Senior/ Lead Frontend Developer - React.js Framework at Trendlyne Technologies · Bengaluru (Bangalore) · 3 - 8 years · ₹10L - ₹25L / yr (ESOP available) · Raised funding · Posted 17 Jun 2026

Senior/ Lead Frontend Developer - React.js Framework
Who are we :
Trendlyne, an Series-A funded, profitable products startup in the financial markets space with cutting edge analytics products aimed at businesses in stock markets and mutual funds.
Our founders are IIT + IIM graduates, with strong tech, analytics and marketing experience. We have top finance and management experts on the Board of Directors.
What do we do :
We build powerful analytics products in the stock market space that are best in class. Organic growth in B2B and B2C products have already made the company profitable. We deliver 800 million+ APIs every month to B2B customers.
Trendlyne analytics deals with 100s of millions rows of data to generate insights, scores and visualisations which are an industry benchmark.
Technical Skills Required :
- Hands-on development experience on ReactJS, React Native
- Excellent front-end development skills - Javascript ES6, HTML5, CSS3, Bootstrap/Flex
- Excellent understanding of web browsers, mobile browsers and responsiveness
- Experience in UI Build using Webpack/ Gulp
- Proficient understanding of code versioning tools, such as Git, Bitbucket, Github
- Proficient understanding of the performance of web and mobile applications
- Knowledge of Django web framework or Python will be an added advantage
Responsibilities :
- Develop new user-facing features, web and mobile applications
- Use HTML, CSS, JS, to deliver front-end of projects on time
- Work with UI & UX designers and project managers to ensure timely delivery of code
- Work with Backend developers and ensure smooth integration with CMS or APIs
- Build reusable code and libraries for future use
- Ensure the technical feasibility of UI/UX designs
- Optimize website for maximum speed and scalability
- As part of the core team, you will be working on cutting edge technologies like Spark, Flume, online backtesting and data visualization, and machine learning.
- All Developers will be involved with the entire lifecycle of the product right from product conceptualization, design, implementation and mobile app and web delivery.
- Salary on par with the industry, with company equity.

About Trendlyne Technologies
About
Who are we?
Trendlyne is a funded, profitable products startup in the financial markets space. We have cutting-edge analytics products built for Indian and US customers, for stock markets and mutual funds.
Our founders are IIT + IIM graduates, with strong tech and marketing experience. We have top finance and management experts on the Board of Directors.
What do we do?
We build best in class analytics in the US and Indian stock market space. Organic growth in B2B and B2C products have already made the company profitable. We deliver 1 billion+ APIs every month to B2B customers, and have a B2C website and app.
Visit us at trendlyne.com, or look for the Trendlyne mobile app on the Google Play Store:
https://play.google.com/store/apps/details?id=com.trendlyne.markets
We are a great place to work
We have a culture where you are building something awesome, and your work makes a difference. Full-time employees get paid leave, parental leave, medical insurance, and employee stock options.
We invest in your learning and check in with you to help you meet your career goals. We keep regular hours and don't work on weekends.
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Role Description
This is a full-time role for a React.js Developer who will be responsible for developing, maintaining, and optimizing responsive and scalable web applications. The successful candidate will work closely with UI/UX designers, backend developers, and product teams to convert designs and requirements into high-quality, production-ready applications. The role requires strong problem-solving skills, attention to detail, and the ability to take ownership of features from development through deployment.
Key Responsibilities
- Develop responsive and scalable web applications using React.js.
- Build reusable and maintainable frontend components.
- Convert UI/UX designs and Figma prototypes into functional web interfaces.
- Integrate frontend applications with REST APIs and backend services.
- Manage application state using Redux, Context API, Zustand, or similar technologies.
- Optimize applications for performance, responsiveness, and scalability.
- Debug and resolve frontend issues across development and production environments.
- Ensure cross-browser and cross-device compatibility.
- Collaborate with UI/UX designers, backend developers, QA, and product teams.
- Participate in code reviews and follow clean coding and development practices.
- Write and maintain appropriate tests for frontend applications.
- Stay updated with modern frontend technologies and best practices.
- Take ownership of features from development and testing through deployment and maintenance.
Requirements
- Strong proficiency in JavaScript (ES6+) and React.js.
