



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.

About iRage
About
At iRage, we harness the power of technology and quantitative finance to craft cutting-edge high-frequency trading systems and strategies. Our journey began in 2009, shortly after the introduction of Direct Market Access (DMA) in the Indian markets, which ushered in a new era of possibilities in algorithmic trading.
iRage was founded by a group of passionate quantitative trading professionals who saw the immense potential within this domain. Since our inception, we've been on a relentless pursuit of excellence, aiming to reshape the landscape of algorithmic trading in India.
When you join our team at iRage, you're not just an employee; you're an integral part of our mission to solve some of the most challenging engineering problems in the financial industry. You'll collaborate with exceptional programmers, quantitative analysts, and traders who share your enthusiasm for innovation.
Connect with the team
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Core responsibilities
• Collaborate with product teams to more accurately define new features
• Collaborate with UX in the building of a design system/component library
• Ensure high performance of all systems developed
• Aware of the relationship between development and business with a strong sense of ownership
• Employ the latest techniques such as agile software development
• Basic working knowledge of Unix/Linux
• Excellent problem solving and coding skills in Javascript/Angular
• Strong interpersonal, communication and analytical skills
• Should have the ability to express their design ideas and thoughts
Job Brief
• JavaScript and angular expertise
• Experience with libraries such as bootstrap, Ag-grid, formly, observables, and ngrx
• You enjoy working with new technologies, and are curious and energetic
• Experience working with REST APIs
• Good understanding about authentication and security
• Create and maintain various unit and integration tests
• You enjoy working in a creative and agile environment that moves fast
• Ability and interest in providing mentorship to junior members of the team
• Write high quality code and Conduct code reviews
• Being resourceful and detail-oriented, along with being an outside the box thinker!
• Experience being a great team player, who work collaborative, and brings a positive attitude


Experience with deploying applications on cloud infrastructure, preferably AWS
• Experience in using REST APIs with the front end
• Experience in handling webMap applications using leading webMap Javascript APIs like ReactJS Leaflet, Google Maps Javascript API and Geoserver management
• Experience with the Agile/Scrum development model
• Strong experience in code versioning using Git.
• Strong design, development, and implementation experience.
• Very good experience in React JS, React Leaflet and Redux

Front-end Developer with a passion for sustainability
Are you passionate about the health of our planet and all those who live on it, and want to contribute to a sustainable future for all?
Are you an expert at creating personal relationships and explaining the value of new and disruptive innovations?
And do you want to work with passionate changemakers in an energetic, value-driven, fast-growing startup, as we enter a period of significant international expansion?
Then you might just be the person we’re looking for!
About the Company:
We want to contribute to a better world. And we believe that there is no sustainability without traceability. That is why we are on a mission; to bring transparency to producers who really want to know what they sell, and for consumers who really care what they buy.
TrusTrace is a SaaS provider that helps companies truly understand and take responsibility for their full social and environmental footprint of the products they sell, while enabling consumers to make informed and better choices, through creating fully transparent value chains all the way to product origin. Fueled by AI, IoT, ML and blockchain, the technology is simple, efficient and tamper-proof, ensuring data accuracy and ease of collection, while unveiling the true cost of everything from manufacturing, selling, buying and disposing of material.
With the vision of ‘A Renovated Planet’, we are focusing on industries with a high social and environmental impact; fashion and sustainable retailing, TrusTrace is a rapidly growing category leader, and we have already partnered with 40+ sustainability pioneers like Filippa K, Houdini, Fjällräven, Decathlon, Vaude, Ba&sh, Icebug, Mini Rodini, Layered and Coop, with more joining our community as we speak.
TrusTrace has received numerous awards within sustainability, latest the Solar Impulse label which is given only to companies which apply to the highest standards in sustainability and circular economy, and is on Sifted’s ‘The Nordic Startups and Scaleups to watch in 2021.’
Working with us you will not only get a job – but become part of our family of highly talented individuals with a true passion for sustainability. We’re not into traditional hierarchies, and we run a welcoming and inclusive work culture, where everybody’s ideas and thoughts are valued. We’re just over 100 right now but by the time you’ve finished your application we’ll probably be a couple more! In fact, we’re hiring for several positions right now – so tell your friends!
Front-end Developer:
About the Role:
As a team member at TrusTrace, you’ll get to solve challenging, real-world problems that truly make a difference to society.
This role Front-end involves as a technology has evolved rapidly over the years. At TrusTrace, we leverage modern, cutting-edge frontend technologies to deliver a clean, simple and consistent user experience for the customers of our platform. We use Angular as the primary framework to develop enterprise grade applications. As a frontend developer at TrusTrace you will be contributing to a sustainable future of the planet by developing world-class applications used by top brands in the industry leveraging traceability to create sustainable products.
If you are that passion-driven person who is all about using your creative skills to make an impact by contributing to developing a sustainable future for the generations to come - we would be delighted to have a chat with you to explore how you can fit with the team at TrusTrace.
Experience: (6 – 8 Years) The successful candidate will have
Hands-on experience working with
- Git
- Angular
- Bootstrap, Material-UI, TailwindCSS or any other widely-adapted CSS library/framework
- Sass or other css preprocessors
- NgRx or other state management libraries
- StorybookJS
- Jest or other Javascript unit testing libraries
Skills: The Desired General Knowledge, Skills & Abilities of the successful candidate
- Solid understanding and experience
- Cross-browser compatibility
- Front End optimisation
- Frontend architecture
- REST APIs and integrations
- Object Oriented Programming concepts
- Design Patterns
- TDD (Test Driven Development)
- Agile
We believe people have hidden/unexplored talents. Here are a few we consider are a plus:
Experience with
- Any cloud provider services (AWS/Azure/Google Cloud etc.,)
- Docker or any other virtualization technology
- NodeJS (ExpressJS, LoopbackJS, HapiJS etc.,)
- Interface design tools like XD, Figma
- Developing REST APIs

