Arηs Group, Part of Accenture, specializes in the management of complex public sector IT projects, including systems integration, informatics and analytics, solution implementation and program management. Our team helps lead clients through digital and information systems design, bringing expertise in a variety of areas ranging from software development, data science and security management to machine learning, cloud, and mobile development.

Arηs Group was acquired by Accenture in July 2024.

ARHS Group, part of Accenture, is looking for a Senior React Developer (m/f) to join one of our client teams onsite in Luxembourg within a European institutional environment.

In this role, you will contribute to the development of modern web applications and user-facing platforms, helping deliver intuitive, scalable, and high-quality digital solutions. You will work closely with business analysts, developers, testers, and technical leads in an Agile environment.

THE WORK:

• Design, develop, test, and maintain frontend web applications using React and JavaScript.
• Build reusable components and contribute to the evolution of shared UI libraries and design systems.
• Collaborate with business analysts, technical leads, and development teams to translate requirements into high-quality user interfaces.
• Ensure applications are responsive, accessible, and optimized for performance.
• Develop and maintain automated tests to ensure reliability and quality.
• Participate in code reviews and promote frontend development best practices.
• Deploy, monitor, and support applications running in containerized environments, both on-premises and in the cloud.
• Contribute to continuous improvement initiatives across development and delivery processes.

Onsite at client site: This role requires an onsite presence with our clients and partners to support project delivery and strengthen client relationships.

Our roles require in-person time to encourage collaboration, learning, and relationship-building with clients, colleagues, and communities. As an employer, we will be as flexible as possible to support your specific work/life needs.

HERE’S WHAT YOU’LL NEED:

• Strong experience in frontend development using React and JavaScript.
• Solid knowledge of:

• React (functional components, hooks, Context API)
• JavaScript
• HTML5 and CSS3
• REST APIs and JSON

• Experience building reusable components and contributing to shared design systems.
• Experience with frontend testing tools such as Jest and React Testing Library.
• Familiarity with modern build and package management tools such as NPM and Vite.
• Experience working with CI/CD pipelines, ideally using Azure DevOps.
• Understanding of responsive design principles and modern frontend development practices.
• Strong communication and collaboration skills.
• Fluency in English (written and spoken).

As part of our security and compliance procedures, candidates will be required to undergo a criminal background check prior to employment.