Senior Fullstack Engineer (React, JSON, PostgreSQL)

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

1、Job Responsibilities:

Backend Development (.NET)

• Design and implement ASP.NET Core WebAPIs
• Design and implement background jobs using Azure Function Apps
• Optimize performance for long-running operations, ensuring high concurrency and system stability.
• Develop efficient and scalable task scheduling solutions to execute periodic tasks

Frontend Development (React)

• Build high-performance, maintainable React applications and optimize component rendering.
• Continuously improving front-end performance using best practices
• Deployment & Operations
• Deploy React applications on Azure platforms (Azure Web Apps), ensuring smooth and reliable delivery.
• Collaborate with DevOps teams to enhance CI/CD pipelines and improve deployment efficiency.

2、Job Requirements:

Tech Stack:

• Backend: ASP.NET Core Web API, C#
• Frontend: React, JavaScript/TypeScript, Redux or other state management libraries
• Azure: Function Apps, Web Apps, Logic Apps
• Database: Cosmos DB, SQL Server

Strong knowledge of asynchronous programming, performance optimization, and task scheduling​

• Proficiency in React performance optimization techniques, understanding of virtual DOM and component lifecycle.​
• Experience with cloud deployment, preferably Azure App Service or Azure Static Web Apps.​
• Familiarity with Git and CI/CD workflows, with strong coding standards.

3、Project Background:

Mission: Transform Microsoft Cloud customers into fans by delivering exceptional support and engagement.​

• Scope:
• Customer reliability engineering
• Advanced cloud engineering and supportability
• Business management and operations
• Product and platform orchestration​
• Activities:
• Technical skilling programs
• AI strategy for customer experience
• Handling escalations and service reliability issues​

4、Project Highlights:

React Js, ASP.NET Core Web API; Azure Function Apps, Cosmos DB

Responsibilities:

• Develop and maintain high-quality, efficient, and scalable backend applications.
• Participate in all phases of the software development lifecycle (SDLC)
• Write clean, well-documented, and testable code adhering to best practices.
• Collaborate with team members to ensure the successful delivery of projects.
• Debug and troubleshoot complex technical problems.
• Identify and implement performance optimizations.
• Participate in code reviews
• Hands-on experience with Springboot, Java 8 and above.
• 2-5 years of experience developing Java applications.
• Knowledge about at least one messaging system like Kafka, RabbitMQ etc.
• Required React developer requirements, qualifications & skills:
• Proficiency in React.js and its core principles
• Strong JavaScript, HTML5, and CSS3 skills
• Experience with popular React.js workflows (such as Redux)
• Strong understanding of object-oriented programming (OOP) principles.
• Experience with design patterns and best practices for Java development.
• Proficient in unit testing frameworks (e.g., JUnit).
• Experience with build automation tools (e.g., Maven, Gradle).
• Experience with version control systems (e.g., Git).
• Experience with one of these databases – Postgres, MongoDb, Cassandra
• Knowledge on Retail or OMS is a plus.
• Experienced in containerized deployments using Docker, Kubernetes and DevOps mindset
• Ability to reverse engineer existing/legacy and document findings on confluence.
• Create automated tests for unit, integration, regression, performance, and functional testing, to meet established expectations and acceptance criteria.

What will your job look like?

• Develop product modules and enhancements as per functional specs
• Assist in preparing functional and technical design specifications
• Work with business analysts, QA, and IT departments as required

All you need is…

• Strong analytical abilities and problem-solving skills applying software engineering principles
• Ability to work in a collaborative team environment while also being able to execute work independently
• Ability to write modular, clean, efficient code
• Eagerness to learn and interest in new technologies
• Ability to work in a fast-paced, start-up environment
• Diligence in all aspects of work performed

Must Have

Technical Skills

• Backend languages/frameworks:
• J2EE (Java, JSP, Servlets)
• Spring Framework ecosystem and micro-services
• Tag Libraries
• UI layer programming:
• HTML
• DHTML
• JavaScript
• cascading style sheets (CSS)
• React/Angular
• Databases:
• SQL queries, indexing, views

Work Experience

• 3+ years of relevant software development experience
• Usage of SVN or similar SCM system
• Usage of Eclipse or similar IDE

Educational Experience

• Bachelor's degree in Computer Science or a related field

• Architect, develop and maintain core products and services of the company.
• Create database architecture and best practises for optimization in speed and product operating costs.
• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design
• Develop and manage well-functioning databases and applications
• Write effective APIs with high-volume large scale transaction processing capabilities.
• Collaborate with design teams to ensure flawless UI and UX is achieved 
• Build features and applications with a mobile responsive design
• Write technical documentation
• Test software to ensure responsiveness and efficiency
• Work with customers in evaluating technical requirements.
• Work closely with the product managers to achieve product vision and goals
• Review work of other developers and contractors, provide feedback and mentoring.
• Assist in the hiring of technical talent.

