React.js Developer

🚀 Hiring: React.js

⭐ Experience: 2+ Years

📍 Location: Mumbai

⭐ Work Mode:- 5 Days Work From Office

⏱️ Notice Period: Immediate Joiners or 15 Days

(Only immediate joiners & candidates serving notice period)

We’re looking for a skilled React.js Developer to join our growing team! If you love building dynamic, user-friendly web applications and have strong expertise in React.js, JavaScript (ES6+), and modern front-end tools, this role is for you.

✅ Key Skills:

• Proficiency in React.js, JavaScript (ES6+), HTML5, CSS3
• Experience with Redux / Context API
• Strong knowledge of REST APIs & JSON
• Familiarity with Git & Agile development
• Bonus: TypeScript, Next.js, Testing (Jest/Enzyme), UI frameworks (Material-UI/Tailwind)

Job Summary:

We are seeking a highly skilled and hands-on UI Developer with strong expertise in React.js and JavaScript to join our front-end engineering team. The ideal candidate will have at least 5 years of experience in developing scalable, high-performance, and user-centric web applications. You will be expected to contribute immediately, owning development tasks end-to-end — from design and coding to performance tuning and deployment.

 Key Responsibilities:

• Design and develop responsive, high-quality user interfaces using React.js, JavaScript, HTML5, and CSS3.
• Collaborate closely with UX designers, backend developers, and product managers to translate business requirements into technical implementations.
• Write clean, efficient, and reusable code following best practices and modern front-end standards.
• Optimize components for maximum performance and scalability across various browsers and devices.
• Participate in code reviews, ensuring adherence to coding standards and best practices.
• Troubleshoot, debug, and resolve UI-related performance or compatibility issues.
• Stay up to date with emerging front-end technologies and continuously enhance the development process.

 Required Skills & Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• 5+ years of professional experience in front-end/UI development.
• Deep hands-on experience with React.js and core JavaScript (ES6+).
• Strong understanding of HTML5, CSS3, and modern UI frameworks/libraries.
• Experience with React hooks, state management (Redux or Context API), and component-based architecture.
• Familiarity with RESTful APIs and integration of front-end applications with backend services.
• Experience with Webpack, Babel, NPM/Yarn, and modern build tools.
• Solid understanding of version control systems (Git).
• Strong debugging and performance optimization skills.
• Ability to deliver results in a fast-paced, agile environment.

 Good to Have Skills:

• Experience with TypeScript, Next.js, or React Native.
• Knowledge of testing frameworks such as Jest, Mocha, or React Testing Library.
• Familiarity with CI/CD pipelines and DevOps tools.
• Understanding of UI/UX design principles and ability to collaborate effectively with designers.
• Exposure to cloud environments (AWS, Azure, or GCP).
• Experience in performance profiling and accessibility (a11y) best practices

• Job Title - Frontend Software Engineer - Data
• Reports Into - Senior Software Engineer - Data
• Location - Hybrid / Bangalore 

A Little Bit about Kwalee…

Kwalee is one of the world’s leading multiplatform game developers and publishers, with well over 900 million downloads worldwide for mobile hits such as Draw It, Teacher Simulator, Let’s Be Cops 3D, Airport Security and Makeover Studio 3D. We also have a growing PC and Console team of incredible pedigree that is on the hunt for great new titles to join TENS!, Eternal Hope, Die by the Blade and Scathe.

What’s In It For You?

• Hybrid working - 3 days in the office, 2 days remote/ WFH is the norm
• Flexible working hours - we trust you to choose how and when you work best
• Profit sharing scheme - we win, you win 
• Private medical cover - delivered through BUPA
• Life Assurance - for long term peace of mind
• On site gym - take care of yourself
• Relocation support - available
• Quarterly Team Building days - we’ve done Paintballing, Go Karting & even Robot Wars
• Pitch and make your own games on Creative Wednesdays! 

Are You Up To The Challenge?

As a Frontend Software Engineer in the Data Science Team, you will build tools and develop technology that deliver data products to a team of strategists, marketing experts and game developers. You will design, build, test and deploy products which serve a company fuelled by data.

Your Team Mates

The Data Science team is central in developing the technology behind the growth and monetisation of our games. We are a cross functional team that consists of analysts, engineers and data scientists, and work closely with the larger engineering team to deliver products spanning our modern, cloud first, tech stack.

