Senior Infrastructure Engineer

Definitive Healthcare, US•Framingham, MA

23h

About The Position

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.

Requirements

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 in production
Familiarity with containerization concepts and platforms (Docker, Kubernetes)
Experience with monitoring and observability tooling in a production environment
Strong troubleshooting skills across network, compute, and storage layers
Comfortable working in an on-call capacity for infrastructure incidents

Nice To Haves

Working knowledge of infrastructure as code and configuration management tools (Terraform, Ansible, or similar)
Experience with SD-WAN platforms (e.g. Meraki, Viptela/Cisco SDWAN, 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: CCNA/CCNP, AWS Solutions Architect, Azure Administrator (AZ-104), CKA, or equivalent

Responsibilities

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, ExpressRoute/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