Senior Mern Stack developer

About the Role

We are seeking a creative and technically strong Frontend Developer with expertise in 3D animations to join our team. You will play a key role in building interactive, visually engaging, and high-performance web applications using modern frameworks and 3D libraries. This role involves close collaboration with designers, product managers, and backend engineers to deliver immersive digital experiences.

Key Responsibilities

• Develop and maintain responsive, user-friendly web applications.
• Implement 3D models, animations, and interactions using Three.js, WebGL, or Babylon.js.
• Collaborate with UI/UX designers to transform creative concepts into smooth, interactive experiences.
• Optimize performance for real-time rendering and animations across devices and browsers.
• Integrate backend APIs for data-driven 3D visualizations and dynamic content.
• Stay updated with the latest trends in frontend development, 3D frameworks, and animation tools.
• Ensure cross-browser compatibility, scalability, and maintainability of code.

Required Skills & Qualifications

• 3+ years of professional experience as a Frontend Developer.
• Strong proficiency in HTML5, CSS3, JavaScript (ES6+).
• Experience with React.js / Next.js (or other modern frontend frameworks).
• Hands-on expertise in 3D libraries: Three.js, WebGL, Babylon.js (or similar).
• Knowledge of animation frameworks: GSAP, Framer Motion, Anime.js.
• Strong understanding of rendering performance optimization (shaders, textures, lighting).
• Familiarity with design tools: Figma, Adobe XD, Blender, or similar.
• Excellent problem-solving, debugging, and communication skills.

About the role

Our UX is a key differentiator. We invest heavily in UI, aiming for a snappy and intuitive experience. We believe in Product-Led Growth, which holds that even enterprise adoption of software tools begins with individual users. The key to achieving this is creating a user experience that prompts customers to respond quickly. We are investing in amazing UX at every touchpoint: website, help docs, dev docs, community, contacting support, asking sales for a demo, etc. This work is high-impact as it affects not only the immediate business goals of driving sign-ups but will have a long-lasting impact on our brand.

About the role

Our UX is a key differentiator. We invest heavily in UI, aiming for a snappy and intuitive experience. We believe in Product-Led Growth, which holds that even enterprise adoption of software tools begins with individual users. The key to achieving this is creating a user experience that prompts customers to respond quickly. We are investing in amazing UX at every touchpoint: website, help docs, dev docs, community, contacting support, asking sales for a demo, etc. This work is high-impact as it affects not only the immediate business goals of driving sign-ups but will have a long-lasting impact on our brand.

What it means to be an early engineer

Being part of the founding team, you will have the opportunity to shape the future of sustainable energy. Together, we’re going to face the hardest technical challenges this journey has to offer head-on. As the team grows, you’ll be the battle-hardened expert that everyone looks to for guidance. Your role will be pivotal in building a mission-critical analytics platform that encompasses predictive ML models, real-time analytics, and user-friendly dashboards.

As a Frontend Engineer, here’s what you’ll be doing

• Develop our web applications using React, Redux, Next.js, HTML, CSS
• Build scalable and interactive data visualization components for complex analytics
• Integrate external tools for product analytics
• Create and execute test plans and test cases ensuring high-quality user experiences
• Quickly develop proof of concepts (POCs) for new features or product ideas
• Regularly update and maintain website content and assets

We are excited about you because you have:

• Proven 4+ years of experience as a Frontend Developer with a strong portfolio of web applications developed using React, Next.js, and other similar technologies
• Strong understanding of HTML and various CSS Frameworks
• Familiarity with integrating advanced charting libraries, maps, calendars, and other third-party components into web applications
• Proven expertise in handling browser components DOM, Cookie, Session etc
• Proficiency in frontend testing methodologies for flawless user experience and optimizing web application performance
• Good understanding of website management and maintenance, SEO, CMS, etc.

You’ll be a great fit if:

• You have 4+ experience in building frontend applications
• Previously worked in a startup environment and have a high degree of ownership and appetite for ambiguity
• Like being a part of a high-performing team focussed on fast-paced execution at the same time detail-oriented
• A relentless desire to solve customer problems and chase down answers

Why choose Our Client?

We're the leader in battery analytics and are backed by prominent investors like YC. Today, we're the only company single-mindedly focused on enabling the world's transition to electric vehicles. We are among the most innovative companies that use data to uncover insights about electric vehicles and batteries. More importantly, you will have the opportunity to implement your tech skills to solve real-world issues like climate change. Let's do something great together.

Why choose Our Client?

