Full-stack Developer at Lemon Yellow · Thane, Maharashtra, Mumbai · 1 - 2 years · ₹4L - ₹5L / yr · Bootstrapped · Posted 13 Jan 2026

When life gives you lemons and you can code both front and back with equal zest, you’re probably a Full Stack Developer we’d love on our team.
At Lemon Yellow, we’re looking for someone who thrives on building end-to-end web solutions using the MERN stack. From crafting intuitive front-ends to developing efficient, scalable back-end systems, you’ll be involved in shaping digital products from the ground up. If turning design mockups into pixel-perfect, high-performance applications excites you, we’re ready to build with you.
1. Core Responsibilities
- Build and maintain end-to-end web applications using the MERN stack.
- Act as a bridge between design and development to bring ideas to life with clean, scalable code.
- Support digital campaigns through intuitive and functional tech implementations.
- Design, develop, and deploy scalable front-end and back-end components.
- Write clean, maintainable code while collaborating with designers, marketers, and other developers.
- Translate product requirements and UI/UX wireframes into fully functional digital solutions.
2. API & Integration Management
- Implement RESTful APIs and connect third-party tools and services.
- Ensure smooth data exchange across platforms through secure integrations.
- Manage user authentication and authorization using mechanisms like JWT or OAuth.
3. Code Quality & Optimization
- Debug, profile, and optimize applications for performance and reliability.
- Maintain unit and integration test coverage for code robustness.
- Conduct code reviews and help improve internal coding standards.
4. Agile Collaboration
- Actively participate in agile activities: daily stand-ups, sprint planning, retros, and demos.
- Contribute to task estimation and cross-functional problem-solving.
- Stay responsive to project shifts and quick delivery needs.
5. Continuous Learning & Innovation
- Stay up to date with the latest development trends, tools, and practices.
- Share learnings and explore creative solutions for technical challenges.
- Experiment with emerging technologies and suggest process improvements.
Requirements
- Bachelor's degree in Computer Science, Software Engineering, or a related field.
- Minimum 1 year of hands-on experience building production-ready web applications using MongoDB, Express.js, React.js, and Node.js.
- Strong command of JavaScript (ES6+), HTML5, and CSS3.
- Experience with Git and version control systems
- Familiarity with RESTful API design, JSON, and authentication mechanisms (JWT, OAuth)
- Familiarity with cloud platforms (AWS, Azure, or GCP) and containerization (Docker).
- Basic understanding of CI/CD pipelines and automated testing.
- Strong analytical and problem-solving mindset.
- Detail-oriented with a passion for clean, maintainable code.
- Collaborative attitude with good verbal and written communication skills.
What are we offering?
Experience
- A chance for you to work in a thriving and growing environment. We foster a culture where growth is harmonious and creativity is always appreciated - you grow and you encourage others to do the same.
Exposure
- If you believe in your work, we believe in you. If you think your designs have the power to change the world, we'll help you bring your vision to life and give you the platform to prove it.
Empathy
- We have a carefully curated culture that promotes 2 things: fun & fulfilment. Your welfare - personal, professional, mental, and physical - becomes our responsibility. From Fitness Thursdays to learning sessions, we try to make you laugh & learn.
Who are we?
Lemon Yellow LLP is a user-centered UI/UX design agency, based out of Thane, Maharashtra. With international operations, an experienced mentorship, and a passionate team, we aim to design digital happiness.
How do you reach us?
Well, after you send in your application, it takes us 2-3 weeks to review it. Sometimes, not often, we might delay just a bit beyond that. This happens when our mailbox is flooded with applications.
We promise we won’t ghost you, you’ll definitely hear from us. In the meantime, feel free to explore our official website.

About Lemon Yellow
About
We're a global digital design agency from India, focusing on product strategy, user experience design, user interface and creative thinking. We are passionate about designing new products, delighting users and help companies improve their business. - Lemon Yellow .
Connect with the team
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Role Overview
We are looking for a MERN / MEAN Full Stack Developer to develop and maintain modern web applications.
The candidate should be comfortable working on both frontend and backend components and collaborating closely with cross-functional teams.
Key Responsibilities
Design, develop, and maintain full-stack web applications using MERN or MEAN stack
Build responsive and user-friendly frontend interfaces
Develop secure, scalable backend APIs and services
Work with databases to design efficient schemas and queries
Integrate third-party services and internal systems
Write clean, reusable, and well-tested code
Participate in code reviews and team discussions
Debug and resolve application issues across the stack
Required Skills & Experience
2+ years of hands-on experience in MERN or MEAN stack development
Strong experience with JavaScript / TypeScript
Proficiency in React.js or Angular
Experience with Node.js and Express.js
Hands-on experience with MongoDB (and/or other databases)
Strong understanding of REST APIs
Experience using Git for version control Good to Have (Preferred Skills)
Exposure to Next.js or modern frontend frameworks
Knowledge of authentication, authorization, and security best practices
Experience with cloud platforms (Azure / AWS)
Familiarity with CI/CD pipelines
Exposure in Rust Framework and development using Tauri.app.
