
Responsibilities :
· In-depth knowledge in web markup, including HTML5, CSS3, client-side scripting, and JavaScript frameworks, including jQuery
· Good understanding of asynchronous request handling, partial page updates, and AJAX
· Deep knowledge of Angular 2+ (Typescript)
· Strong knowledge of CSS3 extended languages such as SASS / LESS
· Implementing responsive design for mobile sites
· Ability to write high-performance, reusable code using JS best practices.
· Experience in code optimization and refactoring.
· Experience working with theme frameworks like Bootstrap or any Material Design libraries
· Comfortable with JSON data manipulations
· Good understanding of cross-browser compatibility issues and ways to work around them
· Experience with version control, such as Git
· Testing the site during development for usability and fixing any bugs.
· Cooperating with web designers to match visual design intent.
· The role requires constant interaction with other developers in the team
Kindly revert with your updated resume
THANK YOU

About Semperfi Solution
About
Connect with the team
Similar jobs
What we hope you will bring to the role:
· Bachelor or MS degrees in Computer Science or Engineering, or equivalent experience from a Tier-1 College ONLY
· Minimum 6+ years of front end design and development experience
· Experience with large-scale website architecture
· Strong experience with Angular Typescript framework and RXJS(Angular 13+), CLI and
state management
· Some experience with AngularJS
· Strong experience wri:ng unit tests in Karma framework
· Strong experience with HTML5, SCSS(Tailwind, Bootstrap 3 and 4, SASS), Angular
Material and JavaScript(ES5/ES6)
· Some experience migra:ng exis:ng AngularJS applica:ons to the latest Angular
Framework, while preserving accessibility compliance and mobile responsiveness
· Comfortable reviewing code(sugges:ng best prac:ces)
· Strong experience with mobile first and responsive web design
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.
• Relevant experience in React JS 5+ Year
• Experience in Hooks, Typescript
• Experience in GraphQL (Query & Mutations)
• Strong experience in Jest for Unit Testing
• Knowledge on docker, K8 and Kafka
The primary purpose of this internship is to provide freshers with knowledge in web development. We conduct weekly communication classes to enhance communication skills. Additionally, special orientation classes covering topics such as customer satisfaction and work ethics. You will be given training on interview preparation. Our training method simulates the corporate training approach, where students report to their mentors. By the end of this internship, you will have a strong foundation in web development.

- Skills: Angular 2+, JavaScript, HTML, CSS.
- Experience: 5-9 years.
- Experience with JavaScript libraries and frameworks.
- Should have strong sense of web design and attuned to the fundamentals of user experience.
- Should able to design, build and maintain efficient, reusable, and reliable front-end code.
As part of our Developer team you will get high quality experience in a young, high energy, friendly, fun and professional environment where people work together as a family. Our employees are constantly learning, upgrading their skills, developing their competences and finding ways to fully use their potential.
Aura Global Developers professionals work with innovative technologies, build world-class products and cooperate with global customers. Being part of Aura Global means working in an independent, well-organized and collaborative team.
SKILLS NEEDED - React Native, React JS, GraphQL, Postgres SQL
-3 to 7 years of experience is required.
-Should be able to handel a team.
-Designing and developing user interfaces using React JS best practices.
-Adapting interface for modern internet applications using the latest front-end technologies.
-Writing JavaScript, CSS, and HTML.
-Developing product analysis tasks.
-Developing application codes and unit tests in React Native and GraphQL Services
-Consulting with the design team.
-Ensuring high performance of applications and providing support.
-Ensuring optimal performance of the central database and responsiveness to front-end requests
-Collaborating with Back-end developers on the integration of elements
-Designing customer-facing UI
-Developing high-performance applications by writing testable, reusable, and efficient code
-Implementing effective security protocols, data protection measures, and storage solutions
-Running diagnostic tests, repairing defects, and providing technical support
-Technical Experience: React JS, React Native, GraphQL.
-Good Analytical skill to analyze Product Requirements, Agile Methodology and Process Knowledge of Banking Payment Gateway Domain is added advantage Actively participate in Agile Daily stand up and Jira
-Professional Attributes Able to work independently
-Educational Qualification: BE
Contact: SEVEN THREE FIVE EIGHT THREE THREE SEVEN FOUR NINE FIVE.
- Proven work experience as a Front-end developer
- Hands on experience with markup languages
- Experience with JavaScript, CSS and jQuery
- Familiarity with browser testing and debugging
- In-depth understanding of the entire web development process (design, development and deployment)
- Understanding of layout aesthetics
- Knowledge of SEO principles
- Familiarity with software like Adobe Suite, Photoshop and content management systems
- An ability to perform well in a fast-paced environment
- Excellent analytical and multitasking skills
- BSc degree in Computer Science or relevant field
Responsibilities:
-
Works as part of a team to continually refresh and enhance our users’ web experiences using an Agile Development Methodology.
-
Build and ship features with an understanding of Javascript, CSS and HTML best practices.
-
Coordinate with back-end engineers to provide a cohesive experience.
Must-Have:
-
2+ years of extensive exposure in developing web applications using the latest front-end technologies
-
Expertise in the following area:
-
HTML5, CSS3, JavaScript and JS frameworks, such as jQuery,
-
Responsive & Adaptive web design
-
CSS frameworks like SASS/LESS
-
Able to work both independently and in a team environment.
-
Adequate knowledge of Version Control Systems like Git
Mandatory Skills to have:
-
Drupal Must-Have:
-
Prior hands-on experience with Drupal Projects.
Responsibilities:
- Working with the product team and designers to collaboratively build the products that pushes Rely to reach our next stage of growth.
- Tackle the challenges that occur from having your code running on different merchant websites.
- Ensure the technical feasibility of UI/UX designs.
- Optimise applications for maximum speed and scalability.
- Collaborate with other team members and stakeholders.
- Move fast.
Requirements:
- 3+ years of hands-on product experience in professional software development with front end web development and experience in building user interfaces
- At least one year experience with Angular.
- Experience writing good JavaScript code from scratch.
- Familiarity with web development cycles (e. g. package management, module bundling, unit, and integration testing, browser capabilities, etc. ).
- An eye for detail and empathy for the customer.
- Experience building for mobile platforms.
- Ability to write clean, semantic HTML and CSS, agonising along the way for pixel perfection.
- Experience working at a fast-growth startup.
- Experience upgrading angular.
Type: Full time
Experience: 1-5 years
Developing user interface components and implementing them following well-known React.js workflows (such as
Flux or Redux).
Building reusable components and front-end libraries for future use.
Optimizing components for maximum performance across a vast array of web-capable devices and browsers
Integration of the front-end and back-end aspects of the web application
Requirements:
- Experience in developing modern web applications using React and Redux.
- Strong proficiency in CSS, JavaScript, including DOM manipulation and the JavaScript object model
- Good understanding of Database schema, design, optimization, scalability.
- Great communication skills, strong work ethic.
- Ownership of the product from start to finish.
- Ability to learn new technologies quickly.
- Experience with AWS
- Expert level understanding of the HTML DOM and underlying event model
- Prior Open source contributions
- Experience building responsive design.








