Staff Software Engineer

At Sanofi, we believe our people are our greatest strength, and we are committed to creating an inclusive environment where diverse perspectives drive innovation. Our values — Aim Higher, Act for Patients, Be Bold, and Lead Together — guide everything we do

Main responsibilities

• Drive technical strategy across multiple teams and domains, designing scalable, resilient architectures for global eCommerce platforms — from customer-facing experiences to backend operations
• Own critical technical decisions, balancing engineering excellence with pragmatism to deliver high-quality solutions on time
• Champion best practices in cloud-native development, microservices, APIs, CI/CD, DevOps, and cybersecurity across the organization
• Mentor and grow senior engineers, fostering a culture of knowledge sharing, psychological safety, and continuous improvement
• Bridge engineering, product, and business teams, ensuring technical direction aligns with organizational goals and delivers real impact for patients
• Represent engineering in conversations with external partners and vendors, advocating for sound technical standards

About you

• Experience: Proven track record leading technical initiatives and mentoring senior engineers in fast-paced, innovative environments
• Technical skills: Proficiency in JavaScript/TypeScript (Node.js), React or equivalent, and an object-oriented language (Java, Python, C++, or similar); hands-on experience with cloud platforms (AWS, GCP, or Azure), Infrastructure as Code, microservices, API design, CI/CD, observability tools (e.g. DataDog), and automated testing
• Soft skills: Strong communicator and collaborative leader who can influence peers and leadership alike; growth mindset with a passion for innovation and learning
• Education: A background in Computer Science, Engineering, or equivalent practical experience
• Languages: Fluent English (written and verbal)

Why choose us?

• Global impact at scale — your work will directly support patients and healthcare professionals worldwide
• Force-multiplier role — your greatest contribution is elevating those around you, not just your own output
• Cutting-edge technology — work with modern cloud-native stacks on a platform that is actively being transformed
• Inclusive, people-first culture — join a team where diverse perspectives are celebrated and every voice matters
• Mission-driven work — every line of code contributes to making life-changing medicines more accessible worldwide

Pursue Progress. Discover Extraordinary.

Join Sanofi and step into a new era of science - where your growth can be just as transformative as the work we do. We invest in you to reach further, think faster, and do what’s never-been-done-before. You’ll help push boundaries, challenge convention, and build smarter solutions that reach the communities we serve. Ready to chase the miracles of science and improve people’s lives? Let’s Pursue Progress and Discover Extraordinary – together.

At Sanofi, we provide equal opportunities to all regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, protected veteran status or other characteristics protected by law.

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Pursue progress, discover extraordinary

Better is out there. Better medications, better outcomes, better science. But progress doesn’t happen without people – people from different backgrounds, in different locations, doing different roles, all united by one thing: a desire to make miracles happen. So, let’s be those people.

At Sanofi, we provide equal opportunities to all regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, ability or gender identity.

Watch our ALL IN video and check out our Diversity Equity and Inclusion actions at sanofi.com!

The salary range for this position is :€69.200,00 - €103.800,00

Final compensation will be determined based on demonstrated experience, skills, location, and other relevant factors. Employees may be eligible to participate in Company employee benefit programs.