UI 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.

JD for Senior Associate Technology

About Believ-In Technologies Pvt Ltd

We are a rapidly growing software services startup based out in Gurugram, India. We combine passion with the correct concept and assist you in gaining a competitive edge. We have a vision towards helping our clients create trust in the minds of their audiences. Job Description Role- Senior Associate Technology

Experience- 3-4 years

Skills Required- PHP, WordPress, HTML, CSS, JavaScript, JQuery, Ajax, API Integration Tools- JIRA, Asana and other project management tools

Senior Associate Technology Responsibilities:

● Experience in Handling a team

● Experience of taking Client calls

● Experience with custom WordPress themes.

● Designing and managing the website back-end including database and server integration.

● Generating WordPress themes and plugins.

● Conducting website performance tests.

● Ability to solve team queries

Senior Associate Technology Requirement:

● Must have experience in customized plugins and development.

● Should have knowledge of OOPS Concept.

● Experience with core PHP, JavaScript, and HTML/CSS

● Hands-on experience in Woo-Commerce and its add-ons.

● Bachelor’s degree or any similar field.

● Proven work experience as a WordPress Developer.

● Experience working with debugging tools such as Chrome Inspector and Firebug.

● Good understanding of website architecture and aesthetics.

● Ability to manage projects.

Location - Gurugram

Responsibilities:

• Design the overall architecture of the web application.
• Maintain code integrity, and quality, and ensure responsiveness of applications.
• Address and improve any technical issues.
• Building reusable components and front-end libraries for future use.
• Must have strong experience in designing and maintaining a database.
• Work with modern frameworks and design patterns, minimum one-year experience with Full stack paradigm required.
• Handle technical queries raised by the development team and provide support and guidance to them.
• Troubleshoot and debug issues, perform testing, and optimize application performance
• Collaborate with front-end and back-end engineers to design and create advanced, elegant, and efficient systems.

Skills:

• Strong proficiency with 3 - 5 years of experience.
• Expertise in Laravel and a good understanding of other core PHP frameworks using REST APIs.
• Professional, definite communication skills.
• Excellent knowledge of HTML, CSS, Ajax, jQuery, and JavaScript.
• Extensive experience in designing and maintaining databases such as MySQL.
• Mastery of CMS such as WordPress and Magento is an advantage.
• Comprehensive knowledge of version controlling – GIT.
• Creating self-contained, reusable, and testable modules and components.
• Optimizing client and server-side code for maximum speed.

Headquarters : Gurgaon, Haryana

Year founded : 2015

Work Location : Gurugram

Job Description –

Job Role - Software Developer Frontend

Key Capabilities

• Developing new user-facing features using React.js
• 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
• Knowledge of isomorphic React is a plus  

If you think you are one of them then please reply with your interest and we will take your candidature ahead for the next level of evaluation. Below information would be appreciated more:

Current CTC:

Expected CTC:

Notice Period:

Update Resume: please attach

Looking forward to taking you to the next level of technology.