Senior C++ Workstation Developer

Job Title: Senior Linux C/C++ Workstation Developer

Location: Onsite - Philadelphia, PA
Work Hours: Between 7:00 AM and 6:00 PM EST (Standard 8 hours Shift)

Position Overview:

We are seeking a highly skilled Senior Linux Developer with deep expertise in C/C++ development for desktop environments. This role supports modernization and maintenance of mission-critical applications, including migration from legacy GUI frameworks to modern Linux display protocols. The developer will contribute to real-time processing, fault-tolerant systems, and secure, scalable software solutions.

Key Responsibilities:

• Design and maintain real-time, fault-tolerant desktop applications using C/C++ on Linux.

• Migrate legacy GUI applications from Motif/X11 to modern protocols like Wayland using GTK, Qt, or EFL.

• Develop Bash scripts for automation of builds, deployments, and diagnostics.

• Optimize performance using multithreading, memory management, and low-latency techniques.

• Debug and profile applications using gdb, valgrind, perf, and strace.

• Implement secure coding practices and support audit-readiness.

• Integrate GUI applications with enterprise platforms and middleware.

• Configure lightweight desktop environments and custom window managers.

• Manage source code using Bitbucket, Git, and CI/CD pipelines.

• Develop IPC mechanisms (sockets, shared memory, DBus) for inter-process communication.

• Document architecture, migration strategies, and operational procedures.

• Support containerized deployment using Docker.

Deliverables:

• High-performance compiled binaries and executables for Linux systems.

• Source code repositories with structured C/C++ code and version control.

• Bash scripts for automation and integration.

• GUI components migrated to modern toolkits.

• Documentation including API references, migration plans, and user manuals.

• Test suites for unit, integration, and performance testing.

• CI/CD pipeline configurations.

• Accessibility features and compliance support.

• Legacy code refactoring reports.

Required Qualifications:

• Bachelor s degree in Computer Science, Software Engineering, or related field.

• Minimum 10 years of hands-on C/C++ development experience on Linux.

• Proficiency in Bash scripting and legacy GUI frameworks (Motif, X11, MWM).

• Experience with Wayland, GTK, Qt, and EFL.

• Familiarity with Bitbucket, Git, CI/CD, and build systems (CMake, Make).

• Strong debugging and profiling skills.

• Knowledge of Linux internals, IPC, and performance tuning.

• Excellent documentation and communication skills.

Preferred Qualifications:

• Deep knowledge of Linux kernel scheduling for deterministic latency.

• Experience writing custom Wayland protocols and compositor extensions.

• Expertise in Zero-Copy IPC using shared memory for performance optimization.

Additional Information:

• This is an onsite role based in Philadelphia, PA.

• Candidates may be required to attend offsite software installations.

• The position supports a capital and reimbursable project under a technology refresh initiative.

***Lumen and / or its clients will not provide equipment (Laptop, monitor, etc.) to the selected contractor. The contractor must have their own equipment. Access to a virtual desktop set up (software) will be provided by Lumen s client, allowing the user access to the required systems and technology.***