Title:Senior Software EngineerBelong. Connect. Grow. with KBR!KBR's National Security Solutions team provides advanced engineering and technology solutions supporting the intelligence, defense, and national security communities. Join a team dedicated to developing innovative software solutions that enable critical missions and shape the future of defense technology.Why Join Us?Innovative ProjectsWork at the forefront of software engineering, enterprise modernization, data integration, cloud technologies, and mission IT solutions.Collaborative EnvironmentJoin a high-performing team that values innovation, technical excellence, knowledge sharing, and continuous improvement.Mission ImpactDesign and deliver software systems that directly support national security, defense operations, and mission-critical business objectives.About KBRKBR delivers science, technology, engineering, and logistics solutions that help accomplish some of the world's most challenging missions. Our Government Solutions team supports Department of Defense programs through innovative software engineering, systems integration, application modernization, and enterprise technology services.We are seeking an experienced Senior Software Engineer to support critical Air Force and DoD information technology programs. The successful candidate will serve as a technical leader responsible for designing, developing, modernizing, and maintaining enterprise applications and mission-critical software platforms while supporting operational mission objectives. This role offers the opportunity to work across the full software development lifecycle while collaborating with cross-functional engineering and program teams.Key ResponsibilitiesDesign, develop, and maintain scalable enterprise web applications and distributed software systems.Architect, develop, and support RESTful APIs and service-oriented solutions for internal and external stakeholders.Build modern, responsive user interfaces using Angular, TypeScript, HTML5, CSS, and related frontend technologies.Lead technical design and software architecture initiatives utilizing object-oriented programming principles and best practices.Collaborate with Program Managers, Product Owners, Architects, and Engineering teams to deliver high-quality software solutions.Support migration and modernization efforts involving legacy applications, cloud-based platforms, and emerging technologies.Design, optimize, and maintain database solutions utilizing SQL Server, Oracle, MySQL, Redis, and related technologies.Participate in code reviews, unit testing, debugging, deployment, and production support activities.Develop technical documentation, architectural diagrams, interface specifications, and software lifecycle artifacts.Evaluate and implement emerging technologies, including AI-assisted capabilities, automation tools, and integration frameworks.Analyze application performance and implement improvements to enhance reliability, scalability, maintainability, and user experience.Required QualificationsBachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field.8+ years of professional software development experience supporting enterprise technology environments.Strong proficiency in C#, .NET Core, .NET Framework, and object-oriented software development.Experience developing enterprise web applications using Angular and TypeScript.Experience designing, developing, and maintaining RESTful APIs and service integrations.Strong experience with SQL Server, Oracle, MySQL, or similar relational database platforms.Understanding of software development lifecycle (SDLC) methodologies and Agile development practices.Excellent problem-solving, analytical, and troubleshooting skills.Strong written and verbal communication skills.Ability to obtain and maintain a Secret Security Clearance.Required Technical SkillsC#.NET Core / .NET 8+ASP.NETAngularTypeScriptREST API DevelopmentSQL ServerOracleMySQLRedisEntity FrameworkDapperGit Version ControlLinux and Windows EnvironmentsObject-Oriented Design (OOD)Software Design PatternsMicroservices ArchitectureAgile Development MethodologiesApplication ModernizationTechnical DocumentationPreferred QualificationsExperience with Salesforce technologies, including Apex, Lightning Web Components (LWC), Flows, Triggers, and Connected Apps.Experience supporting large-scale enterprise software systems and high-volume applications.Experience leading technical initiatives, mentoring developers, or serving as a technical lead.Experience with cloud-based application development and integrations.Experience modernizing legacy software platforms and implementing scalable architectural solutions.Experience with AI-enabled technologies, proof-of-concept development, or automation initiatives.Master's degree in Computer Science, Software Engineering, or a related discipline.Desired CompetenciesSoftware Architecture & DesignFull-Stack DevelopmentEnterprise Application DevelopmentAPI Design & IntegrationDatabase Architecture & OptimizationSystems IntegrationCloud TechnologiesApplication ModernizationDevOps & CI/CD PracticesAgile Project DeliveryTechnical LeadershipStakeholder CollaborationTechnical DocumentationProblem Solving & InnovationBelong, 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.