Apple
Software Engineer, Object Storage, London
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Join the Apple Cloud Object Store team as a software engineer
Join the Apple Cloud Object Store team as a software engineer to help lead the development of one of Apple's largest storage platforms — used by hundreds of internal services at exabyte scale. You'll take ownership of some of the hardest problems in large-scale distributed storage: from keeping thousands of tenants fairly and safely sharing the same infrastructure, to improving durability, performance, and scalability as the platform continues to grow. This is a role for an engineer who can drive complex, ambiguous technical problems end-to-end and shape the direction of the platform, not just execute against a fixed spec.
DESCRIPTION
Operating a shared storage platform at exabyte scale means constantly balancing competing demands: keep the system fast and available for everyone, protect it from any single tenant's traffic, and keep evolving the architecture without disrupting the services built on top of it. As a lead engineer on this team, you'll help set direction across several of these areas, including:
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- Multi-tenant isolation and fairness. Keeping thousands of tenants safely sharing the same infrastructure — enforcing quotas, shaping and rate limiting traffic, and containing the blast radius when one tenant's behavior threatens to degrade everyone else.
- Availability and durability at scale. Designing for hardware and component failure as a constant, not an edge case, while keeping data durable and available across a massive, distributed fleet.
- Performance and efficiency. Finding and eliminating bottlenecks in a complex system, and making sure optimization effort goes where it has the most impact.
- Architectural evolution. Retiring legacy approaches, simplifying fragmented systems, and making large-scale changes safely in a system that can't afford downtime.
MINIMUM QUALIFICATIONS
- In-depth experience as a backend software engineer with a strong grasp of computer science fundamentals: networking, filesystems, security concepts.
- Experience designing, building, and operating large-scale distributed systems, with a strong grasp of concepts like availability, congestion control, observability, and fault tolerance.
- Experience driving complex, ambiguous technical projects end-to-end and collaborating across teams to build consensus.
- Experience with at least one of: multi-tenant resource isolation, rate limiting, or quota systems; large-scale storage systems; or distributed systems performance/reliability work.
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PREFERRED QUALIFICATIONS
- Experience with flow control, overload protection, or admission-control systems (e.g., adaptive throttling, load shedding, backpressure).
- Experience with object storage systems or similar backend storage engines.
- Experience building observability/telemetry that makes complex system behavior explainable to engineers or customers.
- Familiarity with distributed state-propagation protocols (e.g., gossip protocols).
- Familiarity with modern data lake architectures and query engines.
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