The IT Infrastructure Engineer is responsible for designing, implementing, maintaining, and supporting core enterprise infrastructure services across on‑premises and cloud environments. This role ensures high availability, security, and performance of critical systems while partnering closely with cross‑functional IT and business teams.
The IT Infrastructure Engineer is responsible for designing, implementing, maintaining, and supporting core enterprise infrastructure services across on‑premises and cloud environments. This role ensures high availability, security, and performance of critical systems while partnering closely with cross‑functional IT and business teams.
Key Responsibilities
Network & Systems Engineering Design, implement, and support network infrastructure with strong understanding of Layer 2 and Layer 3 networking concepts, routing, switching, VLANs, ACLs, and wireless technologies. Configure, manage, and optimize multi‑vendor switches, wireless access points, routers, and firewalls. Administer and support Windows Server, Active Directory, and related identity services. Support cloud services (Azure preferred), including IaaS, PaaS, identity, automation, and monitoring capabilities.
Design, implement, and support network infrastructure with strong understanding of Layer 2 and Layer 3 networking concepts, routing, switching, VLANs, ACLs, and wireless technologies.
Configure, manage, and optimize multi‑vendor switches, wireless access points, routers, and firewalls.
Administer and support Windows Server, Active Directory, and related identity services.
Support cloud services (Azure preferred), including IaaS, PaaS, identity, automation, and monitoring capabilities.
Operational Support & Troubleshooting Diagnose and resolve infrastructure issues across network, server, cloud, and authentication platforms to minimize downtime. Provide escalation support to help desk, applications, and other technical teams. Participate in root‑cause analysis and implement corrective or preventive measures.
Apply for this job in 1 click
Skip the repetitive application forms
Install the Base Career Chrome Extension and autofill job applications across major job boards with your profile.
Trusted by over 500,000 job seekers on Base Career
Diagnose and resolve infrastructure issues across network, server, cloud, and authentication platforms to minimize downtime.
Provide escalation support to help desk, applications, and other technical teams.
Participate in root‑cause analysis and implement corrective or preventive measures.
Performance, Monitoring & Documentation Monitor network and system performance, identify bottlenecks, and implement improvements. Maintain accurate infrastructure documentation (configs, diagrams, runbooks, IP subnets, change histories).
Monitor network and system performance, identify bottlenecks, and implement improvements.
Maintain accurate infrastructure documentation (configs, diagrams, runbooks, IP subnets, change histories).
Security & Compliance Implement and maintain security controls, including firewalls, VLAN segmentation, ACLs, and secure configuration standards. Ensure solutions comply with enterprise standards and applicable regulations.
Implement and maintain security controls, including firewalls, VLAN segmentation, ACLs, and secure configuration standards.
Ensure solutions comply with enterprise standards and applicable regulations.
Project Work & Collaboration Work on infrastructure projects such as cloud migrations, system upgrades, network redesigns, and technology deployments. Collaborate with other IT teams, business partners, and external vendors to deliver effective infrastructure solutions.
Work on infrastructure projects such as cloud migrations, system upgrades, network redesigns, and technology deployments.
Collaborate with other IT teams, business partners, and external vendors to deliver effective infrastructure solutions.
Qualifications Required
Bachelor’s degree in Computer Science, Information Technology, or equivalent experience.
5–10 years experience in enterprise infrastructure roles covering networking, Windows systems, and/or cloud platforms.
Experience with multi‑vendor firewalls, switches, wireless, IPv4, routing protocols, NAT, VPNs, VLANs, etc.
Experience with Azure or other cloud platforms.
Preferred
Experience with SaaS infrastructure platforms and SSO/identity solutions.
Strong analytical, documentation, and communication skills.
Ability to work independently, adapt quickly, and manage priorities in a dynamic environment.
Soft Skills
Strong problem‑solving mindset and ability to work under pressure.
Team‑oriented collaborator with ability to influence without direct authority.
Customer‑focused, organized, detail‑oriented, and proactive in learning new technologies.
Compensation: $130k-$148k, depending on experience
#LI-JS1 #LI-Hybrid
Benefits Overview
401(k) Plan with Company Match: Currently match contributions dollar-for-dollar up to 4% of eligible pay; immediate vesting. Health & Welfare Benefits: Employer provided medical, dental, vision, prescription drug, Employee Assistance Program and accident & illness coverage. Life and Disability Insurance : Employer provided basic life insurance and AD&D valued at 50K coverage amount with the option for voluntary buy up for additional coverage. Time Off: Flexible non-accrual vacation; company holidays per policy. (For California employees, this is separate from California paid sick leave, if applicable.) Expenses : Business travel and related expenses reimbursed per company policy.
Reasonable Accommodations If you need assistance or accommodations during the application or interview process, please contact us at ta@wearelegence.com or your dedicated recruiter with the job title and requisition number.
Employment Eligibility Candidates must have current work authorization in the U.S.; visa sponsorship is not available for this position.
Third-Party Recruiting Disclaimer Legence and its affiliates do not accept unsolicited resumes from agencies; any such submissions without a prior signed agreement authorized by Legence Holdings LLC's CHRO or Director of Talent Acquisition will not incur fees and are considered property of Legence.
Pay Disclosure & Considerations Where pay ranges are indicated, please note that a successful candidate’s exact pay will be determined based relevant job -related factors, including any of the following: candidate’s experience, skills, and qualifications, as well as geographic and market considerations. We are committed to ensuring fair and competitive compensation for all employees and comply with all applicable salary transparency laws.
Equal Employment Opportunity Employer Legence and its affiliate companies are proud to be an equal opportunity workplace. We are committed to equal employment opportunity regardless of race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), marital or familial status, national origin, age, disability, genetic information (including family medical history), political affiliation, military service, other non-merit-based factors, and any other characteristic protected under applicable local, state or federal laws and regulations. EEO is the Law
About Legence
Construction10000 employeesFounded 1914
Public U.S. building-performance company providing engineering, consulting, installation, and maintenance services for mission-critical building systems.