The recruiter has not been active on this job recently. You may apply but please expect a delayed response.
What we need:
• Experience in both Web + Mobile development
• Strong understanding of APIs & system design
• Ability to build end-to-end features
· Maintain version control and documentation using Git / GitHub.
Roles and Responsibilities
- Design and develop responsive web applications using React.js / Next.js.
- Build and maintain scalable RESTful APIs using Node.js and Express.js.
- Implement user authentication and authorization using JWT / OAuth2.
- Manage and optimize database structures using MongoDB or MySQL.
- Integrate front-end and back-end components seamlessly for smooth user experience.
- Collaborate with UI/UX designers and product teams to deliver high-quality features.
- Participate in Agile / Scrum sprints, daily stand-ups, and code reviews.
- Optimize applications for speed, performance, and security.
- Maintain version control and documentation using Git / GitHub.
Troubleshoot and debug production issues efficiently.
Job Location- Bangalore,
Candidates from Tamil Nadu willing to relocate to Bangalore can also apply.
Responsibilities:
* Collaborate with cross-functional teams on project requirements and deliverables
* Develop user interfaces using React.JS and Express API's
* Implement database solutions with MongoDB and Node.JS
The recruiter has not been active on this job recently. You may apply but please expect a delayed response.
Position: Full Stack Developer (React.js + Node.js)
Experience: 2–5 Years
Location: Mumbai – Chembur West (Onsite)
Job Summary
We are looking for a Full Stack Developer with strong hands-on experience in React.js and Node.js to build scalable, secure, and high-performance web applications. The ideal candidate should be comfortable owning features end-to-end, developing responsive UI, building REST APIs, integrating databases, and supporting production systems.
Key Responsibilities
- Build responsive UI using React.js, HTML5, CSS3, JavaScript (ES6+)
- Develop scalable backend services and RESTful APIs using Node.js (Express.js / NestJS)
- Work with MongoDB and MySQL (schema design, indexing, query optimization)
- Implement authentication & authorization using JWT , RBAC , Oauth
- Integrate third-party APIs, Webhooks
- Build real-time features using Socket.io / WebSockets
- Ensure performance, scalability, and security (validation, sanitization)
- Implement caching using Redis (if applicable) and optimize API response times
- Support API testing (Postman/Supertest)
- Maintain API documentation using Swagger / OpenAPI
- Debug and resolve defects, handle RCA, and support production troubleshooting with logs/monitoring
- Follow Git-based workflows, participate in code reviews, and collaborate with QA/product teams in Agile delivery
Mandatory Skills
- React.js, Node.js, JavaScript (ES6+)
- MongoDB (must), MySQL
- REST API development & integration
- Socket.io / WebSockets, Webhooks
- HTML5, CSS3
- Git
- Typescript, Express.js / NestJS
- jQuery / AJAX (basic / legacy support)
Good to Have
- Redis, Swagger/OpenAPI
- Docker, CI/CD (GitHub Actions/Jenkins)
- Cloud exposure (AWS/Azure/GCP)
Qualification
BE / BTech / MCA / MSc IT / BSc IT with 2–5 years relevant experience.
CTC: As per industry std.
About AimInfologics
AimInfologics is a software development company based in Gujarat, India. We build mobile apps, web platforms, SaaS products, AI integrations, automation systems, and custom software solutions for clients in India and international markets.
We are looking for a Full Stack Developer who has strong hands-on experience with Node.js and Next.js and can work on real client projects with ownership.
Role: Full Stack Developer – Node.js & Next.js
Job Type: Full-time
Location: Ahmedabad, Gujarat / On-site
Experience: 2–5 years preferred
Salary: As per experience and practical skill level
Role Description :
The selected developer will work on web applications, admin panels, APIs, SaaS platforms, CRM systems, dashboards, and AI-integrated software products.
This role is suitable for someone who can handle both frontend and backend work, understand requirements properly, write clean code, debug issues, and deliver features with proper quality.
We are not looking for someone who only knows basic tutorials. We need someone who has worked on real projects and can take responsibility for modules independently.
