Frontend Developer

Job Title : React.js Developer

Experience : 3+ Years

Location : Gurgaon (Work From Office – 5 Days a Week)

Employment Type : Full-time

Job Summary :

We are looking for a highly skilled and passionate React.js Developer with 3+ Years of hands-on experience to join our growing team in Gurgaon.

The ideal candidate should have strong expertise in building modern, responsive, and high-performance web applications using React.js and related technologies.

Key Responsibilities :

• Develop, test, and maintain responsive web applications using React.js.
• Translate UI/UX designs into high-quality code.
• Build reusable components and front-end libraries for future use.
• Optimize applications for maximum speed and scalability.
• Collaborate with backend developers, designers, and other team members to deliver high-quality products.
• Participate in code reviews and follow best practices for clean and efficient code.
• Troubleshoot and debug application issues.

Required Skills & Qualifications :

• Minimum 3 years of hands-on experience in React.js.
• Strong proficiency in JavaScript (ES6+), HTML5, CSS3.
• Experience with state management libraries such as Redux, Context API.
• Familiarity with RESTful APIs and modern front-end build pipelines and tools (Webpack, Babel, etc.).
• Good understanding of Git and version control workflows.
• Experience with responsive design and cross-browser compatibility.
• Ability to work independently and collaboratively in a fast-paced environment

Nice to Have:

• Knowledge of TypeScript.
• Experience with Next.js or any SSR frameworks.
• Exposure to Agile/Scrum methodologies.

Perks & Benefits :

• Competitive salary
• Friendly and collaborative work environment
• Opportunity to work on exciting and cutting-edge projects

Certa (getcerta.com) is a Silicon Valley-based tech product start-up that is automating the vendor, supplier, and other stakeholder onboarding processes (think background checks, agreements, and the works) for companies across industries and geographies. With multiple Fortune 500 and Fortune 1000 clients, at Certa's tech team, you will be working on stuff that is changing the way huge companies do business.

Must Haves:

• Experience developing enterprise-grade quality software.
• 3+ years of experience building large-scale front-end applications using React.
• 3+ years of experience using type-safe JavaScript-based languages, such as TypeScript.
• Understanding of modern frontend ecosystems, including Bundling(preferably using vite) Linting, Testing, Releasing.
• Success with mentoring mid-level & junior Engineers.
• Experience in Agile software development methodologies.
• Experience writing automated tests (e.g., Vitetest, Cypress, Jest, Testing Library).
• Experience in building, scaling & maintaining a design system from scratch.
• Experience in improving rendering as well as delivery performance for front-end applications.
• Experience in writing semantic HTML.
• Experience in building scalable, responsive, and cross-browser-compatible web applications.
• Experience in a peak-performance organization, preferably a tech startup.
• Experience working with a remote team.
• Data analysis experience, and understanding of how analytics can help with product decisions.

Bonus:

• Experience building integrations and data synchronizations with event pub/sub-models.
• Experience with WebGL
• Experience in building offline applications using Web Workers
• Open source contributions.
• Running his/her own blog.
• Experience with building 100% keyboard and screen reader-accessible applications.
• Experience setting up and customizing JavaScript tooling and building systems.

What you’ll do: 

● Own and build next-generation web applications which are efficient, reusable front-end abstractions 

and systems. 

● Explore and design lively and compelling consumer experiences. 

● Ensure that all the assigned systems are performing to scale. 

● Actively participate in design and code reviews to build robust applications and prototypes 

● You will mentor junior engineers on design and proper coding practices 

What you will need: 

● A deep expertise in Angular / React, Javascript, HTML5 and CSS3. 

● Understanding of browser internals and a basic understanding of the network stack. 

● Understanding of common design patterns followed in front-end projects. 

● Basic awareness of application security practices and deployment techniques for front-end projects. 

● Should have sound knowledge in computer science fundamentals like data structure, object-oriented 

programming and possess excellent communication skills. 

1. Good understanding of AJAX and JavaScript
2. Experience with RESTful services
3. Experience in building user interfaces with JavaScript frameworks like Angular
4. Skilled with common front-end technologies such as HTML, CSS, JS
5. Strong understanding of JavaScript concepts like Promises and asynchronous programming
6. Ability to decompose a problem into clear software and UX design actions.
7. Understands how to optimize the delivery of code and assets (e.g., images, fonts) to a browser or device (e.g., lazy loading assets, using CDNs, caching, compression, etc.)
8. Experience in working with jasmine, karma, and Angular TestBed
9. Experience in working in agile environments
10. Able to maintain versioning for the source code using Git

Requirements:

 You have designed, refactored, re-architected, deprecated and/or implemented a webapp from start to finish.

