**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 Backend Developer and you can help make it happen. Your job? Design and lead the development of scalable backend systems that power digital healthcare products across our platform. You’ll work closely with cross-functional teams to implement APIs, drive architecture, and apply modern DevOps and AI-driven development practices. 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, develop, and maintain enterprise-grade backend systems using Java Spring Boot (Java 17+), with code primarily generated using LLM tools such as GitHub Copilot + Architect and optimize Spring Gateway services to ensure secure, reliable, and scalable API management + Define and maintain modular system architecture with a focus on domain-driven design and service abstraction + Leverage existing libraries, frameworks, and open-source tools to accelerate development and avoid redundant efforts + Implement distributed backend systems with components such as Elasticsearch (for search/analytics), Redis (for caching), and PostgreSQL or similar RDBMS + Lead Kubernetes-based deployments using Helm, and optimize cloud-native runtime environments + Drive CI/CD workflows using GitHub Actions to automate build, test, and deployment pipelines + Define and manage Infrastructure as Code using Terraform or similar IaC tools to provision cloud resources + Collaborate with frontend, data, and DevOps teams to deliver integrated solutions across the product stack + Use C# or Python where needed to support platform integration and interoperability + Mentor junior developers and foster LLM-assisted coding practices across the team + Establish and enforce best practices in code quality, testing, and deployment standardization + Continuously evaluate and introduce emerging technologies to enhance our backend capabilities + Communicate effectively with global stakeholders in English, while working in a Chinese-speaking development environment You are a software engineer that wants to collaborate with teammates to implement a new feature and help improve our products. Add us to our existing services or roll out a new service to support this feature. Identify and help troubleshoot an issue affecting users in one of our many regions of the world. Participate in defining new product requirements and design together with the product team. About you: **Experience** : + 7+ years of backend development experience, with at least 3 years in a senior or lead capacity + Demonstrated expertise in generating high-quality code exclusively with LLM tools (e.g., GitHub Copilot, similar platforms) + Expertise in Java Spring Boot (Spring MVC, Spring Data, Spring Security) + Proven experience with Spring Gateway architecture and complex API design + Hands-on experience with Elasticsearch, Redis, and relational databases (PostgreSQL/MySQL) + Familiarity with NoSQL databases (e.g., MongoDB) and ORM frameworks (e.g., Hibernate) + Strong database design and optimization skills (query tuning, indexing, ACID compliance) + Proficiency with container orchestration using Kubernetes, Helm, and Docker + Experience with GitHub CI/CD pipelines and infrastructure provisioning via Terraform + Exposure to multi-language systems, with working knowledge of C# or Python + Solid understanding of testing frameworks such as JUnit, TestNG, or equivalent + undefined **Soft skills** :Strong “don’t reinvent the wheel” mentality; ability to reuse and integrate existing tools effectivelyAbility to work independently and as part of multiple teams inside a global engineering teamYou move fast, but thoughtfully and with a commitment to qualityHigh energy, confident, and ambitious individualMust be a passionate communicator, willing to challenge and enhance ideas while preserving relationshipsInterested in lots of aspects of technology, not just one techMust be as passionate as we are about chasing the miracle of science to improve people’s livesPersonal ownership of tasks and tenacious approach to finding and fixing the root cause of issuesExcellent written and verbal communication skillsService-oriented, flexible, positive team playerProblem 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:Backends: Java Spring Boot, RESTful APIs / GraphQLWe use components of cloud platformsFrontends: Vue.js with VantDatabases: PostgreSQL/MySQL, MongoDB, RedisCI/CD: GitHub Actions, Terraform, HelmYou don't have to be a specialist in everything but willing to learnundefined **Language Proficiency:** ·Fluent in English (spoken and written) for international collaboration·Comfortable in Chinese for daily work and team communication **Education** :MS in software engineering or computer science or equivalent **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 (https://www.youtube.com/watch?v=SkpDBZ-CJKw&t=67s) and check out our Diversity Equity and Inclusion actions at sanofi.com (https://www.sanofi.com/en/our-responsibility/equality-and-inclusiveness) ! Global Terms & Conditions and Data Privacy Statement (https://www.sanofi.com/en/careers/global-terms-and-conditions/) Sanofi is dedicated to supporting people through their health challenges. We are a global biopharmaceutical company focused on human health. We prevent illness with vaccines, provide innovative treatments to fight pain and ease suffering. We stand by the few who suffer from rare diseases and the millions with long-term chronic conditions. With more than 100,000 people in 100 countries, Sanofi is transforming scientific innovation into healthcare solutions around the globe. Discover more about us visiting www.sanofi.com or via our movie We are Sanofi (https://youtu.be/96EwNjb1TLo) As an organization, we change the practice of medicine; reinvent the way we work; and enable people to be their best versions in career and life. We are constantly moving and growing, making sure our people grow with us. Our working environment helps us build a dynamic and inclusive workplace operating on trust and respect and allows employees to live the life they want to live. All in for Diversity, Equity and Inclusion at Sanofi - YouTube (http://www.youtube.com/watch?v=SkpDBZ-CJKw&t=2s)