Senior Network Infrastructure Engineer – F5 / NetScaler

Greenwood Village, Colorado, USFull-time$109k–$182k2026-10-29 → 2026-11-10

On-siteCitizens or permanent residents only

Core

Senior engineer designing, deploying, and maintaining enterprise load balancing and DNS infrastructure using F5 and Citrix NetScaler for a global financial services firm.

Role type

Senior IC network infrastructure engineer (F5/NetScaler)

Builds

Highly available load balancing and DNS infrastructure for financial transactions

Domain

Fintech / Payments / Network Infrastructure

Required skills

F5 BIG-IP, Citrix NetScaler, DNS (Bluecat, DNSSEC), LTM, GTM, HA, GSLB, content switching, Python, Ansible, encryption technologies, capacity planning, technical leadership

Preferred skills

Multi-factor authentication, large-scale infrastructure migrations, F5 certifications (F5-CTS, F5-CSE)

Technologies

F5 BIG-IP, Citrix NetScaler, Bluecat, Python, Ansible

Responsibilities

Design and deploy local and global load balancing infrastructure; Manage DNS infrastructure and configurations; Troubleshoot complex infrastructure issues; Lead platform upgrades and capacity planning; Develop technical standards and documentation; Automate infrastructure processes using Python and Ansible

Seniority

Senior, hands-on IC

About Fiserv

Fiserv is looking for an experienced Product Manager Advisor II – Open Banking, whose primary responsibility will be executing on the go-to-market of digital integrations with an Open API platform, API/APP marketplace and developer portal ecosystems to co-innovate with Fintechs, Financial institutions, prospects and key internal stakeholders to create value for our clients. This role is a hybrid between digital integrations platforms, marketplace technology, open APIs, Agentic AI and product. You will be part of a team working at the intersection of traditional finance and the disruptive world