Infrastructure Engineer

SLR International Corporation; New York (NY); On-site; USD 100,000 - 150,000; Full time

Job summary

SLR International Corporation, a global consultancy, seeks an Infrastructure Engineer to maintain and enhance the global infrastructure across on‑prem and cloud environments. You will manage Windows Server, AD/Entra ID, DNS, DHCP, and modern backup/DR and monitoring, ensuring stability, security, and performance across regional offices and datacenters.

You will work under the Regional Infrastructure Manager, contribute to standardisation, participate in project delivery, and support incident

Qualifications

• Essential professional IT support and infrastructure experience across servers, storage, networking, and cloud operations.
• Hands-on with Windows Server, AD/Entra ID, DNS, DHCP, Group Policy, and enterprise management.
• Familiar with virtualization (VMware/Hyper-V) and cloud platforms (Azure).
• Experience with patching, monitoring, backup/DR, and incident/change management.
• Strong documentation, communication, and stakeholder engagement skills.

Responsibilities

• Provide 3rd-line technical support and incident resolution across global infrastructure.
• Maintain on‑prem and cloud server environments, patching, hardening, and lifecycle management.
• Manage Active Directory/Entra ID, DNS, DHCP, GPO, and OU structures; support hybrid identity.
• Deploy and troubleshoot virtualization platforms and backup/DR solutions.
• Monitor Azure resources, identify security posture, and optimize costs and performance.
• Contribute to standardisation, project delivery, and cross‑site infrastructure upgrades.

Skills

IT support

Core infrastructure

Networking

Active Directory

Cloud operations

Education

IT Degree in Computer Science

Azure Administrator

VMware VCP

Cisco CCNA

CompTIA Network+

ITIL Foundation

Tools

VMware vSphere/ESXi

Hyper-V

Azure

Entra ID

DNS/DHCP

Group Policy

Job description

JOB SUMMARY:

The Infrastructure Engineer is a technical specialist role responsible for maintaining, supporting, and improving the global infrastructure platform across on-premises and cloud environments. This role provides deep technical expertise across servers, storage, networking LAN, WAN and Wifi, virtualisation, backup + DR, and monitoring systems. The role ensures the stability, resilience, performance, and security across infrastructure services that underpins business operations. Engineers deliver hands‑on technical work, support incidents, participate in project delivery, implement change, and contribute to global standardisation and modernisation initiatives. Operating under the guidance of the Regional Infrastructure Manager, this position is crucial in ensuring infrastructure availability across regional offices, datacentres, remote sites, and cloud workload.

MAIN DUTIES AND RESPONSIBILITIES:

Duties and responsibilities would include: Core Infrastructure Engineering Troubleshoot infrastructure related issues by providing 3rd line support to supporting functions. Maintain both on-prem and cloud Server environments (Windows 2016/2019/2022), including installation, configuration, Patch management and lifecycle management. Manage Active Directory, Entra ID, DNS, DHCP, Group Policy, OU structure, replication. Support hybrid identity (AAD Connect, Cloud Sync), MFA, Conditional Access, and identity governance baselines. Deploy, maintain, and troubleshoot virtualisation platforms (VMware vSphere/ESXi or Hyper‑V). Perform server builds, OS hardening, patching, software deployment, and configuration baseline enforcement. Support Back up and DR functions. Azure & Cloud Infrastructure Support Azure VMs, storage accounts, VNets, NSGs, load balancers, recovery vaults. Maintain Azure backup & site recovery (ASR) configurations and replication health. Assist with AVD, image management, FSLogix profiles, and session host maintenance. Monitor cloud resource performance, cost, and security posture. Storage, Backup & DR Administer SAN/NAS platforms (NetApp, Dell EMC, HPE, Synology, or equivalent). Manage storage provisioning, LUNs, shares, quotas, snapshots, and performance tuning. Operate backup systems (Veeam, Rubrik, Commvault, Azure Backup): Contribute to disaster recovery testing, documentation, and RPO/RTO validation. Networking & Connectivity (Infrastructure‑Focused) Support network operations where required by region: VLAN management. Switch configuration (Cisco, HP, Meraki, UniFi). Firewall rule updates and packet tracing (Fortinet/Palo Alto/Cisco ASA). SD‑WAN/VPN monitoring and troubleshooting. Perform connectivity diagnostics for servers, cloud, and datacentre infrastructure. Wifi Management, Monitoring and Deployment. Monitoring Use monitoring platforms (SolarWinds, PRTG, LogicMonitor, Azure Monitor) to detect performance issues and faults. Support scripting/automation (PowerShell preferred) for routine tasks such as: User and AD object management. Server compliance checks. Bulk configuration changes. Backup validation scripts. Incident and Change Management Provide 3rd‑line technical support for the company. Perform root‑cause analysis for recurring issues and contribute to problem remediation plans. Execute changes using approved procedures, including risk assessment, rollback planning, and stakeholder communication. Project Work & Technical Delivery Participate in infrastructure upgrades, migrations, server refreshes, cloud onboarding, and network modernisation projects. Assist with datacentre rack/stack, cabling, hypervisor upgrades, storage refresh, and backup platform improvements. Support global standardisation of builds, tools, and infrastructure frameworks. Documentation & Configuration Management Create and maintain: Build documents Infrastructure diagrams Asset and configuration records Ensure documentation reflects current operating environments and engineering standards. Create KB for service line functions.

