MERN STACK SENIOR DEVELOPER

🚀Urgent Hiring : MERN Stack Developer

Location : Gurgaon

Work Mode : Work From Office (5 Days a Week)

Experience : 3 to 6 Years

Joining : Immediate Joiners Preferred

Job Description :

We are looking for a skilled and enthusiastic MERN Stack Developer to join our growing team in Gurgaon.

The ideal candidate will be responsible for developing robust web applications using MongoDB, Express.js, React.js, and Node.js.

You will work on both front-end and back-end components, ensuring high performance and responsiveness.

Key Responsibilities :

• Design, develop, and maintain scalable web applications using the MERN stack.
• Collaborate with UI/UX designers and backend developers to implement features.
• Write clean, modular, and reusable code.
• Integrate RESTful APIs and third-party services.
• Optimize applications for speed and scalability.
• Participate in code reviews, testing, and bug fixing.
• Manage version control using Git.

Required Skills :

• Strong proficiency in MongoDB, Express.js, React.js, and Node.js.
• Good understanding of JavaScript ES6+, HTML5, CSS3.
• Experience with Redux, React Hooks, and modern React ecosystem.
• Familiarity with RESTful APIs and JSON data exchange.
• Knowledge of Agile/Scrum methodologies.
• Experience with Git and version control tools.

Good to Have:

• Knowledge of TypeScript and Next.js.
• Experience with CI/CD pipelines and cloud services (AWS/Azure).
• Familiarity with unit testing frameworks like Jest or Mocha.

We are looking for aSenior Full Stack Developerwith strong expertise inJavaScript/TypeScriptand hands-on experience acrossmodern frontend and backend technologies. The ideal candidate should be comfortable building scalable, high-performance web applications and collaborating closely with product, design, and engineering teams.

Key Responsibilities

• Design, develop, and maintainscalable full-stack web applications.
• Build responsive and performantfrontend applications using React.js.
• Develop and maintainbackend services using Node.js and Express.js.
• Design and optimizeSQL and NoSQL databasesto ensure data integrity and performance.
• Build, consume, and documentRESTful APIs(GraphQL exposure is a plus).
• Write clean, maintainable, and testable code following best practices.
• Participate incode reviews, branching strategies, and release processes.
• Collaborate with cross-functional teams to translate requirements into technical solutions.
• Ensure application performance, security, and scalability.
• Contribute to CI/CD pipelines and deployment processes.

Required Technical Skills

• Strong experience withJavaScript and TypeScript.
• Expertise inReact.js, includingHooks, Context API, and state management (Redux / Zustand preferred).
• Solid backend development experience withNode.js and Express.js.
• Hands-on experience with either:
• PostgreSQL(PERN stack)
• MongoDB(MERN stack)
• Strong understanding ofSQL and NoSQL database design principles.
• Experience in building and consumingREST APIs.
• Basic knowledge ofGraphQLis a plus.
• Familiarity withORMs/ODMssuch asSequelize, Prisma, or Mongoose.
• Proficiency withGit, branching strategies, and code review practices.
• Understanding ofDocker,CI/CD pipelines, and cloud platforms (AWS).

Nice to Have

• Experience working withNext.js.
• Exposure tomicroservices architecture.
• Knowledge ofmessage queuessuch asKafka or RabbitMQ.
• Experience building or maintaininghigh-scale or multi-tenant systems.

Soft Skills

• Strong problem-solving and analytical skills.
• Good communication and collaboration abilities.
• Ability to take ownership and work independently.
• Adaptable and eager to learn new technologies.

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.

• Efficiently realize the UI/UX needs and deliver excellent front-end features.
  
• Maintain quality of our SAAS platform and ensure responsiveness of applications/cloud-run services.
  
• Collaborate with the rest of the teams to design and launch additional/new features and services.
  
• Develop and maintain the source codes.
  
• Optimize and stabilize the overall service architecture (front) from both engineering and commercial point of view.

• Should be highly skilled in the MERN (MongoDB, Express, React, Node)stack.
  
• Should have knowledge of different React Hooks, and should be able to develop custom hooks.
  
• Should have an understanding of making good-looking plots, an understanding of D3.js is preferred.

Designation: Junior C/C++ Developer

Qualification: - MSc in Computer Science / Btech in CSc. or IT

Job Responsibilities:

·        Strong C/C++ programming skills

·        Strong Shell Scripting skills

·        Strong debugging skills using debuggers like GDB

·        Debug and resolve issues in existing codebase, identifying and fixing bugs to ensure the stability and performance of the software.

·        Familiarity with Linux programming environment.

