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Salary
≈ $64k – $132k per year (Estimated)
Location
In office (United Kingdom)
Seniority
Staff · 5+ years exp

Confirmed on the employer's own hiring board on Oct 26, 2026. First seen by Alion on Oct 8, 2026.

Overview
Company
Impact
Profile match
Infinite Computer Solutions is a global leader in digital engineering and IT services with over 20 years of delivering AI‑enabled transformation, quality engineering, cybersecurity, and industry‑specific solutions for healthcare, finance, government, insurance and more.
Software Developer (Mainframe)

Job Description

What does a successful Software Development Engineer do at Fiserv?

The Software Development Engineer will serve as a technical leader in our Mainframe Software Engineering Department and play a key role in developing industry leading software for our customers. They will be responsible for developing, testing, and supporting complex technical and architectural solutions that support the Digital Banking division payment processing platform. We develop new features for the DPS product strategies and address the market needs of Fiserv clients and their customers in an Agile environment.

What you will do:

  • Work with Solution Architect and scrum team to ensure application code algins with the application architecture.
  • Adhere to platform architecture and best practices.
  • Participate in daily/weekly stand ups, code reviews, and QA walkthroughs.
  • Work with scrum team in developing the sprint plan.
  • Complete assigned tasks within the sprint timeline and with high quality
  • You will develop a deep understanding of appropriate data & software components including conceptual data models, data flows, entity relationships, specifications, audit controls, exception and error handling, security, etc.
  • Support technical design decisions through validation of technical approaches and prototyping of new concepts.
  • Identify and implement continuous improvements to the development practice
  • Understand the existing processing architecture and adhere to design and technical solutions for the new projects.
  • Coordinate and work with offshore team, as needed, for deliverables which could include peer code review, proper documentation, and installation.
  • Ability to provide 24x7 on-call support on a rotation assignment
What you will need to have:
  • Bachelor’s Degree or a minimum of 5 years of experience demonstrating required skills and competencies.
  • 5+ years’ experience designing and developing secure mainframe-based applications.
  • 5+ years’ experience with COBOL, JCL, CICS, MQ and Db2 for z/OS. Nice to have REXX
  • Work with scrum team in developing the sprint plan.
  • Complete assigned tasks within the sprint timeline and with high quality
  • Ability to provide 24x7 on-call support on a rotational assignment.
  • Strong client-facing skills and experience
  • 3 - 10 years of experience designing, developing, and implementing software applications and hands on experience with large scale applications at large institutions.

What would be great to have:

  • Experience in Agile Software Development methodologies including Scrum.
  • Can-do attitude with a delivery focus.
  • Understanding of the Payment Industry and associated products
  • Knowledge of Test-Driven Development (TDD)
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