Lead ReactJS Developer

Ethereum Technologies LLC; Dallas (TX); On-site; USD 110,000 - 170,000; Full time

Job summary

ETHEREUM TECHNOLOGIES LLC in Dallas, TX seeks a senior React.js developer to architect and build large-scale front-end apps using React.js and TypeScript. You will design scalable state management, implement routing, and integrate CI/CD pipelines.

Collaborate with backend teams, UI/UX, and QA to deliver high-performance, secure interfaces, write unit tests with Jest/RTL, and maintain clean code with thorough documentation. You will optimize performance and stay current with React tooling.

Qualifications

• Strong experience in leading and architecting large-scale React.js applications.
• Hands-on React.js development with TypeScript and modern libraries.
• Expertise in React ecosystem: Hooks, lifecycle, and state management patterns.
• Experience with API integration using Axios, including interceptors and error handling.
• Experience with React Router for nested, guarded and lazy routes.
• Collaborate with UI/UX to build responsive interfaces per design specs.
• Develop reusable components and maintainable front-end architectures.
• Improve performance via memoization, code splitting, and bundle optimization.
• Write secure front-end code and address vulnerabilities.
• Collaborate with backend engineers, QA, and product teams.
• Unit testing with Jest/RTL for high coverage and stability.
• Maintain documentation and code quality through reviews and refactoring.
• Stay up-to-date with modern React features and tooling.
• Mentor teammates and provide technical guidance.

Responsibilities

• Lead front-end architecture and implement scalable React components.
• Integrate backend services via Axios with robust error handling.
• Develop and maintain routing, state management, and UI integration.
• Collaborate with design, backend, QA, and product teams for end-to-end features.
• Write unit tests (Jest/RTL) and conduct thorough debugging.
• Optimize performance and bundle size while ensuring security.

Skills

React.js

TypeScript

Frontend architecture

Redux Toolkit

RTK Query

React Router

Axios

Testing (Jest/RTL)

Code quality & docs

Performance optimization

Tools

Jest

React Testing Library

CI/CD

Axios tooling

Job description

• Architecture: Strong experience in leading and architecting large-scale React.js applications. Skilled in designing scalable front-end architecture, routing structure, state management layers, and integrating automated build, deployment, and CI/CD pipelines.
• React.js Development: Build dynamic, high-performance web applications using React.js, TypeScript, and modern libraries. Implement interactive features, complex data flows, and scalable state-driven UIs.
• Expertise in React Ecosystem: Hands-on experience with Hooks, component lifecycle, advanced state management, and performance patterns. Expertise in Redux Toolkit, RTK Query, React Query, and application-wide state architecture.
• API Integration (Axios): Integrate backend services using Axios with interceptors, global error handling, retry logic, and optimized API communication patterns.
• Route Management: Architect and implement routing using React Router, including nested routes, guarded/private routes, role-based access, and lazy-loaded route structures.
• UI Integration: Collaborate with UI/UX teams to build visually appealing, responsive, and user-friendly interfaces that match design specifications.
• Component Development: Develop reusable, modular, and scalable React components using best practices, ensuring maintainability and consistency across applications.
• Front-end Optimization: Improve performance through memorization, virtualization, code splitting, minimizing re-renders, and optimizing bundle size for seamless user experience.
• Security: Write secure and efficient front-end code, implement client-side validations, handle sensitive data safely, and address vulnerabilities proactively.
• Collaborative Development: Work closely with backend engineers, designers, architects, QA, and product teams to ensure smooth integration of front-end and backend workflows.
• Testing and Debugging: Conduct thorough debugging and implement strong testing practices to ensure functional stability, responsiveness, and error-free user experiences.
• Unit Testing: Proficient in writing unit test cases using Jest or React Testing Library (RTL), ensuring high coverage, stability, and bug-free releases.
• Code Maintenance and Documentation: Follow clean code principles, maintain clear documentation, perform refactoring, and ensure code quality through reviews and continuous improvement.
• Stay Up-to-Date with Technology: Keep current with modern React features, frontend tooling, state management patterns, and performance best practices to stay ahead of industry standards.
• Communication & Training: Strong communication skills with the ability to mentor team members, document best practices, and provide technical guidance to development teams.

ETHEREUM TECHNOLOGIES LLC is an equal opportunity employer inclusive of female, minority, disability and veterans, (M/F/D/V). Hiring, promotion, transfer, compensation, benefits, discipline, termination and all other employment decisions are made without regard to race, color, religion, sex, sexual orientation, gender identity, age, disability, national origin, citizenship/immigration status, veteran status or any other protected status. ETHEREUM TECHNOLOGIES LLC will not make any posting or employment decision that does not comply with applicable laws relating to labor and employment, equal opportunity, employment eligibility requirements or related matters. Nor will ETHEREUM TECHNOLOGIES LLC require in a posting or otherwise U.S. citizenship or lawful permanent residency in the U.S. as a condition of employment except as necessary to comply with law, regulation, executive order, or federal, state, or local government contract