- Good understanding of React Hooks, component architecture, props, state, and Context API.
- Strong knowledge of HTML5 and CSS3 and responsive web development.
- Experience integrating REST APIs and working with JSON.
- Experience with state management libraries such as Redux, Zustand, or similar.
- Experience with Git and GitHub/GitLab.
- Understanding of frontend performance optimization and browser debugging.
- 3+ years of hands-on experience in frontend development with React.js.
- Experience with TypeScript and Next.js is preferred.
- Familiarity with UI libraries such as Tailwind CSS, Material UI, or similar is a plus.
- Experience with frontend testing tools such as Jest, Vitest, or React Testing Library is a plus.
- Good problem-solving and analytical skills.
- Strong communication and collaboration skills.
- Ability to work independently, prioritize tasks, and meet deadlines.
- A proactive approach to learning and solving technical problems.
Candidates with strong practical experience, personal projects, GitHub contributions, or demonstrable frontend work may also be considered in place of extensive professional experience.
NEED TO HAVE :
1) Have some knowledge of front end like React.JS
2) HTML, CSS
3) Strong in JavaScript concepts
4) Good communication skills
5) Loves to code
GOOD TO HAVE :
1) Experience with type script will be a plus
2) Experience with Nest.JS framework will be a plus
3) Strong hold on ES6 principles.
4) Familiar with TDD ( Test Driven Development ) will be a plus.
5) Familiar with working in CI / CD will be a plus
6) Micro-Service architecture knowledge will be an added benefit.
You can contact me on this WhatsApp number: Nine three one six one two zero one three two
Job Description:
https://drive.google.com/file/d/12Fcie5u0rhyHeE_xhsNTeGk3mlPId1Mb/view?usp=drive_link
Frontend Developers
- Contract To Hire (Initial Engagement: 6 months)
Experience: 5+ years
Mandatory Skills:
● React.js
● React Native
● JavaScript
● Experience in developing scalable and maintainable web and mobile applications
● Frontend architecture and reusable components
● State management
● REST API/backend service integration
● Application performance optimisation
● Authentication/authorisation and frontend security
● Git and pull-request-based development
● Clean, reusable and testable code
● Agile/product development experience
● Code reviews, debugging and production issue resolution
Good to have:
● TypeScript
● Next.js
● Jest / React Testing Library
● CI/CD
● Application monitoring
● Mobile deployment
Role Summary
The Senior Front-end Developer builds and maintains client-facing interfaces per UI/UX designs and product requirements, owns front-end architecture and code-review standards, and mentors the Junior Front-end Developer. This is a specialized front-end role, not a full-stack position.
Key Responsibilities
• Own front-end architecture decisions, including framework, state management, and tooling choices.
• Set and enforce code-review, testing, and performance/accessibility standards for the pod.
• Lead implementation of complex, high-visibility features.
• Troubleshoot and resolve complex front-end performance or technical issues.
• Mentor the Junior Front-end Developer, including code review and skill development.
• Partner closely with UI/UX to ensure design fidelity and flag implementation constraints early.
• Evaluate and recommend front-end tooling or library upgrades.
Required Skills & Technical Competencies
• Deep expertise in a modern front-end framework (React strongly preferred) and associated ecosystem.
• Strong understanding of front-end performance optimization and accessibility standards.
• Experience owning front-end architecture for a production application.
Targeted Qualifications
• 5–8 years of front-end development experience.
• Deep expertise in a modern framework (React preferred) and front-end architecture patterns.
• Experience owning performance and accessibility standards.
• Bachelor's degree in Computer Science or related field.
Preferred / Nice-to-Have
• Experience with data-dense or real-time dashboard interfaces (relevant to IoT products).
• Experience mentoring junior developers formally.
- 5–8 years of experience in full-stack development.
- Strong hands-on experience with React.js and JavaScript/TypeScript.
- Develop reusable, responsive, and high-performance UI components.
- Experience with React Hooks, Redux, Context API, and frontend state management.
- Strong knowledge of Core Java, Java 8/11/17+, and object-oriented programming.
- Hands-on experience with Spring Boot, Spring MVC, and Spring Security.
- Design, develop, and integrate RESTful APIs and microservices.
- Work with databases such as PostgreSQL, MySQL, or Oracle.
