
Full Stack Developer Internship
HSR Hi-Tech Solutions
KolkataFresher1h agovia Unstop
This job at a glance
- Who can apply
- Freshers and up to 1 year
- Must know
- JavaScriptMongoDBReactNext.jsNode.jsExpress
- Nice to have
- TypeScriptREST APIsGitAWS
- Work
- On-site in Kolkata · internship
- Pay
- ₹7,500–12,000/month
- Skill demand
- JavaScript75%React60%MongoDB32%Next.js23%of 111 similar fresher jobs posted in India this week
- Listed
- 31 Oct 2026 · still open
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Key Responsibilities
- Design, develop, test, and maintain modern, responsive, scalable web applications using the MERN stack (MongoDB, Express.js, React.js, Node.js) and Next.js.
- Build intuitive, responsive, and performance-oriented user interfaces using React.js, Next.js, JavaScript, TypeScript, HTML5, CSS3, and modern UI frameworks.
- Develop robust backend services, RESTful APIs, server-side logic, authentication systems, and database integrations.
- Work on real-world SaaS platforms, ERP systems, business automation tools, dashboards, and customer-facing web applications.
- Contribute to application architecture, reusable components, database schema design, API structures, and scalable development practices.
- Identify bugs, troubleshoot application issues, optimize performance, and implement effective technical solutions.
- Take ownership of assigned features, from understanding requirements and planning implementation to development, testing, and deployment.
- Build reusable, modular, and maintainable frontend components.
- Develop responsive user interfaces compatible with desktops, tablets, and mobile devices.
- Create, integrate, and maintain RESTful APIs and backend services.
- Implement user authentication, authorization, role-based access control (RBAC), and secure session management.
- Design and manage MongoDB databases, collections, schemas, indexing, and data relationships.
- Integrate third-party APIs, payment gateways, cloud services, and external platforms.
- Work with React hooks, Context API, state management solutions, and modern frontend development practices.
- Implement Server-Side Rendering (SSR), Static Site Generation (SSG), and other Next.js capabilities.
- Write clean, reusable, well-documented, and optimized code following industry standards.
- Debug applications, resolve technical issues, and conduct functional testing.
- Work with Git and GitHub for version control, branching, pull requests, and collaborative development.
- Assist in deploying applications and managing development, staging, and production environments.
- Collaborate with UI/UX designers, project managers, and other developers to convert requirements into functional products.
- Participate in technical discussions, code reviews, sprint planning, and product improvement activities.
- Maintain development documentation and provide regular updates on assigned tasks.
- Research and implement new technologies that improve product quality and development efficiency.
Requirements & Tech Stack
- Strong understanding of JavaScript (ES6+) and modern web development fundamentals.
- Working knowledge of the MERN stack:
- MongoDB – Database management and queries.
- Express.js – Backend development and API creation.
- React.js – Component-based frontend development.
- Node.js – Server-side development.
- Practical knowledge of Next.js and its application architecture.
- Good understanding of HTML5, CSS3, responsive design, and modern frontend development.
- Experience with REST APIs, JSON, HTTP methods, and API integration.
- Understanding of database design, CRUD operations, and data validation.
- Familiarity with Git, GitHub, and collaborative development workflows.
- Understanding of authentication, authorization, and application security fundamentals.
- Ability to debug code, troubleshoot errors, and independently solve technical problems.
Preferred Technical Skills (Bonus)
- Cloud Platforms: AWS, Google Cloud Platform (GCP), Firebase.
- Backend & Frameworks: Laravel, PHP, Python.
- Frontend Technologies: TypeScript, Tailwind CSS, Ant Design, Redux Toolkit.
- Database Technologies: Firebase Firestore, MySQL, PostgreSQL, Redis.
- DevOps & Deployment: Docker, CI/CD, Nginx, Linux, Vercel, Railway, AWS deployment.
- Cloud & Server Management: Cloud hosting, storage buckets, server configuration, domain management, and environment configuration.
- Additional Integrations: Razorpay, payment gateways, email services, notification systems, and third-party APIs.
What We Expect From You
- A strong passion for software development and building real-world products.
- Ability to learn new technologies quickly and adapt to changing project requirements.
- A problem-solving mindset with attention to detail.
- Ability to work independently and take ownership of assigned tasks.
- Willingness to explore, experiment, and implement new technical solutions.
- Strong communication skills and the ability to collaborate with a development team.
- A commitment to writing quality code.
- Comfortable working in a fast-paced startup environment where responsibilities may evolve.
- Willingness to work on live projects with actual business requirements and deadlines.
Preferred Candidate Profile
- Candidates who have developed at least one complete full-stack web application.
- Candidates with personal projects, GitHub repositories, deployed applications, or previous internship experience.
- Candidates who understand the complete development lifecycle, from frontend implementation to backend deployment.
- Candidates who can explain their code, technical decisions, and project architecture.