Full Stack Developer (Next.js) Job Opportunities in Mumbai

Company: Hiya Digital Private Limited
Job Title: Full Stack Developer (Next.js)
Location: Chembur, Mumbai
Employment Type: Full-Time
Experience Required: 2+ Years
Department: Design & Development
Work Mode: Work From Office

Full Stack Developer (Next.js) Jobs in Mumbai at Hiya Digital

Hiya Digital Private Limited is hiring an experienced Full Stack Developer (Next.js) in Mumbai to build, enhance, and maintain high-performance web applications for real-world business and digital projects.

This Full Stack Developer job in Mumbai is focused on modern JavaScript development, with Next.js as a mandatory frontend technology, supported by React.js, Node.js, REST APIs, databases, Git, and modern web development practices.

The role requires a developer who can work across the complete application stack—from responsive frontend interfaces and reusable React components to backend APIs, database integration, third-party services, debugging, optimization, security, and deployment.

The current Hiya Digital position specifies 2+ years of full-stack development experience, a strong project portfolio, mandatory Next.js, React.js preference, Node.js/Express.js, PHP or Python, REST APIs, MySQL/MongoDB/PostgreSQL, Git, and optional AWS, Docker, and CI/CD experience.

About Hiya Digital Private Limited

Hiya Digital Private Limited is a digital solutions company providing technology services, including:

• Domain registration and management
• Web hosting and cloud hosting
• Business email hosting
• Website design and development
• Digital marketing
• Web security and maintenance

The development team works on websites and web applications for diverse clients, providing exposure to modern web technologies, international projects, and real-world business requirements.

Full Stack Developer Job Overview

As a Full Stack Developer (Next.js), you will be responsible for designing, developing, testing, debugging, optimizing, and maintaining end-to-end web applications.

You will work across both frontend and backend development, including:

• Next.js and React.js development
• JavaScript and modern frontend development
• Responsive UI development
• Server-side programming
• REST API development
• Third-party API integrations
• Database design and optimization
• Authentication and application security
• Performance optimization
• Debugging and troubleshooting
• Git-based development workflows
• Deployment and production support

You will collaborate with UI/UX designers, project managers, developers, and other technical professionals to convert business requirements into scalable web solutions.

Key Responsibilities for a Full Stack Developer

Next.js & React.js Frontend Development

Develop modern, responsive, fast, and user-friendly web applications using Next.js, React.js, HTML5, CSS3, and JavaScript.

Responsibilities include:

• Building reusable React components.
• Developing Next.js applications.
• Creating responsive web interfaces.
• Implementing interactive UI features.
• Converting design specifications into functional interfaces.
• Developing reusable frontend modules.
• Managing application state where required.
• Integrating frontend applications with APIs.
• Optimizing rendering and frontend performance.
• Ensuring cross-browser compatibility.
• Supporting desktop, tablet, and mobile experiences.

Next.js is a mandatory technology for this position.

JavaScript & Modern Frontend Development

Strong knowledge of modern JavaScript is expected.

You should be comfortable with:

• JavaScript ES6+
• Variables, functions, objects, and arrays
• Promises and asynchronous programming
• Fetch/API requests
• DOM fundamentals
• Events
• Modules
• Error handling
• JSON
• Modern browser APIs

Experience with TypeScript is an advantage.

Responsive Web Development

Build interfaces that provide a consistent experience across:

• Desktop computers
• Laptops
• Tablets
• Mobile phones
• Different screen sizes and resolutions

You should understand:

• Responsive layouts
• CSS media queries
• Flexbox
• CSS Grid
• Mobile-first development
• Responsive typography
• Component responsiveness
• Cross-browser compatibility

Backend Development with Node.js

Develop secure and scalable server-side applications using Node.js and Express.js or comparable backend technologies.

Responsibilities include:

• Building backend services.
• Developing RESTful APIs.
• Creating server-side business logic.
• Handling requests and responses.
• Implementing authentication and authorization.
• Validating API input.
• Managing errors.
• Integrating external services.
• Optimizing backend performance.
• Maintaining secure application architecture.

The current Hiya Digital role specifically lists Node.js and Express.js alongside PHP, Python, or similar backend technologies.

