Senior Website Developer (Next.js & Sanity CMS)
Location: Hackensack, NJ
Work Mode: Onsite – 5 Days a Week
Employment Type: 24+ Months
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.
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