Sr Software Engineer, Customer Systems

Socket.dev; Cupertino (CA); On-site; USD 190,000 - 230,000; Full time

Job summary

Apple's Information Systems and Technology (IS&T) is seeking a backend software engineer to design and ship high-scale services for customer systems. You will work with Java, Spring, and modern JVM technologies to build reliable, low-latency microservices that power Apple's support platforms and experiences.

Join a team that handles billions of transactions and operates globally. Expect rigorous performance tuning, memory management, and secure cloud-based architectures, with opportunities

Qualifications

• B.S. in Computer Science, Computer Engineering, or related field or equivalent experience.
• 5+ years in software development; longer is a plus.
• Proficiency in Java, concurrency, memory management, and performance optimization.
• Strong OOP, data structures, algorithms and GoF design patterns; backend focus.
• Experience with Spring ecosystem and microservices patterns.
• Deep understanding of JVM internals and distributed cloud-based systems.
• Knowledge of HTTP/HTTPS, TCP/IP, CDNs, load balancing and Zero Trust.

Responsibilities

• Design, implement, and ship high-scale, low-latency backend services.
• Build production applications with Spring-based microservices and WebFlux.
• Ensure security, reliability, and fault-tolerance in distributed systems.

Skills

Java

OOP

Distributed systems

Concurrency

Memory management

High scale

Cloud architectures

Networking fundamentals

Education

B.S. in Computer Science or related

Tools

Spring Boot

Spring MVC

Spring Security

Spring Data

Spring Cloud

WebFlux

Job description

Do you want to help build some of the largest and most consequential enterprise and customer technology systems in the world? Join Apple’s Information Systems and Technology (IS&T) organization. IS&T is the engine behind everything Apple does for customers and for the people who build for them. It’s Apple’s central nervous system. Supporting 2.5 billion active Apple devices, processing billions of secure transactions, and keeping the technology that defines modern life running flawlessly, IS&T makes the impossible feel effortless.

Description

Customer Systems is part of IS&T and drives the technology behind Apple's customer support experience — from contact center operations to the software powering the iconic Genius Bar. The team also builds and operates AppleCare's online support platform, which handles 6 billion visits per year, delivering seamless, high-quality support to Apple customers around the globe. Design and build microservices powering low-latency, high-throughput customer experiences — serving over a million users daily across Apple Support websites, iOS apps, and phone-based frontends.

Minimum Qualifications

• B.S. in Computer Science, Computer Engineering, or a related technical field, or equivalent professional work experience.
• 5+ years proven experience developing software in a professional capacity. Longer experience preferred.
• 2+ years proven experience with Java, including proficiency in concurrency, memory management, and performance optimization techniques.
• Proficiency in OOP principles, data structures, algorithms, and software design patterns (e.g. GoF), with a proven focus on implementing testable, maintainable, and extensible backend code.
• Experience building production applications with the Spring ecosystem (e.g. Spring Boot, Spring MVC, Spring Security, Spring Data, Spring Cloud, etc.), including proficiency in dependency injection, auto-configuration, reactive programming with WebFlux, and designing microservices using Spring-based patterns.
• Solid understanding of advanced JVM internals (e.g. garbage collection, memory allocation, JIT, JNI, etc.).
• Experience designing, implementing, and shipping high-scale, high-performance, highly available, fault-tolerant, and secure cloud-based distributed systems.
• Solid knowledge of networking concepts, protocols, and infrastructure (e.g. HTTP/HTTPS, TCP/IP, CDN, load balancing, edge computing, DNS, Zero Trust architecture, etc.).

Preferred Qualifications

• Track record of leading software projects within a team as a tech lead (TL), while mentoring software engineers.
• Hands‑on experience leveraging GenAI coding tools (e.g., Claude, Copilot, Codex) to accelerate the software development lifecycle, enhance code quality, and streamline debugging and testing processes.
• Experience with complementary programming languages beyond Java (e.g. Go, Python, Ruby, etc.), including practical use for automation scripting, infrastructure tooling, data processing pipelines, and build system customizations.
• Experience in API design and implementation, including proficiency in RESTful API principles, gRPC, GraphQL, contract‑first design (e.g. OpenAPI/Swagger, Protobuf, etc.), API versioning strategies, gateway patterns, rate limiting, and designing APIs for backward compatibility and long-term evolution.
• Experience with caching strategies and in-memory data technologies (e.g. Redis, Memcached, Hazelcast, Ehcache, etc.), including proficiency in cache invalidation patterns, distributed caching architectures, and session management for high-throughput applications.