Sparc Technology Services Inc
Senior Next.js UI Developer
Full Time • Irving TX
Replies within 24 hours
Job Title: Senior Next.js UI Developer
Job Location: Phoenix AZ/ Irving TX – 5 days Onsite
Job type: Contract/ C2C
Need an experienced Next.js UI Sr. Developer to join our engineering team. The ideal candidate has strong front end expertise, deep knowledge of React and Next.js , and experience building high performance, scalable, and secure user interfaces. You will collaborate closely with backend engineers, and designers to deliver modern and responsive applications.
Key Responsibilities
- Develop, maintain, and optimize web applications using Next.js, React, and modern UI frameworks.
- Build reusable UI components, layouts, and design system compliant interfaces.
- Work with REST APIs or internal services and manage client‑side/server‑side data flows.
- Use state management solutions such as Zustand, Redux Toolkit, or TanStack Query (React Query).
- Implement SSR/SSG/ISR strategies for performance, and scalability.
- Ensure responsiveness, accessibility, and cross‑browser compatibility.
- Implement secure authentication and authorization flows (e.g. MSAL, OAuth).
- Implement client side error logging and monitoring to improve application reliability
- Collaborate with UX designers to convert wireframes into smooth user experiences.
- Write unit, integration, UI, and E2E tests using Jest, Testing Library, and Playwright.
- Follow CI/CD pipelines and deployment workflows (e.g., Azure DevOps or container‑based deployments).
Required Skills & Experience
- Strong proficiency in JavaScript, TypeScript, React, and Next.js.
- Hands‑on experience with Next.js App Router, routing, layouts, and data‑fetching patterns.
- Solid understanding of modern UI/CSS frameworks: Tailwind CSS, Coin Base Design System(CDS)
- Strong understanding of web performance optimization, caching, prefetching, in modern apps
- Experience with Git, branching strategies, and agile development environments.
- Knowledge of web performance and security best practices
- Strong understanding of error handling, logging, and debugging strategies
- Experience integrating with .NET backend services or SignalR (real‑time updates).
Education Required::
• Bachelor’s degree in Computer Science, Information Technology, Engineering, or equivalent practical work experience.
Compensation: $60.00 - $65.00 per hour
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