 CSS and its pre-processors like SASS/LESS.

 Excellent command over web fundamentals

 Good understanding and experience in building a React app.

 Exceptional coding skills in HTML5, CSS3, Javascript/ES6

 Strong problem-solving and analytical skills

 Familiarity with benchmarking and optimization techniques

 Eye for animation and understanding of motion principles.

 Experience with Agile Development, SCRUM methodologies

 Experience in DevOps - AWS, S3, API Gateway, CI/CD

 Native development experience in React Native (Android and iOS)

 Experience in NodeJs

Additional Full-stack Skills Would Be a Huge Bonus:

 Experience with Mongo DB, Redis, Firebase, NodeJs and its framework/ libraries like Express.

 Experience with PostgreSQL.

 Experience in NoSQL (CouchDB, Cloudant, MongoDB) datastores.

 Experience in building (secure) RESTful services and MVC patterns.

 Experience in coding & hosting on GitHub.

Desired Skills and Experience

CSS,JavaScript,React.js

1.     Significant experience of working in front-end web development
2.     Extensive programming experience in HTML5, CSS3, SASS or LESS, and Bootstrap, Foundation or Materialize
3.     Angular Material, Chart Libraries(D3, Leaflet, Amchart etc).
4.     Solid understanding and development experience in Angular
5.     Experience with Typescript
6.     Experience with tools like Redux, Webpack, Angular CLI and/or Gulp
7.     Experience consuming REST APIs

UI Developer :

Experience in developing Web Applications/websites using HTML5, CSS3, and Bootstrap4 or above is essential

Experience in CSS preprocessors like Less, Sass

Experience in developing Responsive and Mobile First design products/websites using wireframes & mock-ups is essential

Experience in tailwind CSS is a must (config, create custom util function)

Experience in the latest design principles and animations is essential

Experience in Photoshop / Sketch tools and collaborative products like Invision / Figma is desirable

A fair understanding of JavaScript programming / Jquery is essential

Experience in working with React

Good knowledge of web standards and SEO principles is desirable

• Build fluid, scalable, responsive, and consumer-centric web platforms that target users across a wide array of devices
• Collaborate closely with designers & backend developers and contribute to the full product development life-cycle from design and development to roll out
  Take ownership of work and deliver quality results consistently
• Own the delivery of multiple features in a fast-paced work environment
• Build optimized and modular components to provide performance-oriented solutions
• Work in a dynamic and collaborative culture ensuring good teamwork and communication with remote team members when needed

• 4+ Years of experience in frontend web development (1+ in ReactJS)
• Strong past experience of building, scaling and maintaining feature-rich customer-facing single-page applications
• Ability to translate designs into UI elements with accuracy and an eye for fluidity and responsiveness; strong grasp of any of CSS / sass / less
• Proven ability to implement key concepts of state management, security, and caching practices in enterprise-level web applications used at scale
• Proficient understanding of compatibility issues across different browsers and web and mobile devices and available ways to work around them
• Familiarity with the react ecosystem and popular libraries in that ecosystem
• Strong grasp over core web development concepts like HTML5, JavaScript, CSS3, general Web 2.0 techniques, and working without modern component libraries
• Experience with designing secure web applications with a strong understanding of common security vulnerabilities and best practices
• Understanding of data structures, algorithms and object-oriented programming
• Strong grasp over concepts of performance, optimization, lighthouse, etc
• Strong handle over Git, following best practices to facilitate collaboration

• Hands-on experience with supporting payments and integrating payment gateways
• Experience with progressive web apps, service workers
• Strong grasp over frontend unit and end-to-end testing frameworks

Requirements and Qualifications

• Bachelor’s or master degree in engineering
• 7+ years of work experience, 1+ years of experience as a lead
• Proficient understanding of HTML, CSS, and Javascript
• Proficient understanding of ReactJs or similar library
• Good understanding of responsive web development
• Good understanding of SEO and analytics
• Ability to break the business problem into smaller features
• Ability to access the technical feasibility of UI/UX designs
• Build reusable code and libraries for future use
• Optimize application for maximum speed and scalability
• Proficient understanding of cross-browser compatibility