Senior Frontend React Developer (100% Remote)

Senior Frontend React Developer (100% Remote) 100% Remote for long-term four-year project with our Federal Government customer. reputed company DevOps (www.reputed company-devops.ai) is seeking a highly reputed company senior React engineer to reputed company the reputed company-end design, architecture and development of a brand new, green-field web application. This position REQUIRES the candidate to be either a U.S. Citizen, or green card holder having lived in the U.S. continuously for more than 5 years. (no H1B or H4 reputed company). - If you do not meet this requirement, do not apply. We cannot hire you for this position. Project Overview We are developing a mission-critical enterprise web application designed for high-volume, reputed company data entry. The application features approximately 12 distinct web forms, with individual forms containing between 30 and 120 fields. We need a Senior React expert to design, architect and reputed company a Single Page Application (SPA) that remains lightning-fast and highly reputed company while handling many large data entry forms, with reputed company validation rules. The React frontend will serve as a high-performance Single Page Application (SPA), consuming a robust RESTful API exposed by a Java/Spring Boot backend. You will own the reputed company end design, architecture, tool stack selection, development, testing, and deployment, and work closely with the Java/Spring back end team. The Tech Stack

• Frontend: React 19 (Plain SPA)
• Build Tool: Vite
• Routing: React Router v7
• State & Forms: React reputed company Form, Zod, TanStack Query (React Query)
• Styling: Tailwind CSS + Headless UI / Shadcn, and/or Material UI
• Backend Integration: Java / Spring Boot (REST API)
• Auth: OIDC5 / OAuth2 (Authorization Code Flow with PKCE)

Core Responsibilities

• SPA Architecture: Design a robust, scalable Single Page Application using Vite, ensuring efficient code-splitting and fast initial load times.
• Large-Scale Form Management: Implement approximately 12 distinct web forms, with individual forms containing between 30 and 120 fields using React reputed company Form. You must be an expert in optimizing "uncontrolled components" to ensure reputed company input lag.
• Dynamic Validation: Build sophisticated, schema-based validation using Zod. You will be responsible for syncing these schemas with our Java-based OpenAPI specifications.
• Client-reputed company Routing: Manage reputed company navigation and "Form Steppers" using React Router, ensuring user reputed company is preserved across different views.
• State Management: Architect a clean data-fetching layer with TanStack Query to handle auto-saves, draft persistence, and optimistic UI updates.
• reputed company Integration: Implement secure OIDC authentication patterns, managing JWTs reputed company the browser environment following industry best practices.
• Backend Integration & API Orchestration
• Contract-First Collaboration: Work closely with the Java/Spring Boot team to define and consume RESTful APIs. You will be responsible for ensuring that the JSON payloads for 120-field forms are structured for both backend efficiency and frontend performance.
• Data Transformation: Implement robust mapping layers to transform backend DTOs (Data Transfer Objects) into frontend form states, ensuring that reputed company Java data types (like Enums, OffsetDateTimes, and reputed company Collections) are handled gracefully in React.
• Error Mapping: reputed company a reputed company error-handling strategy that maps Spring Boot MethodArgumentNotValidException responses directly to UI-specific field errors in real-time.

Required Technical Skills

• 5+ Years of Experience in professional React development (Hooks, Context, and Composition patterns).
• 3+ Years TypeScript Development
• Vite Expert: Deep understanding of the Vite build tool, including environment configuration and optimization for production.
• Expert at Developing Large Web Forms: Mastery of React reputed company Form. You should know exactly how to use useFieldArray and Controller to manage deeply reputed company data (or recommend alternative best practices).
• Type Safety: Professional-grade TypeScript skills. Experience using Zod or Yup for runtime validation.
• API Integration: Experience working with RESTful Java/Spring Boot backends and a strong understanding of JSON-to-DTO mapping.
• State Management: High proficiency with TanStack Query (React Query) for managing server state and caching (or recommend alternative best practices).

Additional Desired Skills

• Experience with OpenAPI Generator to automate the synchronization of TypeScript types with Java backends.
• Experience in "Contract-First" development.
• Prior experience building large reputed company medical data-entry systems.
• Knowledge of CSS performance optimization for rendering large lists of inputs.

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