Software Engineer

Sanofi is transforming how medicines are made and delivered—using cutting-edge technology, data, and AI to bring new treatments to patients faster and more affordably across the globe. This is a chance to make a real impact as part of a small, autonomous, and high-performing team shaping the future of digital healthcare.

Location: Lyon, France (Hybrid) Languages: English (French is a plus)

What you’ll do:

• Design, deliver, and operate software solutions that accelerate the delivery of life-changing medicines.
• Ensure the scalability, maintainability, and reliability of complex systems.
• Contribute to the technical vision within your project while aligning with Sanofi’s broader engineering strategy.
• Translate requirements into high-quality, performant, and secure code.
• Collaborate with product managers, data engineers, and peers to achieve on-time delivery.
• Take ownership of technical decisions and support the full software development lifecycle—from concept to production.
• Champion best practices in software engineering, testing, and documentation.
• Build and maintain modern, cloud-native applications designed for impact and scale.
• Engage in code reviews, mentoring, and knowledge sharing across teams.
• Communicate clearly and proactively with technical and non-technical stakeholders.

Requirements:

• 5+ years of professional experience in software engineering (or equivalent knowledge).
• Strong proficiency in JavaScript / TypeScript (Node.js) and React or similar frontend frameworks.
• Deep understanding of microservice architectures, API design, and cloud security best practices.
• Hands-on experience with CI/CD pipelines, DevOps principles, and Infrastructure as Code (Terraform, AWS CDK, or similar).
• Experience working with at least one major cloud provider (AWS, GCP, or Azure).
• Strong problem-solving skills with a growth mindset and curiosity for learning new technologies.
• Excellent communication and collaboration abilities in an agile environment.
• Bachelor’s degree in Computer Science, Engineering, or equivalent experience is a plus.

Benefits:

• Be part of a global healthcare pioneer shaping the future of medicine through digital innovation.
• Work in a dynamic, collaborative environment where your ideas drive real-world impact.
• Grow your career with diverse development opportunities, including promotions, lateral moves, or international assignments.
• Benefit from a comprehensive rewards package that recognizes your contribution and amplifies your impact.
• Enjoy extensive health and wellness programs, high-quality healthcare, and at least 14 weeks of gender-neutral parental leave.
• Join a company where digital meets purpose—building products that help millions of people around the world live healthier lives.