Senior Frontend Developer (React)

Responsibilities:

• Design, build, and maintain scalable, high-quality frontend applications using modern JavaScript/TypeScript and frameworks such as React.
• Implement accessible, responsive, and performant user interfaces that work seamlessly across browsers, platforms, and devices.
• Collaborate with backend engineers to integrate RESTful APIs and deliver end-to-end functionality.
• Apply best practices in web development, including clean code, testing (Jest, Cypress, Playwright, etc.), and Agile/Lean methodologies (TDD, BDD, ATDD).
• Contribute to DevOps practices by supporting CI/CD pipelines, testing automation, and deployment processes.
• Stay current with emerging frameworks and technologies to continuously improve development workflows and product quality.

• Commercial experience as a Frontend Software Developer
• Best-practices regarding all aspects of web development including design, semantic HTML mark-up, CSS, TypeScript, and related technologies.
• Exposure to a variety of JavaScript frameworks and libraries such as: React, Redux, React-Router and testing with React Testing Library Jest, Cypress, Playwright, Jasmine, Enzyme, Mocha.
• Awareness and practice of UI performance best practices.
• Understanding and exposure to integrating REST API endpoints.
• Strong experience and understanding of industry standard web accessibility, web design & usability; to support sites cross browser/platform/device.
• A desire to write readable, maintainable, modular and extendable code.
• Exposure to the DevOps model.
• Experience in Lean and Agile environments and understanding of principles behind methodologies such as: BDD, ATDD and TDD.

Good-to-have skills:

• Experience of using Node.js to create high traffic applications. Perhaps using Express.js, Sails, Koa or similar.
• Experience with Responsive Web Design.

We are looking for someone based in Budapest, Hungary. This role will imply a hybrid working model with 2 days/week presence at client's office.