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Senior Network Engineer
Senior Network EngineerAnsira Partners • St. Louis, MO, United States
Senior Network Engineer

Senior Network Engineer

Ansira Partners • St. Louis, MO, United States
[job_card.variable_days_ago]
[job_preview.job_type]
  • [job_card.full_time]
[job_card.job_description]

Our Sr. Cloud Engineer will serve as the technical authority for the network layer of a modern, cloud-first enterprise. In this role, you'll architect, implement, and optimize core network services across hybrid and multi-cloud environments. You will lead strategy and execution around F5 load balancing, next-generation firewalling (Palo Alto and FortiGate), and cloud interconnect design to ensure scalability, high availability, seamless performance, and uncompromising security.

Duties / Responsibilities :

  • Design, build, and optimize cloud-native network architectures across AWS, Azure, and GCP.
  • Engineer multi-cloud connectivity - Direct Connect, ExpressRoute, and Interconnect - for high-performance, redundant global networks.
  • Own F5 in the cloud (BIG-IP VE / NGINX / Distributed Cloud) for advanced load balancing, traffic management, and security.
  • Lead firewall strategy across Palo Alto (Panorama, GlobalProtect) and Fortinet FortiGate for segmentation, VPNs, and advanced threat protection.
  • Architect and secure VPCs, VNets, and shared service models - routing, peering, NAT, and private connectivity.
  • Integrate Cisco virtual appliances and cloud-native routing solutions for scalable, secure interconnectivity.
  • Automate everything - leverage Python, Ansible, or Terraform to enforce consistency and speed up deployments.
  • Monitor and optimize performance across hybrid and multi-cloud networks using advanced observability and telemetry tools.
  • Lead incident response and root cause analysis for complex network or connectivity issues.
  • Collaborate cross-functionally with Cloud, Security, and DevOps teams to ensure seamless integration and security alignment.

Required Skills / Abilities :

  • 7+ years of experience in network engineering, with 3+ years focused on cloud networking.
  • Deep hands-on expertise with Azure (VNets, NSGs, Front Door, peering, route tables, Private DNS).
  • Strong experience with AWS (VPCs, Transit Gateway, Route 53) and GCP (VPCs, Interconnect, Cloud DNS) .
  • Master-level skills in F5 BIG-IP VE, NGINX, or F5 Distributed Cloud.
  • Proven experience managing Palo Alto and FortiGate in cloud deployments.
  • Advanced routing and security knowledge - BGP, IPSec, GRE, NAT, segmentation, and high-availability designs.
  • Scripting and automation skills (Python, Ansible, Terraform) - you treat infrastructure as code.
  • Performance and reliability mindset - you know how to design for scale and uptime.
  • Education and Experience :

  • Bachelor's degree in computer science, Information Technology or related field or equivalent years of experience.
  • Proficiency in operating systems and common applications.
  • Strong troubleshooting and problem-solving skills.
  • Excellent working knowledge of networking concepts.
  • Strong technical knowledge with 4+ years hands-on experience in the following technologies :
  • Next gen firewalls

  • F5 load balancer
  • Networking TCP / IP stack and troubleshooting
  • Windows (OS, services, registry, GPO, access controls, Domain, etc..)
  • PowerShell, YAML, JSON, XML, Python, or similar scripting languages
  • Windows IIS Services and experience troubleshooting applications running on that platform.
  • Linux / Tomcat / Apache based systems, and experience troubleshooting applications running on that platform.
  • Experience with .Net, Cold Fusion, and Java runtime platforms.
  • Terraform, Chef, Ansible or Puppet
  • Docker \Container's technologies
  • Azure Cloud (AWS equivalent a plus)
  • Must have experience delivering PaaS services in public cloud.
  • Required experience with Public Cloud platform using Microsoft Azure and / or commercial cloud platform.
  • Must have excellent written and oral communications, including technical documents, and process documents.
  • Ability to articulate ideas clearly and concisely.
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