Title: Principal System Engineer/Enterprise Architect KBR — Delivering Solutions, Changing the World. KBR is a global leader in delivering technology-driven, mission-critical, and sustainable solutions that truly matter. For over a century, we have powered bold missions across defense, space, industry, and government through our two core business lines Mission Technology Solutions and Sustainable Technology Solutions. With nearly 38,000 talented people operating in more than 80 countries, we thrive on a culture built on safety, integrity, and teamwork. At KBR, we empower our people to solve the world’s toughest challenges and create lasting value for communities and the planet. We don’t just deliver results, we deliver game-changing solutions, innovative technology, deep domain expertise, and cutting-edge technologies. KBR is seeking a Principal System Engineer/Enterprise Architect to lead the development and maintenance of a model-based IT enterprise architecture spanning Australia, the UK, and the US. You will work with enterprise architects, technical teams, and business partners to define model views, gather essential data, and translate complex IT architectures into clear, actionable models. This role also oversees the optimization of engineering applications that support project delivery, fostering innovation and continuous improvement across global operations. Key Responsibilities: + Develop and maintain a model-based IT enterprise architecture spanning Australia, the UK, and the US to support global project delivery. + Collaborate with IT Enterprise Architects to define model views, gather essential data, and ensure architecture accuracy and usability. + Guide and mentor partners unfamiliar with modeling, translating complex IT architectures into clear, structured models. + Engage with cross-functional teams including content providers, consumers, developers, engineers, and business analysts—to align technical solutions with business needs. + Champion innovation and continuous improvement to enhance system performance and overall architecture quality. Basic Qualifications: Citizenship & Clearance: Must be a US Citizen. Must have a TS/SCI Clearance with a CI Polygraph or be able to obtain and maintain. Education & Experience: + B.S. Degree in Systems Engineering, Computer Science, Information Technology, or related field and 8–12 years of prior relevant experience + OR Masters with 6–10 years of prior relevant experience. + Additional years of experience may be considered in lieu of a degree. Technical Expertise: + Proficient in Systems Modeling Language (SysML) and Model-Based Systems Engineering, with proven experience translating concepts into SysML or UML. + Strong knowledge of enterprise architecture frameworks. + Excellent communication skills for technical writing, oral briefings, and executive-level products. + Ability to consider IT architecture issues from many different perspectives. + Passion for staying up to date with industry trends and advancements. Preferred Qualifications: + 6-10 years of experience working with or in the Intelligence Community (IC). + SysML Model Builder Intermediate or SysML Model Builder Advanced certification. + Experience analyzing compliance with an IT Enterprise Architecture. + Experience with Model-Based Systems Engineering tools (e.g., MagicDraw, Rational Rhapsody, Cameo, Genesys, etc.). Travel Requirements: Less than 20% Scheduled Weekly Hours: 40 hours with the ability to work variable hours with global teams Location: Must reside in the U.S.. Preferred that candidates reside near/around Houston, TX. Additional Notes: The selected applicant may be subject to a government security investigation and must meet the eligibility requirements for access to classified information. Basic Compensation: $112,700-169,000. The salary range posted is based on the national average. The offered rate will be based on the selected candidate’s location, knowledge, skills, abilities, and/or experience, contract affordability, 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. Benefits: KBR offers a selection of competitive lifestyle benefits which could include a 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 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. 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.