Senior Embedded Software Engineer

We don’t just build technology—we engineer the future. From next-gen aerospace to cutting-edge defense systems, we tackle the toughest, mission-critical challenges that keep people safe and push the limits of innovation. This is where problem-solvers, innovators, and big thinkers thrive. 

Quest Defense Systems & Solutions is seeking a Senior Embedded Software Engineer to support a mission-critical effort focused on advancing assured Positioning, Navigation, and Timing capabilities for military platforms operating in complex and contested environments.

In this role, you will design, develop, debug, and test embedded software that supports real-time system functionality, interface integration, and reliable data communication across connected systems. This is a strong fit for an engineer who enjoys hands-on C++ development, I/O and interface work, embedded system troubleshooting, and building software that directly supports resilient navigation and timing capabilities.

The ideal candidate brings a strong foundation in embedded software, experience with back-end C++ and system interfaces, and the ability to collaborate across engineering teams to validate software performance and system integrity. Experience with Embedded Linux, DDS communications, Qt or XAML GUI tools, MIL-STD-1553, I2C, BSPs, drivers, or PNT-D technologies is highly valuable.

This opportunity may be performed in a remote or hybrid/onsite capacity, with travel to Cedar Rapids, Iowa, up to 25% as needed. U.S. citizenship is required.

This is a temporary hourly position with the potential for extension or conversion to a regular full-time salaried position based on business needs, performance, and available opportunities. Conversion is not guaranteed.

Key Responsibilities:   

• Design, develop, and maintain embedded software in C++ for mission-critical navigation and timing systems.
• Support back-end software development, input/output processing, and interface integration across embedded systems.
• Develop, debug, and troubleshoot software functionality in lab, integration, and system-level environments.
• Analyze and test internal interfaces to support reliable communication, data flow, and overall system performance.
• Create, execute, and maintain unit tests, ad hoc tests, and formal test procedures to verify software functionality and integrity.
• Support integration of serial and digital I/O interfaces, including communication with hardware, drivers, and related system components.
• Collaborate with cross-functional engineering teams, including software, systems, hardware, and test, to resolve technical issues and support program milestones.
• Document software design, test results, defects, and technical findings in alignment with engineering and program standards.
• Support software updates, issue resolution, and validation activities throughout the development lifecycle.

Required Qualifications: 

• U.S. citizenship is required.
• Bachelor’s degree in Computer Engineering, Computer Science, Electrical Engineering, Software Engineering, or a related STEM field.
• 7+ years of experience in embedded software development.
• Strong C++ development experience, with emphasis on back-end software, system-level development, and input/output processing.
• Experience debugging, troubleshooting, and testing embedded software in lab, integration, or system-level environments.
• Experience working with serial, digital I/O, or other hardware/software interfaces.
• Ability to develop and execute unit tests, integration tests, or software validation procedures.
• Strong communication skills and the ability to collaborate with software, systems, hardware, and test engineering teams.

Preferred Qualifications: 

• Experience with DO-178C software development or verification
• Experience with Embedded Linux.
• Experience with Qt, XAML, or other GUI development tools.
• Familiarity with DDS communications.
• Experience with I2C, MIL-STD-1553, or similar serial/data bus protocols.
• Basic knowledge of Board Support Packages, device drivers, or low-level hardware integration.
• Experience with Positioning, Navigation, and Timing systems, including PNT-D or assured PNT technologies.
• Experience supporting defense, aerospace, avionics, or other mission-critical embedded systems.

The QDSS Advantage:  

At QDSS, our advantage is purpose-driven work, collaborative teams, and complex challenges that push boundaries and build lasting impact. You’ll grow your career while contributing to mission-critical programs that demand excellence and shape the future. 

What You’ll Find Here 

• Work That Matters – Next-generation, safety- and mission-critical projects where your contributions have real-world impact. 
• Growth That’s Supported – Competitive compensation, employer-matched 401(k), certification assistance, and clear opportunities for advancement. 
• A Culture That Works – A flexible, collaborative, and people-first environment where teamwork, innovation, and balance are valued. 

Benefits Include 

• Competitive pay, comprehensive medical/dental/life and disability coverage, 401(k) with employer match, professional development support, and a flexible, friendly workplace.