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Added 1 min ago
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InterSystems IRIS Developer
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A successful InterSystems IRIS Developer at Fiserv leads the design, development, modernization, and support of business-critical platforms built on InterSystems Cache and InterSystems…
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Fiserv

InterSystems IRIS Developer

Milwaukee, WI, United States

$90,000.00 - $158,400.00

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Job details

Pay: $90,000.00 - $158,400.00
Posting language: English
Posted: Jun 27, 2026

Original job description

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.

What would be nice to have?

3+ years of experience with IRIS/Cache administration or close operational partnership, including installations, upgrades, backup and restore, monitoring, and high availability concepts such as mirroring or failover.
2+ years of experience with interoperability and engineering enablement, including REST/JSON APIs, messaging, ETL pipelines, batch or file interfaces, CI/CD pipelines, automated testing, and Git-based workflows.
1+ year of experience in regulated environments such as financial services, along with Linux/Unix scripting and InterSystems certifications in IRIS, Cache, HealthShare, or Ensemble.

This job description is intended to describe the general nature and level of work being performed and is not an exhaustive list of all responsibilities, duties, and skills required.

Salary Range

$90,000.00 - $158,400.00

These pay ranges apply to employees in New Jersey and New York. Pay ranges for employees in other states may differ.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

For incentive eligible associates, the successful candidate is eligible for an annual incentive opportunity which may be delivered as a mix of cash bonus and equity awards in the Company’s sole discretion.

Thank you for considering employment with Fiserv. Please:

Apply using your legal name
Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Equal Opportunity:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.

If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact AskHR.US@fiserv.com . Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv’s Disability Accommodation Policy for additional information.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

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More about this job

Skills

IRIS
Product comprehension
SQL
API development
Troubleshooting
Root cause analysis
Software development
Coaching
Leadership
Agile
Scrum
Kanban
Estimating
Incident response
Data engineering
CI/CD
Test automation
Git
Linux
UNIX

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