GNC Engineer - Hybrid (TS/SCI Clearance)

Title:GNC Engineer - Hybrid (TS/SCI Clearance)

At KBR, we deliver science, technology and engineering solutions to governments and companies around the world. KBR employs approximately 37,000 people worldwide with customers in more than 85 countries and operations in over 28 countries. KBR is proud to work with its customers across the globe to provide technology, value-added services, and long-term operations and maintenance services to ensure consistent delivery with predictable results.

Trinzic is the future independent company to be created through the planned spin-off of KBR's Mission Technology Solutions business, expected in January 2027. Our people work at the frontier of what is possible, delivering solutions in challenging environments and advancing some of the world's highest-priority national security and space missions.

Backed by decades of mission success, deep expertise, and trusted partnerships, Trinzic will launch as a global organization with more than 18,000 employees supporting customers around the world. Join us at a defining moment and help shape the future of a company built to tackle complex challenges and make a meaningful impact.

Candidates who join KBR's Mission Technology Solutions business before the spin-off will transition to Trinzic when the separation is complete and will not need to reapply for employment. 

Belong. Connect. Grow. with KBR! Around here, we define the future.We are a company of innovators, thinkers, creators, explorers, volunteers, and dreamers. But we all share one goal: to improve the world responsibly and safely.

Position Summary- Hybrid THIS POSITION IS CONTINGENT UPON CONTRACT AWARDWe are seeking a GNC Engineer to support the design, development, testing, and real-time operation of advanced aerospace systems. This role bridges engineering development and flight/operational execution, requiring strong technical depth, sound judgment under pressure, and the ability to translate complex system behavior into actionable decisions.

The ideal candidate brings experience across flight dynamics, control systems, software interaction, and operational environments.

This is a remote position with limited, business-need driven travel to onsite locations.

Key Responsibilities GNC System Development & Integration

• Support design, analysis, and verification of guidance, navigation, and control algorithms and architecture

• Review and guide flight software design to improve system performance, robustness, and operability

• Evaluate system behavior across full mission phases (e.g., ascent, on-orbit, entry, proximity operations)

Operational Readiness & Real-Time Support

• Develop and execute operational concepts for GNC systems in mission or test environments

• Monitor vehicle performance and make time-critical recommendations during dynamic operations

• Support anomaly resolution, fault response strategies, and contingency planning

Requirements, Tools & Procedures

• Define system and console requirements for monitoring and commanding GNC subsystems

• Develop operator displays, telemetry utilization strategies, and command interfaces

• Maintain flight rules, procedures, and operational documentation

Testing & Validation

• Support system-level testing (integrated labs, simulations, hardware-in-the-loop environments)

• Participate in verification of telemetry, command pathways, and system responses

• Contribute to development and validation of contingency commanding capabilities

Required Qualifications- TS/SCI Clearance

• Bachelor’s degree in aerospace engineering, Mechanical Engineering, or related field (advanced degree preferred) and 10+ years of experience

Strong foundation in:

• Orbital mechanics / astrodynamics

• Control systems and state estimation

• Guidance algorithms and vehicle dynamics

Experience working wi...