System Software Engineer

System Software Engineer

Role Overview

We're looking for a System Software Engineer with strong systems programming and networking

expertise to develop and maintain the core infrastructure that connects software platforms to

physical iOS and Android devices. This role focuses on building and managing the protocols,

daemons, and communication layers that enable real-device automation, remote debugging, and

large-scale telemetry collection.

What You'll Do

• Design and maintain the device connectivity stack — including USB and network

based device sessions using usbmuxd, remote, and Apple's

CoreDevice/RemoteXPC framework

• Build and extend low-level communication layers that interface with iOS internals

(lockdownd, DTServiceHub, XPC services)

• Develop system-level daemons and services on Linux and macOS that handle

device multiplexing, session management, and protocol translation

• Work with transport protocols (TCP, QUIC, HTTP/2, WebSocket, RPC) and apply

them in the context of high-reliability device tunneling

• Collaborate with platform and product teams to expose device capabilities —

screenshots, logs, crash reports, network HAR capture — reliably and at low latency

• Keep pace with Apple's evolving device communication model (e.g., the iOS 17+

shift from usbmuxd/lockdownd to remoted/RemoteXPC) and adapt the platform

accordingly

What We're Looking

• 5+ years of systems-level software engineering experience

• Deep knowledge of network protocols: TCP/UDP, QUIC, TLS 1.3, HTTP/2, HTTP/3, WebSocket

• Proficiency in Python and Go

• Experience with POSIX systems programming: sockets, process management,

multithreading

• Experience debugging with lldb, dtrace, Wireshark, or similar low-level tools

• Understanding of network stack/OSI model and devices/protocols falling under each layer -

MAC/ARP, IP, ssh/scp, DNS, SSL/TLS

• Experienced in developing REST API, websockets, RPC/gRPC protocols and WebRTC

• Solid understanding of Unix system, OS internals and networking

Nice to Have

• Experience with libimobiledevice or similar open-source device tooling

• Knowledge of Android's adb protocol and USB debugging stack

• Background in VPN/tunneling (WireGuard, IPSec)

• Prior work on test automation infrastructure or mobile DevOps platforms

• Hands-on experience with iOS device communication protocols: usbmuxd, lockdownd,

RemoteXPC, CoreDevice(5.