Senior Site Reliability Engineer

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Were 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 were involved. If you want to make an impact on a global scale come make a difference at Fiserv.

Job Title

About your role:

We are seeking a highly skilled and experiencedSenior Performance & Site Reliability Engineerto join our team and take a leadership role in ensuring the performance reliability and scalability of our production systems. This role is ideal for a seasoned professional who thrives in dynamic environments possesses deep technical expertise across multiple layers of the stack and is passionate about delivering exceptional client experiences through robust and high-performing systems.

This hybrid position combines the disciplines of performance engineering and site reliability engineering with a strong focus on production environments. The successful candidate will proactively identify and resolve performance bottlenecks recommend and implement system optimizations and lead incident response efforts with speed and precision. Additionally this role will be instrumental in evaluating infrastructure readiness during client onboarding and forecasting capacity needs to support future growth.

What youll do:

Production Performance Optimization

• Conduct comprehensive performance assessments of production systems identifying inefficiencies across application code JVM configurations database queries and infrastructure components
• SQL query optimization and strategic indexing to enhance database responsiveness; JVM memory tuning to reduce garbage collection overhead & improve application stability and application-level enhancements to support scalability & reduce latency
• Collaborate with development QA and infrastructure teams to ensure performance improvements are effectively integrated into deployment pipelines and release cycles

Monitoring Observability & Diagnostics

• Utilize a robust suite of observability and diagnostic tools to monitor system health detect anomalies and perform deep root cause analysis: Splunk Dynatrace Extrahop Foglight and Wireshark
• Develop and maintain advanced dashboards alerts and automated reporting mechanisms to ensure proactive detection and resolution of performance issues.

Client Onboarding & Infrastructure Planning

• Participate in client onboarding processes by reviewing anticipated usage patterns and evaluating the impact on existing infrastructure; perform capacity planning and forecasting to ensure infrastructure readiness and scalability in alignment with client growth and business objectives
• Collaborate with infrastructure and operations teams to provision new hardware optimize resource allocation and maintain high availability and performance standards
  

Incident Response & Reliability Engineering

• Act as a senior technical lead during production incidents driving rapid triage root cause identification and resolution efforts; lead post-incident analysis to identify systemic issues and implement long-term solutions that enhance system resilience and prevent recurrence

Experience youll need to have:

• 7 years of hands-on experience in performance engineering site reliability engineering or a closely related technical discipline
• Advanced proficiency in SQL and database performance tuning (e.g. Oracle PostgreSQL MySQL)
• Deep understanding of JVM internals memory management and garbage collection strategies
• Strong programming skills in Java and scripting languages such as Python or Bash
• Familiarity with cloud platforms (AWS Azure GCP) and container orchestration technologies (e.g. Kubernetes Docker)
• Demonstrated experience withSplunkDynatraceExtrahopFoglight andWiresharkin production environments
• Exceptional analytical problem-solving communication and collaboration skills with the ability to work effectively across cross-functional teams
• Bachelors degree in computer science Engineering or related field

Experience that would be great to have:

• Experience in infrastructure capacity planning and forecasting
• Background in incident management postmortem analysis and continuous improvement initiatives
• Relevant certifications in cloud technologies performance engineering or SRE practices (e.g. Google SRE AWS Certified Solutions Architect)

How youll work:

• Fiserv emphasizes in-person collaboration to help you grow your career while shaping the future of fintech; this role is on-site Monday through Friday

Sponsorship:

• You must currently possess valid and unrestricted U.S. work authorization to be considered for this role. Individuals with temporary visas including but not limited to F-1 (OPT CPT STEM) H-1B H-2 or TN or any candidate requiring sponsorship now or in the future will not be considered for this role

This role is not eligible to be performed in Colorado California District of Columbia Hawaii Illinois Maryland Minnesota New Jersey New York Nevada Rhode Island or Washington.

It is unlawful to discriminate against a prospective employee due to the individuals status as a veteran.

Please note that salary ranges provided for this role on external job boards are salary estimates made by outside parties and may not be accurate.

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. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiservs Disability Accommodation Policy for additional information.

Note to agencies:

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

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