REST API Development & Integration

Design, develop, consume, and maintain REST APIs.

You should understand:

• REST architecture
• HTTP methods
• GET, POST, PUT, PATCH, DELETE
• HTTP status codes
• JSON
• Authentication
• Authorization
• API validation
• Error handling
• API security
• Third-party API integration

Experience testing APIs using tools such as Postman is preferred.

Database Development & Management

Work with relational and NoSQL databases to store and retrieve application data.

Relevant database technologies include:

• MySQL
• PostgreSQL
• MongoDB

Responsibilities include:

• Database design.
• Table and collection design.
• Relationships.
• SQL queries.
• CRUD operations.
• Query optimization.
• Indexing.
• Data validation.
• Database security.
• Data integrity.
• Backup and recovery concepts.

The current Hiya Digital job description identifies MySQL, MongoDB, and PostgreSQL as required database technologies.

Full Stack Application Architecture

Contribute to application architecture and technical implementation decisions.

You should be able to:

• Break business requirements into technical tasks.
• Design maintainable application structures.
• Separate frontend and backend responsibilities.
• Create reusable services and components.
• Design API interactions.
• Select appropriate database structures.
• Consider scalability and security.
• Identify potential performance bottlenecks.

Experience designing production-ready web applications is highly valued.

Third-Party API Integration

Integrate web applications with external services and APIs.

Examples may include:

• Payment gateways
• Email services
• Authentication providers
• CRM systems
• Cloud services
• Marketing platforms
• Business APIs
• Social platforms
• Analytics services

You should be comfortable reading API documentation and troubleshooting integration problems.

Authentication & Web Application Security

Build applications with appropriate security practices.

Knowledge of:

• Authentication
• Authorization
• Sessions
• JWT
• Password security
• API authentication
• Input validation
• Secure API design
• CORS
• CSRF concepts
• XSS prevention
• SQL injection prevention
• Secure environment variables
• Dependency security

is preferred.

Security should be considered throughout application development rather than treated only as a final testing step.

Website & Application Performance Optimization

Develop applications that are fast, efficient, and scalable.

Responsibilities may include:

• Optimizing frontend rendering.
• Reducing unnecessary JavaScript.
• Optimizing images and assets.
• Improving API response times.
• Optimizing database queries.
• Implementing caching where appropriate.
• Identifying memory or CPU-intensive operations.
• Reducing unnecessary network requests.
• Monitoring application performance.
• Troubleshooting production performance issues.

The existing role specifically emphasizes performance, scalability, and efficiency across frontend and backend systems.

SEO-Friendly Next.js Development

Because Hiya Digital develops websites and digital products, understanding the relationship between technical development and SEO is valuable.

You should understand:

• Semantic HTML.
• Metadata.
• Page titles.
• Meta descriptions.
• Canonical URLs.
• Structured data fundamentals.
• Search-engine-friendly URLs.
• Server-side rendering.
• Static generation.
• Dynamic rendering.
• Page performance.
• Core Web Vitals.
• Mobile usability.

Experience building SEO-friendly Next.js websites is an advantage.

Debugging & Troubleshooting

Identify, reproduce, diagnose, and resolve technical problems across the application stack.

You may troubleshoot:

• Frontend errors.
• JavaScript errors.
• API failures.
• Database errors.
• Authentication problems.
• Performance issues.
• Deployment failures.
• Third-party integration problems.
• Browser compatibility issues.
• Production application errors.

You should be comfortable using browser Developer Tools, application logs, debugging tools, and server-side diagnostics.

Git & Version Control

Use Git for source-code management and collaborative development.

You should understand:

• Git repositories
• Branching
• Commits
• Pull requests
• Merging
• Rebasing fundamentals
• Conflict resolution
• Code review
• Remote repositories

Experience with GitHub or GitLab is preferred.

DevOps, Cloud & Deployment

Knowledge of deployment and infrastructure is an advantage for this full-stack role.

Preferred skills include:

• AWS or another cloud platform.
• Docker.
• CI/CD pipelines.
• Application deployment.
• Environment configuration.
• Production monitoring.
• Server logs.
• Deployment troubleshooting.
• Cloud-based application hosting.

