Sr. Support & Post-Release Quality Engineer at Fiserv in Berkeley Heights, NJ

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 Sr. Support & Post-Release Quality Engineer About Your Role As a Sr. Support & Post-Release Quality Engineer , you will bridge the gap between production engineering, product support, and release quality. You will be a critical technical line of defense responsible for maintaining the health, stability, and performance of our suite of cutting-edge back-of-house web applications, point-of-sale APIs, and Android client applications across millions of live merchant devices. In this hybrid role, you will own post-release defect triage, root-cause analysis (RCA), and field issue reproduction , while proactively driving manual, automated, performance, and load testing. You will collaborate daily with Cloud Engineers, Android Developers, Product Owners, and Site Reliability Engineers to investigate complex production edge cases, build diagnostic tooling, and ensure sub-second reliability for our global platform. What You Will Do Post-Release Defect Triage & RCA: Serve as the primary technical point of contact for Product Support and Technical Success teams to investigate, reproduce, and isolate root causes for complex production issues reported from the field. Full-Spectrum QA Testing: Design, execute, and maintain manual, automated, regression, and post-release validation test suites across Android native client applications, web dashboards, and point-of-sale REST APIs. Performance & Load Testing: Perform load, stress, and performance testing on web services, cloud infrastructure, and mobile endpoints to identify latency bottlenecks before and after production deployments. Proactive System Observability: Monitor observability tools ( Sentry, New Relic, Splunk, Datadog ) to identify error trends, memory leaks, and performance anomalies in production before customers report them. Tooling & Diagnostic Automation: Build custom internal scripts, diagnostic utilities, and automation tools for yourself and support teams to streamline log extraction, issue reproduction, and field remediation. Bug Story Documentation: Write detailed, technical bug reports and documentation—including step-by-step reproduction scripts, log extracts, and root-cause analysis findings—to unblock core engineering teams. Incident Management: Participate in after-hours incident management as part of an on-call rotation to resolve high-severity production outages or critical regressions. Cross-Functional Collaboration: Partner closely with Product Managers, Android Engineers, Cloud/SRE teams, and Release Management to keep technical information flowing and advocate for quality improvements in product backlogs. What You Will Need to Have Seniority & Experience: 5+ years of professional experience in Software QA Engineering, Technical Support Engineering, Systems Debugging, or SDET roles. Operating Systems (Linux & Android): Deep hands-on proficiency with Linux/UNIX operating systems , terminal command-line tools, and Android OS debugging (adb, Logcat analysis, device flashing). QA & Automation Mastery: Proven track record in manual and automated software testing (UI and API automation) across web and mobile platforms. Performance & Load Testing: Hands-on experience executing load and performance tests using tools such as JMeter, Gatling, Locust, or Postman/Newman. Programming & Scripting: Strong scripting skills in Python, Bash, JavaScript, or Shell , with working knowledge of object-oriented languages ( Java, Kotlin, or Ruby ) to analyze code and write