Senior Application Analyst - Mainframe

Greenwood Village, Colorado, USFull-time$90k–$158k2026-10-26 → 2026-11-10

No visa sponsorshipCitizens or permanent residents only

Core

Modify, test, support, and optimize enterprise mainframe applications (COBOL, JCL, DB2, CICS) to ensure system reliability and performance in a production environment.

Role type

Senior IC mainframe application analyst

Builds

Core financial services platforms for financial institutions, corporations, merchants, and consumers

Domain

Fintech / Payments / Mainframe

Required skills

COBOL, JCL, DB2, CICS, IBM z/OS, performance tuning, root cause analysis, technical documentation

Preferred skills

DB2 utilities (IDCAMs, SyncSort, File-Master), REXX, Endevor, Clarity, Jira, FTP/NDM

Technologies

IBM z/OS, COBOL, JCL, DB2, CICS, REXX, Endevor, Clarity, Jira, SyncSort, IDCAMS

Responsibilities

Modify and test mainframe applications; Code and test high-priority changes; Perform performance tuning; Troubleshoot production issues; Create and maintain technical documentation; Provide status updates to stakeholders

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