- Write unit, integration, and frontend tests using tools such as JUnit, Jest, or React Testing Library.
- Collaborate with product managers, UI/UX designers, QA engineers, and development teams.
- Participate in design discussions, code reviews, sprint planning, and Agile ceremonies.
- Troubleshoot application issues and optimize system performance.
- Use Git, Maven/Gradle, and CI/CD pipelines for development and deployment.
- Exposure to Docker, Kubernetes, AWS, or other cloud platforms is an added advantage.
- Strong problem-solving, communication, and teamwork skills.
We are looking for a Full Stack Developer to produce scalable software solutions. You'll be part of a cross-functional team that's responsible for the full software development life cycle(Java with react), from conception to deployment.
- Responsible for developing software in Java, object-oriented databases, and the dotCMS platform.
- Responsible for building REST web services, and designing interfaces between UI and REST service.
- Deep knowledge and hands-on experience with Java and UI stack.
- Proficient experience with web technologies, frameworks, and tools like HTML, CSS, JavaScript, React, NodeJS, XML, jQuery, Spring, etc.
- Should be well versed with State Management, Redux, Reducers, JavaScript, and CSS in ReactJS/UI.
What we need:
• Experience in both Web + Mobile development
• Strong understanding of APIs & system design
• Ability to build end-to-end features
· Maintain version control and documentation using Git / GitHub.
Roles and Responsibilities
- Design and develop responsive web applications using React.js / Next.js.
- Build and maintain scalable RESTful APIs using Node.js and Express.js.
- Implement user authentication and authorization using JWT / OAuth2.
- Manage and optimize database structures using MongoDB or MySQL.
- Integrate front-end and back-end components seamlessly for smooth user experience.
- Collaborate with UI/UX designers and product teams to deliver high-quality features.
- Participate in Agile / Scrum sprints, daily stand-ups, and code reviews.
- Optimize applications for speed, performance, and security.
- Maintain version control and documentation using Git / GitHub.
Troubleshoot and debug production issues efficiently.
Job Location- Bangalore,
Candidates from Tamil Nadu willing to relocate to Bangalore can also apply.
About the Role
We are seeking motivated and enthusiastic Frontend Developer Interns to join our team remotely for a 3-month internship. This role offers an excellent opportunity to gain hands-on experience in web development, work on live projects, and strengthen your portfolio. While this is an unpaid internship, interns who successfully complete the program will receive a Completion Certificate and a Letter of Recommendation.
Responsibilities
- Build and maintain user-facing features with HTML, CSS, and JavaScript/TypeScript.
- Assist in developing web applications using frameworks like React, Vue, or Angular.
- Translate UI/UX wireframes into responsive and interactive web pages.
- Ensure performance, accessibility, and cross-browser compatibility.
- Debug and troubleshoot frontend issues.
- Collaborate with mentors, designers, and backend developers.
- Document code and contribute to team discussions.
Requirements
- Knowledge of HTML5, CSS3, and JavaScript (ES6+).
- Familiarity with at least one frontend framework (React preferred).
- Understanding of responsive and mobile-first design.
- Basic experience with Git/GitHub.
- Good problem-solving, communication, and teamwork skills.
- Self-motivated and able to work independently in a remote environment.
What You’ll Gain
- Real-world project experience to add to your portfolio.
- Mentorship and guidance from experienced developers.
- Completion Certificate after the internship.
- Letter of Recommendation based on performance.
- Potential for consideration in future paid opportunities.
Internship Details
- Duration: 3 months
- Type: Remote (Work from Home)
- Stipend: Unpaid
- Perks: Certificate of Completion + Letter of Recommendation
* Design, develop, and maintain responsive websites and web applications.
* Build reusable frontend components using React.js.
* Develop scalable backend APIs and services using Node.js.
* Integrate third-party services and payment gateways such as Stripe.
* Build RESTful APIs and integrate with modern databases.
* Optimize applications for maximum speed, scalability, and SEO.
* Collaborate with designers to translate Figma/UI designs into pixel-perfect interfaces.
* Implement authentication, authorization, and security best practices.
* Debug production issues and improve application performance.
* Participate in code reviews and mentor junior developers.
* Work within Agile/Scrum development processes.






