MERN Developer

About the Role

We are hiring an experienced MERN Stack Developer who can independently build and scale full-stack applications from scratch. The ideal candidate must have strong skills in TypeScript, React.js, Node.js, Redux, and REST APIs, along with a solid understanding of microservices architecture, mobile API integrations, and responsive design.

Experience with LLMs, RAG architecture, Kafka, Redis, webhooks, and database systems like PostgreSQL, MySQL, and MongoDB is essential. You’ll be working on scalable systems, enterprise-grade platforms, and AI-integrated products.

Key Responsibilities

• Develop and maintain full-stack web applications using React.js (with TypeScript) and Node.js (Express/NestJS)
• Build and document robust RESTful APIs and mobile-ready endpoints
• Implement and consume webhooks for third-party integrations and internal event-based workflows
• Ensure responsive design principles across devices and screen sizes
• Integrate with mobile applications via secure and scalable APIs
• Work with databases including PostgreSQL, MySQL, and MongoDB
• Integrate Large Language Models (LLMs) and Retrieval-Augmented Generation (RAG) pipelines
• Build and deploy microservices architecture using Kafka, Redis, Docker, etc.
• Manage application state using Redux or Redux Toolkit
• Write test cases using Mocha, Chai, Jest, or similar frameworks
• Participate in system design, architecture discussions, and scalability planning
• Follow Agile practices, perform code reviews, and contribute to CI/CD pipelines
• Collaborate with cross-functional teams including UI/UX, DevOps, QA, and Product Management

Required Skills & Experience

• Minimum 4 years of hands-on experience with the MERN stack
• Strong proficiency in TypeScript, React.js, Node.js, and Redux
• Proven experience in building and consuming REST APIs and webhooks
• Deep knowledge of responsive UI/UX development
• Hands-on experience with mobile-first API design and integrations
• Strong knowledge of PostgreSQL, MySQL, and MongoDB
• Experience with Kafka, Redis, Docker, and microservices
• Exposure to LLM, GPT, RAG, or similar AI models
• Solid understanding of software architecture and ability to build systems from the ground up
• Working knowledge of API security, JWT, OAuth, and rate-limiting
• Familiar with test-driven development and QA practices
• Familiarity with Git, version control, and collaborative workflows good to Have
• Experience with GraphQL and gRPC
• Experience in building SaaS or AI-integrated platforms
• Familiarity with ElasticSearch or RabbitMQ
• Experience with AWS, GCP, or Azure
• Understanding of serverless and event-driven architectures
• 
  

Benefits

• Competitive compensation with performance-based hikes
• Flexible remote or hybrid work options
• Opportunity to work on cutting-edge technologies including AI and scalable SaaS platforms
• Strong leadership and learning-driven environment
• Learning budget for courses, certifications, and conferences

Past experience in working with any product start-up is a plus.

● Proficiency in fundamental front end languages such as HTML, CSS, and JavaScript.

● Familiarity with JavaScript frameworks such as Angular JS, React, and others.

● Knowledge of Node.js and frameworks available for it such as Express (recommended).

● Good understanding of asynchronous request handling, partial page updates, and AJAX

● Understanding of REST Services.

● Experience with Redis.

● Familiarity with database technology such as MySQL, MongoDB and Elasticsearch.

● Proficient understanding of serverless programming.

● Proficient understanding of code versioning tools, such as Git.

● Good problem-solving skills.

● Attention to detail.

Title: Java FullStack Developer

Experience: 4+ years

Work Location: Pune/ Bangalore/ Chennai 

Notice Period: Immediate to 30 Days Max

Key Skills: Java, Angular Mobile, Ionic, Hybrid Mobile, React, Accelerator, Objective-C, UI Design, SOAP/React/SOA

Requirements:

• Looking for candidates with BE/MCA/M.Tech
• Experience of Core Java, JSP, Servlets, HTML5, CSS3, Vanilla JavaScript, jQuery.
• 4-6 years of strong experience in any of the hybrid mobile tools/platforms like Angular Mobile / Ionic
• Hands on experience in Spring boot and Microservices architecture
• Must have good experience in building feature-rich customer facing mobile applications using Accelerator, Java, XML and Objective-C.
• Good Experience in Javascript
• Should have experience in UI design, HTML, CSS for mobile platform.
• Should have experience in SOA, REST, SOAP etc.,
• Preferred experience in Angular/React/any front-end web development framework.
• Must have worked in Agile framework model with team collaboration.