• Developing new user-facing features using React.js
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high-quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers

• 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 (Redux)
• Familiarity with newer specifications of ECMAScript
• Experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial)

As a member of the founding engineering team at Kombai, you'd work directly with the CTO and CEO to build a global product for the frontend dev teams from scratch. Together, we'd have a crack at several hard, high-impact problems - often involving challenges across product, engineering, and research areas.

Desired Qualifications & Skillset

For all positions of our early engineering team we are looking for people who:

• Are fully hands-on with latest JS development
• Are good frontend and web application architects
• Are quick and agile
• Have a good learning, problem solving and logical aptitude
• Have a mindset to commit for 3-4 years

In addition to the above, the candidates for Senior Product Engineer should also have:

• Thorough understanding of good Frontend engineering & architecture practices. In our experience, this usually comes from working in an excellent frontend team with an excellent architect, on a complex applications
• Experience: 3-6 years

We are looking for a Product Engineer - Senior or Lead Frontend Engineer to join our early stage startup with experience in building B2C products. 

If you have experience of working in product based companies (preferably startups), good to excellent coding skills in react js and typescript, have a keen eye for details in the UI, and are looking to build exciting things that children across the world will use - come talk to us!

What you get to do:

• Design and build advanced applications from scratch keeping scalability and performance in mind
• A good handle on both client and server architecture.
• Work on bug fixing and improving application performance.
• Comfortable in owning large scale products and continuously re-evaluating and innovating.

Who are we looking for:

• Bachelor's degree or equivalent in Computer Science
• 5+ years' experience in frontend development
• Familiarity using Scrum/Agile development methodologies
• Experience building object oriented web applications in React JS, Typescript, HTML5, and CSS3
• Should be a quick learner and willing to go the extra mile in delivering the projects.
• Should be able to mentor junior folks whenever necessary.

Recko Inc. is looking for front-end developers to join our kick-ass engineering team. We are looking for smart, dynamic individuals to bridge the gap between design and technical implementation and define how our software looks as well as how it works.

What are we looking for:

1. Deep understanding of Javascript(ES6) and of at least one test frameworks

2. Overall 1-4 years of Experience in web Development and at Least 1-2 years experience on ReactJS Library.

3. Curious to learn new things and adopting new standards

4. Experience of building at least one frontend application from scratch/ building a SaaS product

5. Good understanding of webpack, CSS pre processors, react-redux architecture, redux-saga.

6. Understanding of design frameworks, UX patterns for web

7. Ability to think strategically and implement with excellence

8. A growth mindset and passionate about building things from the ground up, and most importantly, you should be fun to work with

As a frontend developer at Recko, you will:

1. Develop new user-facing features as well as maintain and improve the application

2. Build reusable code and libraries for future use

3. Ensure the technical feasibility of UI/UX designs while maintaining high quality standards and brand consistency

4. Optimize application to handle high scale

5. Work closely with Product managers, UX designers and back-end engineers to implement frontend solutions.

6. Follow secure coding practices to avoid vulnerabilities like XSS, CSRF

7. Actively participate in code and design reviews to build robust applications.

About Recko:

The Recko Financial Operations Platform empowers finance teams in fast-growing internet businesses with a comprehensive and robust technology stack to build and embed innovative financial workflows such as accounting, reconciliation, commission calculation, payment orchestration and reporting, so businesses can accelerate growth, collaboration, and track and manage money end to end. This ensures that every dollar, euro or pound that the company moves is accounted for and the financial needs of the ever evolving business is taken care of.

Globally, the Recko platform securely processes transactions worth millions of dollars every day. Customer-obsessed brands such as Deliveroo, Meesho, Grofers, Dunzo, Acommerce, etc use Recko so that their finance teams can streamline operations with automation and prioritize growth over repetitive and time-consuming tasks around day-to-day financial operations. Our transparent pricing and exceptional customer service guarantees that we power your growth story - one transaction at a time.

Recko is a Series A funded startup, backed by marquee investors like Vertex Ventures, Prime Venture Partners and Locus Ventures. Traditionally enterprise software is always built around functionality. We believe software is an extension of one’s capability, and it should be delightful and fun to use.

Working at Recko:

We believe that great companies are built by amazing people. At Recko, We are a group of young Engineers, Product Managers, Analysts and Business folks who are on a mission to bring consumer tech DNA to enterprise fintech applications. The current team at Recko is 60+ members strong with stellar experience across fintech, e-commerce, digital domains at companies like Flipkart, PhonePe, Ola Money, Belong, Razorpay, Grofers, Jio, Oracle etc. We are growing aggressively across verticals.