Web Platform Full Stack Engineer
Barcelona, Spain Regular Posted on Mar. 26, 2026 Closing on Apr. 17, 2026Web Platform Full Stack Engineer
- Location: Barcelona
About Sanofi
We are an innovative global healthcare company, driven by one purpose: we chase the miracles of science to improve people’s lives. Our team, across some 100 countries, is dedicated to transforming the practice of medicine by working to turn the impossible into the possible. We provide potentially life-changing treatment options and life-saving vaccine protection to millions of people globally, while putting sustainability and social responsibility at the center of our ambitions.
Sanofi has recently embarked on a vast and ambitious digital transformation program. A cornerstone of this roadmap is accelerating our data transformation and the adoption of artificial intelligence (AI) and machine learning (ML) solutions to boost R&D, manufacturing, and commercial performance—bringing better drugs and vaccines to patients faster to improve health and save lives.
About the team
The Sanofi Global Web Team, responsible for end-to-end ownership over our website platforms that are serving at a large, global scale business needs for marketing organizations across Sanofi globally, is looking for top notch Full Stack Engineer for development in modern web standards such as React JS and Node JS who will be building with us Sanofi’s global web platform and capabilities.
The Full Stack Engineer would be integral part of our global web product team, powering our web solution to serve large scale of digital projects, high traffic, great web performance, stability, and cost optimization of our web platform. In this role you will play an essential role to the success of Sanofi strategic web solutions and our web presence. You will be a technical engineer but also orchestrator of multiple technical teams from various digital organizations, both Sanofi internal and our external partners.
About the job
Sanofi has recently embarked into a vast and ambitious digital transformation program. An important aspect of that transformation is how Sanofi engages with healthcare professionals via the web to engage
Main responsibilities
- Excellent software engineer that want to collaborate with teammates to implement a new feature and help improve our products
- Collaborates and supervises external web development team in building of key websites features, capabilities, and integrations with external solutions to ensure Sanofi standards
- Participate in defining new product requirements and design with Product Owner, Solution Architect and Web Developers daily
- Collaborates with wider Sanofi groups in architecting, planning, and executing the build of web components and integrations with 3rd party solutions
- Identify and help troubleshoot an issue affecting users in one of our many regions in the world
About you
- Expertise knowledge of React framework and it’s use with Node JS architecture
- Expertise knowledge of Node JS/Express working in a micro-service architecture
- Deep Technical understanding of modern web architectures and frameworks including responsive web design (CSS), mobile first and web accessibility topics
- Experience developing high performance, highly available & scalable applications and an in-depth understanding of observability
- Knowledge of and experience with high performance data stores
- In depth exposure to cloud platforms, preferably AWS
- Good knowledge of multi-sites web content management platform principles, preferably in Magnolia or other CMS based solutions preferred but not needed
- Practical understanding of software development principles and lifecycle, web development technologies / frameworks, APIs, and common web technologies essential to building seamless multi-channel experiences
- Servant Leadership mindset, facilitation, situational awareness, conflict resolution, continual improvement, empowerment, and increasing transparency
- Continuous learning mindset
- Efficient problem-solving attitude and approach paired with strong communication skills and sense of ownership
- Sense of urgency and ability to prioritize
- Efficient collaboration with large Digital ecosystem (from Infrastructure to Business)
Tech stack
We have a diverse stack and as long as you are willing to work with a microservices approach, we are open-minded about your technology preferences. You’ll have the ability to explore new technologies and strategies. Our current stack looks like this:
- Backends: GraphQL, Node.js, CMS/Magnolia and much of the AWS stack
- Frontends: React, JavaScript, Typescript
- Clouds: Mostly Amazon Web Services but also Microsoft Azure, GCP
#LI-Hybrid #BarcelonaHub #SanofiHubs
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.
You have not viewed any jobs yet.
You have not saved any jobs yet.
Developing
our talent
We believe better is out there – and that extends to how we support people. Our People Strategy prioritizes inclusivity, transparency, and efficiency in talent development. It’s allowed us to chart personalized plans to keep employees and managers on the same page when it comes to training and succession planning. From upskilling to mentorship, we prepare our teams with the resources they need to pursue progress.
Find out more about this location
Experience possibility
-
Our culture & values
We're the first in Pharma to have a DE&I board. We also have Employee Business Resource Groups that create spaces for every Sanofian to be heard. Your voice matters – use it to shape our future.
-
Why Sanofi
Get access to the tools, training, and support to reach your goals. By fulfilling your potential, you’ll help us achieve our aim of halving the time from discovery to therapy.
-
Build a career with purpose
Bring your passion to your role and impact millions of people around the world. You're in the driver's seat – just set your goals, and we'll provide the training and support that will get you there.
Join our
talent community
What could we achieve together? Every Sanofian works on projects that truly make a difference to people’s lives.
Sign up today and discover our latest opportunities as soon as they’re available.