
Job title: React.js Developer
Location: Gurugram (Onsite)
Notice: Immediate joiner
Responsibilities:
• Meeting with the development team to discuss user interface ideas and applications.
• Reviewing application requirements and interface designs.Identifying web-based user interactions.
• Developing and implementing highly responsive user interface components using react concepts.
• Writing application interface codes using JavaScript following react.js workflows.
• Troubleshooting interface software and debugging application codes.
• Developing and implementing front-end architecture to support user interface concepts.
• Monitoring and improving front-end performance.
• Documenting application changes and developing updates.
Requirements:
• Bachelor’s degree in computer science, information technology, or a similar field.
• Previous experience working as a react.js developer.
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
• Experience with user interface design.
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.
• Good project management skills.
- Basic knowledge of Data Structure and Algorithm required

About Sunday Labs
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Senior React Developer – Trading & Fintech (Broker-Focused Solutions)
About Us:
At Tradelab Technologies Pvt Ltd, we don’t just build web applications, we create high-performance trading platforms tailored for brokers and financial institutions. Our platforms power real-time market analysis, ultra-low-latency trade execution, and seamless broker-client interactions.
What We Expect:
- 2+ years of front-end development experience, with 2+ years specializing in React.js.
- Deep expertise in React, Next.js, TypeScript, and state management libraries (Redux, Recoil, Zustand, etc.).
- Proven experience in building and optimizing ultra-responsive, high-performance trading platforms for brokers.
- Strong understanding of financial data visualization, real-time charting, order book mechanics, and trade execution workflows.
- Hands-on experience with real-time data streaming, WebSockets, FIX protocol, and API integrations for brokerage services.
- In-depth knowledge of performance optimization, server-side rendering, and rendering strategies for trading dashboards.
- Security-conscious mindset—you know how to build secure, compliant fintech applications that handle sensitive brokerage and trading data.
- A problem-solving mentality that thrives under pressure—brokers depend on our platforms for seamless trade execution, and we deliver nothing less than perfection.
What You Will Do:
- Lead the front-end development of trading applications designed specifically for brokers and financial institutions.
- Architect and optimize blazing-fast, low-latency web applications that ensure brokers can execute trades with unmatched speed and accuracy.
- Design and implement high-performance data visualization components—live stock charts, trade analytics, real-time market depth, and complex order books.
- Work closely with brokers, backend engineers, and UX designers to craft seamless, intuitive, and highly secure trading solutions.
- Solve hard problems at scale—whether it’s optimizing execution speeds, handling high-frequency WebSocket updates, or ensuring zero downtime during peak trading hours.
- Innovate and experiment with cutting-edge front-end technologies to push the boundaries of brokerage solutions.
- Own your work end-to-end—from concept to deployment, ensuring traders and brokers get a flawless user experience.
Must-Have Skills:
- Proven expertise in Front-end development with React.Js
- Deep expertise in React, Next.js, TypeScript, and state management libraries (Redux, Recoil, Zustand, etc.).
- Proven experience in building and optimizing ultra-responsive, high-performance trading platforms for brokers.
- Strong understanding of financial data visualization, real-time charting, order book mechanics, and trade execution workflows.
- Hands-on experience with real-time data streaming, WebSockets, FIX protocol, and API integrations for brokerage services.
Nice-to-Have Skills:
- Experience working on brokerage trading platforms, order management systems (OMS), or risk management tools.
- Contributions to open-source React trading libraries or a portfolio of real-time financial applications.
- Knowledge of regulatory compliance, order execution policies, and broker risk management tools.
- A track record of leading front-end teams, mentoring developers, and driving architectural decisions.
Why Join Us?
- Work with elite engineers and brokerage professionals in the fast-moving world of trading technology.
- Build platforms that brokers, traders, and financial institutions depend on daily.
- A culture that values bold innovation, real-time execution, and pushing the limits of brokerage tech.
- Expect challenges, high expectations, and a relentless pursuit of performance and precision.
- Competitive compensation, performance-driven growth, and a real opportunity to lead and shape the future of trading web applications for brokers.
If you’re obsessed with performance, thrive under market pressure, and are driven by results, we want you on our team. This is your chance to solve some of the toughest front-end challenges in brokerage and fintech. Step up. Apply now.
VMultiply Solutions
To create, improve, and maintain our custom developed Wordpress applications and Wordpress websites.
Making highly customized websites with own developed themes and plugins.
To understand design guidelines and develop accordingly with pixel perfect accuracy, by integrating HTML/CSS responsive designs as a Wordpress theme.
To improve performance of the website loading time.
