
Main Responsibilities
- Develop new product features and new applications within an Agile
- Build reusable code and libraries for future
- Write well-designed, testable, efficient code using the latest development best
- Collaborate with designers to implement and improve design
- Optimize applications for maximum speed and
- Stay up-to-date on emerging
- Contribute to the continuous improvement of the development
Requirements
- Passion to build world class UI design
- 5+ years of experience developing web applications with modern JavaScript programming frameworks, tooling and libraries (such as Backbone, Angular, React, Vue.js, Ember) and CSS pre-processing frameworks (such as Sass or Less)
- Minimum one-year experience in developing js applications in team environment.
- Experience with state management frameworks like Redux
- Experience writing unit tests
- Familiarity with common front-end development tools such as Babel, Webpack, gulp, npm- scripts
- Any experience building, launching or supporting a SaaS product

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Job Title : Frontend Developer (React + Three.js)
Location : Noida
Experience : 2+ Years
Job Description :
We are looking for a Frontend Developer with strong skills in React.js and Three.js to build interactive, high-performance 3D web applications. The role involves creating smooth 3D experiences, optimizing performance, and collaborating with cross-functional teams.
Key Responsibilities :
- Develop responsive and dynamic UIs with React.js/Next.js.
- Implement and optimize 3D visualizations using Three.js/WebGL.
- Manage 3D assets (GLTF/GLB, textures, compression).
- Ensure performance optimization, cross-browser compatibility, and scalability.
- Collaborate with designers and backend teams to deliver seamless experiences.
Required Skills :
- JavaScript/TypeScript, React.js/Next.js
- Three.js / WebGL for 3D rendering & interactions
- State management (Redux, Zustand, Context API)
- 3D asset pipeline (GLTF/GLB, textures, compression tools)
- Performance optimization (profiling, draw calls, FPS tuning)
- API integration (REST/GraphQL)
- Version control (Git)
Role Overview
We’re hiring a Senior Frontend Engineer with 5+ years of experience to build high-performance, scalable, and visually refined web applications. This is a hands-on engineering role focused on architecture, performance, and crafting exceptional user experiences across modern browsers and devices.
You will work closely with design, product, and backend teams to build robust frontend systems, define engineering standards, and ship production-grade features that scale.
What You’ll Build
1. Frontend Architecture & Development
- Build scalable, modular frontend applications using modern JavaScript frameworks
- Architect component-driven UI systems and reusable design libraries
- Implement robust state management and data flow patterns
- Develop responsive, cross-browser experiences with high usability
- Collaborate with backend teams to design API contracts and integrations
2. Performance & Optimization
- Optimize applications for speed, scalability, and accessibility
- Improve Core Web Vitals and page load performance
- Implement code splitting, lazy loading, caching, and asset optimization
- Diagnose and resolve performance bottlenecks in production environments
- Ensure smooth user experiences across low-end to high-end devices
3. UI Engineering & Design Systems
- Build and maintain scalable design systems and component libraries
- Translate Figma or design specifications into pixel-perfect interfaces
- Implement accessibility standards (WCAG) and responsive layouts
- Maintain visual consistency across products and platforms
4. Frontend Platform & Tooling
- Improve build systems, CI/CD pipelines, and developer tooling
- Implement testing strategies including unit, integration, and end-to-end testing
- Establish coding standards, linting rules, and documentation practices
- Support deployment workflows and release management
5. Collaboration & Leadership
- Mentor junior engineers and conduct technical reviews
- Work with product and UX teams to shape user-facing features
- Contribute to technical decision-making and roadmap planning
- Advocate for performance, maintainability, and user-centric design
Technical Stack
Frontend
- JavaScript / TypeScript
- React, Next.js (or similar modern frameworks)
- HTML5, CSS3, Tailwind or CSS Modules
- State management libraries such as Redux, Zustand, or similar
Tooling & Platforms
- Webpack, Vite, Rollup
- Git-based workflows
- Testing frameworks such as Jest, Cypress, Playwright
- REST APIs and GraphQL
Performance & Quality
- Chrome DevTools and performance profiling
- Accessibility tools and audits
- CI/CD pipelines and monitoring tools
What We’re Looking For
Must-Haves
- 5+ years of experience in frontend engineering
- Strong expertise in JavaScript or TypeScript and modern frameworks
- Experience building scalable frontend architecture from scratch
- Deep understanding of browser rendering, performance, and optimization
- Strong grasp of responsive design and accessibility best practices