The existing Hiya Digital role identifies AWS/cloud platforms, Docker, CI/CD, Postman, VS Code, and debugging tools as preferred skills.

Full Stack Development Workflow

You will participate in the complete development lifecycle:

1. Understand business and technical requirements.
2. Break requirements into development tasks.
3. Plan application architecture.
4. Develop frontend interfaces.
5. Develop backend services and APIs.
6. Design database structures.
7. Integrate third-party services.
8. Test functionality.
9. Debug and optimize code.
10. Participate in code reviews.
11. Deploy applications.
12. Monitor and maintain production systems.

Collaboration & Project Delivery

Work closely with:

• UI/UX designers.
• Website designers.
• Frontend developers.
• Backend developers.
• Project managers.
• SEO specialists.
• Digital marketing professionals.
• Clients and stakeholders.

Responsibilities include:

• Translating requirements into technical solutions.
• Estimating development tasks.
• Communicating technical constraints.
• Participating in technical discussions.
• Reviewing code.
• Providing development updates.
• Meeting project deadlines.
• Maintaining development quality.

The current role explicitly emphasizes collaboration with UI/UX designers, project managers, developers, and clients.

Required Full Stack Developer Skills

Frontend Skills

• Next.js — Mandatory
• React.js
• JavaScript ES6+
• HTML5
• CSS3
• Responsive web development
• UI development
• Frontend performance optimization

Backend Skills

• Node.js
• Express.js
• REST API development
• Server-side programming
• PHP, Python, or similar backend technology
• API integration

Database Skills

• MySQL
• PostgreSQL
• MongoDB
• SQL
• Database design
• Query optimization

Development Tools

• Git
• GitHub/GitLab
• VS Code
• Postman
• Browser Developer Tools
• Debugging tools

Preferred DevOps Skills

• AWS
• Docker
• CI/CD
• Cloud deployment
• Production monitoring

These skills closely reflect the current Hiya Digital technology stack for the position.

Strong Technical Skills We Look For

The strongest candidates should demonstrate practical knowledge rather than only theoretical familiarity.

Next.js

• App architecture.
• Routing.
• Server-side rendering concepts.
• Static generation.
• Dynamic pages.
• API integration.
• Performance optimization.
• SEO implementation.

React.js

• Functional components.
• Props and state.
• Hooks.
• Reusable components.
• Component architecture.
• API integration.
• Performance optimization.

Node.js

• REST APIs.
• Express.js.
• Middleware.
• Authentication.
• Error handling.
• Asynchronous programming.
• External integrations.

Databases

• Relational database design.
• SQL queries.
• CRUD operations.
• Indexing.
• Query optimization.
• MongoDB fundamentals.

Code Quality & Engineering Practices

Write code that is:

• Clean.
• Maintainable.
• Reusable.
• Secure.
• Scalable.
• Well structured.
• Properly documented.
• Testable.

Follow appropriate development practices for naming, component structure, error handling, source-code management, and technical documentation.

Testing & Quality Assurance

Participate in application testing before and after deployment.

Testing may include:

• Functional testing.
• API testing.
• Integration testing.
• Responsive testing.
• Browser testing.
• Regression testing.
• Error handling.
• Performance testing.

Experience with automated testing frameworks is an advantage.

Required Qualifications

Education

A Bachelor’s degree in one of the following is preferred:

• Computer Science
• Information Technology
• Software Engineering
• Computer Engineering
• A related technical field

The existing Hiya Digital position specifically lists a Bachelor’s degree in Computer Science, Information Technology, Software Engineering, or a related field.

Professional Experience

• Minimum 2+ years of professional full-stack development experience.
• Strong experience developing web applications.
• Mandatory hands-on Next.js experience.
• Practical React.js knowledge.
• Strong JavaScript fundamentals.
• Backend development experience.
• REST API development experience.
• Database development experience.
• Git/version-control experience.
• Strong debugging and problem-solving skills.
• Portfolio or demonstrable examples of web application development.

Preferred Qualifications

Candidates with the following experience will have an advantage:

• TypeScript.
• Advanced Next.js.
• React.js.
• Node.js/Express.js.
• PostgreSQL.
• MySQL.
• MongoDB.
• AWS.
• Docker.
• CI/CD.
• Automated testing.
• Tailwind CSS.
• Authentication systems.
• Payment gateway integrations.
• Third-party API integrations.
• SEO-friendly web development.
• Core Web Vitals optimization.
• Production application monitoring.