Should have experience in Ecommerce
Should have experience in developing media site"
Responsibilities:
Experience in State management (Redux, ngrx/ngxs etc) is an advantage
Experience in Testing frameworks is an advantage
Experience building real time applications is an advantage
Experience using memoization is an advantage
Design and implement Angular applications for end users
Build reusable code and libraries for future use
Ensure the best efficiency and responsiveness of website
Identify and fix bugs in the website
Help to maintain the code quality
Work along with the backend team for seamless integration with APIs
Seeking a senior, dynamic, highly motivated full stack developer interested in working for a very early stage bootstrap startup. We have a Beta/MVP live, but need to get bug free and fast ASAP. The position has pay commensurate with local salaries in low-cost countries but will earn equity equivalent to their salary which could be worth up to more than that when the company is successful. I can show you our assumptions and estimates once you sign an NDA).
About Us
We are a company dedicated to helping people find the food they love, no matter what food interests or dietary preferences they may have. You’ll be joining in the very early stages of the company, and have the chance to influence the direction of the company with your ideas and contributions.
Our Tech Stack (Front End):
- JQuery
- Bootstrap
- EJS templates
- HTML/CSS All new modules
- js with a team-maintained and crowd-sourced component library Middleware/Back end.
- Express
- js
- MongoDB
- MySQL
- API layer
- Elastic Search
Desired attributes:
- Enjoys iterative/agile development – We will iterate based on internal and customer feedback until we make an awesome product! We also have a very deep and compelling product roadmap we make consistent progress against.
- Works well collaboratively with other developers, contributing to the codebase, performing code reviews, and mentoring a team of junior developers. We have a lot of junior developers learning to code that need mentorship/leadership.
- A passion for food would be great, our business is to help pair people up with amazingly good food.
- Results-oriented
Responsibilities:
- Ability to build on and maintain a fully functional responsive web application
- Experience building API-driven applications
Qualifications:
- CS Degree is great but development skills are more important than degrees
- Ability to build and maintain a fully responsive website
- Prefer proficiency in our tech stack, but willing to teach people who are highly motivated and can spend significant time on the project for equity.
- GitHub or similar source code management system experience
- Nice to have: Experience developing customer-facing web applications
- Working with the UI/UX designer and bridge the gap between graphical design and technical implementation, taking an active role on both sides and defining how the application looks as well as how it works.
- Being able to develop new user facing features.
- Ensuring the technical feasibility of UI/UX designs.
- Optimizing application for maximum speed and scalability.
- Assuring that all user input is validated before submitting to the back end.
- Collaborating with other team members and stakeholders.
What you need to have:
- Proficient understanding of web mark-up, including HTML5, CSS3
- Basic understanding of CSS pre-processing platforms, such as LESS and SASS
- Rock-solid understanding of JavaScript. Should have experience in React, Redux, or any other state management library.
- Huge plus if you are worked on complex UIs which involved drag & drop interactions.
- Good understanding of asynchronous request handling, partial page updates and AJAX.
- Hands-on experience in optimizing the UI of an application.
- Proficient understanding of cross-browser compatibility issues and ways to work around them.
- Proficient understanding of code versioning tools, such as Git.
- Knowledge about Docker, Nginx, Angular and RxJs are nice to have and adds as a bonus.
Summary
We are looking for talented front-end developers who can help us in enabling our customers deliver excellent experiences to end users. As a customer experience management firm , we are constantly enhancing user experiences in several of our customers' online platforms. The role of a front-end developer in our teams is crucial in realising our design solutions without any loss in translation. We are looking for developers who can contribute in building the best in class digital experiences through the right use of frameworks , technologies and code.
Responsibilities
Design and Develop web / mobile applications using front-end technologies like Angular7+, CSS , JS , HTML and many more.
Implement applications that have high standards of quality and the best of the performance.
Translate UX / UI designs from our design teams into high quality code without any loss in translation Design and implement optimised components, modules and applications using best practises of front- end development and clean coding standards
Work closely with backend development teams on API design and integration.
Deliver code with maximum coverage using unit-testing frameworks and testing practises such as TDD .
Optimise code continuously to improve quality , maintainability and performance.
Qualification and Experience
2 - 5 years of experience in front-end development of web / mobile applications . Experience in backend technology stacks will be an advantage
Key Skills
Strong proficiency in Angular7+, JavaScript .
Strong skills in HTML , CSS , SCSS and any CSS Frameworks .
Thorough understanding of any front-end frameworks like React , Angular or any other along with its core principles
Experience with data structure libraries , state managements, functional / reactive programming . Familiarity with newer specifications of ES6.
Experience with RESTful APIs integration
Knowledge of modern authorisation mechanisms, such as JSON Web Token
Familiarity with modern front-end build pipelines and tools
Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
A knack for benchmarking and optimisation