- Experience integrating APIs and working closely with backend teams
- Ability to write clean, maintainable, and production-ready code
Highly Desirable
- Experience building design systems or UI platforms
- Familiarity with SSR or SSG and performance-driven architectures
- Experience with micro-frontends or large-scale frontend systems
- Exposure to cloud deployment workflows and frontend observability
- Product-focused mindset with strong UX understanding
Technical Challenges You’ll Tackle
- Scaling frontend architecture for complex applications
- Maintaining performance across devices and network conditions
- Designing reusable UI systems across multiple products
- Improving developer productivity and build pipelines
- Ensuring accessibility and usability at scale
Why Join Ctruh
- Work on product-focused engineering, not just UI implementation
- Build systems that directly impact customer experience and engagement
- Ownership of architecture, performance, and engineering standards
- Small, high-caliber engineering team with strong technical depth
- Freedom to experiment and influence product direction
Location & Work Culture
- Work from office: HSR Layout, Bengaluru
- 6-day work week (5 days in office, Saturdays work-from-home)
- High-performance engineering culture
- Fast decision-making environment with strong ownership mindset
Ideal Candidate Profile
- You think in systems, not just components. You care about performance, scalability, and user experience equally.
- You have built production-grade frontend applications, improved engineering standards, and mentored teams.
- You write maintainable code, challenge assumptions, and take ownership of the user journey end-to-end.
Responsibilities
- Interact closely with design, product, and development teams to create elegant, usable, responsive and interactive interfaces across multiple devices.
- Turning UI/UX designs into prototypes, creating excellent interactions from designs, writing reusable content modules and maintainability of the code.
- Implement UI development principles to ensure that the product client-side serves at scale.
- Review and optimize the app usage by monitoring key metrics and rectifying the issues proactively.
- Review and Optimize application usage, by monitoring key metrics, for maximum speed and scalability
- Mentoring and guiding the team members.
- An ability to perform well in a fast-paced environment and bring in optimal flow for rapidly changing design/ technology.
Requirements
- 5+ years of relevant work experience as a web developer, UI developer, Angular Developer or front-end engineer.
- Sound knowledge in HTML, CSS & JavaScript.
- Familiar with UI layouts, SASS, Bootstrap, and the CSS GRID system
- Proficient with Typescript (Angular 2 & above)
- Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, and other web services used in the system.
- Passionate to create good design and usability
- A team player with excellent communication skills
UPCRED powers AI-Recommendation on Social Content Creators, helping them discover content monetisation and helping Brands/Businesses explore Influencer Marketing.
The company’s advert platform is powered by artificial intelligence, which is used by businesses for Influencer Discovery, Campaign Management, and Campaign Analytics through UPCRED Pixel Management.
Our technology visions to have one-third of the world's social consumers discover new things through recommendation feeds from their favourite social media creator and which connects advertisers to these audiences to grow their business.
UPCRED Social has long-term partnerships with a variety of digital content creators and has the vision to democratize the social earning for content creators in India.
UPCRED Advert wants to be an all-in-one influencer marketing platform designed to help businesses own their influencer relationships.
Responsibilities:
The React Developer will own and drive web development—including decisions about tools, technologies, and processes - for UPCRED.
This is an incredible opportunity for anyone interested in being a part of a high-performing, fast team with a massive learning curve. Our team moves fast and develops world-class products by pushing the boundaries of React development. If hired, you will be part of UPCRED's in-house Product & Engineering team.
Develop cross-browser & cross platform supported web applications in React which customers love using.
Work with product, design, backend teams to develop features.
Work on bindings and integrations required with react libraries & REST api's.
Plan, estimate, and delivery your project with minimal supervision.
Skills:
1 - 5 years of React experience with some hands-on experience with web application development.
Experience with React Ecosystem (React Router, Styled-components, Server-side rendering, Context API, React Hooks) is strongly preferred.
Experience with state management libraries such as Redux or MobX is a huge plus.
Proficient understanding of cross-browser compatibility issues and ways to work around such issues
Understanding of REST APIs, the document request model, offline storage, state
management.
