Senior Full-Stack Software Engineer

Trinzic; Beavercreek Township (OH); Hybrid; USD 130,000 - 180,000; Full time

Benefits offered by this job

401K with company match

Medical, dental, vision insurance

Paid time off

Job summary

KBR is seeking a Senior Full-Stack Software Engineer to join the Iron Stallion team. You will build secure, data-intensive software across web and backend layers, employing TypeScript, JavaScript, and modern UI frameworks, integrated with Java/Spring Boot or C#/.NET backends.

You will mentor engineers, participate in design reviews, and help drive secure development practices while collaborating with cybersecurity, data science, and product teams to deliver incremental, value-driven releases.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a related technical discipline.
• 8+ years of relevant experience with backend and frontend tech.
• Experience building responsive web apps consuming RESTful APIs and distributed systems.
• Strong frontend architecture, reusable components, and modern tooling.
• Experience with AI-assisted development and reviewing AI-generated code.
• Ability to obtain and maintain a U.S. Government security clearance.

Responsibilities

• Design, build, and sustain responsive, user-facing mission applications with TypeScript/JavaScript and UI frameworks.
• Lead translation of operator workflows into accessible web experiences with good architecture.
• Design and enhance RESTful APIs, microservices, and event-driven workflows.
• Use AI-assisted tools for coding, testing, documentation, and troubleshooting.
• Validate AI-generated code for correctness, security, and performance.
• Develop human-in-the-loop AI features for anomaly detection and optimization.
• Establish reusable UI components and test strategies (Vitest/Jest/Cypress).
• Collaborate with cross-functional teams to deliver incremental releases.

Skills

JavaScript/TypeScript

UI frameworks (Vue/React/Angular)

REST APIs

AI-assisted development

Security & DevSecOps

Cross-team collaboration

Strong communication

Education

Bachelor's degree in CS/CE/SE

Tools

Docker

Kubernetes

Git

Vitest/Jest/Cypress

Job description

Senior Full-Stack 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.

Join the Iron Stallion team to build secure, data‑intensive software that helps space operators turn information from multiple sources into timely operational insight.

This senior engineer will work across modern web applications, backend services, analytical workflows, and AI‑enabled capabilities while providing technical direction and helping the team deliver secure, maintainable solutions.

The role uses approved AI‑assisted development tools to accelerate coding, testing, documentation, and modernization.

Engineers remain accountable for the quality, security, and correctness of all delivered software.

What You Will Do

• Design, build, and sustain responsive, user‑facing mission applications using TypeScript, JavaScript, HTML5, CSS, and modern UI frameworks such as Vue, React, or Angular, integrated with Java/Spring Boot, C#/.NET, or comparable backend technologies.
• Lead the translation of operator workflows into clear, accessible, and maintainable web experiences, including responsive layouts, application architecture, state management, data visualization, performance, and browser compatibility.
• Design and enhance RESTful APIs, microservices, and event‑driven workflows that ingest, normalize, correlate, analyze, and visualize data from multiple sources.
• Use approved AI‑assisted development tools for code generation, testing, refactoring, documentation, troubleshooting, and code review.
• Validate AI‑generated code for correctness, security, performance and maintainability before integration.
• Develop human‑in‑the‑loop AI features for anomaly detection, recommendations, data correlation, predictive insight, and workflow optimization.
• Establish reusable UI components and shared web libraries, and guide automated unit, integration, and end‑to‑end testing using tools such as Vitest, Jest, Cypress, Playwright, or equivalent.
• Collaborate with operators, analysts, systems engineers, cybersecurity teams, data scientists, and product owners to turn mission needs into incremental releases.
• Collaborate with platform and cybersecurity teams on DevSecOps pipelines, containerized deployments, observability, security scanning, and software supply‑chain controls.
• Lead design discussions and peer reviews, mentor engineers, and promote secure software development, frontend engineering, testing, and responsible AI‑assisted engineering practices.

Required Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, Software Engineering, or a related technical discipline and 8 or more years of relevant experience. Equivalent directly related experience may be considered.
• Expertise in at least one backend ecosystem, such as Java with Spring Boot or C# with .NET, plus advanced experience with JavaScript or TypeScript, HTML5, CSS, and a modern UI framework such as Vue, React, or Angular.
• Experience architecting and developing responsive web applications that consume RESTful APIs, along with distributed systems, microservices, asynchronous processing, or event‑driven applications.
• Experience with data‑intensive applications, relational or document databases, and messaging or streaming technologies such as Kafka or equivalent.
• Advanced experience with frontend architecture, reusable component design, source control, automated testing, browser‑based debugging, performance optimization, and modern frontend build tools such as Vite or Webpack.
• Practical experience using an enterprise‑approved AI coding assistant and reviewing its output for inaccurate, insecure, or fabricated code.
• Strong troubleshooting and communication skills across software, data, infrastructure, cybersecurity, and mission teams.
• Ability to obtain and maintain a U.S. Government security clearance.

Preferred Qualifications

• Active Secret clearance or higher and experience with DoD, Intelligence Community, government, or other mission‑critical software.
• Experience with Docker, Kubernetes, CI/CD pipelines, containerized deployments, observability, dependency scanning, release automation, and software supply‑chain controls.
• Experience with Space Domain Awareness, satellite operations, orbital analysis, sensor systems, geospatial visualization, command and control, or mission planning.
• Experience integrating AI or machine‑learning models into operational applications, including human‑in‑the‑loop decision support.
• Experience with RAG, semantic retrieval, agentic workflows, Azure AI Foundry, Azure OpenAI, AWS Bedrock, or equivalent enterprise AI platforms.
• Experience deploying software in restricted, disconnected, on‑premises, or classified environments and familiarity with RMF, ATO, zero‑trust, SBOM, or responsible‑AI practices.
• Experience as a technical lead, software architect, or mentor on a multidisciplinary engineering team.

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.