About Mindera At Mindera, we leverage technology to build products we are proud of, with people we love. We partner with clients to develop scalable, resilient, and customer-centric digital products that create meaningful business impact. We foster a culture of collaboration, autonomy, continuous learning, and engineering excellence. Role Overview We are looking for a highly skilled Senior React.js Developer with strong experience in building modern, scalable web applications within the E-commerce domain . The ideal candidate should have expertise in React.js, TypeScript, and modern frontend architecture , with exposure to Next.js being highly preferred. Key Responsibilities Design, develop, and maintain scalable and high-performing web applications using React.js and TypeScript. Build reusable components and frontend libraries for future use. Develop responsive and mobile-first user interfaces for e-commerce platforms. Collaborate with cross-functional teams to translate business requirements into technical solutions. Optimize applications for maximum speed, scalability, SEO, and performance. Implement state management solutions using Redux, Context API, Zustand, or similar technologies. Participate in architectural discussions and contribute to frontend design decisions. Write clean, maintainable, and testable code following best engineering practices. Conduct code reviews and mentor junior developers. Integrate frontend applications with RESTful APIs and GraphQL services. Work closely with DevOps teams to support CI/CD and deployment activities. Troubleshoot production issues and provide timely resolutions. Ensure application accessibility, security, and performance standards are met. Required Skills & Experience Frontend Technologies Strong hands-on experience with: React.js TypeScript JavaScript (ES6+) HTML5 CSS3 / SCSS Experience with component-based architecture and reusable design systems. Experience with frontend state management libraries: Redux Redux Toolkit Context API Zustand (nice to have) Modern Web Development Strong understanding of: Single Page Applications (SPA) Progressive Web Applications (PWA) Responsive Design Web Performance Optimization Browser Compatibility Accessibility Standards (WCAG) Testing Experience with: Jest React Testing Library Cypress or Playwright Understanding of unit, integration, and end-to-end testing. Version Control & DevOps Git GitHub/GitLab/Bitbucket CI/CD pipelines Agile development methodologies Preferred Skills Strong experience with Next.js . Experience implementing: Server-Side Rendering (SSR) Static Site Generation (SSG) Incremental Static Regeneration (ISR) Experience with headless commerce platforms. Exposure to micro-frontend architecture. Experience with Tailwind CSS or modern styling frameworks. Familiarity with cloud platforms such as AWS, Azure, or GCP. Knowledge of frontend monitoring and observability tools. E-commerce Domain Experience (Mandatory) Candidates should have experience working on one or more of the following: Online retail platforms Product catalog management Search and filtering systems Shopping cart and checkout journeys Payment gateway integrations Customer account management Order management systems Loyalty and promotions platforms Inventory visibility solutions Personalization and recommendation engines We offer Competitive salary Annual bonus, subject to company performance Access to Udemy online training and opportunities to learn and grow within the role At Mindera we use technology to build products we are proud of, with people we love. Software Engineering Applications, including Web and Mobile, are at the core of what we do at Mindera. We partner with our clients, to understand their products and deliver high-performance, resilient and scalable software systems that create an impact on their users and businesses across the world. You get to work with a bunch of great people, and the whole team owns the project together. Our culture reflects our lean and self-organisation attitude. We encourage our colleagues to take risks, make decisions, work in a collaborative way and talk to everyone to enhance communication. We are proud of our work and we love to learn all and everything while navigating through an Agile, Lean and collaborative environment. Check out our Blog: http://mindera.com/ and our Handbook: http://bit.ly/MinderaHandbook Our offices are located: Porto, Portugal | Aveiro, Portugal | Coimbra, Portugal | Leicester, UK | San Diego, USA | Chennai, India | Bengaluru, India