React.js Developer

We are seeking a highly skilled React JS Developer with exceptional DOM manipulation expertise and real-time data handling experience to join our team. You'll be building and optimizing high-performance user interfaces for stock market trading applications where milliseconds matter and data flows continuously.

The ideal candidate thrives in fast-paced environments, understands the intricacies of browser performance, and has hands-on experience with WebSockets and real-time data streaming architectures.

Key Responsibilities

Core Development

• Advanced DOM Operations: Implement complex, performance-optimized DOM manipulations for real-time trading interfaces
• Real-time Data Management: Build robust WebSocket connections and handle high-frequency data streams with minimal latency
• Performance Engineering: Create lightning-fast, scalable front-end applications that process thousands of market updates per second
• Custom Component Architecture: Design and build reusable, high-performance React components optimized for trading workflows

Collaboration & Integration

• Work closely with traders, quants, and backend developers to translate complex trading requirements into intuitive interfaces
• Collaborate with UX/UI designers and product managers to create responsive, trader-focused experiences
• Integrate with real-time market data APIs and trading execution systems

Technical Excellence

• Implement sophisticated data visualizations and interactive charts using libraries like Chartjs, TradingView, or custom D3.js solutions
• Ensure cross-browser compatibility and responsiveness across multiple devices and screen sizes
• Debug and resolve complex performance issues, particularly in real-time data processing and rendering
• Maintain high-quality code through reviews, testing, and comprehensive documentation

Required Skills & Experience

React & JavaScript Mastery

• 5+ years of professional React.js development with deep understanding of React internals, hooks, and advanced patterns
• Expert-level JavaScript (ES6+) with strong proficiency in asynchronous programming, closures, and memory management
• Advanced HTML5 & CSS3 skills with focus on performance and cross-browser compatibility

Real-time & Performance Expertise

• Proven experience with WebSockets and real-time data streaming protocols
• Strong DOM manipulation skills - direct DOM access, virtual scrolling, efficient updates, and performance optimization
• RESTful API integration with experience in handling high-frequency data feeds
• Browser performance optimization - understanding of rendering pipeline, memory management, and profiling tools

Development Tools & Practices

• Proficiency with modern build tools: Webpack, Babel, Vite, or similar
• Experience with Git version control and collaborative development workflows
• Agile/Scrum development environment experience
• Understanding of testing frameworks (Jest, React Testing Library)

Financial Data Visualization

• Experience with financial charting libraries: Chartjs, TradingView, D3.js, or custom visualization solutions
• Understanding of market data structures, order books, and trading terminology
• Knowledge of data streaming optimization techniques for financial applications

Nice-to-Have Skills

Domain Expertise

• Prior experience in stock market, trading, or financial services - understanding of trading workflows, order management, risk systems
• Algorithmic trading knowledge or exposure to quantitative trading systems
• Financial market understanding - equities, derivatives, commodities

Technical Plus Points

• Backend development experience with GoLang, Python, or Node.js
• Database knowledge: SQL, NoSQL, time-series databases (InfluxDB, TimescaleDB)
• Cloud platform experience: AWS, Azure, GCP for deploying scalable applications
• Message queue systems: Redis, RabbitMQ, Kafka, NATS for real-time data processing
• Microservices architecture understanding and API design principles

Advanced Skills

• Service Worker implementation for offline-first applications
• Progressive Web App (PWA) development
• Mobile-first responsive design expertise

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field (or equivalent professional experience)
• 5+ years of professional React.js development with demonstrable experience in performance-critical applications
• Portfolio or examples of complex real-time applications you've built
• Financial services experience strongly preferred

Why You'll Love Working Here

We're a team that hustles—plain and simple. But we also believe life outside work matters. No cubicles, no suits—just great people doing great work in a space built for comfort and creativity.

