InterSystems IRIS Developer

Calling all innovators - find your future at Fiserv.

We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.

Job Title

InterSystems IRIS Developer

What does a successful InterSystems IRIS Developer do at Fiserv? A successful InterSystems IRIS Developer at Fiserv leads the design, development, modernization, and support of business-critical platforms built on InterSystems Cache and InterSystems IRIS. We translate product needs into scalable technical solutions, strengthen engineering practices, and partner across teams to deliver secure, reliable, and high-performing applications. We also mentor developers, improve operational resilience, and help drive continuous modernization in a regulated fintech environment.

What you will do?

• Lead solution design and end-to-end delivery for applications built on InterSystems Cache and InterSystems IRIS, translating product requirements into technical designs while identifying dependencies, tradeoffs, risks, and phased delivery plans. • Design, develop, test, debug, and document ObjectScript-based services, APIs, batch processes, and data workflows, while driving code quality through coding standards, code reviews, pairing, and automated checks. • Optimize data-centric applications by modeling and tuning IRIS/Cache data structures, SQL access, persistent classes, queries, and application logic for performance, scalability, and reliability. • Lead modernization and integration efforts, including legacy component upgrades and migrations such as Cache to IRIS, while maintaining backward compatibility and implementing REST APIs, messaging, and file or batch integration patterns. • Support operational excellence by troubleshooting incidents, performing root-cause analysis, implementing preventive improvements, embedding secure software development practices, partnering with security and risk teams, and mentoring engineers across engineering, QA, architecture, architecture, infrastructure, and product teams.

What you must have?

• 7+ years of software engineering experience, including technical leadership for enterprise systems with ownership of design, mentoring, and delivery accountability. • 5+ years of hands-on experience with InterSystems Cache and/or InterSystems IRIS, including strong ObjectScript development and support expertise. • 3+ years of experience building and supporting high-performance, data-centric applications with SQL, indexing, query optimization, performance tuning, and operational readiness in IRIS/Cache environments. • 2+ years of Agile delivery experience using Scrum or Kanban, including story refinement, estimation, sprint planning, demos, retrospectives, and participation in production support or incident response.