Principal Software Engineer – Performance Engineering

As a Principal Software Engineer at JPMorganChase within the Commercial and Investment Bank Payment Performance Engineering team, you will serve as the technical authority and execution lead for performance engineering across our platforms. You will be hands-on and strategic—defining non-functional requirements (NFRs) and service level objectives (SLOs), embedding performance into CI/CD, scaling automated performance testing, and driving resiliency, capacity, and user experience outcomes across distributed systems. You will set the bar for performance-first design, partner closely with architecture, SRE, and application teams, and ensure performance risks are identified and eliminated before production. Responsibilities include defining NFRs/SLOs (p95/p99 latency, throughput, ramp profiles, error budgets), proactive bottleneck detection, architectural guidance, capacity modeling, serving as final technical authority for performance sign-offs, building automated test suites for load/stress/soak/ccapacity scenarios, virtualization of dependencies, expanding automated performance test execution, dashboards/alerts linked to production telemetry, reporting on SLO variance, embedding performance gates into CI/CD, leading chaos and resiliency experiments, and applying AI/LLMs to workload generation and automated reporting.