Software Engineer – Edge Devices, Mobile

This is a fully remote position, open to applicants in Poland.

📋 Description

• Develop and take ownership of the cross-platform Rust peer runtime across Windows, Android, Linux, and eventually macOS.

• Manage process lifecycles, background tasks, networking, automatic updates, and ensure stability on unmanaged hardware.

• Port the peer to Android utilizing NDK/JNI, which includes managing foreground services and optimizing battery usage.

• Incorporate real and emulated device farms into the fleet.

• Integrate Chromium’s Cronet C++ network stack and browserless HTTP clients through verified Rust FFI libraries.

• Collect hardware and OS reconnaissance data, including TCP/TLS/HTTP fingerprints.

• Share technical knowledge with the Browser and Antiban teams.

• Construct per-device metrics for uptime, drop-off rates, bandwidth, and success rates.

• Implement peer-level functionalities such as captcha solving and browser rendering.

• Securely isolate the peer from untrusted pages and hosts.

• Participate in the on-call rotation and conduct post-mortem analyses.

• Author RFDs, review architectural designs, and enhance cross-platform Rust engineering practices.

• Collaborate with the Team Lead, Principal Engineer, Browser Stack squad, and Antiban squad.

⛳️ Requirements

• Over 5 years of production experience with Rust, demonstrating a successful history of shipping and maintaining software end-to-end.

• Rust code deployed on at least two platforms, including Windows, macOS, or Android, with experience on at least one mobile platform.

• Familiarity with OS permissions, processes, and background behaviors.

• Experience in interfacing Rust with C/C++ libraries and native OS APIs, including JNI/NDK, Win32, or POSIX.

• Knowledge of lifetimes, memory ownership, and cross-language threading.

• Deep understanding of TCP, TLS, and HTTP protocols down to the packet level.

• Ability to dissect network traffic and analyze differences in client fingerprints.

• Experience in instrumenting systems and measuring fleet health without direct device access.

• On-call operational excellence.

• Security-conscious design principles for code operating on third-party devices.

• Exceptional written communication skills.

• Proficiency in Rust, tokio, tonic.

• Knowledge of C++ and Cronet.

• Experience with Kotlin/Java on Android.

• Familiarity with gRPC and Protobuf over mTLS.

• Understanding of the Chromium network stack and custom browserless HTTP clients.

• Experience with GCP, Kubernetes, Valkey, BigQuery.

• Knowledge of Prometheus, Grafana, Loki, and OpenTelemetry.

🏝️ Benefits

• Truly remote-first work from any location that suits you best.

• Flexible working hours.

• Freedom and flexibility to work from where you are most productive.

• Supportive and high-trust work environment.

• Opportunities to attend conferences.

• Engage with team members from around the world.

• Work with state-of-the-art open source technologies and tools.

• Be part of a self-motivated, progressive, and multi-cultural team.

• Dedicated time and resources for architectural research and long-term feature design.