Senior Software Engineer — Service Observability & Detection

About the job

Imagine what you could do here. At Apple, new ideas have a way of becoming extraordinary products, services, and customer experiences very quickly. Apple Pay and Wallet are at the heart of how millions of people around the world make payments, store credentials, and interact with commerce every day. Behind every tap, every transaction, and every boarding pass is a set of systems that must be fast, reliable, and secure at massive scale. We are looking for a Senior Software Engineer to join the Service Observability & Detection team within Wallet, Payments, and Commerce (WPC). In this role, you will design and build the telemetry foundations, SLO frameworks, and detection systems that give engineering and operations teams deep, real-time visibility into the health of services that hundreds of millions of people depend on every day. You will define what "good" looks like for telemetry at scale — and build systems that ensure we detect failures before our customers do.

Description

Apple Pay processes billions of transactions across millions of merchants worldwide. The systems behind Apple Pay, Apple Wallet, Apple Cash, Tap to Pay, and our commerce platforms must meet the highest standards for availability, latency, security, and correctness — with zero tolerance for downtime or data loss. Our team owns the observability and detection layer across all WPC services. We don't just consume telemetry — we define the telemetry strategy, build the instrumentation standards, and design the SLO and alerting architectures that turn raw signals into actionable detection. We work at the intersection of platform engineering, reliability, and operations — building systems that scale across hundreds of services, thousands of APIs, and billions of transactions. This is a senior engineering role within one of Apple's most critical and high-scale service organizations. You will work cross-functionally with multiple product and engineering teams — partnering directly with offering owners, platform teams, and operations — to build observability and detection systems that the entire organization depends on. You will lead by influence, drive adoption across teams you don't manage, and set the telemetry and reliability standards that shape how WPC builds, monitors, and operates services at scale.