senior lead frontend

Job Description:

Job Title: Frontend Developer

Location: Kolkata

Experience: 1-2 years

Job Description:

We are looking for a talented Frontend Developer who is passionate about building high-performance, user-friendly, and scalable web applications. You will play a key role in architecting and implementing clean UI/UX experiences using modern frontend technologies.

If you enjoy solving complex problems, writing clean code, and working in a fast-paced product environment, this role is for you.

Key Responsibilities:

• Develop responsive, modular, and scalable UI components using React.js and Next.js (App Router).
• Implement reusable form logic using React Hook Form with schema validation using Zod.
• Manage data fetching, caching, and synchronization using React Query.
• Work with Redux Toolkit or Zustand for state management depending on project needs.
• Build dynamic and efficient tables and data grids using TanStack Table.
• Collaborate with designers and translate Figma designs into pixel-perfect, responsive UI using Tailwind CSS, Shadcn, and custom CSS.
• Ensure high-quality code with TypeScript, following best practices and strong typing.
• Optimize performance and maintain application scalability.
• Participate in code reviews, contribute to architecture decisions, and follow coding standards.
• Work closely with backend engineers to integrate APIs and improve the overall product experience.
• 
  

Required Skills & Experience:

• Strong proficiency in Next.js (App Router), React.js, JavaScript, and TypeScript.
• Hands-on experience with Zod for schema validation.
• Practical knowledge of React Query for server state management.
• Strong understanding of Redux Toolkit and Zustand.
• Expertise in React Hook Form for handling forms at scale.
• Experience with TanStack Table for complex table functionalities.
• Solid understanding of Tailwind CSS, CSS, and component libraries like Shadcn.
• Ability to convert designs from Figma into functional UI.
• Good understanding of modern frontend architecture, state management, and best practices.

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.

Responsibilities

• Work in a fun and fast-paced environment.
• Participate in requirements gathering, design, development, QA, support.
• Communicate with different stakeholders such as QA, Project Managers and Product Owners
• Discover, evaluate, and implement new technologies to maximize development efficiency.
• Groom, mentor and upskill team members with modern technologies and development practices

Key Competencies:

• 5-8 Years of relevant experience in front-end development.
• At least 5-4 years of working experience with the React ecosystem.
• In-depth knowledge of TypeScript, CSS, and HTML.
• Strong proficiency in Vanilla JavaScript, DOM, Browser API’s and ES6 Features.
• Strong Knowledge of State Management with React and relevant workflows.
• Good Understanding of Modern frontend workflows with NPM, Webpack, Babel etc.
• Knowledge of modern programming paradigms like functional and reactive programming.
• Knowledge of testing frameworks including Chai, Mocha and Sinon or equivalent.
• Experience with using browser-based dev tools for trouble shooting and enhancing the performance.

Good to have skills:

• Knowledge of cloud-based services like AWS and GCP.
• Working knowledge of Video streaming and playback
• Knowledge of modern programming paradigms like functional and reactive programming.

We are looking for a React Developer to join our awesome team and deliver a streamlined user experience. We want a team member who strives to develop a first-class codebase using React best practices. As a React Developer, you will implement a complete user interface in the form of a mobile/desktop web app & handle its integration with the back-end. 

• Develop user interfaces for modern rich internet applications with the latest Front End Technologies
• Perform product analysis and development tasks of increasingly complex nature which may require extensive research and analysis.
• Writing tested and documented JavaScript, HTML and CSS
• Make design and technical decisions for React projects
• Develop application code and unit tests in the React. 
• Ensuring high performance

• BSc/BE/BTech in Computer Science, Engineering or a related field
• 1+ years Experience with React. Good to have working knowledge of React Native, Angular, VueJS
• Strong expertise with HTML, CSS, and writing cross-browser compatible code.
• Good understanding of AJAX and JavaScript DOM manipulation Techniques
• Experience with RESTful services
• Experience in JavaScript build tools like grunt or gulp
• Hands on and implements complex React modules
• Able to implement automated testing platforms and unit tests
• Understanding of fundamental design principles behind a scalable application
• Proficient understanding of code versioning tools (Git) 
• Critical thinker and problem-solving skills
• Team player
• Good time-management skills
• Great interpersonal and communication skills

Position Summary


Clarista.io turns current enterprise data silos into a ‘Live Data Network’, easy to use, always available, with flexibility to create any analytics. Clarista is designed for both business and technical users, hence the user interface plays a pivotal role in ensuring performance with large datasets and a superior user experience.

What You'll Do


You will be part of Clarista’s UI engineering team. You will work in our cloud native environment and perform following activities to support core product development and client specific projects:

• You will build & support responsive web user interfaces by using ReactJS
• You will ensure usability of the interfaces and workflows for end users
• You will integrate user interfaces with data and other interfaces through APIs
• You will collaborate with cloud and data engineering teams to enable end-to-end functionality
• You will partner with other team members in understanding the functional / non-functional business requirements, and translate them into software development tasks
• You will follow the software development best practices in ensuring that the code architecture and quality of code written by you is of high standard, as expected from an enterprise software
• You will be a proactive contributor to team and project discussions

 Who you are


• Strong education track record 
• Bachelors or an advanced degree in Computer Science or a related engineering discipline from Indian Institute of Technology or equivalent premium institute.
• 2-3 years of experience in UI Development using ReactJS
• An ideal candidate will be responsible to produce high-quality solutions; bringing a deep understanding of modern HTML, JavaScript, and CSS, and the software development life cycle and a strong ability to execute and implement standard software architecture patterns.
• Expert knowledge of JavaScript to design optimized and modular components that will be used across platforms.
• Proficient with ReactJS, Redux, Service Workers, Optimized coding practices, Progressive Web Apps (PWA), Context API, System design, Web concepts, Server-Side Rendering (SSR), lazy loading.
• Should have experience working with any of the chart’s library like charts.js, Highcharts.js, etc.
• Should know how to write modular and optimized code.
• Should have good knowledge around error handling.
• Fair understanding of responsive design and cross-browser compatibility issues.
• Experience versioning control systems such as GIT
• Strong problem solving and communication skills.
• Self-starter, continuous learner.

