MEAN + Nest Stack Developer

Job Summary:

As a MERN Stack Developer, you will be responsible for designing, developing, and maintaining robust full-stack applications using MongoDB, Express.js, React.js, and Node.js. With 5+ years of experience, you’ll work closely with cross-functional teams to deliver secure, performant, and user-friendly solutions.

Key Responsibilities:

• Build end-to-end web applications using the MERN stack
• Write clean, maintainable, and efficient code
• Integrate RESTful APIs and third-party services
• Optimize applications for maximum performance and scalability
• Collaborate with product, QA, and DevOps teams throughout the SDLC
• Participate in code reviews, troubleshooting, and improvement initiatives

Required Skills & Qualifications:

• 5+ years of experience in full-stack development with MongoDB, Express, React, and Node.js
• Strong JavaScript/TypeScript skills (ES6+)
• Solid understanding of RESTful APIs, MVC architecture, and microservices
• Experience with Git and Agile methodologies
• Familiarity with responsive UI/UX best practices

Preferred Skills:

• Exposure to cloud platforms like AWS or Azure
• Experience with CI/CD pipelines and testing frameworks like Jest or Mocha
• Familiarity with containerization tools like Docker/Kubernetes

About CryptoXpress

CryptoXpress is building the world’s easiest platform for crypto and everyday life. We enable users to trade crypto, book flights and hotels, and shop with gift cards - all in one app. Join our fast-paced, mission-driven team shaping the future of digital payments.

Apply Link: https://forms.gle/TMWRMtEDWRjEi3vK8

Role Overview

You will turn business requirements into reliable application logic and functionality, building and maintaining our web and mobile applications using React Native, ReactJS, Node.js, and related technologies. Your work will directly impact our product experience for thousands of users worldwide.

Key Responsibilities

• Develop & Maintain Applications: Build robust features for mobile and web using React Native and TypeScript. Maintain, refactor, and improve the existing codebase.
• Collaborate Across Teams: Work closely with product, design, and backend teams to deliver pixel-perfect UI in line with Figma design systems.
• Business Analysis: Translate business needs into actionable features with clear, reasonable estimations.
• Code Quality: Participate in code reviews, standups, and ensure high code quality by addressing bugs and tech debt.
• Problem Solving: Show good judgment—propose pragmatic alternatives when requirements are unclear or designs can be optimized.
• Integration: Integrate with REST APIs and third-party services. Handle data storage, offline capability, and security.
• Communication: Provide clear, timely updates and feedback during business hours.

Required Skills & Experience

• React Native (Mandatory)
• ReactJS (Web)
• NodeJS (Backend/Server-side)
• JavaScript, TypeScript, HTML, CSS
• API Integration (RESTful services)
• Mobile App Development Lifecycle (prototyping, release, updates)
• Experience with Redux, Flux, unit testing (Jest/Enzyme), and code debugging
• Experience with code quality tools (ESLint, type checking, prop types)
• Knowledge of responsive UI, Figma design compatibility, and pixel-perfect implementation
• Basic understanding of blockchain technologies
• Strong problem-solving and communication skills

Nice-to-Have

• Experience with backend frameworks (Express.js, NestJS, or similar)
• Familiarity with Web3.js or other blockchain libraries
• Exposure to mobile offline storage and push notifications
• Knowledge of security best practices in mobile/web apps

Pro Tip: Tips for Application Success

• Explore CryptoXpress before applying, take 2 minutes to download and try the app so you understand what we're building
• Show your enthusiasm for crypto, travel, and digital innovation
• Mention any self-learning initiatives or personal crypto experiments
• Be honest about what you don't know - we value growth mindsets

MERN Stack Developer

2.5+ YEARS

Roles and Responsibility

Working experience as a MERN Stack Developer.

Design, code and manage large scale services using cutting edge technologies (NodeJs, ReactJS/AngularJS/VueJs etc).

In-depth knowledge of NodeJS.

Creating secure RESTful-based web services in XML or JSON.

Good knowledge in ECMAScript(6/7/8) is essential.

Strong fundamentals in Data Structures and Algorithms.

Experience implementing applications using Angular or React.

Should have an working experience with state management, React Hooks, React Fragments etc.

Should have a good Knowledge of Redux, Flux, and Webpack.

Writing the test case for components.

Experience working with Docker, Redis, MySQL, MongoDB.

Comfortable taking challenges and learning new technologies.

Excellent communication skills and client-facing experience.

Ability to mentor and build the team.

Knowledge of code versioning tools such as Git, Bitbucket or SVN.

Knowledge of the following will be considered as an advantage

Experience with Socket.IO for Real time communications.

Consumer Web Development Experience for High-Traffic, Public Facing web applications.

Caching with Redis For Speedy Performance.

Experience with cloud message APIs.

Knowledge of GraphQL, PostgreSQL.

Knowledge of NextJs.

Knowledge of any frameworks of NodeJS.

Experience with Progressive Web applications.

Knowledge of SSR.

Responsibilities

• Strong knowledge of MERN stack (MongoDB, Express JS, React JS, Node JS, HTML5, CSS3, jQuery, Bootstrap, SASS)
• Develop user interfaces for modern rich internet applications with the latest front-end technologies
• Developing features to enhance the user experience.
• Should have excellent in-depth knowledge on Nodejs and MongoDB
• Hands-on experience working with Object-Oriented JavaScript (OOJS), JavaScript libraries and their practical uses in building complex interactive experiences
• Building reusable code for future use
• Writing tested code and its documention

• 1+ years of experience in front end development and backend development is must
• Thorough knowledge of HTML5, CSS3 (LESS/SASS),React, Nodejs and Mongodb
• Solid understanding of JavaScript and the ability to pick up any framework quickly
• Strong Experience in back-end frameworks used to develop dynamic web pages (REST, GraphQL, WebSocket/socket.io)
• Expertise in developing and testing across multiple browsers, platforms, DOM implementations, etc.
• Strong experience in React, React Hooks, Redux, Thunk | Saga, ES6, Typescript, ESLint, Nodejs, GraphQL, Redis, AWS, Git, Github, Docker

Bonus but not mandatory

• UI/UX designs
• AWS
• Git
• CI/CD

• Good hands-on and experience in Ruby on Rails, NodeJS and React/Angular/VueJs
• Knowledge of an SQL Database like MYSQL, Postgres.
• Basic Knowledge of programming in basic data structures and algorithms.
• You should have good experience working with relational and non-relational databases. We use Postgres and Cassandra.
• Good knowledge of version management with git.
• Awareness of TDD.
• CI/CD knowledge would be a huge advantage
• Will to design and maintain large scale distributed systems.

We are looking for a Node.js Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be 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. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is an advantage as well.

Responsibilities

• Integration of user-facing elements developed by front-end developers with server side logic
• Writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Implementation of security and data protection
• Integration of data storage solutions by using mySQL database.

Skills And Qualifications

• Should have industry experience of at least 1 year.
• Strong proficiency with JavaScript and strong knowledge of Node.js and sails frameworks
• Understanding the nature of asynchronous programming and its quirks and workarounds
• Good understanding of server-side templating languages such as EJS
• Good understanding of front-end technologies, such as HTML5, and CSS3
• Understanding accessibility and security compliance 
• User authentication and authorization between multiple systems, servers, and environments
• Integration of multiple data sources and databases into one system
• Understanding fundamental design principles behind a scalable application
• Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform
• Creating database schemas that represent and support business processes
• Implementing automated testing platforms and unit tests
• Proficient understanding of code versioning tools, such as Git