• Lead the end-to-end CMS migration from HubSpot to Sanity + Next.js, including content modeling, schema architecture, content migration, URL preservation, redirects, and SEO continuity. • Design and build a comprehensive library of reusable, design-approved components in collaboration with the Brand team, enabling the Marketing team to publish pages autonomously after migration. • Integrate HubSpot CRM (forms, lead capture, tracking) and GA4 analytics into the new stack so Sales and Marketing keep everything they rely on today. • Set up the Claude Code + Sanity MCP integration, configure access and permissions, and train the Marketing and Brand teams to operate the website through natural language commands to Claude. • Implement technical SEO and AIO optimization through schema markup, structured data, Core Web Vitals improvements, and content structures optimized for AI-driven discovery. • Manage the underlying website infrastructure including CI/CD pipelines, staging environments, hosting (Vercel or similar), and monitoring to ensure reliability and fast iteration cycles. • Build interactive elements where needed (live stats dashboards, embedded tools, custom landing page experiences) that reflect OpenZeppelin's identity as a leading technology and security company. • Document architecture, workflows, and team-facing processes thoroughly so OpenZeppelin is genuinely self-sufficient at the end of the engagement. • Handle ongoing website requests (new pages, bug fixes, integrations) during the engagement period.

• Develop and maintain backend APIs and modern frontend interfaces (Next.js App Router) • Contribute to critical modules such as: fee calculation engine, ledger system, and smart routing mechanisms • Design and optimize high-performance data models with Prisma / ZenStack and PostgreSQL • Build merchant and admin dashboards (React) • Participate in architectural decisions in a high-security environment (PCI-DSS) • Write robust tests and participate in code reviews • Work closely with the engineering team on the platform’s evolution

• Lead the development of scalable frontend components and features using React.js and modern JavaScript frameworks. • Write clean, maintainable, and reusable code following frontend engineering best practices and coding standards. • Build responsive, accessible, and user-friendly interfaces across web applications. • Partner with Product Managers, Designers, and Backend Engineers to translate business requirements and design concepts into functional user experiences. • Contribute to improving overall user experience, visual consistency, and frontend architecture. • Optimize frontend applications for speed, responsiveness, scalability, and cross-browser compatibility. • Improve rendering performance and application efficiency across desktop and mobile devices. • Implement best practices for frontend performance monitoring and optimization. • Integrate frontend components with backend APIs, services, and data sources. • Work collaboratively with cross-functional teams to ensure seamless end-to-end product functionality. • Participate in technical discussions and contribute to architectural decisions. • Conduct code reviews to ensure maintainability, scalability, and code consistency. • Mentor and support junior frontend engineers through technical guidance and best practices. • Promote strong engineering culture and continuous improvement across the team. • Stay updated with the latest frontend technologies, frameworks, and industry trends. • Evaluate and adopt modern tools and practices that improve developer productivity and product quality.

Role Description We are looking for a highly skilled and experienced Senior Frontend Engineer with strong expertise in React.js to join a fast-growing engineering team building next-generation enterprise AI products. This role focuses on architecting and developing modern, scalable, and high-performance web applications that deliver intuitive and engaging user experiences. - Lead the development of scalable frontend components and features using React.js and modern JavaScript frameworks. - Write clean, maintainable, and reusable code following frontend engineering best practices and coding standards. - Build responsive, accessible, and user-friendly interfaces across web applications. - Partner with Product Managers, Designers, and Backend Engineers to translate business requirements and design concepts into functional user experiences. - Contribute to improving overall user experience, visual consistency, and frontend architecture. - Optimize frontend applications for speed, responsiveness, scalability, and cross-browser compatibility. - Improve rendering performance and application efficiency across desktop and mobile devices. - Implement best practices for frontend performance monitoring and optimization. - Integrate frontend components with backend APIs, services, and data sources. - Work collaboratively with cross-functional teams to ensure seamless end-to-end product functionality. - Participate in technical discussions and contribute to architectural decisions. - Conduct code reviews to ensure maintainability, scalability, and code consistency. - Mentor and support junior frontend engineers through technical guidance and best practices. - Promote strong engineering culture and continuous improvement across the team. - Stay updated with the latest frontend technologies, frameworks, and industry trends. - Evaluate and adopt modern tools and practices that improve developer productivity and product quality. Qualifications - Bachelor’s degree in Computer Science, Engineering, or a related field. - 4+ years of experience in frontend development with strong expertise in React.js. - Strong proficiency in JavaScript, HTML5, CSS3, and modern frontend development practices. - Experience with CSS preprocessors such as Sass or Less. - Familiarity with state management libraries such as Redux or MobX. - Understanding of asynchronous programming concepts and API integrations. - Strong knowledge of responsive design and mobile-first development principles. - Experience optimizing frontend performance and understanding browser rendering behavior. - Hands-on experience with Git and collaborative development workflows. - Excellent problem-solving, communication, and teamwork skills. Requirements - Experience working on enterprise SaaS or AI-driven platforms. - Familiarity with frontend testing frameworks and component libraries. - Exposure to scalable design systems and modern UI architectures. - Experience working in agile and fast-paced product environments. Benefits - Salary range: Rs 4000000 - Rs 8000000 (ie INR 40-80 LPA) - Location: Remote (India) - Job Type: full-time