Expert System Engineer responsible for architecture and integration solutions for AT&T. Leading system design, technical leadership, and performance analysis for high - performance platforms.
About the role
- Senior Mobile Systems Engineer focusing on iOS at Magnet Forensics, responsible for system engineering for the Graykey product across multiple platforms.
Responsibilities
- Lead design and implementation of complex mobile platform integrations across the Graykey product.
- Debug hard problems that span multiple layers: Python, native C/C++, and mobile OS userspace and kernel behavior.
- Own root cause analysis on issues that require reading crash dumps, kernel panics, and disassembled binaries.
- Drive implementation from design through system integration, testing, and production.
- Mentor engineers on the team and help raise the technical bar through code review.
- Collaborate with firmware, product, and other engineering teams across the company.
Requirements
- 8+ years of professional engineering experience, with at least 4 years working at the iOS platform layer.
- Experience with cross-compilation toolchains and embedded build systems targeting ARM64.
- Comfortable debugging remote devices and reading crash dumps and core files.
- Strong with git and senior-level code review workflows.
- A-series/M-series SoC architecture: AP/SEP boundary, iBoot, DFU, restore mode.
- XNU kernel fundamentals: IOKit, kernel extensions, and how to actually debug at that layer.
- Memory protection: ASLR, PAC, and PPL.
- Code signing, entitlements, and the full trust chain.
- Sandboxing, container isolation, and platform-level IPC.
- Secure Enclave: its role in key management and where its boundaries are.
- Data protection classes, file system encryption, and key derivation.
- Keychain internals: what’s happening underneath the API.
Benefits
- Generous time off policies
- Competitive compensation
- Volunteer opportunities
- Reward and recognition programs
- Employee committees & resource groups
- Healthcare and retirement benefits
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