SKILLS/KNOWLEDGE/EXPERIENCE:

Essential Professional experience in IT support, minimum 3+ years under Service Desk, systems administration, networking, or cloud operations. Strong experience supporting core infrastructure technologies (servers, storage, networking, VMs). Solid hands‑on experience with Windows Server, Active Directory/Entra ID, Group Policy, and enterprise management platforms. Practical knowledge of virtualisation (VMware/Hyper‑V) and cloud systems (Azure preferred). Experience with patching, monitoring, and configuration‑management tools. Understanding of backup, replication, and disaster‑recovery concepts. Ability to troubleshoot complex technical issues across multiple domains. Strong documentation, communication, and stakeholder‑engagement skills. Desirable Experience working in a global or multi‑site environment. Familiarity with AVD, O365, M365, and endpoint‑management technologies. Exposure to enterprise networking (routing, switching, firewalling, VPN). Knowledge of cybersecurity practices, vulnerability management, and compliance frameworks. Experience with ITIL processes (incident, change, problem).

EDUCATION:

QUALIFICATIONS/PROFESSIONAL MEMBERSHIPS: IT Degree in Computer science or similar. Microsoft (Azure Administrator, Windows Server, Identity & Access) VMware (VCP) Cisco (CCNA) CompTIA (Network+, Security+, Server+) ITIL Foundation

PERSONAL ATTRIBUTES:

Highly technical, analytical, and methodical in fault resolution. Able to work independently within global distributed teams. Strong sense of ownership, reliability, and attention to detail. Resilient and calm during incident response and critical infrastructure events. Committed to maintaining high standards of security and operational excellence. OTHER Participation in on‑call support rota may be required. Willingness to travel regionally for site work or datacentre tasks. Flexibility to support global operations across different time zones

Diversity, equity, and inclusion:

Diversity, equity, and inclusion (DE&I) are at the core of who we are and want to be. SLR is proud to be an Equal Employment Opportunity / Affirmative Action Employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, gender, sexual orientation, civil union status, age, citizenship, marital status, disability, gender identity or expression, genetic information, or veteran status. At SLR, we embrace diverse cultures, perspectives, skills, and experiences within and outside our organization. We respect and celebrate differences and want to ensure that we continuously strive to build a place where everyone feels included and is encouraged to be their authentic self. We are committed to these values, and our SLR Culture & Diversity Team works to actively promote diversity, equity, and inclusion across our people and talent processes, operations, and client work around the world. If you have a disability and need reasonable accommodations at any point in the application or interview process, please contact us at [e-mail]. We’re Making Sustainability Happen. We don’t have all the answers to the complex sustainability challenges faced by humanity today. But we’re working on it. We are a consultancy with 4,500+ employees, working on projects in over 125 countries around the world. When you join SLR, you’ll work alongside some of the world’s leading advisors and technicians on projects of global importance in the environmental space. We know sustainability starts from within. And no matter how good we are today, we can always do better. We continually work on our internal ethics to set the standard for organisations and reflect the advice we give to clients.