WE ARE LOOKING FOR Senior Software Engineer We are looking for a Senior Software Engineer with deep production experience in Embedded Linux and/or Nix-based systems who has successfully taken complex system software from development to product and supported it over its lifecycle.

You will own and evolve core parts of the system: from boot and kernel, through NixOS modules, virtualization boundaries, hardware enablement, and developer tooling, all the way to release engineering and long-term maintenance.

This role requires strong systems thinking, broad sub-system debugging skills, and the confidence to work across multiple subsystems (graphics, audio, UI, storage, networking, etc) while maintaining security, reproducibility, and robustness.

Key Responsibilities System & Platform Development

• Design, implement, and maintain production-ready NixOS modules and system configurations used across Ghaf targets (x86_64 and ARM64) .
• Develop and evolve embedded Linux system components, including kernel configuration, init, systemd services, hardware enablement, and device-specific support.
• Contribute to Ghaf’s virtualized architecture, including MicroVM orchestration, storage VMs, networking isolation, and inter-VM communication.
• Support secure boot, TPM integration, and other hardware-backed security features.

Productization & Lifecycle Ownership

• Take ownership of system features from early development through production release and long-term maintenance.
• Ensure systems are robust, reproducible, and field-upgradable using Nix and declarative configuration.
• Participate in release engineering, stabilization, regression fixing, and monthly platform releases.
• Maintain backward compatibility and manage system evolution with minimal disruption to users and integrators.

Debugging & Systems Engineering

• Debug complex issues spanning bootloaders, kernel, system services, virtualization layers, networking, graphics, and hardware drivers.
• Perform cross-layer debugging on both physical hardware and virtualized environments.
• Analyze and resolve performance, reliability, and security issues across system boundaries.

Tooling, CI, and Developer Experience

• Improve and maintain build, cross-compilation, and CI pipelines based on Nix flakes and binary caches.
• Contribute to system tests, VM-based tests, and automated validation.
• Improve developer workflows, diagnostics, and documentation to support a growing contributor base.

Collaboration & Open Source

• Collaborate closely with security researchers, hardware engineers, and application teams.
• Review contributions and mentor less experienced engineers.
• Contribute to open-source discussions, design reviews, and technical documentation within the Ghaf ecosystem.

Required Qualifications

• 8+ years of experience in systems software development.
• Proven experience shipping and maintaining production embedded Linux systems.
• Strong hands-on experience with Linux, Nix, NixOS, or other declarative build/configuration systems.
• Deep understanding of:

Linux boot process and system initialization

Kernel configuration and drivers.

Systemd and low-level system services

Filesystems, storage, and networking

• Demonstrated ability to debug across multiple layers (hardware ↔ kernel ↔ userspace ↔ virtualization).
• Solid Git experience and familiarity with large, long-lived repositories.