> Markdown version of [/jobs/ext/2058402-ui-angular_react-engineer-ts-sci-with-polygraph-required](https://www.wearedevelopers.com/jobs/ext/2058402-ui-angular_react-engineer-ts-sci-with-polygraph-required). 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 Angular_React Engineer - TS/SCI with Polygraph Required - **Company:** Core Interface Corporation - **Location:** United States - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, HTML5, Microsoft Azure, Browser Compatibility, Cascading Style Sheets (CSS), Code Review, Continuous Integration, D3.Js, Information Engineering, Extract Transform Load (ETL), Data Visualization, Hibernate (Java), Java Persistence API, Spring Framework, E2e Testing, Ui Patterns, SQL Databases, TypeScript, Web Content Accessibility Guidelines, WebSocket, Apache Yarn, ReactJS, Delivery Pipeline, Cypress (Programming Language), Backend, Git, Data Layers, Webpack, AngularJS, Material UI, Integration Tests, Information Technology, Playwright, Real Time Data, Npm(Software), Graphql, Front End Software Development, React Testing Library, Docker, Elk Stack - **Published:** August 14, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9090909/ui-angular-react-engineer-tssci-with-polygraph-required ## About the Role * Active TS/SCI with Polygraph * U.S. Citizenship * Bachelor's degree in Computer Science, Engineering, or a related technical field (or equivalent practical background) * Strong fluency in React or Angular , with proficiency in TypeScript * Experience with, or knowledge of, the Spring Framework * Experience with, or knowledge of, SQL and ORM libraries such as Hibernate/JPA ) * Solid grounding in JavaScript, HTML5, and CSS3 , including responsive/mobile-first design * Comfort working with REST-based services * Experience writing unit and integration tests (Jest, React Testing Library, or equivalent) and familiarity with modern build tooling ( Vite, Webpack, npm/yarn ) * Familiarity navigating Git-based team workflows * Clear communication skills in collaborative engineering environments Additional Strengths That Stand Out * End-to-end testing experience with Cypress or Playwright * Contributions to data visualization interfaces or dashboards (D3.js, Recharts, or similar) and familiarity with the ELK stack * Familiarity with GraphQL and/or WebSocket -based real-time data * Exposure to cloud deployment pipelines and CI/CD practices (AWS, Azure, or similar) * Experience with containerized development environments (Docker) * Working knowledge of Section 508 or WCAG 2.1 accessibility expectations * Time supporting cleared mission or federal program environments ## Description At Core Interface, we believe great software is built by small teams of thoughtful engineers working on meaningful problems. Our work supports mission-critical federal programs where the quality and reliability of the data layer directly determines mission outcomes. We're growing our data engineering team and are looking for ETL-focused engineers across multiple experience levels who take real ownership of the data lifecycle - from ingest through delivery - and communicate clearly about architecture tradeoffs. What You'll Do in This Role * Build responsive, accessible applications using React or Angular * Translate mission and user requirements into intuitive UI solutions * Integrate frontend systems with APIs and real-time data * Develop reusable component libraries and shared UI patterns * Participate in code reviews and design discussions * Improve performance, accessibility, and cross-browser compatibility * Collaborate closely with backend engineers, analysts, and mission users ## Related Videos - [Web-based Information Visualization](https://www.wearedevelopers.com/videos/84-web-based-information-visualization) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [Can SVG be fast? Rendering a scatter chart with over 10k points](https://www.wearedevelopers.com/videos/100299-can-svg-be-fast-rendering-a-scatter-chart-with-over-10k-points) - [The Pragmatic Architect: Balancing Necessity vs. Sufficiency in React Systems](https://www.wearedevelopers.com/videos/2101-the-pragmatic-architect-balancing-necessity-vs-sufficiency-in-react-systems) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again)