> Markdown version of [/jobs/ext/3635074-ui-react-engineer-polygraph](https://www.wearedevelopers.com/jobs/ext/3635074-ui-react-engineer-polygraph). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# UI React Engineer - Polygraph

- **Company:** BTI360 INC.
- **Location:** United States
- **Salary:** $96,900.0 - $247,900.0
- **Contract:** Permanent contract
- **Skills:** HTML, JavaScript (Programming Language), Amazon Web Services, Cascading Style Sheets (CSS), Cloud Computing, Code Review, Continuous Integration, Data Discovery, Github, Identity and Access Management, JAWS Scripting Language, Object-Oriented Software Development, E2e Testing, Next.js, TypeScript, Network Routers, Tailwind, ReactJS, Cypress (Programming Language), Backend, Git, Build Management, Gitlab-ci, Material UI, Playwright, Build Tools, React Redux, JestJS, Restful APIs, Software Version Control, Software Library, Jenkins
- **Published:** October 8, 2026
- **Apply:** https://startup.jobs/ui-react-engineer-polygraph-required-bti360-website-10327432

## About the Role

* Active TS/SCI with Polygraph at time of application
 * Experience with source control (e.g. Git) and CI/CD pipeline tools such as Jenkins (preferred), AWS CodeBuild, GitLab CI, or GitHub Actions
 * Experience designing and implementing scalable, maintainable, and OOP based software in a containerized cloud environment (AWS preferred) leveraging foundational services for computing, identity management, and networking.
 * Proficiency in modern JavaScript/TypeScript, HTML, and CSS
 * Proficiency in building frontend applications with React and related libraries (e.g., React Router, Redux, Zustand, etc.)
 * Effective written and verbal communication skills necessary to perform job duties and collaborate with team members
 * Candidates must maintain a primary residence within a two-hour drive of Herndon, VA to support onsite collaboration as needed.

Desired skills:

 * Contributions to open-source libraries or community projects or personal projects
 * Experience with UI unit and E2E testing tools and frameworks such as (e.g., Jest, Vitest, Playwright, Cypress)
 * Familiarity with design systems and component libraries (e.g., Storybook, Tailwind CSS, Material UI)
 * Understanding of accessibility and usability best practices and tooling (e.g., JAWS, Lighthouse, Axe Devtools)
 * Experience with NextJS, Astro, or other React Metaframeworks

## Description

* Work closely with teammates and stakeholders in a Lean Agile environment to build mission-critical production applications focused on data discovery and analysis
 * Participate in code reviews, system design discussions, and continuous improvement initiatives
 * Leverage modern build tools, testing frameworks, and CI/CD pipelines to ensure quality and delivery speed
 * Design and build modern, performant, responsive user interfaces using React and related technologies
 * Collaborate with UI and backend engineers and product stakeholders to deliver intuitive and accessible user experiences that integrate with RESTful APIs