Freelance React.JS developer

Job Title: Senior React.js Developer

Experience: 5+ Years

Location: Pune

Employment Type: Full-Time

Job Summary:

We are looking for a skilled React.js Developer with 5+ years of experience to join our team. You’ll build scalable, high-performance web and mobile applications, work closely with designers and backend developers, and ensure responsive and user-friendly UI/UX across platforms.

Key Responsibilities:

• Develop dynamic, reusable components using React.js, JavaScript, HTML5, and CSS3
• Integrate wireframes and UI/UX designs into functional front-end interfaces
• Ensure cross-browser/platform compatibility and responsive design
• Optimize apps for speed and scalability
• Implement and maintain unit and E2E tests (Jest, Playwright, Puppeteer)
• Integrate with RESTful APIs and backend services
• Maintain code quality and performance standards
• Collaborate with designers, product managers, and backend engineers
• Mentor junior developers and contribute to best practices

Required Skills:

• 5+ years in front-end/UI development
• Strong in React.js, JavaScript (ES6+), HTML5, CSS3
• Experience with Redux, SASS/LESS, REST APIs
• Familiarity with performance optimization tools
• Solid understanding of UI/UX design principles
• Excellent communication and team collaboration skills
• Bachelor’s degree in Computer Science or related field

We're seeking passionate, next-gen minded engineers who are excited about solving complex technical challenges and building innovative, first-of-its-kind products which make a tangible difference for our customers. As a Frontend SDE-1, you will play a key role in driving strategic initiatives, collaborating with cross-functional teams across business, product, and operations to solve exciting problems. This role demands strong technical acumen, leadership capabilities, and a mindset focused on innovation and operational excellence.

We value individuals who think independently, challenge the status quo, and bring creativity and curiosity to the table—not those who simply follow instructions. If you're passionate about solving problems and making an impact, we'd love to hear from you.

Key Responsibilities

• Strategic Planning: Work closely with senior leadership to develop and implement engineering strategies that support business objectives. Understand broader organization goals and constantly prioritise your own work.
• Technical Excellence: Understand the onground problems, explore and design various possible solutions to conclude and implement scalable, extensible and secure software systems. Implement and learn best practices in technical architecture, coding standards, and software testing to ensure product delivery with highest speed AND quality.
• Project and Program Management: Setting up aggressive as well as realistic timelines with all the stakeholders, ensure the successful delivery of engineering projects as per the defined timelines with best quality standards ensuring budget constraints are met. Use agile methodologies to manage the development process and resolve bottlenecks.
• Cross-functional collaboration: Collaborate with Product Managers, Design, Business, and Operations teams to define project requirements and deliverables. Ensure the smooth integration of engineering efforts across the organization.
• Risk Management: Anticipate and mitigate technical risks and roadblocks. Proactively identify areas of technical debt and drive initiatives to reduce it.

Required Qualifications

• Bachelor's or Master's degree in Computer Science, Information Technology, or a related field.
• Excellent problem-solving skills, with the ability to diagnose and resolve complex technical challenges.
• Strong understanding of software design principles and patterns.
• Hands on with multiple programming languages and modern development frameworks.
• Understanding of Rest APIs and Computer Networks.
• Experience with React, Redux and React Native.
• Strong communication and interpersonal skills, with the ability to influence and inspire teams and stakeholders at all levels.

Skills:- Javascript, Typescript, React, Redux, React Native

Exp in React JS,

React Designing, Api Integration, CSS, HTML,JavaScript,Redux,

• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high-quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• 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

Exp: 3 - 6yrs
Notice period : Immediate - Max 60 days
Job Location : Gurgaon

Experience with client side Web technologies/frameworks such as Angular.js 1.x, React.js, Backbone, KnockoutJS, Bootstrap Experience with AngularJS 2+ is a strong plus.

Strong understanding of Web markup with HTML(5) and CSS(3) is a strong plus.

Ability to write high-performance, reusable code for UI components Build and support scalable, re-usable software Ability to work independently and within a team environment

Good written and verbal communication skills Solid understanding of cross-browser/platform consistency and compatibility Experience with frameworks such as jQuery Mobile, ReactNative, Appcelerator, Mootools, Kendo UI, Sencha Touch and ActionScript is a plus

Experience with Node.js, Bower, Yeoman, Gulp etc. is a plus Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS is a plus Proficient understanding of code versioning tools, such as SVN and Git is mandatory.

Sportz Interactive (SI) works with its clients and partners to revolutionize the sports fan experience across consumption points by creating best-in-class, kickass products. SI was founded in 2002 as a B2B sports content business. Through the years, it gained immense reputation for its state-of-the-art hosted solutions, digital simulators, match centers and fantasy games. Sportz Interactive has a fantastic reputation in the online sports community, having worked with clients across the globe including the likes of The International Cricket Council, STAR Sports, Yahoo!, AOL, Eurosport, Castrol, Web 18, NDTV, Nimbus, Times of India, Rediff.com and Singtel amongst others. 

Sportz Interactive provides in-depth sports information and content and specializes in product development for the web, mobile and other interactive platforms. 
http://www.sportzinteractive.net/">www.sportzinteractive.net 

2+ years of experience on web technologies.

Primary Responsibilities:

• Coding and debugging pure JavaScript, polyglot and multi-lingual applications
• Working closely with Technical Lead/Project Manager to ensure development timelines are met
• Contribute with ideas to improve system design or streamline product delivery
• Working with challenging applications involving Real Time Data
• Working on different platforms including the usage of the Native SDKs provided on JavaScript

Required Skills:

Mandatory: Passionate about sports, Problem solving, Team player, Target & Result oriented.

Functional: HTML5, CSS3, JavaScript, Vue.js, Typescript, Stimulus JS, AJAX, Browser performance & optimization, Asynchronous requests handling and partial page updates, Browser Developer Tools, GIT and JIRA.

- We are looking for techies with a passion to develop high-performance web applications. 

- If you are interested and looking to build scalable and high-performance apps, then join us. We are building web app based on React with server-side rendering. For mobile, we are building PWA.

Roles & Responsibilities :

1. Build scalable web applications using ReactJS, Redux and other related libraries.

2. Integrating back-end API's with front-end.

3. Build reusable code and libraries for future use.

4. Optimize application performance and reduce page loading speed.

5. Solid experience in architecting and implementing highly scalable front-ends in modern technologies such as React or Vue.

6. Gathering requirements from design and technical staff and client on web development needs/Defining effective solutions for business and process problems.

• At least 4+ years experience in Angular.js / React.Js
• 4+ years of strong programming experience in UI/Web development using HTML5, CSS, JavaScript, and Bootstrap.
• 2+ years of strong programming experience in Unit Test Code Coverage using Jasmine / Karma.
• Strong in OOAD, design concepts & software engineering fundamentals.
• Strong inclination towards delivering quality software.
• Should be a good team player. Should have experience working in Agile Scrum Teams.
• Excellent communication skills
• Strong experience in defining & implementing software quality improvement measures: CI/CD setup, Jasmine, Karma Unit Testing
• Experience in working with tools like TFS, GIT.
• Should have strong problem-solving skills.

• Experience in UX will be good to have.