iOS Developer

Join the Silicon Valley Lab of a global airline to build and operate Apple Silicon-based MacBook systems as secure, headless edge and server nodes., This role focuses on running macOS as a production server platform, including Apple Content Caching for edge delivery, containerized services on Apple Silicon, fleet-scale security and management, and on-device vision workloads using Core ML. You will work with a small, high-impact U.S.-based team and counterparts in Japan to ensure reliability, performance, correctness, and security across live systems., Apple Silicon MacBook-as-Server Engineering

• Convert MacBooks into stable, headless server nodes with standardized builds, provisioning, and lifecycle management.
• Engineer power, battery, and thermal behavior for sustained workloads:
• Prevent sleep and unwanted wake events.
• Support lid-closed operation.
• Control power state and battery health strategy.
• Implement safe failure modes during power events.
• Optimize storage and filesystem behavior for cache workloads:
• Data and log separation, encryption, monitoring, wear, and durability considerations.
• Tune network and I/O performance on macOS for server-style throughput and latency.

Apple Content Edge Cache (macOS Content Caching)

• Build and operate a high-throughput edge caching system using Apple’s Content Caching feature.
• Implement and manage:
• Cache keying, TTL and validation, negative caching.
• Eviction policy, cache warming and prefetch.
• Request coalescing, backpressure, purge and invalidation.
• Ensure correctness under real-world traffic conditions:
• Range requests and partial content.
• High concurrency.
• Failure containment and resilience under load.
• Perform edge delivery performance engineering:
• TLS termination.
• HTTP/2 and HTTP/3/QUIC where applicable.
• Connection reuse, origin shielding, and latency reduction.
• Own instrumentation and SLOs:
• Cache hit rate and byte-hit ratio.
• Tail latency, disk pressure, eviction churn.
• Origin load and error budgets.
• Manage macOS-specific operational considerations:
• Predictable resource usage.
• Avoid interference with other macOS services.
• Maintain consistent cache behavior across OS upgrades.

Containers and Runtime Optimization (macOS + Apple Silicon)

• Package and operate services using containers on macOS.
• Run VM-backed Linux containers where required.
• Optimize performance across:
• Filesystem mounts and storage access.
• Networking modes.
• Resource controls and scheduling.
• Build speed and cold-start behavior.
• Maintain security and supply chain integrity:
• Image hardening.
• Signing and verification.
• SBOMs.
• Reproducible builds and patch cadence.

Apple Platform Security and Fleet Management

• Harden macOS systems for edge and server usage:
• FileVault strategy.
• Least privilege access.
• Service minimization.
• Firewalling and secure remote access.
• Tamper detection and audit logging integrity.
• Use Apple-native security primitives where appropriate:
• Secure Enclave and Keychain.
• CryptoKit.
• Code signing and notarization.
• macOS security boundaries.
• Operate fleets at scale:
• Apple Business Manager.
• MDM-driven configuration and policy enforcement.
• OS update strategy and inventory visibility.

Swift Tooling and Peripheral Workflows

• Build Swift-based tooling:
• macOS agents and command-line tools.
• iOS companion utilities where needed.
• Support platform peripheral workflows:
• NFC workflows via iOS Core NFC.
• Supported external readers connected to macOS nodes.
• Secure credential handling and auditing.

On-Device AI (Vision-Focused)

• Deploy and operate on-device vision workloads using Core ML.
• Optimize FastVLM-style pipelines for performance and correctness.
• Support benchmarking and tuning of on-device inference.
• This role does not include chat or LLM product development.

Do you have experience in macOS?, * Strong hands-on experience with macOS systems engineering on Apple Silicon.

• Deep understanding of:
• launchd and service design.
• Profiling, debugging, and performance analysis.
• Memory pressure, I/O behavior, and system stability.
• Production experience running containers (Docker or related tooling).
• Solid networking fundamentals:
• TLS.
• Connection management.
• Latency analysis and packet/application-layer troubleshooting.
• Production-grade Swift development for macOS and/or iOS.
• Security-first engineering mindset:
• System hardening.
• Secrets and certificate lifecycle management.
• Incident-aware design.
• Operational logging discipline.
• Ability to work independently in a small, highly technical team.
• English fluency required.

Preferred Skills

• Core ML deployment and performance tuning for vision-focused workloads.
• Camera pipeline experience using AVFoundation and/or Vision.
• Experience building or operating edge caching or CDN-like systems.
• Deep understanding of HTTP caching semantics, purge/invalidation, and range requests.
• Experience with MDM platforms (Jamf, Kandji, Mosyle).
• Familiarity with the EndpointSecurity framework.
• Knowledge of Apple platform internals:
• Virtualization.framework.
• NetworkExtension.
• DriverKit or IOKit integration patterns.

Pulled from the full job description

• 401(k)
• Health insurance
• 401(k) matching
• Paid time off
• Vision insurance
• Dental insurance, * Health, dental, and vision insurance
• Paid time off
• Opportunity to work on Apple-platform infrastructure and edge systems in a real-world aviation environment, * 401(k)
• 401(k) matching
• Dental insurance
• Health insurance
• Paid time off
• Vision insurance