Senior Software Platform Engineer - Accelerator (Lyon)

Sanofi Group; Lyon; Hybrid; EUR 64,000 - 85,000; Full time

Benefits offered by this job

Health insurance

Remote work up to 2 days/week

Public transport coverage 80%

Group savings plan

International mobility opportunities

Learning & development opportunities

Job summary

Sanofi is hiring an Accelerator Senior Software Platform Engineer in Lyon. The role focuses on building foundational platforms, supporting multiple teams and driving cloud-native tooling.

You will improve developer experience, create reusable deployments, and advocate for robust platform solutions in a highly collaborative, international environment. The position is hybrid (2 days remote, 3 days on-site) with strong emphasis on JavaScript/Node.js, IaC, and API-driven ecosystems.

Qualifications

• 6+ years of experience in platform/software engineering
• Bachelor's degree in CS/Engineering or equivalent is a plus
• Experience with Cloud Providers and IaC tooling
• Experience building libraries and developer tools
• Strong knowledge of APIs, networking, security and observability
• Fluent English required for an international team

Responsibilities

• Improve Developer Experience
• Reduce overhead for squads/pods
• Prototype and deploy standards and PoCs
• Support other teams as needed
• Build tools, libraries, and IaC for a large environment
• Create docs and recommendations for Cloud Native solutions
• Advocate for adopted solutions

Skills

JavaScript/Node.js

Infrastructure as Code

Cloud Providers

Libraries & Tools

APIs & Networking

English proficiency

Education

Bachelor's degree or equivalent in Computer Science or Engineering

Tools

Terraform

AWS CDK

Job description

Sanofi is hiring an Accelerator Senior Software Platform Engineer in Lyon. The role focuses on building foundational platforms, supporting multiple teams and driving cloud-native tooling.

You will improve developer experience, create reusable deployments, and advocate for robust platform solutions in a highly collaborative, international environment. The position is hybrid (2 days remote, 3 days on-site) with strong emphasis on JavaScript/Node.js, IaC, and API-driven ecosystems.