Jean Burellier
Principal Software Engineer - Platform Team @Sanofi
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WORK HISTORY
Principal Software Engineer - Platform Team @Sanofi
Paris, FR
Drive platform engineering strategy across Sanofi’s Accelerator organization. Lead multiple platform teams and deliver secure, automated, and reusable infrastructure that enables hundreds of engineers to build, deploy, and scale with confidence.Scope & Leadership- Lead 4 platform teams (APIs, Core, Elements, Backstage), directly managing 3- Define technical direction, architecture, and engineering standards- Act as Security & Compliance Champion (GxP, SOC2, HIPAA)- Bar raiser for senior/staff-level hiring, shaping Sanofi’s engineering cultureInfrastructure & Enablement- Designed and maintain the infrastructure backbone for 20+ AWS accounts, with fully dynamic, automated provisioning to support scalable multi-team growth- Built reusable components used org-wide including:* Daily-built Docker base images with enforced security and immutability * CDKTF modules and advanced constructs with secure, compliant defaults- Delivered self-service deployment pipelines for frontend (S3 + CloudFront) and backend (Lambda) apps * Pipelines are triggered thousands of times weekly, offering Vercel-like workflows with built-in security and consistencyEngineering Governance- Authored 300+ engineering controls covering code quality, security, architecture, and cloud operations- Embedded controls directly into CI/CD workflows for real-time, automated compliance with zero friction- Led the transformation of Sanofi’s GxP release process from quarterly manual qualification to on-demand, fully automated, audit-ready GxP releasesCross-Org Impact- Provide technical guidance to 200+ engineers, enabling secure, standardized delivery across hundreds more- Drive adoption of secure-by-default practices through automation, documentation, and mentorship- Act as a strategic partner to engineering, security, compliance, and business leaders, ensuring platform initiatives align with company goals
EDUCATION
SUPINFO
Master's degree, Computer Science
SKILLS
ABOUT JEAN BURELLIER
I\'m a Principal Software Engineer with over a decade of experience designing, building, and scaling platforms, APIs, and developer tools that power secure, high-impact systems in regulated environments.Since 2012, I’ve worked across the full stack—as a developer, architect, and engineering leader—delivering solutions that emphasize automation, compliance, and long-term maintainability. I specialize in platform engineering, cloud-native architecture (primarily AWS), and secure-by-default infrastructure used by hundreds of developers. I’m particularly passionate about building internal products that reduce friction, improve delivery speed, and elevate engineering quality across organizations.I\'ve led the creation of deployment platforms, reusable infrastructure modules, and shared APIs used thousands of times per week. My work has enabled teams to move from quarterly release cycles to fully automated, on-demand deployments - GxP-qualified and audit-ready. I’ve authored hundreds of engineering controls now embedded directly in CI/CD pipelines, supporting scalable DevSecOps without compromising velocity.Outside of core engineering, I’m active in the tech community as a conference speaker and open source contributor, including contributions to Node.js and Express.js. I enjoy making complex infrastructure and security topics approachable, whether through internal mentorship, meetups, or speaking on stage.Known for being pragmatic, delivery-focused, and collaborative, I work closely with engineers, architects, legal, compliance, and C-level stakeholders to align technology with business outcomes.
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