure Engineer in Shrewsbury, MA to design, secure, and support enterprise infrastructure, including servers, storage, networking, and cybersecurity.

This role involves hands-on deployment and ongoing optimization across Windows Server, VMware, and Cisco environments. You will lead project planning, risk assessments, and contingency planning while mentoring teammates.

Qualifications

• Advanced knowledge of Windows operating systems and server infrastructure.
• Experience managing 50+ Windows Server environments in a corporate setting.
• Proficiency with VMware vSphere/ESXi/vCenter and NetApp storage systems.
• Strong experience with Cisco ASA firewalls and VPN technologies.
• Demonstrated ability to design and implement enterprise infrastructure security.

Responsibilities

• Design, install and configure internal and customer-facing servers, network devices, and firewalls.
• Proactively manage and maintain server, network, and firewall systems.
• Administer and support Microsoft Exchange on premises and online.
• Administer and support core Microsoft, Cisco, and VMware technologies.
• Develop and implement project plans, risk assessments, and contingency plans.
• Define and document best practices and support procedures.
• Provide after-hours support for infrastructure emergencies and occasional weekend maintenance.
• Mentor team members on new technologies.

Skills

Windows Server

VMware vSphere

NetApp Storage

Cisco ASA

VPN Technologies

Cybersecurity

Active Directory

Education

Bachelor's degree in computer science (or related area)

15+ years of corporate networking experience

VMware VCP, Cisco CCNA/CCNP, CISSP or equivalent

Tools

Microsoft Entra

Exchange / M365 / Defender

Intune

NetApp storage systems

Cisco ASA

Nutanix AHV / Prism (preferred)

Job description

Job Title: Senior System Infrastructure Engineer Salary: $150-$170K Location: Shrewsbury, MA Duration: PERM

JOB SUMMARY

The Senior System Infrastructure Engineer will design, maintain, secure, and support our enterprise technology infrastructure. This is a hands-on senior technical role responsible for server virtualization, enterprise storage, Windows Server systems, networking, firewalls, VPN connectivity, wireless infrastructure, cybersecurity, and related technology platforms.

DUTIES/RESPONSIBILITIES

The requirements listed below are representative of the essential duties required:

• Design, install and configure internal and customer-facing servers, network devices, and firewalls.
• Proactively manage and maintain the server, network, and firewall systems.
• Administer and support Microsoft Exchange on premises and online.
• Administer and support core Microsoft, Cisco, and VMware technologies.
• Develop and implement project plans, risk assessments, and contingency plans.
• Design and implement monitoring, configuration management, and reporting functions that will make a hands-off environment.
• Define and document best practices and support procedures.
• Provide after-hours support for Infrastructure related emergencies as well as occasional weekend maintenance.
• Assist with hardware, firewall, telecom, and software vendor evaluation, recommendation, and negotiations.
• Mentor/cross-train team members on existing and new technologies.
• Carry out special tasks at Management's direction.
• Interact with vendors and staff at the technical level, as required.
• Other duties as assigned.

LEVEL OF RESPONSIBILITY

Employee may work independently, but work is often reviewed by immediate supervisor. Employee exercises broad discretion on matters of significance within functional areas. Employee advises others within the organization on matters within area of expertise.

SUPERVISORY RESPONSIBILITIES

None.

REQUIRED SKILLS/ABILITIES

• Advanced knowledge of Windows Operating Systems current and legacy versions.
• Managing at least 50 Windows Server infrastructure.
• Experience with Microsoft Entra, Exchange, M365, Intune, and Defender.
• Strong hands-on experience with VMware vSphere, ESXi, and vCenter.
• Strong experience administering NetApp storage systems.
• Advanced knowledge of Microsoft Windows Server 2019 or newer.
• Strong knowledge of Active Directory, Group Policy, DNS, and DHCP.
• Experience administering and troubleshooting Cisco ASA firewalls.
• Strong knowledge of site-to-site and remote-access VPN technologies.
• Strong understanding of TCP/IP, VLANs, subnetting, routing, switching, and network segmentation.
• Hands-on experience supporting Cisco Meraki switches and wireless access points.
• Strong understanding of cybersecurity principles, including infrastructure hardening, vulnerability management, patching, secure access, and network security.
• Experience with backup, disaster recovery, and business continuity technologies.
• Experience troubleshooting complex server, network, storage, firewall, VPN, and infrastructure problems.
• Strong technical documentation and organizational skills.
• Demonstrated ability to independently manage complex technical projects and issues.
• Strong written and verbal communication skills.
• Ability to communicate effectively with technical teams, business users, vendors, and management.

PREFFERED SKILLS/ABILITIES

• Ability to support a legacy VAX Environment.
• SQL, VB.net, HTML Coding Skills.
• Experience with Nutanix AHV, Prism Central, Prism Element, or Nutanix hyperconverged infrastructure is highly desirable.

EDUCATION AND EXPERIENCE

• Bachelor's degree in computer science (or related area) preferred.
• 15 or more years of experience with advanced networking in a corporate environment.
• One or more of the following certifications: VMware Certified Professional (VCP) Cisco CCNA or CCNP Microsoft certifications NetApp Certified Data Administrator Nutanix Certified Professional CISSP or similar cybersecurity certification