• Proven experience as a Full Stack Developer or similar role for atleast 3 years 
• In depth knowledge of Ruby on Rails, NodeJS, ExpressJS or Restify
• Experience implementing applications using Angular 1 or React
• Experience creating front end applications using HTML5, Angular, LESS/SASS
• Hands on experience with JavaScript Development on both client and server-side
• Automating the building and deploying of code along with continuous integration (Jenkins/Hudson) and version control (SVN, Git)
• Strong experience is deploying and managing application in AWS and Google Cloud
• Creating secure RESTful-based web services in XML and JSON, Javascript, JQuery
• Experience with modern frameworks and design patterns, minimum 2 years experience with MEAN Fullstack paradigm

• Know how to create apis and applications
• Know how to architect and scale databases
• Know how to build front end for applications
• Know how to deploy applications on the cloud

• Previous working experience as a MERN/MEAN  Stack Developer for 1 year (Minimum).
• In depth knowledge of NodeJS, ExpressJS or Restify
• Experience implementing applications using Angular 2+ versions or React
• Experience creating front end applications using HTML5, Angular/React, LESS/SASS
• Hands on experience with JavaScript
• Development on both client and server-side
• Experience on Angular 2+  and React Js will be an plus point
• Experience on both MEAN/MERN Technologies will be an advantage.

We are looking for a full-stack Javascript developer mainly with Javascript Frameworks (React, Angular) and NodeJS skillset.

As a Frontend JS Developer, you will be required to implement a complete user interface in the form of a mobile and desktop web app, with a focus on performance.

As a NodeJS developer, you will need to focus on the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end.

Responsibilities

• Participate in the full development life cycle, including implementing design, coding, testing and production release

• Your main duties will include creating modules and components in React and coupling them together into a functional app.

• Understanding the nature of asynchronous programming and its quirks and workarounds

• Integration of multiple data sources and databases into one system

• Creating database schemas that represent and support business processes

• Drive innovation through rapid prototyping and iterative development

Qualifications

• Passionate about developing amazing user experiences

• Strong proficiency with JavaScript (Object Oriented)

• At least 1 year of experience working in MEAN or MERN stack - i.e. React/Angular and Nodejs

• Deep knowledge of Frontend Application practices and commonly used modules based on extensive work experience along with Node.js applications on top of RESTful APIs

• Experience with web frontend technologies such as HTML5, CSS3,  Bootstrap

• Proficient understanding of code versioning tools, such as Git is a plus

• Knowledge Experience in building ionic/hybrid apps is a huge positive

Brief about Coursebook: 

Coursebook is a SaaS platform which helps educational businesses like Coaching & Training Institutions to Create, Market and Sell video courses Online through Coursebook. We are currently incubated at IIM Bangalore where our whole Team is placed. 

Product 1:

https://coursebook.in/">Coursebook.in was launched in March 2019, as a Marketplace for Courses, where training and coaching institutions could list their Courses on our platform and students could view and book the desired course of their choice. After a few months we choose not to actively develop this product due to a greater need in another Product. 

Product 2: (Main Product)

https://coursebook.us/">Coursebook.us is a SaaS platform where Educational businesses like Coaching and Training institutions can manage their day to day operations like Leads, Marketing, Online Payments, Invoicing, students as well as delivering a great learning experience to their students through Video Courses and LIVE CLASSES.

In short, we help any Freelancer, Universities, Coaching and Training institution to take their complete operations online.

We have different dashboard for Institute Admin (Owner/Director), Branch Manager, Sales Manager, Mentor/Teacher and for the student making our offerings very concrete. 

Technology Stack Information:

The web application would be designed & developed using open source technologies

Backend Languages

Golang and Node

Database

PostgreSQL is the choice for the database layer. PostgreSQL is industry standard for web applications and server the need for this scale of an application.

Infrastructure

Amazon EC2 for web hosting, S3 for storage, SQS for implementing queues are few of them which are to be integrated and used in the application.

Front End Elements

React

CTC: 10,00,000

Brewhackers Technologies is a place for creative people to develop themselves and thrive in a rapidly changing world. We are developing a service to help people consume and share ideas that matter faster and more efficiently. We deliver this through an app for iOS and Android.

We are small team so :

• Passion for the problem is our secret sauce. At a startup, everyday is a struggle but we get through that by keeping our eyes on the prize.
• We find a way or make a way. No excuses.
• We thrive in uncertainties. We have more questions than answers and more opportunity to learn new things.
•  

Our tech stack is made of :

• Node.Js, PostgreSQL, AWS on the backend
• Flutter on the front end.

We are looking for a full-stack engineer with a passion for product and delivery. This is the type of job where you are pushed in cold water and you have to learn to swim by yourself. Your personality and your traits matter more than your tech expertise:

• We are looking for an independent, responsible person. Mainly because there is no time for micro-management. We expect you to be able to carry your own weight and be a reliable partner.
• We are looking for a fast learner. We may need to use technologies that you never used before. That should not scare, but excite you. In most cases we may not even know what we need and you may have to propose something.
• We are looking for you to get stuff done. We work in weekly sprints because we believe in consistent delivery over big lengthy releases.
• We want you to be proactive. We appreciate conviction way more than consensus. Words are nice, opinions are cute … but proactivity in action is golden.
• We want you to be a partner for your colleagues in the dev team. Help or lead the planning process, code reviews, commits etc. Provide guidance and help your colleagues when they get stuck.
• We want you to be an over-communicator. We are remote-first and it’s up to you to show your work, explain your ideas or highlight problems.

Now on technology, these would be nice:

• Experience with Javascript.
• Experience with mobile development (native or hybrid)
• Experience with interface building frameworks (React, Angular, Vue etc)
• Experience with Node.JS, Express Framework and GraphQL
• Experience with SQL and NoSQL databases