Javascript Developer

Position Overview: Front-End Developer (Next.js)

We are seeking an experienced Front-End Developer with strong hands-on expertise in Next.js and React.js. The ideal candidate will build and maintain scalable, responsive web applications using modern front-end technologies and best practices in performance, SEO, and rendering techniques.

Key Responsibilities

• Develop and maintain responsive, scalable web applications using React.js and Next.js
• Implement CSR, SSR, and SSG using Next.js best practices
• Build reusable, modular UI components following clean front-end architecture
• Integrate and manage REST APIs for data retrieval, caching, and error handling (React Query or similar)
• Optimize applications for performance, SEO, and accessibility
• Collaborate with backend engineers and UI/UX designers to deliver high-quality user interfaces
• Debug, test, and document code to ensure maintainability and scalability

Required Skills

• Strong knowledge of Next.js fundamentals (routing, rendering techniques, API routes)
• Proficiency with React Hooks and understanding of component lifecycle
• Solid experience integrating REST APIs and handling errors effectively
• Familiarity with state management libraries such as React Query, Redux, or Zustand
• Strong skills in JavaScript (ES6+), HTML5, and CSS3
• 7–10 years of front-end development experience

Responsibilities:

• Developing new user-facing features using JavaScript framework React JS.
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high-quality code which works across platforms.
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
• Should be able to take initiatives and ownership and build the products from scratch.
• Maintain code and write automated tests to ensure the product is of the highest quality.

Requirements:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
• Thorough understanding of React.js, JavaScript, HTML, CSS and its core principles.
• Experience with popular React.js workflows (such as Flux or Redux).
• Familiarity with newer specifications of ECMAScript.
• Experience with data structure libraries (e. g., Immutable.js ).
• Knowledge of isomorphic React is a plus.
• Familiarity with RESTful APIs.
• Knowledge of functional and object-oriented programming.
• Knowledge of modern authorization mechanisms, such as JSON Web Token.
• Familiarity with modern front-end build pipelines and tools.
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements.
• A knack for benchmarking and optimization.
• Familiarity with code versioning tools such as GIT.

Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at a massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.

As a Front End software engineer, you will work on the ReactJS powered user interface used by Fulfil merchants to manage their back-office operations. This is mission critical software and your primary focus will be on developing user interface components and implementing them following well-known React.js workflows. You will ensure that these components and the overall application are robust and easy to maintain. In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality are important.

What You’ll Do:

• Collaborate with a small yet extraordinarily talented team of engineers to implement front-end technologies
• Develop new user-facing features using React.js and React Native
• Work closely with the Design and Product teams to translate complex technical workflows into delightful user experiences
• Define how Fulfil builds user interfaces and ensure that we’re utilizing and keeping up with modern web standards
• Continually test, measure, and iterate on the results of your work in the spirit of continuous improvement
• Write clean, reusable, and well-tested front-end code
• Help to bridge the responsibilities of the Product and Engineering teams, spending time with both on the way to launching new products
• Architect efficient and reusable front-end abstractions and systems that drive complex web applications
• Create reliable and type-safe applications with Typescript
• Build and contribute to open source projects
• Build reusable components and front-end libraries for future use
• Optimize components for maximum performance across a vast array of web-capable devices and browsers

We’re Looking for Someone With:

• 5+ years of experience as a front end engineer
• Experience in building large-scale web applications in a fast-moving team environment
• A strong understanding of UX and UI design standards
• The perfectionist’s touch on a pragmatist’s deadline: you strive for pixel-perfection and intuitive functionality
• Strong proficiency in JavaScript (2-4 Years of experience), including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles, with experience in popular React.js workflows
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc
• Experience with popular testing frameworks, like Jest, Cypress, and Testing Library.
• The ability to bring any design to life with HTML and CSS, with cross browser compatibility and accessibility
• Smarts, humility, communication skills, and equal willingness to teach and learn
• Familiarity with RESTful and GraphQL APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Experience in developing large client side JavaScript applications
• Familiarity with code versioning tools like GIT
• Experience with Javascript testing tools and test automation

Nice to Haves:

• Prior experience at a growth stage Internet/Software company
• Demonstrated work beyond the front-end, experienced in integrating with a wide array of back-end technologies and services (e.g. experience with Python, AngularJS)
• Experience developing large client-side applications and optimizing them for performance
• You can straddle client and server development, creating APIs that drive web apps
• You understand the intricacies of timezones
• Web optimization, performance tools, and load testing
• You maintain or contribute to an open-source project

• 3+ years of experience in web development
• Minimum 2+ years’ experience in React js

Good to have

• Design and develop automation scripts when needed
• Experience in the Real Estate will be a plus

Requirements

• 2-5 years of experience as a front-end developer
• Experienced in developing applications using JavaScript, ReactJS, Redux, Redux Saga, NodeJS, HTML5, CSS3/CSS4 and other UI technologies.
• Understanding and experience with ES6 concepts, asynchronous processing, partial page refresh, DOM traversal and manipulation.
• Experience with REST API construction, documentation, and architecture, including API description languages like Swagger.
• Comfortable writing Unit Test Cases (Enzyme/ Jest)
• Familiar with cloud services: AWS, Dev-ops such as Git, Jira, Confluence
• Good to have experience/knowledge of
  • Spring (MVC, IOP/DI, REST, Security)
  • Docker,
  • Scala,
  • Python
• Able to connect the dots between code and business value

Responsibilities

• Engage in high level conversations about business strategy and the role tech plays in it
• Write well-designed, testable, and efficient code that powers our application
• Write specs and do planning for everything we build
• Conduct application analysis, testing, and debugging
• Diligently document code to keep it clean and transparent
• Ensure cross-browser and device compatibility

You Are

• You believe it’s always on you to make sure anything you do is a success.
• You have the ability to make quick and effective decisions.
• In love with a challenge. You revel in solving problems and want a job that pushes you out of your comfort zone.
• Open to change. You’re inspired by the endless ways in which everything we do can always be improved.

Add-Ons/Interview Process

• You should be comfortable working in a Start-up for in-house product development.
• Will not be engaged with any Client, but with the internal team (in India & the US).
• Will be provided a hands-on exercise to complete and submit as a part of interview.

• Rockstar Coworkers
• Friendly & Energetic Environment
• 21 paid leaves
• Reward Employees with Experiences
• Free Food & Coffee
• Team Outings from time to time
• Work From Home Option Available
• Treat all employees as equals

Tech Stacks used  by us : 

Frontend : VueJs 

Backend : NodeJs

Key skills: ReactJs, HTML5, CSS3, REST Protocols, NodeJs, JEST, GraphQL.

Responsibilities:

• Participation in Company's product and implementation as a Frontend developer.
• Build the front-end for our mobile and web products
• Convert wireframes into working UI interfaces
• Write REST calls to interact with our back-end API
• Participation in research activities.
• Build reusable code and libraries for future use
  
  

Requirements:

• Keen design eye to translate wire frames into pixel perfect web pages
• Excellent JSON/DOM manipulation skills
• Should have strong key skills in HTML5, CSS and advanced JavaScript and the ability to turn design mock-ups into great looking sites with user interactions.
• Must also be up-to-date with cross-browser and cross-platform issues, have a good eye for detail and be able to work to tight deadlines
• Experience in building Scalable Apps
• Experience with third- party libraries, social media integration and APIs.
• Work on building product from scratch and improving application performance.
• Should understand and have knowledge on the application security practices/vulnerabilities
• Understands Web Products and understand Performance of the application.
• Linux and Unix Skills
• Hands on experience in collecting and analyzing/improving Application analytics
• Good understanding in User Patterns, CTRs and closely work with UX and Product team in a dynamic environment
• Understanding of server-side CSS pre-processing platforms, such as LESS and SASS
• Proficient understanding of code versioning tools, such as Git / SVN
• Good understanding of asynchronous request handling, partial page updates, and AJAX

Industry Background : Product based startup
Location : Hiranandani - Powai, Mumbai. (Remote working option available for candidates residing out of Mumbai)
Working Days & Timings : Monday to Saturday (Alternate Saturdays off), 12pm - 9pm.

Kindly apply if interested.