Requirements
- 2.5+ years of experience in React JS and Redux
- Expert in React.j, ideally using TypeScript language extensions
- Good understanding of JavaScript Design Patterns
- Good experience writing front-end test cases
- HTML5, CSS3 and Responsive web design are mandatory
- Exposure to Scrum methodology and XP technical practices such as unit testing, pair programming, test-driven development, continuous integration or continuous delivery
- Self-motivated, fast learner, detail-oriented, team player and a sense of humour
- Should have experience with Payment(US) Integrations
- Should have experience with Ecommerce/ERP Connectors


We are looking for a good JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.
Requirements
- 3+ years of experience in React JS and Redux
- Expert in React.j, ideally using TypeScript language extensions
- Good understanding of JavaScript Design Patterns
- Good experience writing front-end test cases
- Exposure in React Native is preferred.
- HTML5, CSS3 and Responsive web design are mandatory
- Exposure to Scrum methodology and XP technical practices such as unit testing, pair programming, test-driven development, continuous integration or continuous delivery
- Self-motivated, fast learner, detail-oriented, team player and a sense of humour
ROLE REQUIREMENTS
- Expertise level knowledge of HTML5 : Comprehensive knowledge of tags, HTML API (Geo, Storage, More APIs), Canvas APIs, META Tags and Semantic markup
- Expertise level knowledge of CSS3 : CSS Object Model, Selectors & Hierarchy, Layouts, Responsive Designs, Build Tools, SASS / SCSS & Flexbox
- Expertise level knowledge of ES6: Object-Oriented programming principles, DOM Selectors, Event Handlers, Jquery - Functions, Callbacks, Promises, Debugging tools & approach
- Experience in creating build scripts from scratch using Webpack & Gulp with relevant plugins to improve DevOps
- Ability to independently create technical design of an Epic utilising the knowledge of JavaScript design patterns and CSS best practices
- Experience in reviewing the technical design and implementation of other frontend team members
- Ability to Suggest better alternatives to existing solutions for improving the solution quality (both functional and non-functional problems)
- Ability to coach and line-manage senior frontend engineers, to help them grow their career
- Experience in Typescript and contemporary FE development frameworks like ReactJS, Angular & VueJS is preferred
QUALIFICATIONS & CHARACTERISTICS
- 8+ years of industry experience.
- Analytic and positive mindset with a personable and professional approach.
- Sharp attention to detail and a passion for new technology.
- Professional written and verbal communication.




