Le contenu du poste est libellé en anglais car il nécessite de nombreuses interactions avec nos filiales à l’international, l'anglais étant la langue de travail.

This job offer is accessible to all, regardless of gender.

Job Title

Accelerator Senior Software Engineer

Location & Employment Type

• Location: Lyon
• Work model: Hybrid – 60 % office based, 40 % remote
• Contract: Permanent, Full‑time

About the job

We are looking for a Senior Software Engineer (fullstack) to join the Manufacturing & Supply (M&S) Accelerator teams. Inside a small autonomous multi‑functional agile team, you will help launch new medicines faster to cover unmet needs and deliver them affordably across the globe. This role is ideal for someone who wants a high level of ownership to not only bring software every day to production but also wants to contribute to building a whole product and to solve actual problems.

About Sanofi

We’re an R&D‑driven, AI‑powered biopharma company committed to improving people’s lives and delivering compelling growth. Our deep understanding of the immune system – and innovative pipeline – enables us to invent medicines and vaccines that treat and protect millions of people around the world. Together, we chase the miracles of science to improve people’s lives.

Main responsibilities

Scope & impact

• Designs, delivers, and runs software solutions that accelerate bringing medicines to the patients
• Ensures the scalability, maintainability, and reliability of the systems developed
• Contributes to the technical vision within a project scope while aligning with the broader engineering strategy

Prioritization & execution

• Translates requirements into high‑quality, performant code
• Collaborates with peers, product managers, and data engineers to ensure timely delivery
• Owns technical decisions and ensures effective execution of assigned work
• Values unowned or less visible work that enables the team to move faster

Technical excellence

• Develops strong technical expertise in domains relevant to M&S innovation
• Upholds high standards in software engineering, testing, and documentation
• Advocates for best practices and contributes to team‑wide technical standards
• Builds and maintains modern and cloud‑native applications

Collaboration & contribution

• Works closely with teammates and cross‑functional partners to solve problems
• Supports team initiatives by contributing to shared codebases, tools, and processes
• Engages in code reviews, mentoring opportunities, and knowledge sharing
• Communicates clearly and proactively with both technical and non‑technical stakeholders

About you

Soft & behavioral skills

• Strong problem‑solving and critical thinking skills
• Collaborative, flexible, and proactive team player with initiative and ownership
• Excellent written and verbal communication in English
• Growth mindset with enthusiasm for learning new technologies and approaches
• Innovation‑focused with a willingness to experiment and suggest improved ways of working

Your background

• 7 + years of experience (or equivalent knowledge). If you feel qualified, apply regardless of years of experience
• Bachelor’s degree in Computer Science, Engineering, or equivalent experience is a plus
• Experience in an innovative, fast‑paced environment

Technical requirements

• Proficiency in JavaScript / TypeScript (Node.js)
• Proficiency in React or similar frameworks
• Experience with CI/CD practices and modern DevOps principles
• Experience with microservice architectures, API design, and cloud security best practices
• Infrastructure as Code (Terraform, AWS CDK, or similar) with experience in one or more of the major cloud providers (AWS, GCP, or Azure)

AI

We use AI in a thoughtful and systematic way across all stages of our workflow (requirements refinement, task breakdown, code generation, code review, quality controls, bug resolution, maintenance and more). We expect you to work the same way.

Why choose us?

• Work alongside a supportive and forward‑thinking team dedicated to advancing the frontiers of healthcare
• Contribute to a company that is not only a leader in healthcare but also a pioneer in digital transformation
• Discover diverse career growth opportunities, whether through promotions, lateral moves, or international assignments
• Benefit from a comprehensive rewards package that acknowledges your contributions and enhances your impact
• Access a wide range of health and wellness benefits, including high‑quality healthcare, preventive programs, and at least 14 weeks of gender‑neutral parental leave

About Manufacturing & Supply (M&S)

At Sanofi, we’re committed to transforming the practice of medicine through breakthrough science. Within Sanofi, Manufacturing & Supply (M&S) is the bridge between Science and Patients, ensuring all patients get their dose reliably, that new medicines are launched faster to cover unmet needs and that they can be delivered affordably across the globe. At Sanofi we are convinced that Manufacturing is, and must in the future increasingly be, a competitive advantage and that digital unlocks every next step in that journey.

Imagine working in a vibrant startup environment, right in Lyon's bustling city center! We are an innovative global healthcare company with one purpose: to chase the miracles of science to improve people’s lives. Digital & Data are at the heart of Sanofi: our ambition is to be the leading digital healthcare platform to develop & deliver medicine faster, enable healthcare professionals to improve treatments, and help patients improve their health. Ready to get started?

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.

Equal opportunity statement

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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