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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."

Do you love building solutions to handle global complexity and immense scale? Imagine what you could do here.

equipment and systems to deliver compute, storage, and networking services for teams across Apple, including its internal developer community. From individual facilities to a worldwide network, Infrastructure Services ensures the technology underneath everything works without question.

Description

The Apple Backbone Engineering group operates one of the world's most extensive, critical, and high-performance Global Wide Area Networks (WAN). We are seeking a Senior Software Engineer to design, build, and scale our next-generation Software Defined Networking (SDN) and Software Defined Infrastructure (SDI) platforms.

In this role, you will lead the architecture and implementation of distributed WAN controllers, automated configuration generation and intent-push engines, real-time streaming telemetry pipelines, and distributed control planes that govern global traffic routing, path computation, and network resiliency. If you are passionate about distributed systems, routing protocol daemons, network element programmability, and building carrier-grade platforms from the ground up, come join our team.

As a Senior Software Engineer on the Apple Backbone team, you will architect, build, and scale mission-critical software systems that govern Apple's global WAN and core network infrastructure.

","responsibilities":"Distributed WAN Controllers & Control Planes: Design fault-tolerant SDN controllers and state synchronization systems for global traffic engineering, dynamic path optimization, and intent-based routing

Configuration Modeling & Automated State Push: Architect declarative config generation, schema validation, and transactional push engines to multi-vendor network elements using OpenConfig/IETF YANG models and gRPC

Routing & Forwarding Plane Interaction: Build software controllers that can create customized routing / forwarding table views and program the control / data planes on the physical and containerized routers using gRIBI or vendor specific SDKs and APIs.

IP/Optical Cross-Layer Integration: Extend controller capabilities to bridge IP and optical transport layers

Streaming Telemetry & Observability: Build reliable, high-throughput telemetry and analytics pipelines using NetFlow, IPFIX, gNMI, gRPC, BMP, and OpenTelemetry that is engineered to operate at Global scale ingesting several 100s of Millions of BGP routes and flow records

High-Performance Microservices & Resiliency: Implement secure, low-latency services (Go, C, Python) with TLS/mTLS, adopting SRE best practices and GitOps-driven deployment (Kubernetes, Terraform, ArgoCD).

Preferred Qualifications

Strong working knowledge of core routing protocols and architectures (BGP, MPLS, TCP/IP).

Deep Domain knowledge in Software-Define Networking (SDN) control and data planes, overlay networks and Linux Networking constructs such as eBPF, XDP, OVS.

Hands-on experience with routing daemons (Juniper cRPD, FRR, GoBGP, BIRD) and multi-vendor NOS APIs (Junos, Cisco IOS-XR, Arista EOS, SONiC).

Experience with streaming telemetry and programmability tooling (gNxI, OpenConfig/IETF models, BMP, NetFlow).

Familiarity with next-generation optical transport networks, Open Line Systems (OLS), and coherent pluggables (400ZR/800ZR) from vendors like Ciena, Infinera, Cisco/Acacia, Nokia, or ADVA.

Experience with Linux networking internals and container orchestration (Docker, Kubernetes, GitOps).

BS, MS, or PhD in Computer Science, Computer Engineering, or equivalent practical industry experience.

Minimum Qualifications

8+ years of software engineering experience building and operating large-scale distributed systems and network software.

Strong programming proficiency in Go (Golang), C, or Python (high-concurrency/systems programming).

Hands-on experience developing secure, high-throughput microservices using gRPC, Protocol Buffers, and REST with TLS/mTLS.

Solid foundation in distributed systems principles: consensus algorithms (e.g., Raft, Paxos), state synchronization, concurrency, and fault tolerance.

Experience with declarative configuration modeling, schema validation, and automated config deployment/push workflows to network devices.

Direct experience designing and building fault-tolerant mechanisms, including self-healing, active remediation, circuit breaking, load shedding, and blast-radius mitigation for network services.

Deep foundation in computer science fundamentals, including distributed systems architecture, concurrency models, graph algorithms, and systems design

Demonstrated ability to model complex failure domains, handle network partitions and split-brain scenarios, and reason rigorously about system behavior under extreme load and degradation

Direct experience developing SDN Controllers, Path Computation Engines (PCE), or WAN Traffic Engineering platforms in hyperscale or carrier networks.

Proven track record with modern observability tools (Prometheus, Grafana, OpenTelemetry) and robust CI/CD pipelines.

Pay & Benefits

At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $184,700 and $324,800, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan. You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits

Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

About Apple

Working at Apple means doing more than you ever thought possible and having more impact than you ever imagined.

Size: 10,000+ employees
Industry: Technology: Manufacturing

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