Senior IT Systems and Infrastructure Specialist

Confidential; New York (NY); On-site; USD 90,000 - 110,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) retirement plan

Paid time off (PTO)

Job summary

Confidential is seeking a Senior IT Systems & Infrastructure Specialist to join our team in a full-time, on-site capacity at our Northern New Jersey office. You will lead administration, security, and lifecycle management of enterprise IT infrastructure, aligning solutions with business goals.

The role requires strong Windows, AD, and network experience, plus expertise in cybersecurity controls, disaster recovery, and incident response.

Qualifications

• Demonstrated experience administering enterprise IT environments, including Windows workstations and servers, Microsoft 365, Active Directory, email/Exchange.
• Strong knowledge of networking principles and protocols, including TCP/IP, DNS, DHCP, SMTP, SFTP, LDAP, ARP, VLANs, routing, and switching.
• Hands-on experience managing network infrastructure, firewalls, wireless systems, endpoint security, encryption, access controls, vulnerability management, security monitoring, and incident response.
• Strong understanding of cybersecurity threats, vulnerabilities, security controls, risk mitigation, and industry best practices.
• Experience with backup, disaster recovery, business continuity, system recovery, and infrastructure lifecycle management.
• Advanced troubleshooting, analytical, problem-solving, and root-cause analysis skills, with the ability to resolve complex technical issues in both routine and high-pressure situations.
• Ability to evaluate emerging technologies and implement practical, secure, scalable solutions aligned with organizational and business needs.
• Excellent communication, documentation, organizational, and project-management skills, with the ability to effectively communicate technical concepts to both technical and non-technical audiences.
• Highly computer literate, detail-oriented, proactive, adaptable, and capable of prioritizing competing demands while maintaining service reliability and security.

Responsibilities

• Lead the day-to-day administration, operation, performance, security, and lifecycle management of local and remote IT infrastructure.
• Administer and support Windows Server, Microsoft 365, Active Directory, email, file/print services, databases, document management systems, backups, and related enterprise applications.
• Design, implement, maintain, and optimize secure, reliable, scalable IT infrastructure aligned with organizational objectives and business requirements.
• Provide advanced technical support and serve as a senior escalation point for complex hardware, software, systems, and network issues.
• Plan and implement system upgrades, patches, infrastructure projects, technology enhancements, and new solutions.

Skills

Windows workstations

Windows Server

Microsoft 365

Active Directory

Networking

Cybersecurity

Troubleshooting

Communication

Documentation

Education

Bachelor’s degree in IT/CS or related field

Tools

Exchange/Email

Firewalls & VPNs

Backups & DR

Job description

We are actively recruiting for a full-time Senior IT Systems & Infrastructure Specialist to join our team. This position will be full time on site in our Northern New Jersey office.

Responsibilities

• Lead the day-to-day administration, operation, performance, security, and lifecycle management of local and remote IT infrastructure, including servers, workstations, networks, firewalls, switches, wireless systems, telecommunications, and connected devices.
• Administer and support Windows Server, Microsoft 365, Active Directory, email, file/print services, databases, document management systems, backups, and related enterprise applications.
• Design, implement, maintain, and optimize secure, reliable, scalable IT infrastructure aligned with organizational objectives and business requirements.
• Provide advanced technical support and serve as a senior escalation point for complex hardware, software, systems, and network issues, including troubleshooting, repair, maintenance, and root-cause analysis.
• Manage user accounts, permissions, security groups, access rights, and system memberships in accordance with security, access-control, and least-privilege requirements.
• Implement and maintain cybersecurity controls, including firewalls, endpoint protection, encryption, vulnerability management, monitoring, access controls, security testing, and incident response.
• Monitor enterprise systems and networks for threats, vulnerabilities, and unauthorized activity; investigate and respond to cybersecurity incidents and other critical technology events.
• Manage network infrastructure, including switching, routing, VLANs, wireless technologies, firewalls, and core network services.
• Plan and implement system upgrades, patches, infrastructure projects, technology enhancements, and new solutions in accordance with change-management and security procedures.
• Maintain and test backup, disaster recovery, business continuity, and incident response processes; participate in the resolution of outages, emergencies, and other operational disruptions.
• Research emerging technologies, cybersecurity threats, and industry best practices and recommend modernization, risk mitigation, and process improvements.
• Maintain accurate IT asset inventories, system documentation, network diagrams, configurations, licenses, warranties, and lifecycle records.
• Establish and maintain IT standards, procedures, and best practices that promote secure, reliable, efficient, and compliant operations.
• Ensure IT operations comply with organizational policies, licensing requirements, security standards, industry best practices, and applicable regulations.
• Support employee onboarding, technology training, and security awareness initiatives; mentor junior IT staff and provide technical guidance as a senior technical resource.
• Provide regular and on-call technical support and perform other IT responsibilities necessary to support organizational objectives and business continuity.

Required Skills and Experience

• Demonstrated experience administering enterprise IT environments, including Windows workstations and servers, Microsoft 365, Active Directory, email/Exchange, enterprise applications, file/print services, remote access, and end-user systems.
• Strong knowledge of networking principles and protocols, including TCP/IP, DNS, DHCP, SMTP, SFTP, LDAP, ARP, VLANs, routing, and switching.
• Hands-on experience managing network infrastructure, firewalls, wireless systems, endpoint security, encryption, access controls, vulnerability management, security monitoring, and incident response.
• Strong understanding of cybersecurity threats, vulnerabilities, security controls, risk mitigation, and industry best practices.
• Experience with backup, disaster recovery, business continuity, system recovery, and infrastructure lifecycle management.
• Advanced troubleshooting, analytical, problem-solving, and root-cause analysis skills, with the ability to resolve complex technical issues in both routine and high-pressure situations.
• Ability to evaluate emerging technologies and implement practical, secure, scalable solutions aligned with organizational and business needs.
• Excellent communication, documentation, organizational, and project-management skills, with the ability to effectively communicate technical concepts to both technical and non-technical audiences.
• Highly computer literate, detail-oriented, proactive, adaptable, and capable of prioritizing competing demands while maintaining service reliability and security.

Preferred Skills and Experience

• Relevant IT certifications such as CompTIA Security+, CompTIA Network+, Microsoft, Cisco, or equivalent credentials.
• Bachelor’s degree in Information Technology, Computer Science, Cybersecurity, or a related field, or an equivalent combination of education and professional experience.

Salary and Benefits

• The salary range for this position is $90,000–$110,000 annually, depending on education, qualifications, and relevant experience.
• The position offers a competitive benefits package, including medical, dental, and vision insurance, a 401(k) retirement plan, and paid time off (PTO).

The organization is an Equal Employment Opportunity Employer and makes employment decisions without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, veteran status, or any other characteristic protected by applicable federal, state, or local law.

The organization is committed to maintaining a workplace free from discrimination and harassment and to providing reasonable accommodations to qualified individuals with disabilities in accordance with applicable law.

The name and identifying details of the organization have been intentionally omitted from this confidential posting. Additional information regarding the organization, position responsibilities, and application process will be provided to qualified candidates.