What we do matters.

We are a high-growth, agile company creating safety and mission-critical solutions in a synergistic environment between our people and our client partners. From F-35 and F-16 fighter jets to the latest aviation technologies to medical devices, spacecraft, and satellites – our engineers have worked on some of the coolest Aerospace, Defense, Space, and Medical Device products in the world.

Be a part of the team that is powering engineering solutions that drive technology.

Quest Defense Systems and Solutions is seeking highly skilled Software Engineers to perform requirements-based unit tests for embedded software in a nuclear power plant controls system. Additionally, the engineer will use Python to develop User Interface (UI) for a software verification tools. The project is governed by the NQA-1 safety standard, a quality assurance framework for nuclear facility applications. Testing should be performed with a safety and completeness mindset prescribed by DO-178. However, NQA-1 is less prescriptive, acting as a high-level quality framework, and less structured. Comprehensive testing is required (MCDC coverage).

Due to the nature of the project, all applicants must be U.S. Citizens or US lawful permanent residents.

This role is remote.

Key Responsibilities:

• Develop User Interface (UI) using Python Tkinter library
• Developing controls/monitoring software, low-level requirements-based tests to generate full-coverage LDRA verification procedures.
• Analyzing and dispositioning structural coverage holes.
• Coordinating with the customer to ensure full test coverage, correct expected results, and communication/disposition of test findings.
• Executing the tests in the LDRA test setup on both simulated and on-target environments.
• Reviewing test results and test time history data, during test development, regression runs, and to help debug software issues.
• Identifying findings to the customer in instances where test outcomes do not align with requirements or with expected results.
• Authoring and participating in formal reviews of test cases, procedures, and results.

Required Qualifications:

• Bachelor's or Master's degree in aerospace engineering, electrical engineering, software engineering, or a related technical field.
• Experience developing Python UI using Tkinter or similar libraries (pySide, pyQt, wxPython, etc)
• Experience performing low-level software requirements-based testing under DO-178B/C or other safety-critical process standards
• Experience testing with LDRA or a similar tool (i.e. VectorCAST)
• Proficiency in understanding C programming, preferably with experience developing C code.
• A general understanding of control laws and redundancy management

Preferred Qualifications:

• Commercial controls industry experience or other embedded software development experience
• 5 years developing embedded software in safety-critical 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.