Senior Infrastructure Engineer

About Definitive Healthcare

At Definitive Healthcare (NASDAQ: DH), we’re passionate about turning data, analytics, and expertise into meaningful intelligence that helps our customers achieve success and shape the future of healthcare. We empower them to uncover the right markets, opportunities, and people—paving the way for smarter decisions and greater impact. Headquartered just outside of Boston, Massachusetts, Definitive Healthcare operates across North America, Europe, and India, supporting a growing global client base of more than 2,400 customers since our founding in 2011.

We’re also a great place to work. In 2024 and 2025, we earned multiple workplace honors, including Built In’s 100 Best Places to Work in Boston, a Stevie Bronze Award for Great Employers, and recognition as a Great Place to Work in India. We foster a collaborative, inclusive culture where diverse perspectives drive innovation. Through programs like Definitive Cares and our employee-led affinity groups we strive to promote connection, education, and inclusion.

We are looking for an experienced and versatile Infrastructure Engineer to join our team. This is a broad, hands-on role for someone who is comfortable operating across the modern infrastructure stack — spanning cloud platforms, virtualization, systems administration, automation, and network engineering. This role replaces a traditional network-only function and reflects how we think about infrastructure today: as an interconnected discipline where networking, computing, security, and automation are inseparable.

You will be a key contributor to the reliability, scalability, and security of our platforms, and a go-to escalation point for complex infrastructure challenges.

• Support the maintenance of both on prem and cloud infrastructure across AWS, Azure, or GCP including compute, storage, networking, and identity services
• Manage and optimize hybrid connectivity between on-premises environments and cloud platforms (VPN, Express Route/Direct Connect, Transit Gateway)
• Govern infrastructure as code (IaC) using tools such as Terraform or Pulumi, ensuring environments are reproducible and version-controlled

• 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 DNS, DHCP, and IP address management (IPAM) across hybrid environments
• Review and enforce network security policies, firewall rules, and segmentation strategies in collaboration with the security team

• Administer virtualized environments (VMware vSphere, Hyper-V, or equivalent) and container platforms (Kubernetes, Docker)
• Manage server operating systems at scale across Linux (RHEL/Ubuntu) and Windows Server

• Maintain observability tooling including infrastructure monitoring, alerting, and log aggregation (e.g. Datadog, Prometheus/Grafana, Splunk, or similar)
• Participate in an on-call rotation for infrastructure-level incidents, driving timely resolution and thorough post-incident reviews
• Contribute to backup, disaster recovery, and business continuity planning and testing
• Partner with the security team on vulnerability management, patching cadences, and hardening standards

• Identify and drive automation opportunities to reduce toil and improve consistency across the infrastructure estate
• Contribute to capacity planning and infrastructure roadmap discussions
• Mentor P1/P2 engineers and share knowledge through internal documentation and team sessions

• 4–7 years of experience in infrastructure, network engineering, or a related discipline
• Strong networking fundamentals and hands-on experience with enterprise network platforms (Cisco, Juniper, Palo Alto, Fortinet, or similar)
• Proven experience with at least one major cloud platform (AWS, Azure, or GCP) — ideally with a cloud associate-level certification or equivalent practical experience
• Experience managing Linux and Windows Server environments…