Senior Network Engineer

For decades, DTN has been the silent force behind some of the world’s most critical industries—helping businesses navigate complexity, uncertainty, and risk with smarter, faster decisions. From agriculture to energy to weather intelligence, our proprietary Operational Decisioning Platform transforms raw data into decision-grade insights—enabling companies to optimize supply chains, ensure market stability, and safeguard infrastructure against disruption. We don’t follow trends—we set the standard for precision, trust, and operational impact.

DTN is at an exciting inflection point. Building off a foundation of financial strength, profitability, and industry trust, we’re accelerating growth and expanding our global footprint. Our purpose-built solutions—powered by AI and honed by decades of vertical expertise—are helping some of the world’s most significant enterprises thrive amid operational constraints and uncover new opportunities in a fast-changing world.

J ob Description

DTN is seeking an experienced, hands-on Senior Network Engineer for a project/contract engagement supporting enterprise network infrastructure projects and day-to-day network operations.

In this role, you will lead and execute complex network infrastructure initiatives involving network migrations, cloud networking, F5 load balancing, enterprise firewalls, routing and switching, and ongoing network infrastructure support. You will work across on-premises data centers, wide area networks (WAN), Internet connectivity, and cloud environments to maintain secure, reliable, and highly available enterprise network services.

The ideal candidate brings 10+ years of enterprise network engineering experience, expert-level knowledge of F5 BIG-IP, strong routing and firewall expertise, and a proven ability to lead infrastructure projects from technical design through implementation and operational handoff.

This position requires technical leadership, detailed implementation planning, cross-functional coordination, and advanced operational troubleshooting. You will take ownership of assigned projects, proactively identify technical dependencies and risks, develop comprehensive implementation and rollback plans, and execute network changes with minimal business disruption.

Alongside project delivery, you will support daily enterprise network operations, incident response, maintenance, troubleshooting, and service reliability. The successful candidate must effectively balance project commitments with operational priorities and participate in a rotating on-call schedule, including scheduled after-hours support.

What You Will Be Responsible For

F5 Load Balancing and Application Delivery

• Design, configure, administer, maintain, and troubleshoot F5 BIG-IP environments, with a strong emphasis on Local Traffic Manager (LTM).

• Manage virtual servers, pools, pool members, health monitors, iRules, persistence profiles, network address translation (NAT), and related application delivery configurations.

• Troubleshoot complex application connectivity issues involving load balancers, enterprise firewalls, network routing, DNS, SSL/TLS, and backend application services.

• Support high-availability configurations, failover testing, software upgrades, and platform migrations.

• Implement, maintain, and troubleshoot SSL offloading and certificate-related configurations.

• Plan and execute F5 migrations, including application dependency analysis, configuration migration, testing, validation, and production cutover activities.

• Support F5 Distributed Cloud (F5 XC) implementations and migrations, including transitions of services from F5 BIG-IP to F5 Distributed Cloud where applicable.

• Ensure application delivery solutions meet enterprise requirements for availability, reliability, performance, and operational continuity.

Enterprise Routing and Switching

• Design, implement, maintain, and troubleshoot enterprise Layer 2 and Layer 3 network infrastructure.

• Configure, administer, and troubleshoot routing protocols, including Border Gateway Protocol (BGP), Open Shortest Path First (OSPF), and Enhanced Interior Gateway Routing Protocol (EIGRP).

• Manage route redistribution, routing policies, and complex network routing configurations.

• Support Cisco routers and switches, including Cisco Nexus platforms where applicable.

• Troubleshoot virtual local area networks (VLANs), trunking, Spanning Tree Protocol (STP), inter-VLAN routing, and complex Layer 2/Layer 3 connectivity issues.

• Analyze network routing paths, infrastructure dependencies, and traffic flows to support application migrations and network changes.

• Implement routing and switching changes required for infrastructure migrations, cloud connectivity, and network upgrades.

• Support network resiliency, redundancy, fault tolerance, and high-availability designs.

Firewall Administration and Network Security

• Configure, administer, maintain, and troubleshoot enterprise firewall platforms, particularly Palo Alto Networks and Cisco ASA/Firepower.

• Develop, implement, and validate firewall policy changes, NAT rules, virtual private network (VPN) configurations, and high-availability configurations.

• Support firewall migrations, including rule conversion, policy cleanup, configuration validation, and verification of security controls.

• Analyze firewall policies, traffic logs, and session flows to identify and resolve network connectivity and application access issues.

• Collaborate with information security teams to ensure network changes comply with established security requirements and change management standards.

• Support Palo Alto Panorama for centralized firewall administration, policy management, and deployment.

• Maintain secure and reliable connectivity across enterprise network environments while minimizing operational risk.

Cloud Networking and Hybrid Infrastructure

• Design, implement, support, and troubleshoot network connectivity between on-premises data centers and cloud environments, particularly Amazon Web Services (AWS), Oracle Cloud Infrastructure (OCI), and Microsoft Azure.

• Support cloud networking architectures involving AWS Virtual Private Clouds (VPCs), Azure Virtual Networks (VNets), and OCI Virtual Cloud Networks (VCNs).

• Configure and troubleshoot cloud subnets, route tables, routing configurations, and network security controls.

• Configure, maintain, and troubleshoot cloud routing, site-to-site VPN connections, AWS Direct Connect, Azure ExpressRoute, and OCI FastConnect.

• Support AWS Transit Gateway and equivalent cloud routing architectures.

• Analyze and troubleshoot cloud security groups, network access control lists (NACLs), cloud firewall policies, and routing dependencies.

• Lead or support the migration of applications and network services from on-premises data centers to cloud environments.

• Troubleshoot end-to-end application connectivity across data centers, WAN infrastructure, Internet connections, firewalls, load balancers, and cloud platforms.

• Coordinate with cloud, infrastructure, application, and security teams to support reliable hybrid network connectivity.

Day-to-Day Network Operations and Infrastructure Support

• Support daily operations of enterprise network infrastructure across data centers, corporate locations, WAN, wireless networks, Internet connectivity, and cloud environments.

• Monitor network health, availability, performance, and capacity, proactively identifying and resolving issues before they affect business-critical services.

• Troubleshoot and resolve network incidents involving routers, switches, firewalls, load balancers, wireless infrastructure, routing protocols, and cloud connectivity.

• Provide advanced technical escalation support for complex network issues, collaborating with other IT teams to restore services and minimize business impact.

• Perform routine network maintenance, configuration changes, sof