React.js Developer

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.

KEY RESPONSIBILITIES:

• Collaborate with Project Manager or Project Consultant to develop front end of mobile and web application
• Delivering a complete front-end application
• Ensuring high performance on mobile and desktop
• Writing tested, idiomatic, and documented JavaScript, HTML and CSS
• Coordinating the workflow between the graphic designer, the HTML coder, and yourself
• Cooperating with the back-end developer in the process of building the RESTful API
• Collaborate with the stakeholders, the users, the build team and other development partners to implement state-of-the-art user experiences.
• Collaborate with cross-functional teams to analyze, design, and ship new features
• Participate actively in discussions, presentations and decisions about front end development, web application, mobile app etc.
• Act as the impulse by providing clear guidance to the team’s questions during implementation phases
• Implement new technologies to maximize application performance
• Work with outside data sources and APIs
• Work on bug fixing and improving application performance

KEY COMPETENCIES & SKILLS:

• Strong object-oriented JavaScript
• Flat box, material design concepts
• AngularJS, MVC frameworks – Angular
• CSS precompilers like Sass and LESS
• Skills in one or more chosen frameworks/libraries like jQuery or Bootstrap
• AJAX (Asynchronous JavaScript and XML)
• HTML 5, CSS Modules, Web pack, Babel, npm
• jQuery, jQueryUI, RequireJS, doT.js (Templating Engine)
• Able to integrate existing API (REST)
• Understanding of java web application technology stack (core Java, spring core, Spring MVC, Hibernate, REST)
• Git/GitHub, Continuous integration using maven & Jenkins
• Integrate applications with network systems, servers and databases.
• Troubleshoot problems with application development and use
• Excellent conceptual, and critical thinking capabilities
• Self-directed and self-motivated with the ability to take charge or play a supporting role
• Strong understanding of product development
• Clear written and verbal communications skills (English), including presentation skill
• Basic knowledge of Microsoft Office (Word, Excel and PowerPoint) is required.

We are looking for a React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be 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 is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

Responsibilities
Build pixel-perfect, buttery smooth UIs across both mobile platforms.
Leverage native APIs for deep integrations with both platforms.
Diagnose and fix bugs and performance bottlenecks for performance that feels native.
Reach out to the open-source community to encourage and help implement mission-critical software fixes—React Native moves fast and often breaks things.
Maintain code and write automated tests to ensure the product is of the highest quality.
Transition existing React web apps to React Native.

Skills
Firm grasp of the JavaScript, TypeScript, ClojureScript language and its nuances, including ES6+ syntax Knowledge of functional or object-oriented programming
Ability to write well-documented, clean Javascript code
Rock-solid at working with third-party dependencies and debugging dependency conflicts
Familiarity with native build tools, like XCode, Gradle Android Studio, IntelliJ
Understanding of REST APIs, the document request model, and offline storage
Experience with automated testing suites, like Jest or Mocha

• Create high-quality HTML files based on the latest HTML5.
• Conducting website performance and usability tests.
• Troubleshoot any issues with the website.
• Meeting publication deadlines.

• In-depth knowledge of front-end coding languages including HTML, CSS, JavaScript, and JQuery.
• Familiarity with CSS preprocessors such as Sass and Less.
• Strong attention to detail.
• Experience with Photoshop, Illustrator, Figma, or other graphic design and layout tools.

We are looking for a senior React.js developer who can guide the current team and also work on our project. The requirement could be for 3-4 months or at max 6 months. Hence a full-time remote consultant is preferred with about 4-5 years of experience in React.

This position is for a ReactJS developer. Since we are a start-up this position will have a lot of exposure to other verticals such as product management as well. There is no limit to learning for a person who is willing to take responsibility.

• Develop web-based application for analytics using Angular
• Integrate and extend Python REST APIs and create visually stunning UI experiences for analysts and users.
• Create flexible dashboards and reports (using plotly, d3, etc) and  leverage open source technology to create various components.
• Create a flexible UI for data analytics and big data usecases which can be used by Large Tier banks as well as smallscale agile startups
• Write unit tests and functional tests for the component using tools like Jasmine, Karma, Cypress, etc.
• Follow software development practices with continuous testing, development and integration (CD/CI)
• Write and maintain technical design documents and new-feature documents
• Collaborate closely with developers, engineers, testers, and product managers
• Participate in peer-based code reviews and design reviews
• Follow agile methodology and encourage collaboration with tools such as GIT, Confluence and Slack applications
• Undergraduate degree or above in computer science preferred

Required Qualifications

• Knows SPA and frontend technologies well
• Has used atleast 1 web framework: Angular / React / Vue / etc. and comfortable with Javascript/Typescript.
• Experience with styling (CSS / SCSS / others) frameworks like bootstrap, material, foundation, tailwind, etc. is a plus
• Knowledge on visualization frameworks like D3, plotly, highcharts, chart.js, etc. to make customizable dashboards.
• Has used testing libraries like karma, jest, jasmine, cypress, selenium, etc.
• Familiar with with frontend processes like State management (Redux), Reactive programming (rxjs), Authentication methods (JWT, SAML) etc. 
• Basic knowledge about APIs (flask, django, nodejs) and worked on deploying web applications (nginx or apache or cloud technologies like AWS, GCP, docker, etc.) will be beneficial.