Frontend Developer

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.

React JS Developer

📍 Location: Bangalore

💼 Experience: 4+ Years

📅 Notice Period: Immediate to 30 Days

Job Summary:

Experienced React JS Developer with 4+ years of hands-on experience in building scalable, high-performance web applications. The ideal candidate should have strong expertise in modern JavaScript, React ecosystem, and front-end best practices.

Key Responsibilities:

• Develop and maintain responsive web applications using React.js
• Build reusable components and front-end libraries
• Optimize components for maximum performance across devices and browsers
• Work closely with backend developers and UI/UX designers
• Integrate REST APIs and third-party services
• Write clean, maintainable, and scalable code
• Participate in code reviews and Agile ceremonies

Required Skills:

• 4+ years of experience in front-end development
• Strong proficiency in JavaScript (ES6+)
• Hands-on experience with React.js, Redux / Context API
• Experience with HTML5, CSS3, Bootstrap / Tailwind
• Knowledge of RESTful APIs integration
• Familiarity with Git and version control systems
• Understanding of Agile/Scrum methodology

About Gyaan:

Gyaan empowers Go-To-Market teams to ascend to new heights in their sales performance, unlocking boundless opportunities for growth. We're passionate about helping sales teams excel beyond expectations. Our pride lies in assembling an unparalleled team and crafting a crucial solution that becomes an indispensable tool for our users. With Gyaan, sales excellence becomes an attainable reality.

About the Job:

Gyaan is looking for a Senior React JS developer to join our dynamic team! As a Senior React JS developer, you will be responsible for building components and modules using React and associated tooling (Redux, React-query, Indexed-DB, Material-UI). Team management and Mentoring experience is required.

Responsibilities:

• Build components and modules using React.
• Building the core front-end infrastructure, design systems, and libraries.
• Convert Figma designs into reusable front-end components.
• Translation of designs and wireframes into high-quality code.
• Collaborate closely with designers, engineers, founders, and product managers.
• Take ownership of products and features & releases, Should be able to mentor junior developers, Code reviews, Feature Review & Allocation of tasks.

Must-Have Skills:

• 4-6 years of production experience with React JS and associated tooling (Redux, React-query, Indexed-db, Material-UI)
• 3+ years of Typescript experience, including asynchronous programming, closures, types, and ES6/ES7.
• Thorough understanding of React.js and its core principles, including virtual DOM, data binding, State & Props and React Lifecycle and Redux.
• Experience with front-end technologies such as HTML5, JSS, CSS etc.
• Experience consuming and transforming internal and 3rd party API's using REST
• Experience with code quality and reusability practices (eslint, prettier, CI/CD for front-end repos)
• Knowledge of cross-browser compatibilities, responsiveness, and web accessibility standards.
• Good experience of Front-end/React best practices, code reviews, design documentation, debugging, troubleshooting, and agile development
• Communication: You like discussing a plan upfront, welcome collaboration, and are an excellent verbal and written communicator.
• Good to have If you have implemented complex features like authentication/authorization, I18N, logging, security, and testing into developer boilerplates to minimize production errors.

Qualifications:

• Bachelor’s degree in Computer Science or equivalent experience.

If you are passionate about solving problems and have the required qualifications, we want to hear from you! You must be an excellent verbal and written communicator, enjoy collaborating with others, and welcome discussing a plan upfront. We offer a competitive salary, flexible work hours, and a dynamic work environment.

Apply now and join our team of skilled professionals!

If this role interests you, kindly apply on below link & also review JD & company details:

https://gyaan.keka.com/careers/jobdetails/17678

What you need to have:

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

Hands-on experience in React.js  and Good understanding of core concepts

Hands-on experience in state management libraries like Redux.

Hands-on experience in HTML5 & CSS3 and JavaScript.

Experience integrating with Restful web services

Proficient with ES6/7/8 syntax and concepts

Proficient knowledge of cross-browser compatibility issues

Knowledge of modern authorization mechanisms, such as JSON Web Token

Experience with common front-end development tools such as Babel, Web pack, NPM.

As a front end product engineer, you will work with product engineers & designers to improve the overall user experience, performance, reliability and scalability of our systems. From handling millions of messages/ payments a minute to extract buyer intent and priority for processing these transactions to building tools to trace and visualize payments made across a business you'll be involved in projects that span all aspects of the business. Our goals includes scaling and architecting systems to support advanced product features that may not be currently viable because of hard technical considerations. You'll collaborate with our small, but effective, framework team with a track record of highly impactful work for Finly.

WITHIN 1 MONTH, YOU'LL

• Complete Finly's new-hire training week, and learn Accounts Payable Processes & the various partners we work with to make Finly happen.
• Investigate, solve and release a bug fix to production. In order to do this you will ramp up on Finly's engineering stack by pair-programming with your teammates and attending engineering training sessions designed and presented by the team.
• Meet with cross-functional peers around the company to learn how the product functions.
• Complete your engineering starter project and deploy your first changes to production.

WITHIN 3 MONTHs, YOU'LL

• Learn Finly's technical stack and apply development patterns through your work.
• Engage in your first on-call rotation in Support Engineering to help diagnose and resolve production problems and customer issues
• Individually contribute reliably ship full features to customers.
• Estimate technical scope and time to complete major features and initiatives.

WITHIN 6 MONTHS, YOU'LL

• Move to new product vertical & initiative and start designing scalable frontend systems.
• Have made a visible impact on the product for all the users of Finly.
• Work closely with your team to remove roadblocks, educate on best practices and improve how we work.
• Be comfortable navigating most of frontend stack and infrastructure
• Be responsible for the planning, scoping, design, and implementation of new features
• Participate in interviewing and hiring, as a way to influence team growth and how our values inform our culture

WITHIN 12 MONTHS, YOU'LL

• Individually contribute and lead teams to reliably ship full improvements to our frontend services
• Define tools and standards for product engineering to measure performance impact of releases
• Drive service reliability by developing tooling that enables metric visibility using SLIs, SLOs, and SLAs
• Developing Production Readiness standards to ensure service reliability
• Help grow other engineers technically by mentoring, pairing and developing other learning opportunities
• Collaborate with engineering and product leadership to define priorities and set delivery goals

Your understanding of front-end technologies, web application dev, system design, will be put to the test. You will take up a project for a team and then move to another project.

Join us & have the authority and responsibility to make things happen!