Senior Frontend Developer - React.JS

About Mindera

At Mindera, we use technology to build products that improve the world. We partner with clients to deliver high-quality, scalable, and maintainable solutions, with a strong focus on collaboration, autonomy, and continuous learning.

We are looking for a Senior Frontend Engineer with deep expertise in React and proven experience in migrating Angular applications to modern React-based architectures. This role will be critical in driving frontend transformation initiatives and delivering seamless user experiences.

Requirements

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🔧 What You’ll Do

• Design, develop, and maintain high-performance, scalable frontend applications using React
• Lead and actively contribute to migration projects from Angular to React, ensuring clean architecture and minimal technical debt
• Analyze existing Angular codebases and define effective migration strategies (incremental or full rewrite)
• Build reusable, modular, and maintainable UI components and libraries
• Collaborate closely with Product, Design, and Backend teams to deliver intuitive and consistent user experiences
• Optimize applications for performance, scalability, and accessibility
• Ensure best practices in code quality, testing, and documentation
• Participate in code reviews and mentor other engineers within the team
• Contribute to architectural decisions and frontend strategy

🧠 What We’re Looking For

• Strong hands-on experience with React (Hooks, Context API, state management libraries)
• Proven experience in migrating Angular applications to React in production environments
• Solid understanding of JavaScript (ES6+), TypeScript, HTML5, CSS3
• Experience with modern frontend build tools (Webpack, Vite, Babel)
• Strong knowledge of frontend architecture patterns and design principles
• Experience in consuming and integrating RESTful APIs
• Familiarity with version control systems (Git) and collaborative workflows

☁️ Nice to Have

• Experience with Micro Frontends architecture
• Familiarity with testing frameworks (Jest, React Testing Library, Cypress)
• Exposure to CI/CD pipelines (GitHub Actions, Jenkins, etc.)
• Experience working with cloud environments (AWS, Azure, or GCP)
• Knowledge of performance monitoring and observability tools

Benefits

• Fun, happy and politics-free work culture built on the principles of lean and self-organisation;
• Work with large scale systems powering global businesses;
• Competitive salary and benefits.

About Mindera

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 product and deliver high performance, resilient and scalable software systems that create an impact in their users and businesses across the world.

You get to work with a bunch of great people, where 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://tinyurl.com/zc599tr

Our offices are located: Aveiro, Portugal | Porto, Portugal | Leicester, UK | San Diego, USA | San Francisco, USA | Chennai, India | Bengaluru, India