Developer

About us

At Sanofi, we chase the miracles of science to improve people’s lives. All our decisions are taken with our most important stakeholder in mind – the patients.

Having a rich history of innovation that dates back over 100 years, Sanofi more than ever stays true to its commitment to transform the practice of medicine by providing potentially life-changing treatments and the protection of life-saving vaccines to millions of people. This history includes the first treatments for many rare diseases and the establishment of standards of care in diabetes and cardiovascular disease. Sanofi’s commitment to public health has helped protect hundreds of millions of people from influenza every year for decades and pushed polio to the brink of eradication, while its scientific vision has led to breakthrough innovations in the treatment of inflammatory diseases.

~ 43.07Bn€ Net Sales FY23

~90 countries

~ 91K employees

~ 59 manufacturing sites

~ 20 R&D sites

About the job:

At Sanofi, we’re committed to providing the next-gen healthcare that patients and customers need. It’s about harnessing data insights and leveraging AI responsibly to search deeper and solve problems sooner than ever before. Join our Digital team as a Senior Frontend Developer and you can help make it happen. Your job? You will play a critical role in designing and delivering scalable user interfaces across platforms — including web and WeChat Mini Programs — using technologies like Vue, Vant, Node.js, and NGINX, while leveraging AI coding tools such as GitHub Copilot.

We are an innovative global healthcare company with one purpose: to chase the miracles of science to improve people’s lives. Digital & Data is at the heart of Sanofi. Our ambition is to be the leading digital healthcare platform to develop and deliver medicine faster, enable healthcare professionals to improve treatments, and help patients improve their health. Ready to get started?

Main responsibilities:

• Design and deliver responsive frontend applications across web and mobile platforms, including WeChat Mini Programs, using modern UI frameworks like Vue and Vant.

• Implement reusable, well-structured UI components following architectural and UX standards

• Lead technical decision-making and mentor junior engineers in frontend technologies and best practices

• Collaborate with product, design, and backend teams to translate business needs into robust interfaces

• Integrate with backend services via RESTful APIs, including frontend-side performance optimization

• Leverage AI-assisted tools (e.g., GitHub Copilot) to accelerate development and maintain high-quality code

• Own and contribute to CI/CD pipelines using GitHub Actions, with a focus on test automation and deployment efficiency

• Work with NGINX and Node.js to configure frontend delivery environments

• Support localization and responsiveness across devices, ensuring accessibility and cross-platform consistency

• Participate in Agile processes: sprint planning, retrospectives, and continuous improvement sessions

• Stay informed on frontend, AI-assisted development, and Tencent Cloud-related innovations

• Communicate clearly with global teams in English, and work seamlessly with local Chinese stakeholders

As a senior engineer, you will take ownership of high-impact initiatives, lead frontend strategy discussions, and mentor junior engineers while collaborating across teams to deliver cohesive, scalable solutions.

About you:

Experience:

• 7+ years of professional frontend development experience

• Proven experience delivering WeChat Mini Programs, including WXML, WXSS, and mini program APIs

• Advanced knowledge of Vue.js, React, or Angular

• Strong ability to architect component libraries, micro frontends, and scalable design systems

• Experience building mobile-optimized interfaces using Vant, UniApp, or similar lightweight UI frameworks

• Proficient with JavaScript (ES6+), TypeScript, HTML5, CSS3, and build tools like Webpack, Vite

• Familiar with Node.js for frontend tooling, scripting, and integration tasks

• Hands-on experience with NGINX for web hosting, reverse proxying, and performance tuning

• Familiarity with state management libraries like Vuex, Redux

• Experience working with GitHub CI/CD pipelines

Soft skills:

• Strong “don’t reinvent the wheel” mentality; ability to reuse and integrate existing tools effectively

• Ability to work independently and as part of multiple teams inside a global engineering team

• You move fast, but thoughtfully and with a commitment to quality

• High energy, confident, and ambitious individual

• Must be a passionate communicator, willing to challenge and enhance ideas while preserving relationships

• Interested in lots of aspects of technology, not just one tech

• Must be as passionate as we are about chasing the miracle of science to improve people’s lives

• Personal ownership of tasks and tenacious approach to finding and fixing the root cause of issues

• Excellent written and verbal communication skills

• Service-oriented, flexible, positive team player

• Problem solving & critical thinking

Technical skills:

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.

Some of the key tech we use:

• Frameworks: Vue 3, React, WeChat Mini Program

• UI Libraries: Vant, Element Plus

• Languages: JavaScript, TypeScript, WXML, WXSS

• Build Tools: Vite, Webpack

• Testing: Jest, Cypress

• CI/CD: GitHub Actions

• DevOps & Server: Node.js, NGINX

• Cloud: Tencent Cloud, AWS

Language Proficiency:

• Fluent in English (spoken and written) for international collaboration

• Comfortable in Chinese for daily work and team communication

Education:

• Comfortable in Chinese for daily work and team communication