Key Responsibilities
• Develop and maintain web applications using Next.js
• Build backend APIs using Node.js and Express.js
• Work with MongoDB and database-driven application logic
• Create clean, responsive, and user-friendly frontend screens
• Integrate third-party APIs, payment gateways, AI APIs, CRM tools, and cloud services when required
• Write clean, reusable, and maintainable code
• Debug bugs, performance issues, and production-level problems
• Coordinate with UI/UX designers, backend developers, mobile developers, and project managers
• Understand client requirements and convert them into working features
• Use Git properly for code management and team collaboration
• Deploy or support deployment on platforms such as Vercel, AWS, or similar environments
Required Skills
• Strong experience with Node.js
• Strong experience with Next.js and React.js
• Good knowledge of JavaScript and TypeScript
• Experience with MongoDB and database design basics
• Good understanding of REST APIs
• Experience with Express.js or similar backend frameworks
• Ability to integrate third-party APIs
• Good understanding of authentication, authorization, JWT, roles, and permissions
• Basic understanding of cloud deployment, Vercel, AWS, Nginx, or PM2 is a plus
• Good debugging and problem-solving skills
• Ability to write clean and structured code
• Basic understanding of UI/UX and responsive design
• Good communication and team coordination skills
Good to Have
• Experience with AI API integrations such as OpenAI or similar tools
• Experience with payment gateways
• Experience with SaaS, CRM, ERP, dashboards, or admin panel development
• Experience with server deployment and production issue handling
• Experience working with international client projects
Who Should Apply
Apply only if you are serious about full-time work and can take ownership of development tasks.
This role is best for someone who wants to grow as a strong full stack developer and work on real business applications, SaaS products, AI-based systems, and international client projects.
Hiring Process
- Profile screening
- Technical interview
- Practical task / code review
- Final discussion
While applying, please mention:
• Your total experience
• Projects you have worked on using Node.js and Next.js
• Current salary
• Expected salary
• Notice period
• GitHub / portfolio link, if available
Aarohan Agri Products Pvt. Ltd.
We are looking for a passionate Entry-Level Full Stack Developer (MERN Stack) to join our team. Freshers and candidates with up to 1 year of experience are welcome to apply.
About the Job -
We have always been in the spotlight for being adeptin “the next big technologies”. What we can offer you is a space to explore varied technologies and quench your techie soul. We are looking for Developer skilled in technologieslike Node.js and AWS who also holds experience with user-interface design.
Responsibilities: ● The full stack developer will be responsible for design and development of scalable and flexible web applications and creating API to connect to databases and applications from back-end to client-side code, using optimal and efficient technologies, frameworks, and patterns.
● Take responsibility for design, implementation and maintain existing development ecosystem, including bugs – fixing, design and develop new custom components to meet project requirements.
● Working with other developers and software engineers to develop front-end and back-end architecture that's well-structured and flexible, along with the APIs to support it.
● Install and configure server environments for React deployments maintain and update project dependencies as well as fix any conflicts.
● Responsible for regular communication with developer team involved in the development process and testing of new features in the application
● Analyzing requirements and designing new functionality for new projects with cutting edge technology with research on optimization and new features for the existing product by ensuring a required level of performance.
● Candidate must be abreast with latest technologies and trends, relevant standards should be able to work effectively in a multidisciplinary, multinational team environment focused on innovation with comfortable working on a range of problems.
Desired Competencies(Technical/Behavioral Competency) – Must Have-
● Nodejs, MongoDB, Socket.IO and Redis.
● Proficient in Node.js and MongoDB and working knowledge of JavaScript, JQuery, HTML, CSS, frameworks (Angular.js, React.js)
● Experience with Unix/Linux or Windows and/or Mac environments, distributed systems
● Excellent practical knowledge of OOP concepts and SOLID principles ● Microservices and agile development
● Hands-on experience with cloud (AWS) development/hosting.
● Experience with Web services development (SOAP, REST)
● Strong in Object Oriented Programming, MVC, Design patterns and SOLID principles.
Skills Required:
- Node.js
- MongoDB
- Angular
- API optimization
- Micro Services
- Multi threading
- Socket.io
About Vijay Sales
Vijay Sales is a consumer electronics and appliances retailer, selling through its stores across India, its website and its app.
Our technology team builds the software the business runs on: order management, customer support automation over WhatsApp, reviews and ratings, and the dashboards our operations teams use every day.
The role
We are hiring full stack engineers who can take a feature from spec to production across React, Node.js and MongoDB.
You will work on customer-facing and internal products, often both in the same week. One sprint may be a review submission page used by customers on their phones. The next may be an API that pulls order status from our order management system for the support bot.
We are looking for engineers with 3 to 6 years of experience who are comfortable owning both the front end and the back end of what they ship.
What you'll do
- Build responsive, mobile-first interfaces in React using our in-house UI component libraries.
- Design and build REST APIs and background services in Node.js.
- Model data in MongoDB and keep queries fast as collections grow.
- Integrate with the systems the business runs on: order management, ERP, point of sale and ticketing.
- Build messaging flows over WhatsApp, email and SMS, including delivery tracking, retries and fallbacks.
- Work with the conversational AI team to expose order, invoice and support actions to the customer support bot.
- Write tests, review code and own your features in production, including monitoring and fixing what breaks.
