Senior Backend Engineer, High-Scale Customer Systems

Apple, Inc.; Sunnyvale (CA); On-site; USD 150,000 - 278,000; Full time

Benefits offered by this job

Employee stock programs

Discretionary bonuses or relocation

Medical and dental coverage

Retirement benefits

Education expense reimbursement

Job summary

Apple is seeking a software engineer to join IS&T Customer Systems in Sunnyvale, CA. You will own end-to-end delivery of features for high-scale customer experiences, from design through testing, deployment, and production observability.

The role emphasizes Spring-based backend development, JVM tuning, API design, and resilient microservices. 5+ years of experience in Java and cloud distributed systems are essential; BS in CS or related field is required.

Qualifications

• B.S. in Computer Science, Computer Engineering, or related field or equivalent experience.
• 5+ years of professional software development experience.
• 2+ years of Java experience with concurrency, memory management, and performance optimization.
• Proficiency in OOP, data structures, algorithms, and GoF design patterns.
• Experience with Spring ecosystem (Spring Boot, Spring MVC, Spring Security, Spring Data, Spring Cloud) including reactive programming with WebFlux and microservices patterns.
• Solid understanding of JVM internals (GC, memory allocation, JIT).
• Experience designing, implementing, and shipping distributed cloud-based systems.
• Strong knowledge of networking concepts and infrastructure.

Responsibilities

• Own end-to-end delivery of features from design to production observability.
• Drive engineering best practices: code reviews, testing, CI/CD improvements, documentation.
• Architect non-blocking, event-driven service pipelines for millions of concurrent requests.
• Contribute to API design and contract-first development for clean cross-boundary integration.

Skills

Java

Spring Framework

OOP

Data structures

System design

Concurrency

JVM internals

WebFlux

Education

B.S. in Computer Science or related

Tools

Spring Boot

Spring MVC

Spring Security

OpenAPI/Swagger

Protobuf/gRPC

Redis/Memcached

Job description

Apple is seeking a software engineer to join IS&T Customer Systems in Sunnyvale, CA. You will own end-to-end delivery of features for high-scale customer experiences, from design through testing, deployment, and production observability.

The role emphasizes Spring-based backend development, JVM tuning, API design, and resilient microservices. 5+ years of experience in Java and cloud distributed systems are essential; BS in CS or related field is required.