***Immediate joiners preffered***

About The Company
Vested is a cross-border wealth platform on a mission to enable local investors to go global. Our first step is to empower retail investors from India with access to the US stock market. Vested provides a low cost and easy-to-use platform that includes knowledge and insights to help clients make smart investment decisions.

Job Description
We are looking for a full stack developer interested in building high performance web app and company page. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. You will ensure that these components and the overall application are robust and easy to maintain. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

Skills

• Firm grasp of the JavaScript, React.js, and Node.js
• Experience with popular React.js workflows (Redux)
• Ability to write well-documented, clean Javascript code
• Rock solid at working with third-party dependencies and debugging dependency conflicts
• Familiarity with native build tools, like Android Studio, XCode, and Gradle
• Understanding of REST APIs, the document request model, and offline storage
• Familiarity with SQL databases
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools (Git).

Technical expertise necessary:

• 2+ years of experience on the Node.js
• 2+ years of experience with popular React.js, workflows (Redux), and Express.js
• 2+ years of experience with SQL databases
• 1+ years of experience with AWS and Redis
• Experience creating charts and graphs
• Deep understanding of RESTful APIs
• Experience deploying and maintaining a micro-service architecture
• Experience with server-less infrastructure paradigms (AWS Lambda, etc).
• Experience building a scalable product is a bonus!

Our perfect candidate is someone that:

• is proactive and an independent problem solver
• is a constant learner. We are a fast growing start-up. We want you to grow with us!
• is a team player and good communicator

We are looking for a highly capable Node.js developer to optimize our web-based application performance. You will be collaborating with our front-end application developers, designing back-end components, and integrating data storage and protection solutions.

To ensure success as a Node.js developer, you should possess extensive knowledge of Node.Js based services and experience in a similar role. An accomplished Node.js developer will be someone whose expertise results in the stable, fast, and secure exchange of data between servers and end-users.

Node.js Developer Responsibilities:

• Developing and maintaining all server-side network components.

• Ensuring optimal performance of the central database and responsiveness to front-end requests.

• Collaborating with front-end developers on the integration of elements.

• Designing customer-facing UI and back-end services for various business processes.

• Developing high-performance applications by writing testable, reusable, and efficient code.

• Implementing effective security protocols, data protection measures, and storage solutions.

• Running diagnostic tests, repairing defects, and providing technical support.

• Documenting Node.js processes, including database schemas, as well as preparing reports.

• Recommending and implementing improvements to processes and technologies.

Node.js Developer Requirements:

• Bachelor's degree in computer science, information science, or similar.

• At least 4+ yrs experience as a Node.js developer.

• Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.

• Experience collaborating in an agile environment alongside designers, analysts, and product owners.

• Experience designing and documenting APIs (we use Node.js, Express, OpenAPI Spec)

• Experience in building scalable production services and monitoring performance (we use Kibana, New Relic)

• Knowledge of front-end technologies such as HTML5 and CSS3.

• Superb interpersonal, communication, and collaboration skills.

• Exceptional analytical and problem-solving aptitude.

• Great organizational and time management skills.

• Availability to resolve urgent web application issues outside of business hours.

We are a highly innovative Fashion tech startup, looking for a senior developer to develop the platform and drive the technology initiatives of the company

Key focus areas: Product Architecture, Full-Stack development, Product Deployment and innovation in technology

Roles & Responsibilities:

1. Work as a Sr. Software Developer with strong coding capabilities and cloud capabilities
2. Design, architect and implement the product platform from the scratch
3. Ownership of end to end design, implementation, and development
4. Foster the development of highly scalable and performance-driven product
5. Work closely with the business team to understand the business requirement and vision of the product
6. Collaborate with the Founder to create an effective product road map and release plans
7. To build, lead and mentor the development team  
8. Excellent team management and interpersonal skills

Must-have skills

1. Extensive and deep knowledge of building highly scalable and performance-centric web platform
2. Proficient in designing the monolithic or microservices architecture
3. Understanding the nitty-gritty of data and its useful presentation
4. Deep insight into search and analytics systems
5. Basic understanding of building a graphical representation of data
6. Strong understanding of the data and its usage

Tools and Platform

1. Strong experience in designing and implementing web-based solutions based on any full-stack
2. Excellent understanding and strong working exposure to the AWS platform and it’s a tool like cloud front S3 etc.
3. Proficient and good knowledge of working with databases 
4. Hands-on experiences on at least one DBMS
5. Exposure to web scrapping tools and framework
6. Search and indexing tools like elastic search
7. Exposure to HTML is a must
8. Prior experience of designing, developing and deploying platforms 
9. Knowledge of making SEO friendly and responsive web platforms
10. Experience in designing, scaling and securing APIs