Control System Engineer - Secret Clearance

We’re looking for humble geniuses who believe engineering can turn the impossible into reality—and who are driven to design, build, and test solutions that matter for some of the world’s most trusted companies. If you want to do meaningful work with a diverse team that believes in shared wins, continuous learning, and engineering a brighter future, this is the place for you. 

Quest Defense Systems and Solutions is actively seeking a highly skilled Control System Engineer specialized in Aircraft Engine Externals Design to join our dynamic aerospace engineering team. The successful candidate will play a crucial role in the development of control systems for aircraft engines, ensuring optimal performance, reliability, and safety.

Location: 100% onsite in Cincinnati, OH
Due to the nature of this work, applicants must be US Citizens and currently hold a clearance.

Key Responsibilities:

• Update requirements and develop linked control updates
• Run, analyze, and plot NPSS and dry rig test cases
• Develop simulation interfaces between engine model and control simulation
• Update AS/OS control interfaces as required
• Document build and simulation updating process
• Develop SCADE/Simulink diagrams based on requirements in CAMEO per program software standards
• Follow the Hierarchical Control Architecture (HCA) for appropriate data flow and update the HCA to keep it current
• Determine test protocols from the requirements and create test cases for requirements-based testing
• Use configuration management per program software standards
• Prepare and present review packages for informal and formal reviews

Required Skills:

• Bachelor’s degree in engineering or related field (BSME required).
• Experience with NPSS, SCADE, and Simulink (minimum of 1+ years)
• Proven experience in control systems engineering, preferably in aerospace or aviation industries, with a focus on aircraft engines with 3-6 years of experience.
• Due to the nature of the work, all candidates must be U.S. citizens and currently hold or be willing to obtain a clearance.

Desired Skills:

• Excellent problem-solving skills with the ability to analyze complex technical issues and propose effective solutions.
• Effective communication skills with the ability to collaborate with multidisciplinary teams and convey technical information clearly and concisely.

Physical Requirements & Work Environment:

• Mostly Office Environments, Occasional Shop Floor involvement.
• Substantial amounts of telephone, video conferencing and computer work.
• Heavily Regulated Industries with strict adherence to procedures.
• Flexibility to meet business deadlines by staying late or arriving early.
• Typical 8 hour days plus lunch / 40 hour weeks / core (required) hours are 9AM to 4PM
• Ability to use personal transportation to visit customer locations

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

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.