X11/X-Windows/Linux Software Developer

Job Description
A leading aerospace and defense technology company is seeking an experienced X Windows / X11 Linux Software Developer to support mission-critical applications used in high-performance, real-time environments. This full-time role offers a hybrid work structure, with opportunities to collaborate on advanced systems that support air traffic control, defense, and other complex operational domains.

As an X11 developer, you’ll contribute to the maintenance and evolution of mature graphical systems built on X Windows, GNOME, and related Linux desktop technologies. This is a unique opportunity to apply deep knowledge of low-level Linux graphics programming and windowing systems in a highly impactful setting.

Required Skills & Experience

• Strong expertise in X Windows/X11 development

• Proficiency with C and C++ in a Linux environment

• Experience with Motif, Xt, or other X11-based widget toolkits

• Solid knowledge of UNIX/Linux internals, including window/session management

• Familiarity with Wayland, GNOME, or legacy GUI frameworks

Desired Skills & Experience

• Background in real-time or embedded systems

• Experience supporting or migrating legacy GUI systems

• Knowledge of multi-threaded application development

• Prior work in aerospace, defense, or industrial control systems

What You Will Be Doing

Tech Breakdown

• 60% X Windows/X11 GUI Development

• 25% Linux System Integration and Maintenance

• 15% Tooling and Debugging of Legacy Graphics Applications

Daily Responsibilities

• 70% Hands-On Coding and Debugging

• 20% Refactoring and Enhancing Existing Codebases

• 10% Collaboration with System Architects and Hardware Teams