What We Offer

💰 Competitive salary – Get paid what you're worth

🌴 Generous paid time off – Recharge and come back sharper

🌍 Work with the best – Collaborate with top-tier global talent

✈️ Adventure together – Annual offsites (mostly outside India) and regular team outings

🎯 Performance rewards – Multiple bonuses for those who go above and beyond

🏥 Health covered – Comprehensive insurance so you're always protected

⚡ Fun, not just work – On-site sports, games, and a lively workspace

🧠 Learn and lead – Regular knowledge-sharing sessions led by your peers

📚 Annual Education Stipend – Take any external course, bootcamp, or certification that makes you better at your craft

🏋️ Stay fit – Gym memberships with equal employer contribution to keep you at your best

🚚 Relocation support – Smooth move? We've got your back

🏆 Friendly competition – Work challenges and extracurricular contests to keep things exciting

We work hard, play hard, and grow together. Join us.

• Great knowledge of Javascript
• Minimum experience of 6 months to 1 year
• After 3 months, assured permanent job.
• Must have knowledge of Three.js 
• Energetic and eager to tackle new projects and ideas

Type, Location

Chennai, Tamil Nadu, India

Desired Experience

1+ years

Job Description

● Understanding of how to build performant, decoupled, testable, and maintainable code

● Sharing knowledge with teammates, and working collaboratively when you need help

● Advocate for improvements to product quality, security, and performance

● Craft code that meets our internal standards for style, maintainability, and best practices for a high-scale web environment. Maintain and advocate for these standards through code review

Qualification:

● 1+ years of experience preferably in a tech startup

● Strong foundation in server-side programming languages like Angular, AWS and DevOps

● Experience with containerization (Docker etc.) and cloud technologies

● Experience with automation and building CI/CD pipelines

● Demonstrated capacity to clearly and concisely communicate complex

technical, architectural, and/or organizational problems and propose thorough

solutions

● Experience with performance and optimization problems and a demonstrated

ability to both diagnose and prevent these problems

● Comfort working in a highly agile, iterative software development process

Job Description

It is a platform for parents to find and book kids' activity classes in their neighbourhood.

We are currently hiring a Frontend developer for a startup in the B2C marketplace space based out of Mumbai.  This startup is an Online Marketplace, that serves as a Discovery and Booking Platform for Kids’ Activity Classes. Operations were launched in  November 2019, and have over 20KParents and 500+ educators listed on our Platform across the major Tier-I and Tier-II cities in India.

Platform details are listed below :

1. A SaaS platform for educators to simplify the management of their classes and workshops.
2. Educators get access to a dashboard and use our Class Management tool to create listings, view registrations, manage bookings and payments.
3. The dashboard also provides analytics for teachers to track visitor traffic, see drop offs and understand which social media channel generates maximum ROI for them.
4. Discovery & Booking Platform for parents so that they can search, view and book classes and workshops for their children.

Top 2 role must have’s

1. You should have REACT JS experience of building a product
2. You should be willing to work in a very early stage startup

Tech skills required for this role:

• Front end design in REACT JS at least 1.5 years
• AWS server
• Mongo Database
• API's written in Nodejs

• 8+ years of experience with one of the top frontend frameworks - React (preferred) and with App development (recommended)
• Demonstrated experience in managing  successful engineering teams across both web and app development
• Solid understanding of modern CSS methodologies like SCSS, SASS
• Exposure to latest developments in UI development like PWA, Single Page Apps, Hybrid Apps, Responsive web design etc
• Deep understanding of Javascript topics including the V8 Engine, Async, Memory
• Management, Duplex Communication.
• Understanding of app development practices
• Prior startup experience is a plus

• You will be working together with fellow junior and senior Frontend developers, helping to improve the group's skill level and exchanging new ideas.
• On a daily basis, you write JavaScript/Typescript/ES6/Angular/React and HTML5, CSS3 (SASS/LESS/Stylus)
• Closely collaborate with designers and the rest of the technical team (Backend, DevOps, QA) to make sure we’re all aligned.
• You will manage projects with open-source JavaScript and TypeScript libraries and frameworks (we're big on React and Angular), and explore new technologies (GraphQL, AppSync, Apollo).
• Code reviews are, of course, a part of your responsibilities as well as providing high-quality work.
  