Experience with Content/Video-based website.
Understanding of Social Video-based web Architecture
HOW?
Apply, and let us know your interest?
UPCRED, that's how we grow, fair and transparent!
Note: Candidates who is having a notice period of more than 45 do not apply
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
As a Senior Experience Technologist, you’ll be working as part of an agile team with other passionate, driven, and talented people, creating innovative solutions for our clients. Your primary responsibilities will include developing interactive web-based, mobile, and/or desktop applications using Sapient as well as industry best practices to deliver high value and quality to Publicis Sapient clients.
What are we looking for in you?
• Technical end-to-end design for stories by collaborating with business analyst/product owner, technical architect and clients
• Implement stories end-to-end, which includes Frontend, Backends for Frontend (BFF), Caching and also service orchestration in some cases) using best engineering practices like test-driven development, SOLID principles and consideration of non-functional requirements like performance, scalability, security or cloud readiness (as applicable) at the story level
• Automates testing at unit, module and integration level as needed using tools relevant for the platform (e.g. Jasmine, Jest, Karma, Webdriver.io etc.)
• Focus on quality by implementing best practices like logging, calling out technical debt, meeting KPIs using code quality tools like SonarQube, ESLint (customize and sync with Sonar), Stylelint/Sasslint and so on.
• Hands-on with automating redundant work, like common component structure, both in terms of scaffolding as well as using the right design patterns / creating abstractions.
• Mentor junior engineers in helping review code, guiding on technical decision making
Key Requirements:
• 4-9 years’ experience
• Hands-on knowledge of HTML5, CSS3, JavaScript
• Hands-on experience working with Object Oriented JavaScript (OOJS), JavaScript - and practical uses in building complex interactive experiences, primarily with ECMAScript 2015+. You should be up-to-date with new specifications (different stages), and also, using transpilers like Babel to use features from all stages
• Good understanding of creational and structural design patterns in JavaScript
• Experience working with Single Page Applications (SPA) with universal rendering capabilities.
• Good understanding of React.js, its core principles - lifecycle methods, virtual DOM etc. and at least 6 – 12 months hands-on experience with the same
• Understanding of one-way data flow and the Flux architecture.
• Understanding of stateful (container) vs stateless (presentational) components and how to break down the application page into components
• Core understanding of how React’s state management works out of the box.
• Understanding of different CSS architectures that go hand-in-hand with React.js application development. Pros and cons of component-level CSS vs global and where to apply each
• Thorough understanding of Webpack bundler (version 2+).
• Good understanding of the Web Components standard.
• Hands-on experience with building Progressive Web Apps (PWAs) on any framework.
• Hands-on experience with Frontend Performance Optimization – especially in a React application with respect to resource loading strategy, CPU/Memory profiling on the browser.
• Hands-on experience with test-driven development using Jest or equivalent. Familiar with snapshot testing, code coverage. Experience working with utilities like Enzyme
• Experience using fluid grids, and building responsive/adaptive websites using Bootstrap etc.
• Understanding of SEO and accessibility and making it part of the development workflow
• Moderate to Strong graphics manipulation/optimization skills using Photoshop is a plus.
Knowledge & experience of the below skills will earn additional brownie points:
• Logically understands relational databases like MySQL and non-relational databases like MongoDB and can manage to work with it.
• Hands-on experience with GraphQL.
• Hands-on experience working with client-side templating languages like Handlebars, Mustache, etc.
• Hands-on experience with Functional Programming (FP)
• Hands-on experience working with frontend build systems and automating the same using any task runner
• Understanding of hybrid vs native mobile apps – and pros/cons with respect to PWA.
Hands-on experience working with server-side JavaScript frameworks like Express, Koa, Hapi etc. (based on Node.js
• Good understanding of REST APIs and Microservices. Should have an understanding of how resources are organized and how an application should align based on the same. You are expected to have an understanding of how CRUD operations map to HTTP methods for a well-designed service.
• Hands-on with DevOps pipeline and able to tweak/change build/deployment pipeline as needed in the context of a module (e.g. Jenkins / Travis / Now.sh / Gitlab)
• Experience with configuring Webpack from scratch and working knowhow of Rollup / Parcel.
Education:
Bachelors in Computer Science or equivalent education covering Math, Algorithms, Data Structures, Networking, Databases, Operating Systems, Graphics.
