Senior Site Reliability Engineer 's reason Fiserv · Sunnyvale · Site Reliability –ago

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.

Senior Site Reliability Engineer

You will join our global team in Sunnyvale and help operate financial platforms  will partner with cross-functional teams to improve reliability, automate operations, and drive continuous improvement across our cloud-native environments.

• 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.

• Solid practical experience in site reliability, operations or Dev Ops 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 Git Hub and Git Hub Actions for code management, automation and IaC pipelines.

• Strong troubleshooting skills, a pragmatic problem-solving approach and effective communication for cross-team collaboration.

• 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.

$ - $

These pay ranges apply to employees in Sunnyvale, California. 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.

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  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.