Senior Site Reliability Engineer (Mobile)

PayPal • San Jose, CA

71d • $123,500 - $212,850 • Hybrid

About The Position

We are building a new Mobile SRE team focused on ensuring the reliability, availability, and performance of our iOS and Android applications. While our existing SRE organization focuses on backend and web services, this new team will bridge the gap between mobile clients and backend systems, ensuring a seamless end-to-end experience for our customers. As a Senior Mobile SRE, you will be a hands-on engineer responsible for implementing reliability standards, building automation, and driving operational excellence within the mobile engineering organization. You will work closely with the Staff Mobile SRE and partner teams to execute on the vision and help mobile engineers adopt a stronger culture of reliability and performance.

Requirements

• Minimum of 5 years of relevant work experience and a Bachelor's degree or equivalent experience.
• 6+ years of experience in software engineering, SRE, or mobile development roles.
• Strong understanding of iOS and/or Android development and performance profiling.
• Hands-on experience with observability platforms (e.g., Datadog, Firebase Crashlytics, Sentry).
• Experience building automation, scripts, or tools for reliability (Python, Go, or similar).
• Working knowledge of Swift/Kotlin for instrumentation in mobile apps.
• Strong problem-solving and debugging skills, especially in cross-system issues.
• Experience in incident response and root cause analysis.

Nice To Haves

• Familiarity with CI/CD for mobile (Harness, Fastlane, Jenkins).
• Knowledge of Gradle and Bazel build systems.
• Previous exposure to setting up on-call models or alerting frameworks.
• Experience collaborating in a distributed, global engineering team.

Responsibilities

• Delivers complete solutions spanning all phases of the Software Development Lifecycle (SDLC) (design, implementation, testing, delivery and operations), based on definitions from more senior roles.
• Advises immediate management on project-level issues.
• Guides junior engineers.
• Operates with little day-to-day supervision, making technical decisions based on knowledge of internal conventions and industry best practices.
• Applies knowledge of technical best practices in making decisions.
• Implement mobile-specific SLIs and SLOs (e.g., crash-free sessions, ANRs, app startup time, network success rates).
• Build and maintain Datadog dashboards, alerts, and playbooks for mobile services.
• Ensure instrumentation in mobile apps produces actionable telemetry.
• Develop automation and tools under the guidance of the Staff SRE, including crash/ANR triage workflows, automated regression detection for performance and reliability, and dashboards and bots to surface release health.
• Participate in on-call rotations for mobile incidents.
• Drive root cause analysis, document lessons learned, and contribute to blameless postmortems.
• Collaborate with backend SREs and service owners on cross-system issues.
• Partner with mobile developers to embed reliability practices into development and testing.
• Provide guidance on instrumentation, monitoring, and alerting best practices.
• Advocate for operational readiness of features before release.
• Identify areas of operational toil and automate repetitive tasks.
• Contribute to the evolution of reliability processes and tooling across mobile teams.

Benefits

• Flexible work environment.
• Employee shares options.
• Health and life insurance.
• Annual performance bonus (or other incentive compensation, as applicable).
• Equity.
• Medical, dental, vision, and other benefits.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Industry: Credit Intermediation and Related Activities
• Education Level: Bachelor's degree
• Number of Employees: 5,001-10,000 employees