Full Stack Developer Portfolio Requirements

A strong portfolio, GitHub profile, or demonstrable project history is highly desirable.

Your portfolio should ideally demonstrate:

• Full-stack web applications.
• Next.js projects.
• React applications.
• REST API integrations.
• Database-driven applications.
• Authentication or user-management systems.
• Responsive interfaces.
• Production or deployed projects.
• Third-party API integrations.

For each significant project, be prepared to explain:

• Your role.
• Technology stack.
• Architecture.
• Frontend implementation.
• Backend implementation.
• Database design.
• APIs used.
• Technical challenges.
• Performance improvements.
• Deployment process.

The current Hiya Digital application specifically requests an updated resume, relevant cover letter, and portfolio/GitHub profile.

Ideal Full Stack Developer Candidate

The ideal candidate is:

• Strong in Next.js.
• Comfortable with React.js.
• Strong in JavaScript.
• Capable of handling both frontend and backend development.
• Experienced with REST APIs.
• Comfortable with relational and NoSQL databases.
• Strong in debugging and problem solving.
• Familiar with Git workflows.
• Focused on clean and maintainable code.
• Conscious of security and performance.
• Comfortable learning new technologies.
• Able to work independently when required.
• Comfortable collaborating with designers and other developers.
• Able to convert business requirements into practical technical solutions.

Practical Full Stack Developer Assessment

Shortlisted candidates may be asked to complete a technical assessment covering areas such as:

Next.js Development

Build a responsive Next.js page using a supplied design or functional specification.

Assessment may evaluate:

• Component structure.
• Routing.
• API integration.
• Responsive design.
• Code quality.
• Performance.
• SEO fundamentals.

REST API Development

Create or integrate an API that performs basic CRUD operations and handles:

• Validation.
• Authentication.
• Errors.
• Database interaction.
• JSON responses.

Database Task

Design a database structure for a sample business application and demonstrate appropriate queries, relationships, and indexing considerations.

Debugging Task

Identify and resolve issues in an existing full-stack application, such as:

• Slow API response.
• Database query inefficiency.
• Frontend rendering issue.
• JavaScript error.
• Authentication failure.
• Mobile responsiveness problem.

Performance Expectations

Performance may be evaluated based on:

• Code quality.
• Development accuracy.
• Application performance.
• Scalability.
• Security.
• Bug resolution.
• Project delivery.
• API reliability.
• Database efficiency.
• Frontend performance.
• Code maintainability.
• Collaboration and communication.

Why Join Hiya Digital?

As a Full Stack Developer in Mumbai, you will work on modern web applications using Next.js, Node.js, React.js, APIs, databases, and related technologies.

Hiya Digital highlights exposure to real-world and enterprise-level projects, modern technology stacks, collaboration with designers and developers, continuous learning, and recognition for technical performance and innovation.

You will have opportunities to:

• Work with modern Next.js applications.
• Develop both frontend and backend systems.
• Build scalable web solutions.
• Work on real business requirements.
• Collaborate with experienced technical professionals.
• Expand your cloud and DevOps knowledge.
• Improve application performance and security.
• Work with diverse international projects.

Job Details

Job Title: Full Stack Developer (Next.js)
Location: Chembur, Mumbai, Maharashtra, India
Employment Type: Full-Time
Experience: 2+ Years
Department: Design & Development
Work Mode: Work From Office

How to Apply for Full Stack Developer Jobs in Mumbai

Candidates interested in Full Stack Developer Jobs in Mumbai at Hiya Digital should email their application to:

hr@hiya.digital

Include:

• Updated resume.
• Cover letter highlighting relevant full-stack experience.
• Portfolio or GitHub profile.
• Details of Next.js and React.js projects.
• Backend and database experience.
• Relevant certifications, if applicable.

Suggested Email Subject: Application for Full Stack Developer (Next.js) – [Your Name]

Please provide accurate details of your technical skills, professional experience, education, current location, and relevant development projects. The current Hiya Digital application instructions request these details and indicate that only shortlisted candidates will proceed further.