React.js Developer | Chennai

Frontend Engineer (Next.js / React / TypeScript)

Position Summary

We are seeking a Frontend Engineer with deep expertise in Next.js, React, and TypeScript to join our growing engineering team. The ideal candidate will have experience building scalable, modern web applications, with strong knowledge of Tailwind CSS for styling and proficiency in integrating with MongoDB backends and AI/LLM APIs (e.g., OpenAI). You will work closely with backend engineers and AI specialists to build seamless user interfaces that power cutting-edge AI-driven applications.

Key Responsibilities

• Develop, optimize, and maintain frontend features using Next.js, React, and TypeScript.
• Implement responsive and scalable UI components with Tailwind CSS.
• Integrate with backend APIs built on MongoDB and other data sources.
• Work with AI/LLM APIs (OpenAI, LangChain, etc.) to deliver intelligent, context-aware features.
• Collaborate with backend and AI engineers to ensure efficient data flow and optimal performance.
• Write clean, reusable, and testable code with strong attention to detail.
• Participate in code reviews, sprint planning, and product design discussions.

Required Skills/Qualifications

• Strong proficiency with Next.js, React, and TypeScript.
• Experience with Tailwind CSS and modern component-based UI development.
• Familiarity with integrating MongoDB backends into frontend applications.
• Experience consuming AI APIs (OpenAI, HuggingFace, etc.).
• Understanding of REST and GraphQL API consumption.
• Strong problem-solving skills, debugging, and optimization techniques.
• Excellent collaboration and communication skills.

Preferred Skills/Experience

• Experience with SSR (Server-Side Rendering) and ISR (Incremental Static Regeneration) in Next.js.
• Familiarity with state management libraries (Redux, Zustand, Recoil, etc.).
• Exposure to vector databases or AI-driven UI personalization.
• Prior experience working in a SaaS or data-heavy application environment.

Responsibilities

• Use markup languages like HTML to create user-friendly web pages
• Maintain and improve website
• Optimize applications for maximum speed
• Design mobile-based features
• Collaborate with back-end developers and web designers to improve usability
• Get feedback from, and build solutions for, users and customers

Requirements and skills

• Proven work experience of 4-5 years as a Front-end developer
• Hands on experience with markup languages
• Experience with JavaScript, CSS and jQuery
• Familiarity with browser testing and debugging

1. Solid technical skills with a proven and successful history working as a Front End Developer
2. Experience & Knowledge in Angular, React & Vuejs
3. Good working knowledge on Bootstrap, CSS, HTML5, JavaScript and TypeScript
4. Excellent interpersonal abilities, communication skills, time management and Team skills with an intention to work hard to meet project deadline

Role : React JS Developer 

• 1-4 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} 

• Designing, developing, and testing UI for mobile and web applications
• Build reusable code and libraries for future use
• Accurately translate user and business needs into functional frontend code.
• Developing new user-facing features using React and redux
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high-quality code with proper standards.
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
• Work with outside data sources and APIs.
• Added Advantage: Knowledge and experience in Cloud Computing

Backend Developer

*H1 is a Spanish fin/proptech that revolutionizes the mortgage market by offering bank-risk approved loans before knowing the house an individual wants to purchase. It also offers a powerful selling tool for real estate agents and developers that helps manage their businesses. From there, H1 is building a community of millions of high credit profile users (individuals + companies) that use the credit marketplace technology to access a multiproduct platform (including banking and non-banking capital and multiple financial and credit scoring products) that becomes a financial partner for individuals and companies as well as a personal documentation encrypted storage for all family or group members (SAAS model).

*H1 is the future of digital banking. 

*Recently capitalized, and in a strong growth phase to expand nationally and into 5 additional countries.

