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Closed listing

Fiserv

Senior Network Infrastructure Engineer – F5 / NetScaler

Alpharetta, GA, United States
Marietta, GA, United States

$109,000.00 - $182,400.00

This opening has closed.

The original listing is kept below for reference.

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Job details

Pay: $109,000.00 - $182,400.00
Posting language: English
Posted: Oct 29, 2026

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Original job description

Archived listing. The details below describe a past opening.

Calling all innovators – find your future at Fiserv.

We’re Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day – quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we’re involved. If you want to make an impact on a global scale, come make a difference at Fiserv.

Job Title

Senior Network Infrastructure Engineer – F5 / NetScaler

About your role

You will serve as a senior technical engineer supporting enterprise load balancing and DNS. You will lead the design, deployment, optimization, and troubleshooting of highly available infrastructure solutions, with a strong focus on F5 and Citrix NetScaler technologies. You will support Fiserv’s government programs, partnering with infrastructure, application, security, and vendor teams to deliver secure, resilient, and scalable solutions.

What you’ll do

Design, deploy, and maintain a 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 for 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
Understand encryption technologies commonly used by web applications, DNS, and load balancing
Partner with application, infrastructure, security, OEM, and vendor teams on technical solutions
Operate in a regulated, controlled financial environment.
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

Experience you’ll need to have

8+ years of experience in network, systems, infrastructure engineering, or a related field
6+ years of experience with Citrix NetScaler and/or F5 design, deployment, and support
6+ years of experience with technologies such as LTM, GTM, HA, GSLB, ad content switching.
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

Experience that would be great to have

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

Important information about this role

This position requires in-person collaboration
Must possess U.S. Citizenship or U.S. Permanent Resident (Green Card) status
This position will work a second-shift schedule

How you’ll work

This role requires the use of a computer and audio equipment

#Hiring #NetworkEngineering #F5 #F5BIGIP #NetScaler #LoadBalancing #InfrastructureEngineering #CloudInfrastructure #TechJobs #L1-CD1

Salary Range

$109,000.00 - $182,400.00

These pay ranges apply to employees in Colorado, Hawaii, Illinois, Nevada, Rhode Island, Vermont and Washington. Pay ranges for employees in other states may differ.

For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company’s sole discretion.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

Thank you for considering employment with Fiserv. Please:

Apply using your legal name
Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Equal Opportunity:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.

If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact AskHR.US@fiserv.com . Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv’s Disability Accommodation Policy for additional information.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

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