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

Site Reliability Engineer

We are seeking a mid-to-senior Site Reliability Engineer to join our global team in Nenagh and help operate financial platforms at scale. You will partner with cross-functional teams to improve reliability, automate operations, and drive continuous improvement across our cloud-native environments.

What you’ll do

• Design, build and maintain automation to eliminate manual, repetitive operational tasks (runbooks, deployment pipelines, remediation scripts).
• Operate and enhance monitoring, logging and alerting systems to ensure strong observability across services.
• Participate in on-call rotations and lead incident response activities; run and document post-incident RCA and follow-up actions.
• Collaborate with stakeholders to define SLIs and SLOs, manage error budgets and translate reliability goals into measurable actions.
• Forecast capacity needs and contribute to resource planning to ensure performance and cost-efficiency.
• Troubleshoot production issues: deep-dive analysis, isolate root causes and implement durable fixes.
• Drive continuous improvement and platform hardening through runbook improvements, automation, and best-practice adoption.
• Work closely as part of an international team to deliver project outcomes and operational excellence.

What we expect you to bring (essential)

• Solid practical experience in site reliability, operations or DevOps at a mid-to-senior level.
• Strong shell scripting skills and a foundation in programming concepts.
• Hands-on experience with cloud workloads—specifically Google Cloud Platform (GCP) and GKE.
• Proven experience with containerisation and orchestration (Kubernetes).
• Working knowledge of Infrastructure as Code and configuration management (Terraform, Ansible, Puppet).
• Familiarity with monitoring and observability tooling such as Prometheus, Grafana and Datadog.
• In-depth understanding of HTTP(s) traffic, routing and load-balancing, with practical experience observing and operating HAProxy.
• Comfortable using GitHub and GitHub Actions for code management, automation and IaC pipelines.
• Strong troubleshooting skills, a pragmatic problem-solving approach and effective communication for cross-team collaboration.

Nice to have

• Experience programming in Python, Go or Java.
• Exposure to large-scale financial services platforms or highly regulated environments.
• Experience defining SLIs/SLOs and managing error budgets in production environments.

Why join us

• Join a global team operating mission-critical financial platforms at scale.
• Opportunity to shape reliability practices, automation and observability across cloud-native systems.
• Collaborative environment where we work together to reduce risk and deliver dependable services.

Location

• Nenagh (local office) — this role supports a global operations team.

How we hire

• We evaluate candidates on technical experience, problem-solving and the ability to collaborate in an international team. Successful candidates will demonstrate practical SRE skills, sound judgment in incident response, and a track record of driving automation and reliability improvements.

If you’re excited to help operate and evolve cloud-native financial platforms, we’d like to hear from you.

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 Diversity and Inclusion:

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.

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.