Location: New Jersey, USA

Work Mode: Onsite – 5 Days a Week

Experience: 10+ Years

Job Overview

We are seeking an experienced Senior Website Developer with strong expertise in Next.js and Sanity CMS to design, develop, and maintain enterprise-grade, high-performance websites. The ideal candidate will have extensive experience building scalable, SEO-optimized web applications using modern frontend technologies and headless CMS architecture.

This role requires close collaboration with product managers, UX/UI designers, backend developers, and business stakeholders to deliver exceptional digital experiences while ensuring performance, accessibility, and maintainability.

Key Responsibilities

Design, develop, and maintain enterprise-grade websites using Next.js and Sanity CMS.
Build reusable, scalable, and maintainable frontend components using React.js and TypeScript.
Customize and extend Sanity Studio, including schema design, content models, and editorial workflows.
Integrate RESTful APIs and GraphQL services with frontend applications.
Optimize website performance, accessibility, responsiveness, and SEO.
Implement server-side rendering (SSR), static site generation (SSG), incremental static regeneration (ISR), and App Router features.
Collaborate with UX/UI designers to deliver intuitive and responsive user experiences.
Participate in architecture discussions, code reviews, and technical planning.
Troubleshoot production issues and continuously improve application performance.
Mentor junior developers and promote engineering best practices.
Work closely with cross-functional teams in an Agile/Scrum environment.

Required Skills & Qualifications

Bachelor’s degree in Computer Science, Information Technology, or a related field.
10+ years of software development experience.
Strong expertise in:
Next.js (SSR, SSG, ISR, App Router, Server Components)
React.js
JavaScript (ES6+)
TypeScript
Hands-on experience with Sanity CMS, including:
Custom schemas
Studio customization
GROQ queries
Headless CMS architecture
Content modeling and workflows
Strong knowledge of:
HTML5
CSS3
Tailwind CSS
Responsive Web Design
Experience with state management libraries such as Redux, Zustand, or Context API.
Experience integrating REST APIs and GraphQL.
Strong understanding of website performance optimization, accessibility (WCAG), and SEO best practices.
Excellent debugging, problem-solving, and communication skills.

Preferred Qualifications

Experience deploying applications on Vercel, AWS, Azure, or similar cloud platforms.
Experience with CI/CD pipelines using GitHub Actions.
Knowledge of NextAuth/Auth.js authentication.
Experience with testing frameworks such as Jest, React Testing Library, or Cypress.
Experience working in Agile/Scrum teams.

What We’re Looking For

Strong ownership mindset with the ability to independently drive development initiatives.
Excellent collaboration and stakeholder management skills.
Passion for building high-quality, scalable web applications.
Ability to mentor team members and contribute to engineering excellence.

Entrans Inc.

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Senior Website Developer (Next.js & Sanity CMS)