Senior .NET Developer

SGS

Madrid, MD, Spain Hybrid permanent

Posted: February 26, 2026

Required Skills

Job 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 precision and accuracy to help organizations achieve the highest standards of quality, compliance and sustainability.

Lead the technical delivery of SGS’s core applications, ensuring they are scalable, secure, and maintainable. As Senior .NET Developer, you will drive design decisions, guide development teams, and raise the bar for technical excellence through proactive leadership and a strong sense of ownership.

What You Will Do

• Own technical design and development standards.
• Guide internal teams and vendors with clear technical direction.
• Participate in code reviews and hands-on development when needed.
• Align solutions with enterprise architecture and security frameworks.
• Improve CI/CD pipelines and deployment processes.
• Modernise legacy applications and reduce technical debt.
• Strengthen problem management and system reliability.

• Bachelor’s or Master’s degree in Computer Science, IT, or related field.
• 5+ years of experience in full-stack development with .NET (C#), Azure, SQL Server, and Angular.
• Strong understanding of software architecture, secure coding, and DevOps practices.
• Experience across the full software development lifecycle (SDLC).
• Familiarity with Azure DevOps, Git, CI/CD, and SAST/SCA tools.
• Fluent in English, comfortable in a global, multicultural environment.
• Nice to have: Experience with Microsoft Dynamics or Java (Spring).

Why SGS?

• Be part of a globally recognised leader in the Testing, Inspection, and Certification (TIC) industry.
• Flexible schedule and hybrid work model (2 days per week in the office on average but also flexible when needed)
• Continuous learning through SGS University and Campus.

Apply Now:

At SGS, we are committed to fostering an open, friendly, and supportive culture that thrives on teamwork. We value diversity and provide endless opportunities to learn, grow your expertise, and fulfill your potential. Apply now to join our motivated and dynamic team!

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