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 .

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





You’re the rare engineer who can both design a system and write the React component that lives on top of it. Join us to architect and build our flagship products end-to-end, while shaping the platform that makes the whole team move faster.

The Mission

As a Principal Engineer with a Full Stack & Platform mandate, your dual mission is to:

Key Responsibilities

- Lead by Building: Architect and personally ship the most critical product surfaces, setting the bar for end-to-end engineering quality.
- Own the Full Stack: Make sound decisions across frontend, backend, and infrastructure, and write code at every layer when needed.
- Build the Paved Road: Shape our platform (CI/CD, Kubernetes, IaC, observability) so other engineers ship faster and more safely.
- Harvest Reusable Patterns: Generalize what works into shared components, services, and architectural patterns — extending both the design system and the platform.
- Multiply Velocity: Mentor senior engineers, lead architecture conversations, and remove friction wherever it slows the team down.

Qualifications Technical Requirements
- Full Stack Mastery: Expert-level React/TypeScript on the frontend, and deep experience building distributed backends in Go, Python, or TypeScript.
- Cloud & IaC: Hands-on, architectural-level experience with a major cloud (GCP, AWS) and Terraform.



You don’t just use it;
you architect with it.
- Containers & CI/CD: Strong knowledge of Docker, Kubernetes, and modern CI/CD pipelines built from scratch (GitHub Actions, GitLab CI).
- Systems Design: Proven track record designing distributed, cloud-native systems that are scalable, resilient, and observable.
- Product Sensibility: Experience partnering with Product and Design to ship interfaces that users actually love.
- Observability & Quality: Practical experience with observability tooling (Prometheus, Grafana, Jaeger) and testing strategies that scale.

Who You Are
- You have 10+ years of experience, with strong backgrounds in both product engineering and platform/SRE work.
- You are a builder first. You don’t run architecture review boards, you write the code that makes them unnecessary.
- You believe the best architecture is the simplest one that works, and that great products and great platforms are built by the same kind of mindset.
- You measure your success by the velocity, autonomy, and pride of the engineers around you.

Additional Information Why SGS?
- Opportunity to work with a general leader in inspection, verification, testing, and certification.
- Collaborative and inclusive work environment.
- Competitive salary and benefits package.
- Opportunities for professional growth and development.

Join Us: At SGS, we are dedicated 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.

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📌 Principal Engineer (Madrid)
🏢 SGS
📍 Madrid