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Definitive Healthcare is a NASDAQ-listed healthcare data and analytics company seeking a Senior Infrastructure Engineer to join their team. This is a broad, hands-on role spanning cloud platforms, virtualization, systems administration, automation, and network engineering—combining traditional network functions with modern infrastructure disciplines including computing, security, and automation. What You'll Do • Support maintenance of on-premises and cloud infrastructure across AWS, Azure, or GCP, including compute, storage, networking, and identity services; manage and optimize hybrid connectivity using VPN, ExpressRoute, and Direct Connect • Participate in ongoing management of network infrastructure including routers, switches, firewalls, and load balancers; manage and troubleshoot LAN/WAN, SD-WAN, VPN, BGP/OSPF, and VLAN environments • Administer virtualized environments such as VMware vSphere and Hyper-V, as well as container platforms like Kubernetes and Docker; manage server operating systems at scale across Linux (RHEL/Ubuntu) and Windows Server • Maintain observability tooling including infrastructure monitoring, alerting, and log aggregation; participate in on-call rotation for infrastructure-level incidents and contribute to backup, disaster recovery, and business continuity planning • Identify and drive automation opportunities using infrastructure as code tools such as Terraform or Pulumi; mentor junior engineers and contribute to capacity planning and infrastructure roadmap discussions What You Need • 4–7 years of experience in infrastructure, network engineering, or a related discipline • Strong networking fundamentals and hands-on experience with enterprise network platforms such as Cisco, Juniper, Palo Alto, or Fortinet • Proven experience with at least one major cloud platform (AWS, Azure, or GCP) with cloud associate-level certification or equivalent practical experience • Experience managing Linux and Windows Server environments in production; familiarity with containerization concepts and platforms such as Docker and Kubernetes • Strong troubleshooting skills across network, compute, and storage layers; comfortable working in an on-call capacity for infrastructure incidents Nice to Have • Working knowledge of infrastructure as code and configuration management tools such as Terraform and Ansible • Experience with SD-WAN platforms such as Meraki, Viptela/Cisco SDWAN, or VMware VeloCloud • Scripting proficiency in Python, Bash, or PowerShell for automation; exposure to DevOps practices and CI/CD pipelines • Experience in a zero-trust network architecture project; relevant certifications such as CCNA, CCNP, AWS Solutions Architect, Azure Administrator (AZ-104), or CKA $115,000–$173,000 base salary per year. Employees may be eligible to participate in a company bonus or commission plan. Comprehensive benefits package includes medical, dental, and vision coverage, unlimited paid time off, and 401(k) plan with employer contribution.