MERN Stack Developer

About the Role

We’re looking for a Full Stack Developer who deeply cares about how things look, feel, and flow. Someone who writes elegant code and designs beautiful, functional experiences that users love.

You’ll work at the intersection of design and engineering, turning ideas and prototypes into smooth, high-performing applications built on React and Node.js. This role suits developers who think in pixels, obsess over transitions, and genuinely want every click and animation to feel just right.

Responsibilities

• Develop modern, responsive interfaces using React.js, TypeScript, and UI frameworks (Tailwind, Material, or similar).
• Transform design mockups and Figma prototypes into production-quality web experiences.
• Build scalable APIs and backend systems using Node.js, Express.js, and REST/GraphQL.
• Design and manage databases (MySQL, MongoDB) with efficient and clean data flow.
• Optimize for speed, accessibility, and smooth user interactions across devices.
• Collaborate with designers and product teams to refine visual and interaction details.
• Deploy, monitor, and scale applications on AWS (EC2, S3, CloudFront, Lambda, RDS).
• Maintain high code quality through clean architecture, testing, and peer reviews.

You’ll Fit Right In If You

• Love crafting beautiful, consistent, and intuitive interfaces.
• Notice when a button is off by a few pixels and care enough to fix it.
• Balance creativity with engineering discipline.
• Enjoy solving real user problems with thoughtful design and seamless performance.
• Have opinions about UX — and back them with reasoning, not ego.

Tech Stack

• Frontend: React.js, TypeScript, Redux / Zustand, Tailwind CSS, Styled Components
• Backend: Node.js, Express.js / NestJS, RESTful APIs, GraphQL
• Databases: MySQL, MongoDB, PostgreSQL (optional), Redis (caching)
• Cloud & Tools: AWS (EC2, S3, CloudFront, RDS, Lambda), Docker, CI/CD, GitHub Actions
• Bonus: Next.js, Figma-to-code workflows, WebSockets, Serverless functions

Qualifications

• 3–7 years of full-stack experience with a strong frontend/UI focus.
• Proven experience creating visually stunning and user-centered web apps.
• Deep understanding of frontend architecture, design systems, and responsive layouts.
• Solid knowledge of databases, API design, and deployment best practices.
• Bachelor’s degree in Computer Science or equivalent practical experience.

Why Join Us

• Build products that users actually love to use.
• Collaborate with a design-first, detail-oriented team.
• Work with modern tech and creative freedom.
• Shape the product’s visual identity and user experience end-to-end.

Experience: 5+ years

Location: Mumbai - Andheri Marol

Company: Wissen Technology

Website: www.wissen.com

Job Description:

Wissen Technology is currently hiring experienced Full Stack Java Developers with strong expertise in Core Java, Spring Boot, front-end technologies (Angular/React), REST APIs, multithreading, data structures, and SQL.

You will be working on enterprise-grade solutions as part of a global development team tackling complex problems in domains like Banking and Finance.

This is an excellent opportunity to be part of a high-caliber, technically strong team delivering impactful solutions for Fortune 500 companies.

Key Responsibilities:

• Develop and maintain scalable, high-performance applications with a focus on both backend (Java/Spring Boot) and frontend (Angular/React).
• Participate in all phases of the development lifecycle – design, coding, testing, deployment, and maintenance.
• Work closely with cross-functional teams to understand requirements and deliver quality solutions.
• Optimize application performance and ensure responsiveness across platforms.
• Write clean, maintainable, and well-documented code.

Required Skills:

• 5+ years of hands-on experience in Java, Spring Boot.
• Strong proficiency in frontend frameworks like Angular or React.
• Experience with RESTful APIs, microservices, and web technologies (HTML, CSS, JavaScript).
• Sound knowledge of data structures, algorithms, and multithreading.
• Experience in developing and deploying enterprise-grade applications.
• Solid understanding of RDBMS (e.g., Oracle, MySQL, PostgreSQL).
• Exposure to DevOps practices, version control (Git), and CI/CD pipelines.
• Familiarity with Unix/Linux environments.
• Strong problem-solving, communication, and analytical skills.

Good to Have:

• Exposure to cloud platforms like AWS, Azure, or GCP.
• Understanding of containerization using Docker/Kubernetes.
• Knowledge of Agile methodologies.

About Wissen Technology:

Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals.

Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’.

Our team consists of 1200+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world.

Wissen Technology offers an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.

We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.

JD:

- 12 + Yrs of total experience along with knowledge and hands-on experience in MERN (Mongo db, Express js, React js and Node js) stack.

- Experience to unblocking and helping technical teams.

- Experience in application architecture design and development

- Expertise in designing scalable applications.

- Experience in working on deployments, cloud infra and CI/CD.

- Full stack development experience 

- Hands on experience in MERN stack.

