Architecture. Integration. Assurance.
Systems Engineering at QDSS provides a disciplined, interdisciplinary framework for designing, integrating, and managing complex aerospace and defense systems across the full lifecycle. We translate mission needs into clear, traceable requirements and integrated architectures that align hardware, software, and verification from concept through sustainment.
Industry Challenge
Modern defense programs operate in an environment defined by multi-domain integration, accelerating technology convergence, constrained schedules, and evolving mission demands. Without a structured systems foundation, requirements drift, integration challenges surface late, and costly rework undermines performance and readiness. In mission-critical environments, fragmented engineering is not just inefficient. It is a risk to operational success.
Why It Matters
Systems Engineering is the backbone of reliable and successful engineering outcomes. It ensures that systems are designed “right” and that they will fulfill the intended mission in real world environments. By establishing traceable requirements, rigorous verification and validation, and disciplined lifecycle oversight, Systems Engineering reduces risk, enhances interoperability, improves quality, and drives down total cost of ownership.
Our Approach
QDSS applies a holistic Systems Engineering process that aligns mission and stakeholder needs with technical execution. We begin with operational concepts and stakeholder analysis, then translate those into measurable requirements and architectures. Through iterative modeling, multidisciplinary integration, risk-based trade studies, and model-based systems engineering (MBSE) practices, we ensure balanced solutions that optimize performance, cost, schedule, and risk. Our approach embeds verification & validation throughout, enabling early detection and resolution of design issues.
What We Deliver
- Requirements Definition & Traceability: Clear, verifiable requirements that align capabilities with customer intent.
- System Architecture & Detailed Design: Scalable architectures that balance performance, risk, and integration complexity.
- Integration & Verification Plans: Structured integration and test strategies to validate system behavior against requirements.
- Risk & Trade-Space Analyses: Quantitative analyses for informed decision making across technical domains.
- Lifecycle Engineering Strategy: Planning for sustainment, upgrades, and evolving operational needs
Customer Impact
Our Systems Engineering engagements strengthen customer confidence and reduce program risk. By anchoring development on well-defined, traceable requirements and by using model-based practices, QDSS helps customers accelerate delivery, avoid late-stage rework, and achieve higher operational readiness. Organizations leveraging our Systems Engineering capabilities experience enhanced interoperability, more predictable performance against mission goals, and measurably lower lifecycle cost.
Our Disciplines
Systems Engineering at QDSS integrates many complementary technical areas to ensure end-to-end success:
Model-Based Systems Engineering (MBSE)
Uses structured models as the authoritative information source for design, analysis, and verification throughout the lifecycle.
Systems Architecture & Integration
Development of system and subsystem interfaces and logical/physical structures.
Risk & Trade-Space Analysis
Techniques to quantify and manage technical, schedule, and cost risk across alternatives
Requirements Engineering & Management
Disciplined capture, flowdown, and traceability of stakeholder and system requirements.
Verification & Validation Engineering
Test design and assessment ensuring system outputs satisfy requirements and mission needs.






Chris Hardgrave joined Quest Defense in April 2024 as Vice President for Strategic Accounts. He is responsible for sales, growth, and development of strategic relationships for new business development efforts in the Aerospace and Defense sector. Chris works in the Washington, D.C. office.

As Chief Engineer for Quest Defense, Jon is responsible for ensuring that sound engineering processes are maintained and followed by our employees working in a diverse set of services and disciplines across all verticals. In this role he also leads Quest Defense’s efforts to develop new methods and technologies to help grow the business through innovation, as well as building and promoting the technical reputation of the company in the public sphere.
Jeff Fischer serves as a board member for Quest Defense Systems and Solutions business. Additionally Jeff is the Operations Leader for the Quest Global Aerospace and Defense Industry.

Steve Gerber is President and CEO of QuEST Defense Systems and Solutions business and is responsible for providing the leadership and growth of this venture.
Joe supports Special Missions across Quest Global to include key client contract negotiations, strategic business solutions, M&A, and culture endeavors.
Frank Kendall is an independent consultant to defense industry firms and non profit research organizations. He is a Senior Fellow at the Center for American Progress, a Senior Advisor to the Center for Strategic and International Studies, and a member of th e Council on Foreign Relations. Among other industry positions, he is a member of the board of directors of Leidos Corporation and of Leonardo Electronics USA Inc. From 2012 to 2017, Mr. Kendall served as the Under Secretary of Defense for Acquisition, T echnology and Logistics (AT& after serving as the Principal Deputy Under Secretary from 2010 2012. Mr. Kendall has over 45 years of experience in engineering, management, defense acquisition, and national security affairs in private industry, governmen t, and the military.
John Thackrah is the founding Principal of Sextant Solutions LLC, an aerospace, maritime and government acquisition consultant.
Page Hoeper is a private consultant, corporate director, and venture capitalist. Since leaving government service, Mr. Hoeper has focused on corporate governance and board service. He chairs the boards of OnPoint Technologies, Inc., 501c(3) venture capital fund established by Congress to focus on emerging commercial technologies of interest to the U.S. Army, and Quest Defense Systems & Solutions, a provider of engineering services to the U.S. defense industry.
As the President of Quest Global, Bob is responsible for establishing and maintaining senior customer relationships, catalysing new business development, and overseeing innovative and transformational deals. In this role, he also assists in building relationships with strategic acquisitions for the company.