What Does The Job Actually Involve?

• Develop and maintain user-friendly and visually appealing web applications using Vue.js
• Create interactive and informative data visualisations for general audiences as well as highly specialised teams
• Integrate with large, complex data sources and machine learning models via APIs
• Work within a data focused team to increase access to and the understanding of test and analysis results within game development, marketing and other aspects of the company

Your Hard Skills

• Minimum 2 years browser-based programming experience
• A proven track record of programming high quality and innovative web pages using Javascript, HTML5 & CSS3 and relevant frameworks (ideally VueJS but could also be others e.g. ReactJS, AngularJS, Svelte)
• Knowledge of data visualisation libraries and techniques
• Understanding of REST APIs, asynchronous programming, and data handling
• An excellent working knowledge of various database, scripting, and development tools, for example bash, Python, Postgres, MySQL, CouchBase, git, JIRA
• A creative mindset motivated by challenges and constantly striving for the best

Your Soft Skills

Kwalee has grown fast in recent years but we’re very much a family of colleagues. We welcome people of all ages, races, colours, beliefs, sexual orientations, genders and circumstances, and all we ask is that you collaborate, work hard, ask questions and have fun with your team and colleagues. 

We don’t like egos or arrogance and we love playing games and celebrating success together. If that sounds like you, then please apply.

A Little More About Kwalee

Founded in 2011 by David Darling CBE, a key architect of the UK games industry who previously co-founded and led Codemasters, our team also includes legends such as Andrew Graham (creator of Micro Machines series) and Jason Falcus (programmer of classics including NBA Jam) alongside a growing and diverse team of global gaming experts.

Everyone contributes creatively to Kwalee’s success, with all employees eligible to pitch their own game ideas on Creative Wednesdays, and we’re proud to have built our success on this inclusive principle.

We have an amazing team of experts collaborating daily between our studios in Leamington Spa, Lisbon, Bangalore and Beijing, or on a remote basis from Turkey, Brazil, Cyprus, the Philippines and many more places around the world. We’ve recently acquired our first external studio, TicTales, which is based in France. 

We have a truly global team making games for a global audience, and it’s paying off: - Kwalee has been voted the Best Large Studio and Best Leadership Team at the TIGA Awards (Independent Game Developers’ Association) and our games have been downloaded in every country on earth - including Antarctica!

• We are looking for an UI Developer with minimum 3 years of experience in (React.js and/or Angular.js) who is motivated to combine the art of design with the science of programming
• Candidates need to have expertise in user interface designing and developing great user experiences in web and mobile applications

Role :

• Design and development of data-driven, highly scalable web applications with a rich user interface
• The successful candidate will work closely with our Engineering team and bridge the gap between graphical design and technical implementation, taking an active role on both sides and defining how the application looks as well as how it works.

Responsibilities :

• Develop new user-facing features.
• Ensure the technical feasibility of UI/UX design.
• Build reusable code and libraries for future use.
• Optimize application for maximum speed and scalability.
• Assure all user input is validated before submitting it to the backend.

• Proficiency in HTML, CSS, Javascript, Bootstrap, JQuery and AJAX.
• Must have : jQuery, jQuery UI, AJAX, Subversion, JSON/XML, bootstrap, SASS, CSS, HTML, Angularjs or React Js
• Comfortable coding in server side languages (PHP, Python, Java, .net) that drive interface requirements/rendering
• Strong experience taking static images/prototypes and converting to web interfaces
• Experience with consuming JSON/XML data via JS frameworks
• Basic usage of Linux command line
• Understanding of server - side CSS
• Good understanding of Angular JS and/or React JS
• Must have knowledge of cross-browser development
• Experience with graphic design applications such as Adobe Illustrator/captivate
• Experience with responsive and adaptive design
• Utilizing a variety of mark - up languages to write web pages
• Understanding of SEO principles
• Proficient understanding of code versioning tools such as Git and BitBucket.

