Senior Network Infrastructure Engineer – F5 / NetScaler
About The Position
The Senior Network Infrastructure Engineer serves as a senior technical engineer supporting enterprise load balancing and DNS. The role leads the design, deployment, optimization, and troubleshooting of highly available infrastructure solutions, with a focus on F5 and Citrix NetScaler technologies. It supports Fiserv’s government programs and partners with infrastructure, application, security, and vendor teams to deliver secure, resilient, and scalable solutions in a regulated financial environment. The position requires in-person collaboration and follows a second-shift schedule. It requires use of a computer and audio equipment. Candidates must be U.S. citizens or U.S. permanent residents.
Requirements
- At least 8 years of experience in network, systems, infrastructure engineering, or a related field.
- At least 6 years of experience with Citrix NetScaler and/or F5 design, deployment, and support.
- At least 6 years of experience with technologies such as LTM, GTM, HA, GSLB, and content switching.
- At least 4 years of DNS experience, such as BlueCat, DNSSEC, and F5 XC.
- Experience troubleshooting complex financial, regulated, enterprise infrastructure environments.
- Bachelor’s degree in computer science, engineering, information technology, business, or a related field, or an equivalent combination of education, related experience, and/or military experience.
- U.S. citizenship or U.S. permanent resident (Green Card) status.
- Ability to work a second-shift schedule and collaborate in person.
Nice To Haves
- Experience with Python, Ansible, or other infrastructure automation tools.
- Experience with multi-factor authentication solutions.
- Experience supporting large-scale infrastructure migrations or modernization initiatives.
- F5 certifications such as F5-CTS or F5-CSE.
- Strong communication skills and experience working across technical teams, vendors, and business partners.
Responsibilities
- Design, deploy, and maintain critical local and global load balancing infrastructure using Citrix NetScaler and F5 solutions.
- Manage DNS infrastructure and configurations.
- Design and implement load-balanced application configurations.
- Provide technical leadership and design guidance to application teams.
- Troubleshoot complex infrastructure issues and drive problems through resolution.
- Lead platform upgrades, configuration changes, capacity planning, and performance optimization.
- Develop and maintain configurations for virtual servers, certificates, policies, and related services.
- Partner with application, infrastructure, security, OEM, and vendor teams on technical solutions.
- Develop technical standards, documentation, and implementation procedures.
- Identify opportunities to improve and automate infrastructure processes using tools such as Python and Ansible.
- Provide technical guidance and knowledge sharing across engineering teams.
Benefits
- Annual incentive opportunity for eligible associates, potentially delivered as a mix of cash bonus and equity awards at the company’s discretion.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
