Frontend Developer (React js, Next js)

Location:

Bengaluru, Karnataka (Onsite)

About the Company:

Sustainability Economics.ai is a global organization, pioneering the convergence of clean energy and AI, enabling profitable energy transitions while powering end-to-end AI infrastructure. By integrating AI-driven cloud solutions with sustainable energy, we create scalable, intelligent ecosystems that drive efficiency, innovation, and long-term impact across industries. Guided by exceptional leaders and visionaries with decades of expertise in finance, policy, technology, and innovation, we are committed to making long-term efforts to fulfil this vision through our technical innovation, client services, expertise, and capability expansion.

Role Summary:

We are seeking a motivated Frontend Developer to design, build, and maintain interactive and responsive web applications. You will translate UI/UX designs into efficient, maintainable code while creating dynamic visualizations using libraries like D3.js and Three.js . You will work across the full product lifecycle, collaborating closely with backend developers, designers to deliver high-performance, visually rich applications.

Key Responsibilities:

• Develop, optimize, and maintain React and Next.js based components and applications.
• Create dynamic and interactive data visualizations using D3.js and 3D/graphics experiences using Three.js .
• Convert UI/UX designs into responsive HTML, CSS, and TypeScript code.
• Integrate APIs and backend services with front-end applications.
• Debug and resolve performance, compatibility, and responsiveness issues.
• Write clean, scalable, reusable, and well-documented code.
• Collaborate with cross-functional teams to ensure high-quality product delivery.
• Stay updated on modern web development tools, visualization libraries, and best practices.

Education & Experience:

• Bachelors or Masters degree in Computer Science, Information Technology, or a related field.
• Minimum 1 year of professional experience as a Frontend Developer, UI Developer, or similar role.
• Strong knowledge of HTML, CSS, JavaScript, and front-end frameworks (React, Next.js).
• Experience with CSS libraries/frameworks such as Bootstrap, Tailwind, SASS, and CSS GRID systems.
• Experience with Chart JS, D3.js and Three.js is required.
• Basic knowledge of cloud platforms such as AWS is a plus.

Skills Required:

• Proficiency in React, Redux, Next.js, and TypeScript.
• Strong experience in API integration and front-end architecture.
• Expertise in interactive data visualization using D3.js and 3D graphics using Three.js .
• Knowledge of responsive design, cross-browser compatibility, and performance optimization.
• Proficiency with version control tools like Git.
• Strong problem-solving, analytical thinking, and debugging skills.

What Youll Do:

• Build and maintain web applications for international-scale platforms.
• Translate design mock-ups into functional, responsive, and visually rich interfaces.
• Collaborate with Backend engineers to integrate APIs and services.
• Ensure web applications meet performance, accessibility, and scalability standards.
• Continuously monitor, maintain, and improve front-end code quality and application performance.

What You Will Bring:

• Proven experience in building scalable, interactive, and visually engaging web applications.
• Strong understanding of front-end technologies, visualization libraries, and best practices.
• Passion for clean code, user experience, and web performance.
• Ability to work collaboratively in a fast-paced startup environment.
• Startup DNA bias to action, comfort with ambiguity, love for fast iteration, and growth mindset.

Why Join Us

• Shape a first-of-its-kind AI + clean energy platform .
• Work with a small, mission-driven team obsessed with impact.
• An aggressive growth path.
• A chance to leave your mark at the intersection of AI and sustainability .