Strategic Interfaces Systems Engineer

• Develop, author, and maintain Interface Control Documents (ICDs) for cross-system interfaces between space (including spacecraft and payloads) and ground segments.
• Serve as the system-level ICD owner/book boss, responsible for coordinating inputs, maintaining document structure, adjudicating comments, and ensuring the ICD reflects the authoritative technical baseline.
• Work closely with the Configuration Management team in preparing for Engineering Review Boards (ERBs) and Configuration Control Boards (CCBs)
• Develop interface diagrams, data dictionaries, message formats, command and telemetry mappings, and system level interface descriptions.
• Identify interface risks and drive technical issue resolution across engineering teams.
• Support system integration and test activities by providing authoritative interface documentation and clarification.
• Ensure that documentation complies with best practices, program standards, and regulatory requirements.
• Provide technical Subject Matter Expert (SME) support to review of Prime contract Change Proposals
• Manage and coordinate Interface Working Groups, ensuring consistent communication across all stakeholders.
• Work closely with MSEIT modeling team to ensure models align with relevant ICDs and requirements flowdown associated with the cybersecurity technical baseline.
• Develop acquisition and technical briefings, plans, papers, and other documentation in support of Gov’t decision making. Collaborating with prime contractors, other support contractors, government civilians, and members of the U.S. Space Force

• Ability to obtain and maintain a Secret clearance is required for this position
• Bachelor’s degree in engineering, computer science, or related technical field.
• 8+ years of experience in satellite systems, spacecraft development, or aerospace engineering.
• 5 years’ experience working on DoD programs
• Direct experience developing or managing Interface Control Documents (ICDs) for complex systems.
• Strong familiarity with spacecraft subsystems (e.g., payloads, RF comms, power, GNC, thermal, propulsion, on-board Command and Data Handling).
• Ability to read and create schematics, interface diagrams, and data communication structures.
• Experience with systems engineering tools (e.g., DOORS, Cameo).
• Excellent technical writing, documentation, and communication skills.
• Strong interpersonal skills, communication (oral and written), and presentation skills
• Demonstrated ability to clearly articulate ideas, recommendations and options to customers, senior leaders, and stakeholders
• Proficient in Microsoft Office products (e.g., Word, Excel, PowerPoint)

Preferred Experience

• Active SECRET or higher clearance
• Master’s degree in engineering, computer science, or related technical field.
• 12+ years’ experience with space systems in support of space or ground segment development
• 12+ years’ experience in a space acquisitions environment
• Experience in satellite hardware and software development
• Experience in Military, DoW, or Intelligence Community space
• Experience with MILSATCOM, such as ESS, AEHF, EPS, PTES, PTS, WGS, and FAB-T terminal programs
• Proficient in usage of model-based systems engineering (MBSE) tools
• Professional certifications (e.g., PMP, INCOSE CSEP / ESEP / ASEP)

• Location: On-site. Due to security requirements, work is required to be performed on-site in a secure facility.
• Travel Requirements: Minimal
• Working Hours: Standard, 40 hours per week (Full-time), * For California only, the salary range for this position is approximately $135,600 to $169,400. The offered rate will be based on the selected candidate’s knowledge, skills, abilities and/or experience and in consideration of internal parity.

Other Compensation

KBR may offer bonuses, commissions, or other forms of compensation to certain job titles or levels, per internal policy or contractual designation. Additional compensation may be in the form of sign on bonus, relocation benefits, short term incentives, long term incentives, or discretionary payments for exceptional performance.

KBR Benefits

KBR offers a selection of competitive lifestyle benefits which could include 401K plan with company match, medical, dental, vision, life insurance, AD&D, flexible spending account, disability, paid time off, or flexible work schedule. We support career advancement through professional training and development.

Ready to Make a Difference?

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., The MILSATCOM Systems Engineering, Integration and Test (MSEIT) team in support of Space Systems Command (SSC) in El Segundo is seeking an individual to provide requirements development and management support for the Military Satellite Communications (MILSATCOM) Capability area. The MILSATCOM portfolio of programs has an ongoing need for IA/Cybersecurity support, to meet the needs of our emerging next-generation protected SATCOM.

The MSEIT contract provides leading-edge Systems Engineering & Integration (SE&I) support for the U.S. Space Force’s SSC. We support the Space Force’s acquisition of state-of-the-art MILSATCOM systems, providing global secure, survivable, and protected communications for our nation’s warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems., If you’re excited about making a significant impact in the field of space defense and working on projects that matter, we encourage you to apply and join our team at KBR. Let’s shape the future together.

Belong, Connect and Grow at KBRAt KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team of team’s philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver - Together.