Good to have some exposure to

• Start-up experience is highly preferred
• Exposure to micro front ends.
• Agile software development methodologies.
• Working in multi-functional, multi-location teams

What You'll Love About Us – Do ask us about these!

• Be an integral part of the founding team. You will work directly with the founder
• Work Life Balance. You can't do a good job if your job is all you do!
• Prepare for the Future. Academy – we are all learners; we are all teachers!
• Diversity & Inclusion. HeForShe!
• Internal Mobility. Grow with us!
• Business knowledge of multiple sectors

UI Developer

Notice Period: 45 days 

Banyan Data Services (BDS) is a US-based Infrastructure services Company, headquartered in San Jose, California, USA. It provides full-stack managed services to support business applications and data infrastructure.  We do provide the data solutions and services on bare metal, On-prem, and all Cloud platforms. 

We are looking for UI Developer whose primary task will be to design and implement user interfaces for maximum usability and performance in web applications.

If you have a creative mind, top-notch technical skills, a strong sense of user interface design, and are passionate to be a part of a rapidly growing rocket ship startup, run by a world-class executive team then you are on right track.

Key Roles & Responsibilities

· Work in a team to design and build software applications to function across multiple platforms and technologies.

· Use coding to develop the aesthetics implemented within a website or product, from the layout menus and drop-down options to colors and fonts

· Combine interface design concepts with digital design and establish milestones to encourage cooperation and teamwork

· Develop overall concepts for improving the user experience within a business webpage or product, ensuring all interactions are intuitive and convenient for customers

· Write code in addition to testing and debugging code on a variety of platforms to comply with company standards

· Perform the technical analysis on both new and existing applications and their performance in several system formats

· Collaborate with back-end web developers and programmers to improve usability

· Seek to enhance the user experience by creating seamless navigation through various digital programs and interfaces within the company

· Create surveys for research through various social media platforms to gather feedback on user's ease of use and incorporate the findings in the development

Key Skills & Qualification

· 3+ years of demonstrated experience in creating and implementing UI development

· 2+ years of professional experience in Native React

· Highly proficient in rendering components with Native APIs

· Hands-On experience in JavaScript, modern JavaScript, HTML, Materialized CSS, Bootstrap, React.js

· Highly proficient in one or more libraries I.e Redux, Redux with hooks, Redux with Thunk, React Router, for state managing and routing in addition to React.

· Proficient in using Git as a control system

· Good understanding of MVC frameworks

· Should have knowledge of Architectural design pattern

· Understanding and grasp of Agile development and Scrum practices

· Flexibility and deadline-driven

· Professional written and interpersonal skills

· Ability to prioritize and manage multiple milestones and projects efficiently

· Advanced problem-solving skills and the ability to optimize code for the best possible outcome

http://www.banyandata.com" target="_blank">www.banyandata.com 

Primary Skill: Java Script

Secondary: HTML5,JS Library- React.js,React JS,User Experience Design

HTML, CSS, CSS3, JavaScript, Object Oriented JS, Angular JS, Ecma Script (ES6),React JS/Angular/TypeScript

Basic understanding of HTTP protocol, Web Application Design/Architecture

OOPS concept, JSON, AJAX

Knowledge of REST API

Basic understanding of Git

Basic understanding of client-server communication

Ready to take up challenges at work

Learning ability

Team spirit

Basic understanding of single page web application

Analytical Skills

Communication

Adaptability

Logical and Problem Solving

• If you are interested in creating a user-friendly environment by writing code and moving forward in your career, then this job is for you.
• Collaborate with back-end developers and web designers to improvenusability.
• Writing tested and idiomatic JavaScript, HTML and CSS.
• Present key milestone deliverables to peers and execute level stakeholders.
• Build reusable code and libraries for future use.
• Tech-savvy professional, who is curious about new digital technologies and aspires to combine usability with visual design.

1. Bachelor's Degree in Computer Science
2. 1-5 years of professional software development experience
3. Experience with ES2015+, React, Webpack/Rollup, CSS, Node.js, Object oriented JS, FP in JS, TDD/BDD, Git, CSS
4. Ability to write clean, effective code
5. Strong problem solving and troubleshooting skills
6. Ability to work independently in a fast-paced environment with frequent production releases
7. Understanding of performance and efficiency with a strong customer focus
8. Work cross functionally to collaborate with designers o iterate on the design and implementation of our product
9. Be empathetic towards customers and appreciate the user's experience

• MS or BS in Computer Science or equivalent
• 9+ years (or more) experience shipping quality code
• 4+ years’ experience with leading frontend frameworks like Angular 1 to 8 or ReactJS, etc.
• Experience on Ionic Framework, Cardova
• Experience contributing front-end code to a publicly available, consumer-focused web application.
• Solid experience and understanding of HTML5, CSS3, and Javascript (vanilla JS and popular libraries like Underscore.js and jQuery)
• Experience with REST-based API