Network Security Engineer

Position Overview: The Network Security Engineer will be responsible for planning, deployment, and maintenance of network security equipment and solutions across on-premises, AWS, and Azure cloud infrastructures.

Work Schedule: This position is Monday-Friday. Team members are expected to be flexible with their schedule to support up to two after-hour planned maintenance windows per week.

The Network Security Engineer will work in a large infrastructure team and be required to support specific duties including, but not limited to:

• Designing, implementing, and supporting new network security solutions and/or improving the efficiency of current security measures.
• Installing, configuring, and supporting network security equipment, primarily Palo Alto firewalls.
• Managing network access control and dot1x authentication using Arista's AGNI platform.
• Configuring and supporting Infoblox for DHCP and IPAM.
• Implementing and managing Palo Alto's Prisma Access platform for zero trust network access.
• Utilizing Illumio for host-based network segmentation.
• Supporting modern switching and routing infrastructure; Arista and Cisco.
• Monitoring and troubleshooting network security performance.
• Testing the latest firmware releases before production installation.
• Automating routine tasks using Ansible Automation Platform and/or Terraform.
• Performing all other duties as assigned.

Required Skills and Qualifications:

• Excellent verbal and written communication skills.
• Ability to organize and facilitate planning and demonstrations.
• Ability to track, manage, and ensure project tasks are completed in a timely manner.
• Ability to prioritize multiple simultaneous projects.

Technical Knowledge:

• Strong foundation in networking fundamentals, including deep understanding of the TCP/IP protocol suite, OSI model, routing, switching, NAT, and firewall concepts.
• Hands-on experience with firewalls, including physical appliances and virtualized/cloud-based deployments in AWS and Azure. Comfortable with security policy configuration, troubleshooting, and integration with cloud-native services.
• Proficient with secure web gateways and proxy solutions, including policy management, traffic forwarding methods, and SSL inspection troubleshooting.
• Exposure to automation and infrastructure-as-code tools, with the ability to read and modify configurations written in JSON, YAML, and Terraform HCL.
• Working knowledge of automation frameworks and orchestration platforms such as Ansible Automation Platform and Terraform, including experience using them to standardize and streamline network operations.
• Familiarity with RESTful APIs, including basic scripting to interact with network devices and platforms for configuration retrieval, reporting, and provisioning tasks.
• Understanding of CI/CD pipelines and the DevOps lifecycle, with appreciation for how infrastructure and security policies integrate into modern deployment workflows.
• Experience with IP address management (IPAM) systems, including lifecycle management of IP space, DHCP/DNS integration, and subnetting best practices.
• Comfortable in command-line environments, with ability to analyze logs, debug connectivity issues, and interpret outputs from network monitoring or diagnostic tools (e.g., traceroute, tcpdump, Wireshark).
• Familiarity with Zero Trust architectures and cloud security models is a plus.

Preferred Experience Requirements:

• 4 years of experience preferred.
• Experience working in a complex data center environment.

Education Requirements:

• Bachelor’s Degree or equivalent work experience.

Who we Are

OneMain Financial (NYSE: OMF) is the leader in offering nonprime customers responsible access to credit and is dedicated to improving the financial well-being of hardworking Americans. Since 1912, we’ve looked beyond credit scores to help people get the money they need today and reach their goals for tomorrow. Our growing suite of personal loans, credit cards and other products help people borrow better and work toward a brighter future.

Driven collaborators and innovators, our team thrives on transformative digital thinking, customer-first energy and flexible work arrangements that grow lives, careers and our company. At every level, we’re committed to an inclusive culture, career development and impacting the communities where we live and work. Getting people to a better place has made us a better company for over a century. There’s never been a better time to shine with OneMain.

Because team members at their best means OneMain at our best, we provide opportu