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Fiserv

Senior Network Infrastructure Engineer – F5, NetScaler

Fiserv

. Design, deploy, and maintain critical local and global load balancing infrastructure using Citrix NetScaler and F5 solutions .

Posted 11/5/2026full-timeUnited StatesSenior💰 $128,000 - $216,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates extensive experience in designing, deploying, and maintaining load balancing infrastructure using Citrix NetScaler and F5 solutions, alongside strong capabilities in DNS management and infrastructure automation with Python and Ansible. Proven ability to troubleshoot complex issues in regulated financial environments while providing technical leadership and documentation.

Highest-signal resume keywords
Citrix NetScaler DesignF5 Load Balancing SolutionsDNS ManagementInfrastructure Automation with PythonTechnical Leadership

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Load Balancing InfrastructureDNS ConfigurationApplication Configuration DesignTroubleshooting Complex InfrastructureCapacity PlanningPerformance OptimizationEncryption TechnologiesInfrastructure Migration SupportMulti-Factor Authentication SolutionsTechnical Documentation
Soft Skills
Strong Communication SkillsKnowledge Sharing
Tools & Technologies
Citrix NetScalerF5 SolutionsPythonAnsibleBluecatDNSSECF5 XC
Certifications & Qualifications
F5-CTSF5-CSE
Industry Keywords
Regulated Financial EnvironmentEnterprise Infrastructure

Tech Stack

Tools & technologies
AnsibleCitrixDNSPythonSwitching

About the role

Key responsibilities & impact
  • 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 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
  • Apply encryption technologies 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 Python and Ansible
  • Provide technical guidance and knowledge sharing across engineering teams

Requirements

What you’ll need
  • 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 LTM, GTM, HA, GSLB, and ad content switching
  • 4+ years of DNS experience, including 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 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
  • Must possess U.S. Citizenship or U.S. Permanent Resident (Green Card) status
  • Ability to work a second-shift schedule
  • Ability to use a computer and audio equipment

Benefits

Comp & perks
  • Annual incentive opportunity for incentive-eligible associates, potentially delivered as a mix of cash bonus and equity awards
  • Second-shift schedule