Senior Software Engineer

Title: Senior Software Engineer

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.

KBR is seeking a Senior Software Engineer to lead the development, integration, and evaluation of software solutions for various systems operating under various environments. This role supports modeling, simulation, and operationally relevant systems across research and applied DoD programs. These programs primarily involve, but not always, position, navigation, and timing (PNT) systems.

This position requires deep technical expertise in software development and PNT fundamentals, with the ability to design and perform algorithm implementation, guide technical execution, and work across system, algorithm, and integration boundaries. The developer will work closely with systems engineers and hardware teams to design, analyze, and mature PNT capabilities in laboratory and field environments.

Key Responsibilities

Design, develop, and maintain software supporting systems, simulations, and performance analysis environments

Lead development and implementation of algorithms grounded in first principles physics, including measurement modeling, error characterization, and estimator behavior under non ideal conditions

Architect and integrate within software frameworks supporting simulation, analysis, and test

Integrate software with hardware- and software-in-the-loop (HITL& SITL) and digital twin environments

Define and develop interfaces between software components and external systems

Lead and support test planning, execution, and analysis for PNT-focused experiments, demonstrations, and evaluations

Collaborate with systems engineers to align system requirements, hardware constraints, and software designs

Review, mentor, and provide technical guidance to junior and mid-level engineers

Document software designs, algorithms, and test results to support technical reviews and customer deliverables

Participate in team technical interchange meetings to describe technical activities, progress, issues, improvements, and more

Required Qualifications

Bachelor’s degree in Computer Engineering, Electrical Engineering or Aerospace Engineering

Strong verbal and written communications skills

8+ years of professional experience developing software for technical systems

Proficiency in C/C++ or Python with experience owning complex software components or frameworks

Experience developing software on Linux and Windows based systems

Strong understanding of PNT concepts (e.g., Global Navigation Satellite Systems (GNSSs),, inertial navigation, timing, sensor fusion) and associated error sources

Experience integrating software with complex systems, simulations, or external hardware components

Ability to obtain and maintain a U.S. DoD security clearance

Desired Qualifications

Advanced experience with GPS/GNSS signal processing, navigation algorithms, or timing systems

Experience developing or evaluating alternative or resilient PNT approaches

Experience with modeling, simulation, or digital twin environments supporting PNT analysis

Familiarity with real-time or embedded systems

Experience with HIL/SIL test architectures, laboratory integration, or field testing

Experience supporting DoD programs, laboratory R&D, or operational prototyping efforts

Basic Compensation: $150,000 - $200,000 (For Beavercreek, OH Only) The offered rate will be based on the selected candidate’s knowledge, skills, abilities and/or experience and in consideration of internal parity.

Additional 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.

Belong, Connect and Grow at KBR

At 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.

KBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.