UI Developer - Angular (Tier-1 College)

Proficient in React, JavaScript (ES6+), and TypeScript. ● Expertise in state management libraries (Redux, Zustand, etc.). ● Hands-on experience with react-navigation and deep linking. ● Solid understanding of Expo (both managed and bare workflows). ● Knowledge of native development (Swift/Objective-C for iOS, Java/Kotlin for Android). ● Experience with custom native module bridging and native UI integration. ● Strong debugging skills using tools like Flipper and Chrome DevTools. ● Familiarity with Jest, React Native Testing Library. ● Experience with REST APIs, GraphQL, and real-time data (WebSockets). ● Ability to manage OTA updates with EAS Update and configure EAS Build. ● Experience in app publishing and release lifecycle on both Play Store and App Store. ● Knowledge of secure storage, token handling, and app-level security practices.

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.

.Frontend Developer for a Construction Tech startup.Kolkata-based or with roots in Kolkata.

Requirements:React.js,Javascript

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• 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
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial)

• Building Progressive Web App components and features for the companys advanced health-tech platform using React Js, Node Js
• Communicating effectively in a cross-functional product development team and presenting ideas and solutions effectively.

Role and Responsibilities

• Making technology work for small holder farmers is the primary function of this team, the individual joining this team should be self-driven towards creating impact.
• A keen listener and has a pro-active approach to problem solving.
• Should understand the role of digital transformation in a company’s journey.
• An individual who follows technological advancements closely and thinks of new and innovative use cases that such technology can solve.
• Having previous experience in product management and/or platform development projects is a plus.
• Knowledge of software development life cycle and software configuration management tools preferred.
• The candidate should demonstrate high bias-for-action and should drive results that matter to the function and to the entire organisation.
• Build from ground up, a scalable server infrastructure and client applications.
• Design, develop and deploy features and consume APIs with high quality standards.
• Manage the infrastructure hosted in the cloud.
• Contribute significantly in reviewing code, design & test-cases authored by peers.

Qualifications and Education Requirements

• 2-6 years experience of design and development experience building scalable & distributed systems.
• Bachelor’s or Master’s degree in Engineering from reputed institutes.

SKILLS

• Agile Project Management
• Software Development Life Cycle and Software Configuration Management
• Excellent coding, debugging skills.
• Hands-on experience on the following tech stacks:
  ReactJs, NodeJs, TypeScript, PostgresSQL/MongoDB, Nginx, Pm2, Redis, Bootstrap, CSS
• Knowledge of Microservices and REST APIs.
• Must have: Experience with managing server infra in hybrid cloud AWS & GCP.
• Must Have: Very good understanding of OOPS and design patterns.
• Nice to have: Hands-on-experience with analytics using ELK stack/ Mixpanel.

Qualifications:

• Minimum one year of experience in React, Redux 
• Experience with Build systems e.g. Webpack/Grunt/Gulp 
• In-depth knowledge of HTML/XHTML/HTML5 
• Experience with Testing frameworks e.g. Karma/Jasmine/Protractor/Cucumber/Mocha/Jest 
• Experience with interface development toolkits: e.g. Less/SASS 
• Experience with web service integration protocols such as REST & GraphQL 
• In-depth knowledge of Javascript e.g. ES5/ES6/Typescript 
• Strong Knowledge of CSS 3 
• Must be a strong team player 
• Have a good understanding of design and user experience principles. 
• Experience in dealing with cross-browser compatibility requirements 
• Understanding of mobile development best practices (e.g. responsive design, graceful degradation, etc.) 
• Ability to work independently as well as on a team and learn from colleagues 
• Open-minded, flexible and willing to adapt to changing situations 
• Good designing & color combination skills 
• Experience with Git or other version control systems.