IT Systems Engineer III

Job Description

Job Description

We are looking for an experienced IT Systems Engineer III to support and enhance enterprise infrastructure across both on-premises and cloud environments in Stamford, Connecticut. This role focuses on maintaining reliable compute, network, identity, and security platforms while driving performance, stability, and operational improvements. The ideal candidate brings strong hands-on systems engineering expertise, a proactive troubleshooting mindset, and the ability to collaborate across IT functions to keep critical business services running effectively.

Responsibilities:
• Oversee the deployment, maintenance, and patch management of core infrastructure platforms across the data center and cloud, including VMware, Nutanix, and Microsoft Azure.
• Administer Active Directory and related identity services, including organizational structure, policy management, domain services, and access controls.
• Manage network infrastructure and connectivity by supporting routers, switches, wireless environments, and internet-facing services while resolving performance and availability issues.
• Maintain and secure infrastructure technologies such as firewalls and other protection tools to support a stable and compliant operating environment.
• Monitor critical systems and respond quickly to incidents to minimize downtime and maintain consistent service availability across business operations.
• Provision, support, and optimize virtual machines in both on-premises and cloud-based environments, with an emphasis on reliability and scalability.
• Safeguard enterprise data by maintaining backup operations, validating recovery readiness, and assisting with disaster recovery support for essential systems.
• Create and update technical documentation, share knowledge with team members, and contribute to infrastructure automation, alerting, and continuous improvement initiatives.• 3+ years of experience in systems engineering within a medium to large-scale IT environment.
• Hands-on expertise supporting virtualization platforms such as Nutanix and VMware in production settings.
• Strong knowledge of Microsoft infrastructure technologies, including Active Directory, Azure, Azure Active Directory, Entra ID, Group Policy, and SCCM.
• Experience managing networking components and troubleshooting connectivity across routers, switches, wireless networks, and internet services.
• Familiarity with system patching, infrastructure monitoring tools, backup technologies, storage platforms, and server hardware.
• Ability to diagnose technical issues, prioritize work effectively, and deliver solutions within established timelines.
• Bachelor’s degree in a technology-related field or equivalent practical experience.
• Capable of working independently, collaborating with cross-functional teams, and identifying opportunities for automation and process improvement.