Senior System Engineer

Franklin Fitch; Town of Smithtown (NY); On-site; USD 130,000 - 180,000; Full time

Benefits offered by this job

Medical, dental, vision coverage

401(k) plan

Birthday day off

Job summary

Franklin Fitch in Smithtown, NY seeks a Senior Systems Engineer to own and operate a complex on-site infrastructure for a long-term client engagement. You will act as the primary technical resource on-site, guiding day-to-day operations and technical strategy.

The role requires 5+ years in systems engineering, strong VMware vSphere, Windows Server/AD, and Microsoft 365/Exchange experience, plus solid networking and backup/DR capabilities. Excellent communication and independence are essential.

Qualifications

• 5+ years of hands-on systems engineering or infrastructure support.
• Strong VMware vSphere administration is required.
• Experience with Windows Server, Active Directory, and Exchange.
• Proficient in Microsoft 365 and security/networking basics.
• Excellent problem-solving and independent work ethic.
• Good communication skills.

Responsibilities

• Serve as primary on-site technical resource for a large, enterprise environment.
• Administer VMware, Windows Server, and Microsoft 365 services.
• Lead infrastructure projects, migrations, and upgrades.
• Manage backups, DR, and business continuity.
• Provide on-site mentoring and maintain documentation.

Skills

5+ years experience

VMware vSphere

Windows Server

Active Directory

Microsoft 365/Exchange

Networking

Backup & DR

Troubleshooting

Communication

Tools

VMware vSphere

Microsoft 365

Exchange

Job description

Senior Systems Engineer | Smithtown, NY | On-Site | $130,000 - $180,000

About the Opportunity

A leading technology services organization is seeking a Senior Systems Engineer to support a long-term, enterprise-level client environment in Suffolk County, NY. This is a permanent, full-time position offering the opportunity to take ownership of a complex infrastructure environment while serving as the primary technical resource on-site.

This role is ideal for an experienced infrastructure professional who enjoys working autonomously, solving complex technical challenges, and mentoring junior technical staff when needed.

What You'll Be Doing

• Act as the primary on-site technical resource supporting a large, enterprise-scale environment
• Administer and maintain VMware virtual infrastructure, Windows Server environments, and Microsoft 365 services
• Lead server, storage, networking, and infrastructure projects
• Manage backups, disaster recovery, and business continuity processes
• Support firewalls, VPNs, switches, wireless infrastructure, and security technologies
• Perform server migrations, upgrades, and infrastructure improvements
• Serve as an escalation point for technical issues and mentor junior engineers
• Maintain accurate documentation and provide proactive recommendations for environment improvements

Required Experience

• 5+ years of hands-on systems engineering or infrastructure support experience
• Strong VMware vSphere administration experience (critical requirement)
• Windows Server administration and Active Directory expertise
• Experience supporting Microsoft 365 and Exchange environments
• Strong networking knowledge including VPNs, routing, switching, and firewall technologies
• Experience with backup and disaster recovery solutions
• Strong troubleshooting skills across servers, networks, and applications
• Excellent communication skills with the ability to work independently

Preferred Experience

• Industry certifications such as VMware, Microsoft, Cisco, or CompTIA
• Experience leading infrastructure projects and mentoring junior team members

What's on Offer

• Medical, dental, and vision coverage
• 401(k) plan
• Paid holidays plus an additional birthday day off
• Long‑term career growth opportunities
• Stable, permanent employment with a growing technology organization

If you're an experienced infrastructure professional looking for a role where you can take ownership of a critical technical environment and have a direct impact on business operations, we'd like to hear from you.