Job Description

• Independently own one or more multiple modules, which includes: requirement analysis, design, development, maintenance & support
• Write extensive, efficient code to address complex modules and that handles interaction between multiple components.
• Rapidly iterate to add new functionalities and solves complex problems with simple and intuitive solutions
• Produce architecture with clean interfaces, that are efficient and scalable
• Participate and contribute to architectural discussions
• Perform design and code reviews
• Perform technical feasibility and trade off studies & guides others to perform these studies
• Solve production issues. Investigate and provide solutions to minimize the business impact due to outage
• Continuously improve performance metrics of modules you own.
• Collaborate effectively across teams to solve problems, execute and deliver results

Requirements

• 2+ years of relevant industry experience in MERN stack
• A deep understanding of JavaScript
• Experience working with SQL and NoSQL databases
• Experience with Unit and Integration tests
• Experience with CI/CD
• Experience with MathJax/Latex
• Experience with large scale video streaming

Job Description:

We are looking for a highly capable Node.js developerto optimize our web-based application performance. Collaborating with our front-end application developers, designing back-end components, and integrating data storage and protection solutions.

Full Stack Responsibilities:  Developing and maintaining allserver-side network components.  Ensuring optimal performance of the central database and responsivenessto front-end requests.  Collaborating with front-end developers on the integration of elements.  Designing customer-facing UI and back-end servicesfor 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 technicalsupport.  Documenting Node.js processes, including database schemas, as well as preparing reports.  Recommending and implementing improvementsto processes and technologies.  Keeping informed of advancementsin the field of Node.js development.

Requirements:  Bachelor's degree in computerscience, information science, orsimilar.  At least two years of experience as aNode.js developer.  Extensive knowledge of JavaScript, web stacks, libraries, and frameworks.  Knowledge of front-end technologiessuch as HTML5 and CSS3, Angular, Reactjs.  Superb interpersonal, communication, and collaboration skills.  Exceptional analytical and problem-solving aptitude.  Availability to resolve urgent web application issues outside of business hours

Experience: 2 to 5 years

Annual CTC: Rupees 6,00,000 to 10,00,000

we are building a professional network for the top 1% of women with a simple mission - more women in leadership positions. we launched in may 2020, and have an early product-market fit (10k paying members, great nps, retention) and strong business signals. we are backed by some of the best investors in india. click https://love.leap.club/" target="_blank">here to read what our members say about us ❤️

our founding team members have previously built zomato, uber, linkedin, facebook, wework. our 0-1 journey is done and we are now ready to scale 🤞

about the role - full stack developer:

• you will work on a disruptive product that is in its early stages.
• you are someone with experience in building products that have significant user base/revenue and robust backend systems running in production catering to real-world users.
• 2+ years of experience in engineering with applied knowledge of restful api design principles and best practices are a must. 
• an ideal candidate would have exceptional application development skills with experience working with nodejs, react, typescript, cloud (aws), mongodb amongst other in-demand technologies.
• having a good understanding of cloud technologies, deployments, backend & frontend end-to-end operations is key for this role.

skills required:

• experience with building and deploying cloud-based backend systems. operating the backend at low latency, high availability, and quality
• experience with developing distributed systems and scalable real-time applications
• excellent programming skills in node.js, react, express.js with a solid understanding of event-driven architecture
• understanding of sql and nosql databases. experience with designing and maintaining scalable databases
• experience with 3rd party libraries and api integrations. eg. stripe, razorpay, etc
• strong problem-solving skills with an understanding of core algorithms and complexity analysis
• solid understanding of operating system fundamentals, networking and concurrency concepts
• experience with aws technologies like lambda, api gateway, beanstalk, ecs, ec2 etc
• experience with docker, kubernetes good to have

why you should work with us:

• you will be part of our founding team and get a front seat view of building a company. we promise a steep learning curve
• work with smart folks who like to have fun and don't take themselves too seriously
• independently lead projects and own your deliverables
• we are generous with esops for folks who treat leap.club like their own company
• 5 day work week, flexible leave policy, health and accidental insurance
• regular offsites and travel to gurgaon (our hq)

-----------------------------------------------------------------------------------------------------

our thesis:

there are 3 critical factors that help us live our best social-professional life -

1. connections & network
2. jobs and opportunities
3. learning & development (courses, coaching etc.)

in the next 5 years, leap.club will transform all three for our members.

• the current-gen platforms have a simple playbook - big networks, feeds, photos, followers/ influencers and monetize through ads. 
• the next gen networks will be smaller/focused and algo driven
• linkedin enables connections, jobs, learning but it's built for scale and not depth.

our goals :

• 2022 - 10,000 members and $1 mil+ annual revenue 
• 2024 - 100,000 members and $10 mil+ annual revenue 
• 2027 - 1,000,000 members and $100 mil+ annual revenue