• Develop new user -facing features
• Build reusable code and libraries for future use
• Ensure the technical feasibility of UI/UX designs
• Optimize application for maximum speed and scalability
• Assure that all user input is validated before submitting to back-end
• Meeting with the development team to discuss user interface ideas and applications.
• Reviewing application requirements and interface designs.
• Identifying web-based user interactions.
• Developing and implementing highly responsive user interface components using react concepts.
• Writing application interface codes using JavaScript following react.js workflows.
• Troubleshooting interface software and debugging application codes.
• Developing and implementing front-end architecture to support user interface concepts.
• Monitoring and improving front-end performance.
• Documenting application changes and developing updates.

• Bachelor’s degree in computer science, information technology, or a similar field.
• Minimum 2 years experience working as a react.js developer.
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Knowledge of REACT tools including React.js, Web pack, Enzyme, Redux, and Flux.
• Experience with user interface design.
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.
• Good project management skills.
  
  About Haber
  At HABER, we are solving the challenges of tomorrow, today. We are bringing together the best minds in process, engineering, computing and chemistry to develop solutions to address some of the world’s toughest challenges – water and energy scarcity and sustainability. Over the past few years there has been an explosion in unstructured data across industry driven by affordable sensing technologies and adoption of analytical instrumentation. This sudden increase in data has resulted in industries spending significant amounts of time collecting, organizing and analysing content and very little time driving value with the data. HABER is focused on reversing this trend by helping our customers spend less time collecting and analysing data and more time using HABER’s platform to drive efficiency, identify issues before they happen and uncover hidden potential. Follow us on Twitter @haber_tech or LinkedIn at linkedin.com/company/haber-technologies or visit us at haberwater.com/careers
  
   

About the Company

Job Description

Experience : 2-3Years

Requirement

• 2 years of experience in frontend development primarily using React .JS
• Knowledge and experience in JavaScript and ReactJS ,HTML,CSS3
• Thorough understanding of NodeJs & React.js(SSR) and its core principles
• Familiarity with RESTful APIs
• Familiarity with modern front-end build pipelines and tools
• Good experience and thorough understanding of React.js and its core principles
• Good experience in UI design and development
• Knowledge of functional and object-oriented programming
• Ability to write well-documented, clean Javascript code
• Ability to understand business requirements and translate them into technical requirement

Regards 
Team Merito

We're looking for developers who are interested in solving problems. We like people who are willing to work across the technology spectrum. 

An example of a typical problem would be a product feature that requires UI/UX (Typescript/React/HTML/SCSS), server changes (Java/Scala/R), and database changes (MySQL).

You will own some or all of a product/feature. You will also mentor others, read and review code, maintain code, deploy code, tune the performance of systems, as required.

Requirements :

- We're looking for 4 years or more of relevant work experience. That being said, if you think you have the necessary skills to make the number irrelevant then do talk to us

- Proficiency in Java, JavaScript, and sufficient knowledge of database concepts to write efficient queries

- Working experience in one or more of React, Redux, Typescript, and associated tools such as Webpack, Grunt, Gulp etc.

- Working experience in HTML, (S)CSS

- Working experience writing unit/functional/integration tests

- Knowledge of Java 8 features such as streams and lambdas is a plus

- Knowledge of REST concepts and design is a plus

- Knowledge of ES6 features/syntax is a plus

- Knowledge of functional programming concepts is a plus

- Knowledge of build/deploy tools such as Ant, Maven, Gradle, Ansible, Chef, Puppet etc. is a plus

- Knowledge of one or more scripting languages such as Awk, Bash, Perl, Python, Rubyetc. is a plus

- Ability to use modern IDEs such as VSCode, IntelliJ IDEA, Eclipse etc. is a plus

- Knowledge of container technologies such as Docker, Kubernetes, etc. is a plus

Bonus Points :

- For product experience. We're a product company. Talk to us if you have worked on software products

- For startup experience. Have you worked in a any startups? We're always looking for people who have startup experience

- If you've developed and deployed any software for your own, or others- use

- If you've contributed to open source projects

- If you've spoken at developer conferences, published articles in tech websites, published podcasts

- If you communicate well. Do you blog? Can you explain ideas clearly and succinctly? Can you answer questions in short, clear sentences?

- If you have technical certifications such as AWS, Docker, Redhat etc.

- If you're self taught. Have you learned other programming languages, technologies etc. on your own? Share the details of the courses you took online, for instance.

- For deep knowledge in one or more areas. We like people who dig down, understand concepts in detail

- If your code/work is out there in public. We'd love to see what you've developed and deployed to the external world