As a Full Stack Developer, you will be working 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

• Participating in the full development life cycle, including implementing design, coding, testing, and production release
• creating modules and components in React and coupling them together into a functional app
• Understanding the nature of asynchronous programming and its quirks and workaround
• Integrating multiple data sources and databases into one system
• Creating database schemas that represent and support business processes
• Driving innovation through rapid prototyping and iterative development

Desired Candidate Profile

Role description:

We are looking for Senior Software Engineer with expertise and experience in designing and developing

applications including new developments, enhancements, maintenance and support. The role involves continuous collaboration with team, partners.

Candidate description:

Should have:

 Passion for technology and financial domain with demonstrated ability to learn quickly

 Delivery focus with ability to take full ownership

 Strong commitment to quality and delivery

 Strong communication skills

Skills/Knowledge and experience:

 Object oriented design and development skill

 Webservices - Node JS/Express JS, Rest API

 Frontend – Angular (Javascript and Typescript), React

 Unix and Shell scripting

 SQL Proficiency, good to know MongoDB

• 5+ years of experience participating in the delivery of technology services.
• A proven ability to learn new applications & innovate in technology
• Strong Experience in technologies like Node, Webservices and Microservices
• Experience with cloud components and services and containerization technologies is desirable
• Exposure to ReactJS mandatory
• Experience working with multiple types of datastores: Mongo DB, SQL
• Experience in integrating, designing and developing solutions is desirable
• Experience with CI/CD and TDD is desirable
• Frameworks - Express , Hapi , feathers
• Strong knowledge in Javascript

We are looking for a lean MERN Stack developer who is specialized in developing JavaScript-based technologies i.e. MongoDB, ExpressJS, ReactJS, NodeJS. If you have that energy and passion to create impacts, we have the perfect job for you!  Job has flexible or temporary work from home options.

Job Responsibilities-

• Requirement gathering, UML & Database modelling and documentation
• Building interactive consumer data from multiple systems and RESTfully abstract to the UI through a Node.js backend
• Defining code architecture decisions to support a high-performance and scalable product with a minimal footprint
• Address and improve any technical issues
• Collaborate well with engineers, researchers, and data implementation specialists to design and create advanced, elegant and efficient systems.
  
  

Requirements-

• BSc degree in Computer Science or similar relevant field
• Previous working experience as a MERN Stack Developer for 3+ years
• Experience with modern frameworks and design patterns
• In depth knowledge of NodeJS, ExpressJS or Restify
• Experience of implementing applications using Angular or React
• Experience for creating front end applications using HTML5, CSS3 Angular, LESS/SASS
• Hands on experience with JavaScript Development on both client and server-side
• Knowledge of Functional Testing regarding Unit Testing, Integration Testing & End-to-End Testing is required
• Strong knowledge of Testing tools is required with subject to Jest and Enzyme, React Testing Library, Puppeteer (or PhantomJS, Nightmare or Headless Chrome) and Selenium WebDriver
• Rest API development, documentation and testing using tools like Postman
  
  

Knowledge of the following will be considered as an advantage-

• Requirements gathering, modeling, documentation and project management using Visual-paradigm.com
• Javascript based workflow engines and Flow-Based Programming
• Consumer Web Development Experience for High-Traffic, Public Facing web applications,
• Experience with cloud technologies
• Creating secure RESTful-based web services in XML and JSON, JavaScript, JQuery,
• Continuous integration (Jenkins/Hudson) and version control (SVN, Git).
• Converting UI and website designs (.psd, .xd, etc) into react components using Storybook.js and creating test cases with scripts; including documentation and automated visual testing
• React with WordPress Headless CMS using frameworks like Frontity.org
• org for authorization and access control models
• io microfrontend’s architecture framework for highly modular fully flexible applications
• Speech Recognition , voice interface , and other AI functionility
• React native mobile, Electron desktop application conversion
• Heroku Pipelines, Heroku: Browser and UAT, Heroku CI, DevOps tools and processes.

• 2+ years of software development experience
• Experience designing, implementing and using web services in a Microservice Architecture
• Experience and a good understanding of Node.JS
• Experience in working with any JavaScript frameworks (React, Ember, Knockout, etc.)
• Familiar with relational & non-relational databases such as Postgres, Oracle, SQL Server, MySQL, Dynamo
• Familiar with CI (Continuous Integration) and CD (Continuous Delivery)
• Nice to have - Experience with AWS  
• Nice to have - Experience working in an agile development process

• See the inherent challenges in all things; if a task is complicated, you simplify it; if it is simple, you excel at it; if it is mundane, you automate it
• Be a problem solver; be given any problem and will come back with solutions, or at least alternatives
• Be a perfectionist; you are not satisfied until your code is rock solid
• Be pragmatic; you implement the best solution for the problem, not the coolest solution, and can tell the difference
• See the big picture; we write software to solve real business problems