React.js Developer

Company Description

Cubera is an AI-first AdTech and Big Data company building the next generation of audience intelligence and programmatic advertising infrastructure. Our product suite spans Cube (AI-powered audience discovery), Edge (omnichannel DSP), and our ad exchanges Vertex and Advertex. As we scale our consumer-facing brands, video is becoming the primary language of our storytelling across social platforms. We are looking for a creator who lives at the intersection of generative AI and video craft.

Role Description

This is a full-time React.js Developer role for a candidate with 2–5 years of experience. The React.js Developer will develop and maintain modern, responsive web applications, building pixel-perfect UI from Figma designs. Day-to-day responsibilities include creating reusable components and maintaining a modular architecture, building reusable API service layers with configurable base URLs, and integrating RESTful APIs, WebSockets, and Webhooks. The role also involves integrating third-party SDKs and payment gateways like Razorpay, optimizing application performance and loading speed, debugging production issues, and collaborating closely with backend developers, UI/UX designers, and QA teams. The developer will also participate in code reviews and ensure cross-browser compatibility across all builds.

Qualifications

• 2–5 years of experience in React.js development with strong knowledge of JavaScript (ES6+), HTML5, and CSS3
• Experience with React Hooks, functional components, and Redux Toolkit or Context API for state management
• Experience building reusable components, modular architecture, and reusable API service layers
• Familiarity with Next.js, TypeScript, and Tailwind CSS/Material UI/Bootstrap
• Experience with React Query/TanStack Query, SEO optimization, and Firebase services
• Familiarity with CI/CD pipelines, performance optimization, and Git/GitHub
• Strong analytical, debugging, and communication skills; comfortable working independently in an Agile/Scrum environment