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.
Job DescriptionARHS 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.
Skills Required
- Strong experience in frontend development using React and JavaScript
- Knowledge of React functional components, hooks, Context API
- Proficiency with JavaScript, HTML5 and CSS3
- Experience working with 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
- Experience with Azure DevOps
- Experience deploying, monitoring, and supporting applications in containerized environments and cloud/on-premises
- Understanding of responsive design principles and modern frontend development practices
- Strong communication and collaboration skills
- Fluency in English (written and spoken)
- Onsite presence at client site in Luxembourg
- Criminal background check prior to employment
What We Do
Arηs Group is a market leader in the management of complex IT projects and systems. Founded in Luxembourg in 2003, we’ve grown organically to encompass 16 entities worldwide with over 2,500 employees in Luxembourg, Belgium, France, Greece, Italy, Portugal, Bulgaria and Jordan. With our focus on getting things done, we help our clients achieve their goals with best-of-breed solutions, superior execution and exceptional services. We offer bespoke software development, data science, infrastructure, digital trust and mobile development to government institutions at national and European level, telecom providers, and financial institutions, among others. Our bold company culture is built around working hard and playing hard, with a flat and agile structure that lends itself to efficiency and employee empowerment. We value our diverse workplace of close-knit teams and provide a place where everyone can be supported to learn and evolve.
