Sr. Network Engineer - Enterprise-level experience required

Our Fortune 500 company is driving a digital transformation and looking for forward-thinking innovators to disrupt how our industry thinks about and uses technology. As one of the world's leading employee benefits providers, we help millions of people gain affordable access to benefits that help them protect their families, their finances and their futures. Are you an asker of questions, a solver of problems, and a challenger of the status quo? Our mission is to provide a differentiated customer experience and exceed the expectations people have of technology at any company — not just insurers. We are seeking individuals to join our team of talented IT professionals who share never-ending passion and an unwavering focus on our customer experience. Team members comfortable working in an agile, fast-paced, and delivery-focused environment thrive in our environment where we value an entrepreneurial spirit and those who challenge the status-quo. Unum is changing, and we’re excited about what’s next. Join us. General Summary: We are seeking a highly experienced Senior Network Engineer with 10+ years of enterprise networking experience to design, implement, and support next-generation network infrastructure across data center, cloud, and hybrid environments. The ideal candidate will be a technical expert in firewalls, Zero Trust Network Access (ZTNA), application delivery, VXLAN EVPN, and cloud networking, with a strong background in network architecture and infrastructure modernization. This role requires a combination of senior technical leadership, strategic thinking, and exceptional communication skills. The successful candidate will work closely with Leadership, Enterprise Architecture, Security, Cloud, and Infrastructure teams to develop and execute network strategies that support business growth, security, scalability, and operational excellence. This individual will be based out of Chattanooga TN (UNUM HQ) and will play a critical role in shaping the organization's network strategy. Required Qualifications Experience 10+ years of experience in enterprise network engineering, architecture, and operations. Proven experience designing and supporting large-scale enterprise and data center networks. Demonstrated success leading complex infrastructure projects and network modernization initiatives. Technical Expertise Expert-level experience with enterprise firewall technologies and security architecture. Extensive experience designing and implementing ZTNA and Zero Trust networking solutions. Strong expertise in application delivery technologies, including load balancing and traffic management. Deep hands-on experience with VXLAN EVPN, spine-leaf architecture, and modern data center networking. Strong knowledge of routing and switching protocols, including BGP, OSPF, and EVPN. Experience designing and supporting AWS and/or Azure cloud networking environments. Strong understanding of network segmentation, resiliency, disaster recovery, and high-availability architectures. Experience with network automation, Infrastructure as Code (IaC), and orchestration tools is preferred. Advanced troubleshooting and analytical skills across network, security, and application layers. Required Technical Skills Firewalls & Security Palo Alto Networks F5 Distributed Cloud (WAF, BOT, API Protection) ZTNA & Secure Access Zscaler SASE Architectures Application Delivery F5 BIG-IP Cloud-native load balancing solutions Data Center Networking Cisco Nexus Arista EOS Spine-Leaf Architecture VXLAN EVPN Multi-Tenant Network Fabrics Cloud Networking AWS VPC, Transit Gateway, Direct Connect Azure Virtual Network, Virtual WAN, ExpressRoute Hybrid Cloud Connectivity Cloud Network Security Automation Python Ansible Terraform Key Competencies Enterprise Network and Perimeter Security Architecture Zero Trust & ZTNA Data Center Networking VXLAN EVPN Application Delivery & Load Balancing Cloud Networking & Hybrid Connectivity Executive Communication Stakeholder Management Technical Leadership & Mentoring Problem Solving & Decision Making Education & Certifications Education Bachelor's degree in computer science, Information Technology, Engineering, or related field (or equivalent experience). Preferred Certifications CCNP Enterprise or CCIE Enterprise Infrastructure PCNSE (Palo Alto Networks Certified Network Security Engineer) AWS Advanced Networking – Specialty Azure Network Engineer Associate Arista ACE Primary Responsibilities Network Architecture & Design Design and maintain scalable, resilient, and secure enterprise network architectures across on-premises, cloud, and hybrid environments. Lead network transformation initiatives, including data center modernization, cloud adoption, network segmentation, and automation. Evaluate emerging networking technologies and provide recommendations to leadership and architecture teams. Ensure network solutions meet performance, availability, security, and business continuity requirements. Network Security & Zero Trust Serve as the subject matter expert for enterprise firewall technologies and network security architecture. Design, implement, and optimize Zero Trust Network Access (ZTNA) solutions and secure remote access frameworks. Develop network segmentation and micro-segmentation strategies to support Zero Trust initiatives. Partner with Information Security teams to ensure compliance with security standards, policies, and regulatory requirements. Data Center Networking – VXLAN EVPN Design, deploy, and support modern data center network fabrics utilizing VXLAN EVPN architectures. Implement scalable Layer 2 and Layer 3 network virtualization solutions across multi-site environments. Support spine-leaf architectures and network fabric technologies to improve scalability and operational efficiency. Troubleshoot complex routing, switching, overlay, and underlay network issues. Develop operational standards and best practices for EVPN-based environments. Application Delivery & Load Balancing Design and support enterprise application delivery platforms, including load balancing, traffic management, SSL offloading, and high availability services. Ensure optimal performance, availability, and security of business-critical applications. Collaborate with application teams to architect reliable and scalable application connectivity solutions. Resolve complex application performance and network-related issues. Cloud Networking Design and implement cloud networking architectures across AWS, Azure, and hybrid cloud environments. Implement cloud-native networking services, routing, segmentation, and security controls. Collaborate with cloud engineering teams to establish networking standards and governance. Support cloud migration and modernization initiatives. Leadership & Stakeholder Engagement Act as a trusted advisor to leadership, Enterprise Architecture, and Infra teams. Present architecture proposals, technical roadmaps, and risk assessments to technical and non-technical stakeholders. Translate complex concepts into business-focused outcomes. Participate in architecture review boards and strategic planning discussions. Mentor junior engineers and contribute to the development of technical standards and best practices. #LI-AD1 #LI-Hybrid ~IN1 Our company is built on helping individuals and families, and this starts with our employees. We want employees to maintain a positive balance, which is why we provide access to the benefits and resources they need to invest in themselves. From our onsite fitness facilities and generous paid time off to employee professional development programs, we are committed to helping employees live and work their best – both inside and outside the office. Unum is an equal opportunity employer, considering all qualified applicants and employees for hiring, placement, and advancement, without regard to a person's race, color, religion, national origin, age, genetic information, military status, gender, sexual orientation, gender identity or expression, disability, or protected veteran status. The base salary range for applicants for this position is listed below. Unless actual salary is indicated above in the job description, actual pay will be based on skill, geographical location and experience. $89,400.00-$183,500.00 Additionally, Unum offers a portfolio of benefits and rewards that are competitive and comprehensive including healthcare benefits (health, vision, dental), insurance benefits (short & long-term disability), performance-based incentive plans, paid time off, and a 401(k) retirement plan with an employer match up to 5% and an additional 4.5% contribution whether you contribute to the plan or not. All benefits are subject to the terms and conditions of individual Plans. Company: Unum Join our talent community to receive notifications about jobs relevant to your interest. Join our Talent Community! At Unum Group, we’re a Fortune 500 company and leading international provider of workplace benefits and services, helping workers and their families thrive for more than 175 years. Through our Unum and Colonial Life brands, our company offers disability, life, accident, critical illness, dental and vision insurance; leave and absence management support; and behavioral health services. Our 10,000+ employees work across operations in the US, UK and Poland, as well as our dedicated Technology Centre in Ireland. Unum Group is committed to working with and providing reasonable accommodations for any applicant with a disability. If you are disabled and need a reasonable accommodation to participate in the application or hiring process, please contact us by submitting a request here.