React.js Developer

Position: Frontend Engg (Angular)

Exp Level: 2-4 years

Key Responsibilities

• Develop, test, debug and document new and existing components to ensure that our software meets business, quality and operational needs.

• Focus on scalability, speed, cross-browser compatibility, security, and availability of all applications and processes.

• Collaborate with peer organizations, devops, support organizations on technical issues and provide guidance.

• Work with a team to troubleshoot code level problems quickly and efficiently.

Required Skills:

• 2-4 years of professional software engineering experience in Angular

• Detail oriented and conscientious in implementing designs you have signed off on

• Self-motivator with strong communication skills

• Degree in computer science or a related field is preferred, but not required

• Designing and developing user interfaces using Angular best practices.

• Thorough knowledge of Angular modules, components, services, routing, web pack, material, flex box.

• Proficiency with fundamental front-end languages such as HTML, CSS, and JavaScript.

• Good to have - Experience with Agile methodologies

• Integrating front end UI with constructed APIs.

• Experience with NgRx and Rxjs for state management and reactive programming.

• Familiarity with tools like GitHub and Azure.

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.

Company Description

We are a leading technology and design company that stays ahead of the curve, with over a decade of experience and 400+ successful projects, we offer business-to-business solutions that create engaging digital experiences for large enterprises across industries. Our solutions are built on development expertise, design thinking, and innovative technologies. We follow an agile methodology to deliver exceptional user experiences. Our creative solutions not only look amazing but also produce measurable results.

Our team of experts in development, design, and technology possess diverse skill sets, including UX/UI design, quality engineering, JavaScript frameworks, content strategy, branding, AI and machine learning, and product engineering.

We believe in the pursuit of excellence, building strong partnerships, taking ownership of our work, and embracing feedback every step of the way. We prioritize the personal and professional success and well-being of our team members, and our culture is centered around purposefully connecting design, code, and people to make a meaningful impact across the world 🌎

Join us https://www.qed42.com/careers

Job Description

What you will be doing :

• Building high-performance mobile apps with React Native.
• Responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure.
• Building a product that is a highly collaborative effort
• Collaborate with cross-functional teams (.e.g. Backend, Product Manager and UX Designer) to define design and ship new features
• Mentor other developers
• Ensure the performance, quality and responsiveness of the applications

What we are looking for:

• 4-7 years of relevant experience in React-Native
• Hands-on experience in the full life cycle of Android or iOS application development and
• Hand on experience in React-Native.
• Experience with third-party libraries and APIs.
• Hands-on experience of creating mobile app GUI
• Strong knowledge of product development life cycle and mobile app deployments
• Knowledge of version control (Git) and coding best practices
• Minimum 2 Live mobile applications on Playstore to showcase.

Qualifications

• UG: BCA in Computers, B.Tech/B.E or any relevant specialization
• PG: MCA, M.Tech

Additional Information

What you will get:

• An open and collaborative work environment where you will be respected, challenged, and valued for your merits.
• Strong leadership and mentorship, a clear career path, and a supportive environment.
• A company that is proud of the quality of its work and invested in your personal development & well-being.
• A team that respects openness, does its job well, values customers, and plays fairly.
• Individuals who are fun to work with are invested in each other's growth and take their values seriously.
• Flexible work schedule so long as you uphold your commitments to your family, team, and clients.
• Competitive salary, incentives, insurance, and other perks.
• An online portfolio showing multi-platform, standout work.

Requirements:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
• Experience with Core web fundamentals: HTML, JavaScript, and CSS like Sass or LESS
• Thorough understanding of ReactJS and its core principles.
• Experience with popular ReactJS state management such as Redux or Flux
• Familiarity with newer specifications of EcmaScript (ES6+)
• Familiarity with RESTful APIs consumption
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements
• Familiarity with code versioning tools such as GitLab, Bitbucket
• Must be passionate about writing clean, efficient, and maintainable code
• Self-starter with the ability to cope with sharp learning curves.
• Excellent teamwork skills,
• Good Communication skill

Good to have:

• Familiarity with NextJs framework.
• Experience with Unit Testing with Jest
• Typescript
• GetsByJS
• Modern front-end build pipelines and tools GitLab or Jenkins
• CI-CD Using GitLab or Jenkins

• Work with creative and business partners to understand, build, and adjust web application functionality and visual presentation to support business goals
• Develop reusable, maintainable, accessible cross-platform HTML, CSS, and JavaScript for front end web application components while adhering to web and team standards
• Working in an AT/CI/CD paradigm develops with testing in mind; authors unit tests to provide sufficient testing coverage for each developed component
• Identifies opportunities to optimize and improve front end performance
• Remain curious and current with new developments in front end web development industry

Qualifications

• 0-2 years of practical front-end web development experience in writing and testing valid, web standards-based HTML, CSS, JS
• Understanding of basics of computer science such as Object-Oriented Programming, Data Structures, Development Patterns
• Good experience in front end development with both technical and visual expertise
• Some exposure to agile methodologies and supporting practices, tools, and technology
• Comfortable learning new technologies, tools, development/CI/CD processes, and best practices
• Ability to collaborate effectively with teams across different locations
• Possess effective verbal communication, writing, and presentation skills
• Analytical thinker with attention to detail
• E-commerce experience is a plus
• Knowledge of WCAG 2.0 AA is a plus
• Experience with react framework a plus
• Bachelor’s degree or equivalent relevant experience

Frontend Developer.

Experience: 3 - 5 years

Skills: React , UI Development, JavaScript,  HTML5, CSS , J Query, JSON, Bootstrap, Typescript, 

Optional:  jasmine, karma

• Responsible to develop web applications using React.
• Write and maintain the front-end code of web applications & To work in UI development.
• Experience in Responsive / Material UI Development.

• Able to interact with the team and understand functional requirements and create design documents for new features.
• Exposure to bug fixing, maintenance, continuous integration releases.
• Participate in sprint planning and story elaboration sessions.
• Candidate should be able to work independently in an Agile project.
• Experience with Test-Driven Development, Integration testing and Agile processes.