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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mobile Systems Engineer (iOS Focus) - **Company:** Magnet Forensics - **Location:** United States (Remote available) - **Experience:** Expert - **Salary:** $130,000.0 - $180,000.0 - **Contract:** Permanent contract - **Skills:** Computer-Aided Design, Application Programming Interfaces (APIs), Apple IOS, C++ (Programming Language), Code Review, Computer Programming, Software Debugging, Digital Forensics, File Systems, Firmware, Python (Programming Language), Key Management, Real-Time Operating Systems, Reverse Engineering, Systems Integration, Toolchain, Mobile Os, Git, Selinux, IDA Pro, Build Tools, Objective C++ - **Published:** August 6, 2026 - **Apply:** https://www.builtincolorado.com/auth/login?destination=/job/senior-mobile-systems-engineer-ios-focus/9767090 ## About the Role The work spans multiple platforms. Day to day, this role will spend significant time on iOS, but you should also expect to work on Android and on the Graykey product itself. We don't silo people by platform. Senior Engineers on this team are expected to follow problems wherever they go in the stack. This is a Senior, small, but mighty, hands-on Team. The work is technically deep and the platform knowledge required is real. You can't build this kind of integration without understanding how mobile operating systems actually work underneath the API surface. Mobile platforms change with every major release, and parts of what we do don't exist in any public documentation. You need to be comfortable working in that kind of ambiguity., Python (!!!). Critical, not optional. We use Python extensively and at production scale. This isn't scripting or tooling. You need to be strong here: type systems, packaging, performance, and writing code that doesn't get rewritten by the next person to touch it. Python is load-bearing in this stack and weak Python in this role causes real problems. Objective-C, C/C++, Systems programming, memory management, and low-level interface work. Meaningful time will be spent here. General * 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. Nice To Have * Reading-level reverse engineering skills with IDA Pro, Ghidra, or Binary Ninja, enough to make sense of stripped binaries you didn't write. * Objective-C runtime internals: method swizzling, dyld, class-dump. * Android internals: SELinux, Binder IPC, TrustZone, dm-verity. * Embedded systems background: real-time operating systems, kernel programming on resource-constrained hardware. * Background in digital forensics, incident response, or law enforcement tooling. ## Description Lead design and implement deep mobile platform integrations (primarily iOS) across the Graykey product. Debug across layers (Python, native C/C++, OS userspace and kernel), analyze crash dumps and disassembled binaries, drive features from design through production, mentor engineers, and collaborate with firmware and product teams to ensure reliable multi-device, multi-OS operation., * 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., You DON'T need to be an Exploit Developer or Vulnerability Researcher. You DO need to read iOS internals fluently enough to integrate work into a product that runs across many device generations and iOS versions without breaking. ## Related Videos - [Enhancing Workload Security in Kubernetes](https://www.wearedevelopers.com/videos/356-enhancing-workload-security-in-kubernetes) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Edge AI on iOS: Beyond the Cloud, Designing the Next Generation of Intelligent On-Device Apps](https://www.wearedevelopers.com/videos/100225-edge-ai-on-ios-beyond-the-cloud-designing-the-next-generation-of-intelligent-on-device-apps) - [For the Cars and the Curious: Android Drift](https://www.wearedevelopers.com/videos/499-for-the-cars-and-the-curious-android-drift) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [Scalable architecture for mobile apps](https://www.wearedevelopers.com/videos/275-scalable-architecture-for-mobile-apps) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Cross Platform Mobile Development Frameworks to Use in 2025](https://www.wearedevelopers.com/magazine/404-cross-platform-mobile-development-frameworks-to-use-in-2025) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Dev Digest 118 - not a total recall](https://www.wearedevelopers.com/magazine/452-dev-digest-118-not-a-total-recall) - [Dev Digest 127 - putting 5 rings on it](https://www.wearedevelopers.com/magazine/464-dev-digest-127-putting-5-rings-on-it) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)