UI Designer

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.

• Experience with popular React.js workflows (such as Flux or Redux)

• Experience with data structure libraries (e.g., Immutable.js)

• Experience with standard front-end development tools such as Babel, Webpack, NPM, etc.

• Thorough understanding of React.js and its core principles

• Familiarity with RESTful APIs and backend services

• Familiarity with code versioning tools such as Git, SVN, and Mercurial

• Familiarity with modern front-end build pipelines and tools

• Knowledge of isomorphic React is a plus

• Knowledge of modern authorization mechanisms, such as JSON Web Token

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model

Front-end Developer with a passion for sustainability

• Git
• Angular
• Bootstrap, Material-UI, TailwindCSS or any other widely-adapted CSS library/framework
• Sass or other css preprocessors
• NgRx or other state management libraries
• StorybookJS
• Jest or other Javascript unit testing libraries

• Solid understanding and experience
• Cross-browser compatibility
• Front End optimisation
• Frontend architecture
• REST APIs and integrations
• Object Oriented Programming concepts
• Design Patterns
• TDD (Test Driven Development)
• Agile

• Any cloud provider services (AWS/Azure/Google Cloud etc.,)
• Docker or any other virtualization technology
• NodeJS (ExpressJS, LoopbackJS, HapiJS etc.,)
• Interface design tools like XD, Figma
• Developing REST APIs

Work Responsibilities

• What You’ll Do:
• Engineers will develop and improve features for products such as WebView pages called from within Mercari’s web version and native app, along with tools used by the Customer Support Team for answering user inquiries and providing transaction support.
• Senior engineers in the Frontend Team are expected to use their technical skills to lead the team and product development, train members through design and code reviews, and make contributions and improvements to the hiring process, including technical tests.
• Development Environment:
• Languages: HTML, CSS, JavaScript, TypeScript, React, Gatsby, Next.js, GraphQL, Apollo Client, Redux, Cypress, Rendertron, Lit, Playwright
• Infrastructures: Google Cloud Platform (Compute Engine, Kubernetes Engine, App Engine)
• Configuration management tool: Terraform
• Other: Circle CI, GitHub, Slack, JIRA, Crowi, Spinnaker, Datadog

Minimum Requirements

• Shared understanding and belief in Mercari Group's mission and values
• At least 3 years of experience in development related to frontend fields such as web browsers, JavaScript, TypeScript, React.js, Next.js, or Redux
• Experience with developing and operating large-scale products
• Ability to design and develop with performance and scalability in mind
• Ability to use HTML and CSS to implement solid user interfaces
• Knowledge of JavaScript and experience developing with UI libraries or frameworks such as React, Vue.js, and Angular
• Able to understand and explain web operation principles and browsers
• Understanding of version management and ability to participate in development via Git
• Effective communication skills, needed for product development with team members and with other teams

Preferred Requirements

• Extensive knowledge of standard web technologies and specialized knowledge in some areas, like TypeScript, React.js, Next.js, Redux
• Understanding of the characteristics of different libraries/frameworks and the ability to introduce them to projects where necessary
• Ability to design architecture based on the characteristics of the app
• Ability to consistently take initiative in implementing improvements to the app
• Project management and/or team leadership
• Cloud development experience (preferably GCP or AWS)
• Experience contributing to an open-source project
• Familiarity with CI systems and the release process

Working Conditions

Employment Status

Full-time

Office

Bangalore

• Hybrid Workstyle

Role : React JS Developer 

• 3-5 years of experience as a React JS developer. 
• Must have Working Experience in a product based organization at least 18 months.
• Good Communication skills must. 
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model 
• Thorough understanding of React.js and its core principles 
• Experience with popular React.js workflows (such as Flux or Redux) ● Familiarity with newer specifications of ECMAScript
• Experience with HTML,CSS, Bootstrap and UI Design 
• Knowledge of RESTful APIs 
• Knowledge of modern authorization 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. 
• Ability to understand business requirements and translate them into technical requirements 
• Familiarity with code versioning tools {such as Git} 

Position: React JS Developer
Exp: 6-8years

Skills: React, Javascript, Typescript, HTML/CSS, GIT, Frontend Testing, Tools like Cypress.

Primary purpose of the role:

Front end development of websites and applications using CSS3, HTML5, jQuery and other skills to produce clean, functional and web compliant projects to be handed over to Back End Developers to be further worked on as well as CSS bug fixes post Back End development

Major responsibilities & deliverables:

​

1. Great skills in HTML, CSS, JavaScript and cross browser implementations.
2. Strong analytical and problem-solving skills.
3. Experience and knowledge about the cool stuff in HTML5 and CSS3.
4. At Least knowledge of one JavaScript framework such as VueJs, ReactJs, AngularJs
5. Proficiency and familiarity with CSS/JavaScript frameworks and utilities such as HTML5 Boilerplate, jQuery, Modernizr, Firebug, JSLint, minification, and others. 
6. Taking PSD files from designers, slicing and/or recreating elements via CSS to match the design perfectly
7. Ability to make modifications to libraries in jQuery as per requirement of a project
8. Extensive knowledge of fonts, embedding from third parties like Google, Typekit & Font Deck etc.
9. Knowledge of optimizing CSS/JavaScript performance, by coding practices and tools.
10. Passion and follow through for their work. Excited and curious about learning new technology, as well as the sharing of ideas. Exceptional collaboration, listening, written, and verbal communication. Able to own individual projects as well as the ability to work within a team.
11. Awareness of current design trends in the visual arts, working knowledge of the latest computer packages and an understanding time limits which can impact on the design.
12. Knowledge of GIT or any other version control software.

​

AutoScheduler is looking for a remote Front-End Full-Stack Developer to join our talented team. The ideal candidate is a self-starter who is interested in constant learning. We want this person to join our dynamic team as we take an established software and re-develop it from scratch as a part of a new start up.

We are looking for a Front-End developer responsible for rebuilding the back-end and front-end components of the AutoScheduler user interface. Your primary responsibilities will be to design and develop these applications and services, and to coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, robust design, and quality product is essential.