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Fiserv

Mainframe Software Development Engineer

Fiserv

Mainframe Software Development Engineer at Fiserv, leading design and development of critical applications. Collaborating with cross-functional teams to meet business goals in the fintech sector.

Posted 7/6/2026full-timeBerkeley Heights • New Jersey • 🇺🇸 United StatesMid-LevelSenior💰 $128,000 - $216,000 per yearWebsite

About the role

Key responsibilities & impact
  • Lead the design, development and implementation of mainframe software applications that support business goals and client needs
  • Collaborate with architects, team leads, business analysts and cross-functional partners to gather requirements, translate them into technical specifications and validate design understanding
  • Develop, code, test and debug applications that meet design and architectural requirements, support system testing and ensure reliable performance
  • Enhance and maintain existing application software, assess the impact of changes across the application, lead peer reviews and provide ongoing support for internally developed applications
  • Communicate development status regularly, mentor junior developers and assist the production support team with defect analysis

Requirements

What you’ll need
  • 5+ years of experience with COBOL, DB2, BMS Maps, VSAM, JCL and IBM Utilities
  • 5+ years of experience with IBM Mainframes and the TSO/ISPF development environment
  • 5+ years of experience with Endevor or a similar source control application
  • 5+ years of experience in software design principles and software architecture

Benefits

Comp & perks
  • Competitive salary
  • Annual incentive opportunity which may be a mix of cash bonus and equity awards
  • Equal Opportunity Employer with a commitment to inclusivity

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
BMS MapsVSAMJCLIBM UtilitiesSoftware ArchitectureApplication DevelopmentSystem TestingDebuggingPeer ReviewsDefect Analysis
Soft Skills
CollaborationMentoringCommunication