  

What it takes to excel in this role

• Strong core JavaScript and TypeScript
• Minimum 4 years experience in front end development
• 5+ years of JavaScript development experience
• Minimum of 2 years of experience with either, Angular 5+ or React
• Experience with Webpack/Grunt/Gulp or other automated build tools
• Experience with Jasmine/Jest or other JavaScript testing frameworks and tools
• Strong Experience with HTML, CSS, SASS/LESS/Stylus
• Experience with JSON, REST, Web Services
• Experience with working in an Agile environment
• Good communication(in English) and consultancy skills
• Affinity for working in a flexible, diverse and fast growing environment
• Proactive mindset focused on teamwork and continuous improvement - we want to grow together with you
  
  

• Experience with AWS
• Experience with React Native
• Experience with GraphQL, PWA, NodeJS

• 💰 Early-stage, ed-tech, funded, growing, growing fast.
• 🎯 Mission Driven: Make Indonesia competitive on a global scale.
• 🥅 Build the best educational content and technology to advance STEM education
• 🥇 Students-First approach
• 🇮🇩 🇮🇳 Teams in India and Indonesia

• You primarily identify as a Frontend Engineer or a UI Engineer and are comfortable working on the browser side of things with 7+ years experience (preferably from B2C startup companies).
• You can build accessible interfaces with semantic HTML, CSS, and Javascript.  
• You can build reusable, performant, and well-tested web applications that are responsive and work across various devices and platforms.  
• You can build features from scratch which are modular and scalable. You don’t hesitate to take them from design to implementation.
• You have shipped code to production recently and regularly.
• You are experienced in working with using modern web frameworks, like React, Vue, and friends. We use React but prefer people with strong web concepts and fundamentals who are open to learning any framework/library. 
• You are fluent in using the tools of the trade: editors, git, command line, Slack, Jira (unfortunately yes)
• You are driven, you care about turning in quality work, and improving your craft.
• You have high integrity, and you are reliable.

• Mentorship and continuous improvement are a part of the team’s DNA. We have a battle-tested robust growth framework. You will have people to look up to and people looking up to you.
• We are a people-first, high-trust, high-autonomy team.
• We live in the TDD, Pair Programming, First Principles world

• Distributed does not mean working in isolation, feeling alone, being buried in Zoom calls.
• Our leadership team has been WFH for 10+ years now and we know how remote teams work. This will be a place to belong.
• A good balance between deep focussed work and collaborative work ⚖️

• 30-minute alignment check and screening call
• A short take-home coding assignment, no more than 2-3 hours. Time is precious.
• Pair programming interview. Collaborate, work together. No sitting behind a desk and judging.
• In-depth engineering discussion around your skills and career so far.
• System design and architecture interview for senior roles.

• Bring your software engineering — both individual brilliance and collaborative skills.
• Bring your good nature — we're building a team that supports each other.
• Be vested or interested in the company vision

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• Prior experience with popular React.js workflows (such as Flux or Redux)
• Familiarity with more current specifications of EcmaScript
• Prior experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Familiarity with HTML / CSS
• GIT experience is a plus
• 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

Job Role- Senior Front-End Developer

Location- Remote (WFH)

Experience- 5+ years

Work Shift- Uk Shift

Note- must have a strong command of both written and spoken English.

We are looking for a number of strong developers - with strong front-end experience.

We are a full-service Digital Agency & Software Development Company based in UK. We develop high end bespoke software & applications, mobile apps and websites across all sectors, both commercial and not-for-profit.

• 5+ years professional experience
• Exceptional proficiency in building component-based web apps in JavaScript and TypeScript using Vue 2 & 3. 
• Expertise in client-side state management tools, specifically Vuex.
• Good understanding of client-side app architecture.
• Excellent knowledge of CSS and experience in writing stylesheets in SASS
• Integrating web service calls/remote data/APIs
• Proficient understanding of git
• Clear and concise written and oral English communication skills.
• Compilation, bundling, and packaging via Webpack, Babel, etc.
• Strong UI/UX skills
• Node.js and npm
• React Native experience seen as a bonus

• Working closely with your team to develop and deliver high-end solutions using Agile methodologies
• Translating designs into pixel perfect elegant Vue.js code
• Coding and deploying new features
• Ensuring our web applications and components are accessible, responsive, performant, and bug-free for recent versions of web browsers across all popular platforms.
• Ensuring all code is readable, well documented and testable
• Working on some new developments, some significant enhancements to existing system and some support activities