Senior Infrastructure Engineer

Senior Infrastructure EngineerActian, a division of HCLSoftware, is the leader in data intelligence. We develop high-performance database technologies that power the world's most demanding industries. As a Senior Infrastructure Engineer, you are part of a mission-critical team that ensures our global engineering force has the most reliable and efficient build environments possible.We are seeking an experienced and highly skilled Senior Infrastructure Engineer to support and operate a modern hybrid infrastructure spanning on-premises datacenters, global office locations, and multiple public cloud environments. This is an onsite role and is responsible for maintaining the reliability, performance, scalability, and security of core infrastructure services including Windows Server environments, enterprise networking, identity platforms, endpoint management systems, cloud infrastructure, and security technologies. The ideal candidate combines deep technical expertise with a hands-on operational mindset and is comfortable working across systems, networking, cloud, identity, endpoint management, and security domains. This position partners closely with Infrastructure Architecture and Security teams to drive operational excellence, improve platform reliability, and maintain a strong security posture across the organization.Infrastructure & Systems AdministrationAdminister and maintain Windows Server environments, including Active Directory, DNS, DHCP, Group Policy, and related infrastructure services.Support enterprise virtualization platforms such as VMware, Proxmox, or equivalent hypervisors.Manage server lifecycle operations including provisioning, patching, monitoring, upgrades, and performance optimization.Ensure high availability and resilience of critical infrastructure systems.Deploy, manage, and troubleshoot workloads across Google Cloud Platform (GCP), Microsoft Azure, and Amazon Web Services (AWS).Support hybrid connectivity between on-premises infrastructure and public cloud environments.Implement and maintain cloud networking, identity integration, and security controls.Collaborate with architecture teams on cloud adoption and modernization initiatives.Support Cisco datacenter networking environments, including routing, switching, and core network services.Administer Cisco Meraki infrastructure across corporate offices and remote locations.Troubleshoot network performance, connectivity, and infrastructure-related incidents.Maintain secure network segmentation and interconnectivity across environments.Manage identity platforms including Active Directory and Okta.Support authentication, federation, SSO integrations, and identity lifecycle management.Implement secure authentication controls aligned with Zero Trust principles.Administer enterprise endpoint management platforms including Jamf and Microsoft Intune.Manage device enrollment, configuration policies, compliance standards, and lifecycle management.Enforce endpoint security baselines and compliance requirements.Implement and maintain security best practices across systems, networks, and cloud environments.Manage integrations with SIEM and security monitoring platforms. Support infra security teams to improve monitoring, detection, and response capabilities.Manage firewall policies and secure network access solutions.Implement and maintain client VPN and site-to-site VPN connectivity. Support modern security architectures including SASE and Zero Trust Network Access (ZTNA).Support colocation and on-premises datacenter environments.Perform hardware installation, rack-and-stack activities, cabling, optics installation, equipment replacement, and infrastructure maintenance.Manage infrastructure asset lifecycle planning and inventory.Coordinate with vendors and colocation providers on physical infrastructure projects and remote hands services.Support infrastructure deployments and upgrades across global office locations.Provide on-site troubleshooting and remediation when required.Partner with regional IT teams to ensure infrastructure consistency and operational reliability worldwide.Required Qualifications5+ years of experience in enterprise infrastructure engineering.Strong expertise in Windows Server administration and Active Directory.Experience with enterprise virtualization platforms (VMware, Proxmox, or similar).Hands-on experience supporting Cisco networking environments.Experience managing Cisco Meraki networks.Working knowledge of AWS, Azure, and/or Google Cloud Platform.Experience with identity platforms such as Okta or Microsoft Entra ID (Azure AD).Experience managing endpoints through Jamf and/or Microsoft Intune.Experience implementing and supporting VPN technologies.Familiarity with security monitoring, SIEM platforms, and incident response processes.Strong troubleshooting and problem-solving abilities.Comfortable performing hands-on datacenter work including hardware installation and maintenance.Preferred QualificationsExperience with Cisco Nexus or other datacenter switching platforms.Exposure to SASE, Zero Trust, or identity-based networking architectures.Experience supporting hybrid cloud environments.Knowledge of infrastructure security hardening and vulnerability management.Experience operating within colocation datacenter environments.Experience supporting global or multi-site infrastructure deployments.Familiarity with infrastructure monitoring and observability platforms.Experience with infrastructure automation tools such as Terraform, PowerShell, Python, or similar technologies.What Makes You SuccessfulStrong analytical and troubleshooting skills.Excellent communication and documentation abilities.Ability to work across infrastructure, networking, cloud, and security disciplines.Comfortable balancing operational support responsibilities with project-based initiatives.Collaborative mindset with a focus on continuous improvement and operational excellence.Travel Requirements Occasional travel to company offices, colocation datacenters, and infrastructure deployment sites may be required. Travel may include datacenter buildouts, infrastructure upgrades, equipment migrations, and strategic technology initiatives.