About the Job:

H1 seeks backend developers with experience on NodeJS, Typescript and PostgreSQL for our development team

In this role, you will report directly to the CTO

Agile based organization, with bi-weekly sprints on long-term project

Responsibilities:

• Build an extraordinary tech product (software) from an user centric perspective, for all the different actors involved with the organization and in direct contact with the technology (clients, management, finance, risk/operations team, commercial team, marketing, etc.) 
• Working with the CTO to build the roadmap and agile based organization required.
• Develop application api centric on security and encryption
• Receive and react to product feedback from all internal and external stakeholders
• Product KPIs, and product releases on a recurring basis
• Producing reports to monitor level of usability, engagement, etc. (product metrics and analytics)
• Contributing to deliver the expected results from a usability and engagement perspective

About You:

• With strong software product background, and extraordinary capabilities in terms of product strategy development and usability 
• 3-6+ years robust experience on developing software products in an agile based organization
• Demonstrated success in bringing new products to market, capturing market share and delivering market leading products and services.
• Clear examples of products managed or developed during his/her career 

• Strategic thinking: you are able to think at the strategic level and make the link with the pixel level 
• Able to work in a flat and transparent manner within a fast paced environment
• Results oriented
• Academic education in tech/product/digital related careers
• High level english (spoken and written). Spanish at any level would be a great plus.
• Entrepreneurial mindset: Is looking for a very ambitious project. Due to the stage of growth kick-off the upside could be extraordinary (a life-time opportunity)

Skills:

• Great flavour towards software products
• High expertise and excellence on software usability and user experience optimization. Expertise in software design
• Sensitivity towards customers and users
• Data driven decision making
• Deep knowledge of the digital world
• Fintech / Proptech / Digital banking background experience will be very positively considered, but not necessarily needed
• NodeJS with Typescript development experience
• API Rest and GraphQL with json web tokens authentication
• PostgreSQL and ORM experience
• NPM private libraries creation would be a plus
• Experience in working with tech teams, on an agile based style
• Proactive and able to take initiative. Decisive and resolute
• “Out of the box” thinker
• Creative thinker
• Works well in a team and with a wide range of people from different backgrounds and ages
• Organised and methodical
• Succeeds under pressure
• Is able to have fun and keep a positive atmosphere in the team

Location of Headquarters: Madrid, Spain

Tech Hub in India: Office in Bangalore, Karnataka (India). Full tech team between Madrid, Spain + Bangalore, India

This is a unique opportunity to contribute heavily to the growth of an innovative, market-leading Fintech & Proptech company.

Salary Range: 40k-90k Rupees monthly (5 Lakhs - 11 Lakhs per annum)

Interview Kickstart is one of the leading platforms helping Software Engineers prepare for tough technical interviews. Over the last 5 years we have helped over 3000 engineers Nail the toughest technical interviews on the planet. We are successful, profitable, and have a vision of building the world's largest Career Upleveling platform. 

We are looking for top-notch, motivated engineers to come join our growing team at IK.

Who you are

• You have 2 - 7 years experience.
• You love the buzz of a highly productive and fast moving team.
• Strong product and design sensibilities and an obsessive attention to detail.
• You have a get-things-done attitude and deep empathy for users and fellow teammates.
• You can write testable, maintainable code that’s easy to understand.
• You love coding and look forward to taking on complex, abstract features.
• You don't care about front end, backend kinda titles. You like working anywhere in the "stack".
• You are looking to grow fast with a company that's on a rapid growth path.

What will excite us

• Previous startup experience or experience being part of early teams.
• Experience with the Django & Python universe.
• Experience with both Relational and NoSQL DBs.
• Competitive Programming experience.
• A keen desire to problem solve, brainstorm and debate during the interview.

What will excite you

• Complete ownership
• Experiment, fail and learn.
• High pedigree, high caliber team.
• Contribute to every area of our business. Have a real impact with your work.
• Top of the line compensation.

Requirements

• 3+ years of experience developing modular front-end components using HTML, CSS, JavaScript/Jquery, JSON and micro formats.
• 2+ years of experience in React.
• Played with Webpack and Modular architecture.
• Solid understanding of user-centered design principles.
• Experience in cross-browser compatibility.

Our interview process is designed to help you show the best version of yourself. Once your candidature is finalized, we'll send you a short video explaining the interview process.

Look forward to speaking with you soon!