About us: At Publicis Sapient, we enable our clients to thrive in Next and to create business value through expert strategies, customer-centric experience design, and world-class product engineering. The future of business is disrupting, transforming, platforming, and becoming digital to the core. We see it in every major industry, from financial services to automotive, consumer products, retail, energy, and travel. We are looking for people who have the courage to break out of what has always been to go do what will be. If you have an optimism that says there is no limit to what we can achieve in this exciting time, then we should talk. Our work is fueled by challenging boundaries, multidisciplinary collaboration, highly agile teams, and the power of the newest technologies and platforms. Our people thrive because of the belief that it’s both our privilege and
responsibility to usher our clients and the world into Next. We are seeking those deeply skilled, bold, collaborative, flexible, and who want to reimagine the way the world works to help businesses improve the daily lives of people, and the world. This is the world-class engineering team where you should build your career.
-Previous experience working as a react.js developer.
-Javascript proficiency,
-Thorough understanding of React.js & Node js principles
-Experience with popular Reactjs workflows, Redux
-Experience with data structure libraries
-Familiarity with Restful Apis
-Familiarity with benchmarking and optimization
-Familiarity with front-end build pipeline & tools
-Ability to understand business requirements and translate them into technical requirements
-Agile methodology and scrum.
-Excellent troubleshooting skills.
-Good project management skills
-In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
Required Skills -
1) Redux
2) SDK / Websdk integration
3) Stripe Js
4) Auth2.0
5) Axios
6) worked on any live streaming app/ video calling using react js
preferable( zoom calling / Twilio video calling integration / webrtc)
Basics of React:
1) components in React
2) JSX
3) Virtual DOM vs Real DOM
4) Diff b/w ES5 and ES6
5) How React is diff from Angular
6) Reducer
Company Introduction
Juvoxa is a healthtech startup which enables an Integrated channel of pharmaceutical companies, Medical Professionals/ Institutions, and Patients for Digital Prescriptions 2.0. We enable effective dissemination of right information, tools and help in capturing right data at specific points for increased efficacy of the overall care. With Juvoxa, all stakeholders increase engagement, save money, and reduce friction in healthcare systems. This is accomplished in one secure, transparent, and convenient platform. Juvoxa is founded by serial entrepreneurs and funded by Industry professionals.
Job Description // React Frontend Programmer
With major Pharmaceutical companies adopting us for rollout in South East Asia, we are scaling our engineering team.
What you will do
- Implement unit testing, example Junit, to support development of test-driven development
- Write reusable, Testable and efficient code
- Develop new client-side ReactJS components for modern web and mobile applications
- Design scalable frontend architecture
- Improve product quality through code reviews, write effective unit tests and collaborate with Q&A to implement automation testing
- Contribute to open source, write your experiences, mentor others and proactively improve
What you will have
- Strong teamwork, coordination, and planning, self-managed
- Experience working remotely & as part of a distributed engineering team
- Strong problem solving skills are essential.
- English Skills (ability to effectively communicate via written and spoken english).
- Minimum 2 years of software engineering experience in frontend development particularly ReactJS
- Proficiency in web and mobile frontend development; ReactJS, JavaScript, JSON, HTML 5, CSS, LESS, GIT
- Strong knowledge of state management libraries; Redux
- Complete understanding on development of Progressive Web Applications and web workers
- Familiarity with AWS
- Knowledge of Test frameworks like Jest, Mocha, React Testing Library
- Experience with styled-components is desirable
- Exposure to page speed improvement techniques including state management
- Work on automation to actively measure and improve quality and performance of our frontend apps
What we will provide
- Startup-like environment and culture, fast paced and with quick decision-making process
- A unique startup that has both the ability to work directly with senior leadership but also the structure that comes from being founded by Entrepreneurs who have built for scale.
- An environment to be heard, opinion will be valued and you will have the resources to do your best work ever.
- Compensation at par with market plus equities and we are 100% remote for now.
- Life-long learning and supporting the development of the team, including wealth creation
Dear recruitment agencies and recruiters, please note that we choose to recruit directly for this role. You are expressly requested to not contact Juvoxa or any of its employees in relation to this vacancy or with any offers of your services. Thank you.













