> Markdown version of [/jobs/ext/3138365-staff-software-engineer](https://www.wearedevelopers.com/jobs/ext/3138365-staff-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Staff Software Engineer - **Company:** Sanofi - **Location:** Spain - **Salary:** €69,200.0 - €103,800.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Automation of Tests, Microsoft Azure, C++ (Programming Language), Cloud Computing, Cyber Security, Continuous Integration, DevOps, Python (Programming Language), Node.Js, Object-Oriented Software Development, TypeScript, Datadog, ReactJS, Grafana, Backend, Infrastructure Automation Frameworks, Information Technology, Api Design, Microservices - **Published:** September 29, 2026 - **Apply:** https://startup.jobs/staff-software-engineer-2148-sanofi-aventis-de-colom-10194791 ## About the Role * 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), 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. ## Description * 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