Senior Network Engineer
BlinkRx · Pittsburgh, PA · 6 days ago
RemoteRemoteInformation TechnologyFull-time
About the role
We are looking for a Senior Network Engineer to join our Networking team. In this role, you will be a hands-on owner of our hybrid network — spanning physical office environments, distributed sites, and AWS cloud connectivity. The day-to-day work is rooted in physical infrastructure: Meraki switches and access points, Palo Alto firewalls, Starlink and ISP connectivity, site-to-site VPN, and the routing and switching that keeps our offices, warehouses, and remote sites online.
Network Infrastructure
- Manage, monitor, and maintain our office, site, and distributed network infrastructure — Meraki switches and wireless access points, Palo Alto firewalls, Starlink links, ISP connections, and site-to-site VPN
- Design and deploy office and site networks: switching, routing, VLAN segmentation, wireless coverage, and secure remote connectivity
- Tune wireless deployments — perform RF planning, capacity modeling, channel optimization, and troubleshoot roaming and interference issues
- Configure and harden Palo Alto firewalls and VPN — security policies, NAT, IPSec tunnels, Global Protect, and Panorama-based centralized management
- Troubleshoot complex Layer 1 through Layer 7 issues across the physical and logical stack using packet captures (Wireshark, tcpdump), ThousandEyes, Fiddler, nmap, and other diagnostic tools
- Maintain monitoring and alerting via PRTG, Nagios, Grafana, New Relic, and ThousandEyes
- Serve as the technical escalation point for network incidents — own production outages from first alert through root cause and post-incident improvements
- Participate in on-call rotation
Cloud Network Operations
- Maintain our multi-VPC AWS environment: VPCs, subnets, route tables, Security Groups, NACLs, and VPC peering
- Operate Transit Gateway, Direct Connect, and Site-to-Site VPN connectivity between AWS and our physical sites
- Manage Route 53 public and private zones, DNS forwarders, and hybrid name resolution
- Support and tune AWS Load Balancers (ALB, NLB) for application teams
- Troubleshoot connectivity issues spanning AWS, on-prem, and Kubernetes-based microservices environments
Automation and Infrastructure-as-Code
- Use Terraform (and Terragrunt where applicable) to deploy and manage networking resources — VPCs, firewall rules, DNS, routing, and Security Groups
- Contribute to and maintain CI/CD pipelines for network changes through GitHub workflows, peer review, and automated validation
- Create tools and scripts (Python, Bash) to automate repetitive operational work and reduce toil
- Prevent configuration drift through code-first network management
Security and Operational Excellence
- Configure, harden, and patch network devices and services aligned with security best practices
- Monitor security alerts, investigate incidents, and coordinate with the security team on remediation
- Validate firewall changes for least-privilege and operational impact before production deployment
- Maintain network documentation, topology diagrams, runbooks, and change records
Collaboration
- Partner with engineering teams to troubleshoot network design and connectivity in AWS and Kubernetes-based microservices environments
- Provide technical consulting on network architecture decisions
- Communicate clearly with technical and non-technical stakeholders during incidents, changes, and planned maintenance
- Work with IT leadership to evaluate new products, vendor roadmaps, and infrastructure investments
- Backup the systems engineering team for Windows and Linux server administration when network issues overlap with server or application behavior