Senior React UI Engineer — Performance & Security

Valiant Technologies LLC; Austin (TX); On-site; USD 120,000 - 180,000; Full time

Job summary

VALIANT TECHNOLOGIES LLC is seeking a seasoned Front-End Engineer in Austin to build reusable, scalable React components and implement hooks, managing state with Redux or Context API while integrating REST and GraphQL services.

You will collaborate with designers and backend engineers, optimize performance, and write unit tests with Jest or similar tools. A strong focus on security, code quality, and staying current with React patterns is essential.

Qualifications

• 8-10 years of hands-on experience in UI / Front-End Development.
• Advanced experience with React.js, React Hooks, Redux, Flux, and component-based architecture.
• Experience with Webpack, Enzyme, and other front-end build/testing tools.
• Familiarity with REST APIs, GraphQL, and third-party service integration.
• Awareness of front-end security practices (CSP, XSS prevention).
• Hands-on experience writing unit tests and maintaining high test coverage.

Responsibilities

• Build reusable, scalable React components following best practices.
• Implement React Hooks, state management (Redux / Context API), and component lifecycle methods.
• Integrate and consume RESTful APIs and GraphQL services.
• Use React ecosystem tools such as Webpack, Enzyme, Redux, and Flux.
• Work on application performance tuning, code splitting, and rendering optimizations.
• Follow front-end security best practices to ensure secure UI development.
• Develop and maintain unit tests using Jest, React Testing Library, or similar frameworks.
• Collaborate closely with designers, backend engineers, and product managers to deliver high-quality UI.
• Debug, troubleshoot, and resolve UI/UX issues across the application.
• Stay updated with the latest React updates, patterns, and industry best practices.
• Work with version control tools like Git/GitHub for code management.

Skills

UI / Front-End Development

Problem solving

Communication

Education

Bachelor’s degree in CS or related field

Tools

React.js

React Hooks

Redux

Flux

Webpack

Enzyme

REST APIs

GraphQL

Job description

VALIANT TECHNOLOGIES LLC is seeking a seasoned Front-End Engineer in Austin to build reusable, scalable React components and implement hooks, managing state with Redux or Context API while integrating REST and GraphQL services.

You will collaborate with designers and backend engineers, optimize performance, and write unit tests with Jest or similar tools. A strong focus on security, code quality, and staying current with React patterns is essential.