JOIN AS NETWORK SYSTEMS DEVELOPER

Full-time · CDI Paris 13ème (on-site, hybrid or full remote) Salary aligned with the market + typical French benefits (Health Insurance, 50% Transportation card) About Kyber

Kyber is an open-source SDK and platform to control remote machines, from Remote Desktop to Robots Teleoperation/Teleobservation. Kyber is a multi-stream and multi-actuator transport in extremely-low latency, over the quic protocol.

Clients use Kyber to control robots, drones, desktop, servers in the cloud or just remote rendering of interactive 3D programs. Kyber is done for Remote RealTime, where every millisecond matters.

Kyber is developed by engineers from the VLC and FFmpeg community, and we code in Rust, in C and in assembly. We have some development in Go too.

We're a quite technical team, but cool to work with.

We are based in Paris area and open to Remote Work in Europe. Full time only.

Role

The successful candidate will be responsible for:

Designing, developing, and optimizing Network system components for Kyber Investigating and resolving complex issues related to performance, memory management, synchronization, and security Performing advanced debugging (crash dump analysis, kernel debugging, stack analysis, occasional reverse engineering) Writing clear and durable technical documentation Participating in low-level architecture decisions and critical code reviews Conducting continuous technical watch on Windows internals and system-level tooling Required Technical Skills Excellent knowledge of network architecture and ecosystems

Deep understanding of networking fundamentals (TCP/IP, UDP, congestion control, NAT traversal, encryption, streaming pipelines) Strong understanding of operating system concepts (threads, scheduling, memory, I/O, sockets) Hands-on experience with network debugging and analysis tools Proven experience with one or more of the following protocols: QUIC (mandatory), WebRTC, HLS, RTMP, USB over IP Programming Languages : C / C++ / Rust / X86/x64 Tools & Environment : Git and collaborative development workflows You 5 to 10 years of professional experience in software development, with a significant focus on Network programming Experience with embedded or constrained environments

Familiarity with media pipelines, real-time communication, or streaming infrastructure Knowledge of kernel-level networking or custom transport implementations Experience working with cross-platform systems (Linux, macOS, Windows, embedded OS) High level of rigor, autonomy, and attention to detail, Strong interest in solving non-trivial technical problems Ability to share expertise and mentor junior engineers Nice-to-Have

Experience in system security or Windows component hardening, Background in reverse engineering or malware analysis, Contributions to low-level or systems-oriented open-source projects Nice-To-Have

Experience in constrained environments (real-time systems, high availability, security-critical software)

15-Min Screening Call — Quick chat about motivation, fit and answer your non tech questions.

2x1-Hour Technical/Product Interview — Deeper dive into your problem-solving approach with our CTO and/or our lead solution architect

Team Meet & Greet — Informal session to ensure good culture fit.

Highly technical and intellectually challenging projects An environment that values genuine engineering expertise and that is tech focused (no nonsense meetings or reportings) Strong autonomy in technical decision-making FIRST NAME*

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