- Work directly with product and operations teams to turn a business problem into a working release.
Our stack
React, Node.js and MongoDB are the core. Everything else in the table is what you will connect to or build alongside.
- Front end: React, with Vijay Sales' in-house UI component libraries
- Back end: Node.js services and REST APIs
- Database: MongoDB
- Messaging: WhatsApp Business, Amazon SES for email, RCS and SMS as fallback
- Conversational AI: LangChain and Rasa, behind the customer support bot
- Business systems: Order management (OMS), ERP, POS, Ticketing Systems
What we're looking for
- 3 to 6 years of professional experience building and shipping web applications.
- Strong JavaScript and TypeScript fundamentals: async patterns, the event loop, modules, error handling.
- Solid React skills: hooks, state management, component design, performance on low-end mobile devices.
- Hands-on Node.js experience: building REST APIs, authentication with JWT, role-based access, input validation.
- Working knowledge of MongoDB: schema design, indexing, aggregation pipelines.
- Experience integrating third-party APIs and webhooks, and handling their failures gracefully.
- Comfort with Git, code review, automated tests and CI/CD.
- Clear written and spoken communication. You will talk to operations and business teams, not only engineers.
Nice to have
- Experience with the WhatsApp Business API, Gupshup or similar messaging platforms.
- Exposure to LLM application development: LangChain, retrieval, tool calling, or bot frameworks such as Rasa.
- Background in retail, e-commerce or order management systems.
- Experience integrating with ERP or POS systems.
- Familiarity with AWS, Redis and message queues.
- React Native or other mobile app experience.
Why join and how to apply
- Your work reaches real customers and store teams quickly. There is very little distance between a release and the people who use it.
- You own features end to end, from the first conversation with the business team to production.
- You get hands-on exposure to conversational AI and LLM-based products alongside core full stack work.
About the Role
Octalbees is looking for a MERN Stack Developer Intern to join our development team and work on practical, industry-oriented web development projects.
What You'll Work On
- Build and improve web applications using MongoDB, Express.js, React.js, and Node.js
- Develop responsive and user-friendly frontend interfaces
- Build and integrate REST APIs
- Work with databases, authentication, and backend services
- Debug, test, and optimize applications
- Collaborate with the team and follow professional development workflows
- Contribute to real-world projects and features
What We're Looking For
- Basic to good understanding of the MERN stack
- Knowledge of JavaScript, React.js, Node.js, Express.js and MongoDB
- Understanding of REST APIs and Git/GitHub
- Good problem-solving and communication skills
- Willingness to learn, take feedback, and work on practical projects
What You'll Get
- Hands-on experience with industry-oriented projects
- Mentorship and guidance
- Exposure to professional development workflows
- Internship certificate and project experience
- Performance-based stipend from the second month for eligible interns
- PPO opportunity for candidates who demonstrate strong performance and contribution
Internship Details
- Mode: Remote
- Type: Internship
- Commitment: Part-time / flexible
- Candidates who perform well may have opportunities for continued engagement with Octalbees.
Important: Stipend and PPO are performance-based and are not guaranteed for every intern.
To Apply: Submit your application through Wellfound with your updated resume/GitHub/portfolio.
Javascript, Callback, Async, Promise, Experience in writing restful APIs, Javascript, Nodejs, ReactJs, MySQL.
Immediate Joiner
Company Description
TopGrep Tech, an ISO 27001:2022 and DPIIT-certified IT pure tech product & services company. We work with global enterprises & startups, covering SaaS, MVPs, AI, RAG, MCP, reliability engineering, DevOps, and cloud innovation.
Role Description
This is a full-time on-site role located in the Greater Bengaluru Area for a Full Stack Engineer. The Full Stack Engineer will design, build, and maintain both front-end and back-end components of web applications. Candidates must demonstrate independent coding ability. Generative AI tools, AI coding assistants, and vibe-coding tools are not permitted during coding interview rounds. They will collaborate with cross-functional teams to deliver high-quality software solutions, ensure efficient system performance, and troubleshoot and resolve bugs and technical issues. This role also involves optimizing applications for maximum speed and scalability while following best practices and coding standards.
Qualifications
- Experience with Back-End Web Development, including server-side programming, APIs and database management
- Proficiency in Front-End Development, including JavaScript & Reactjs frameworks
- Strong foundation in Software Development and Full-Stack Development
- Ability to write, optimize, and debug code
- Excellent problem-solving and communication skills
- Familiarity with version control systems such as Git
- Experience with cloud platforms
- Bachelor's Engineering or Masters degree in Computer Science with equivalent practical experience
Requirements added by the job poster
• Bachelor's Degree
• Commute to this job’s location
• 1+ years of work experience with JavaScript Frameworks
• Working in an onsite setting
• 1+ years of Software Development experience






