Company Description

SGS is the world’s leading Testing, Inspection and Certification company. We operate a network of over 2,500 laboratories and business facilities across 115 countries, supported by a team of over 100,000 dedicated professionals. With more than 145 years of service excellence, we combine the precision and accuracy that define Swiss companies to help organizations achieve the highest standards of quality, compliance and sustainability.
Our brand promise – “when you need to be sure” – underscores our commitment to trust, integrity and reliability, enabling businesses to thrive with confidence. We proudly deliver our expert services through the SGS name and a portfolio of trusted specialized brands, including Applied Technical Services, Brightsight, Bluesign and Nutrasource.

Job Description

As a Senior Frontend Developer, you will play a key role in building high-quality, scalable, and user-centric web applications. You will take ownership of frontend architecture in collaboration with the UX/UI Technical Leader,



ensuring a seamless and performant user experience across our products.
You will work closely with product managers, designers, and backend engineers to translate business requirements into elegant and efficient frontend solutions.
Responsibilities:
- Design, build, and maintain scalable, high-performance frontend applications.
- Own and evolve frontend architecture, ensuring maintainability and scalability.
- Collaborate closely with UX/UI designers to deliver intuitive and visually consistent user experiences.
- Translate product and design requirements into clean, efficient, and reusable code.
- Promote best practices in frontend engineering (Clean Code, testing strategies, component design).
- Implement and maintain design systems and reusable component libraries.
- Optimize application performance (loading time, rendering, responsiveness).
- Ensure cross-browser compatibility and responsiveness across devices.
- Integrate frontend ap

📌 Senior Frontend Developer (Madrid)
🏢 CH-Bluesign
📍 Madrid