> Markdown version of [/jobs/ext/4697513-software-development-engineer](https://www.wearedevelopers.com/jobs/ext/4697513-software-development-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).

---

# Software Development Engineer

- **Company:** Sanofi
- **Location:** Barcelona, Spain
- **Salary:** €49,600 - €74,400
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), Adobe InDesign, Application Programming Interfaces (APIs), Amazon Web Services, Microsoft Azure, C++ (Programming Language), Code Review, Continuous Integration, Software Design Documents, DevOps, Domain Name System (DNS), Monitoring of Systems, Python (Programming Language), Key Management, Networking Basics, Node.Js, NoSQL, E2e Testing, Oop Languages, SAP (Applications), Software Engineering, SQL Databases, TypeScript, Datadog, Policy as Code, Load Balancing, Grafana, Amazon Virtual Private Cloud (VPC), Kubernetes, Information Technology, Terraform, Devsecops, Docker, Static Application Security Testing, Vulnerability Analysis, Dynamic Application Security Testing
- **Published:** November 13, 2026
- **Apply:** https://sanofi.wd3.myworkdayjobs.com/en-US/SanofiCareers/details/Barcelona/Software-Development-Engineer_R2876939-1

## About the Role

* Experience: 5+ years building and operating production infrastructure, platform services, or DevOps systems, with increasing scope and independence; cross-functional team experience (B2B or regulated industries a plus)

 * Technical skills: JavaScript/TypeScript (Node.js) plus an OOP language (Java, Python, C++); Infrastructure as Code (Terraform); container orchestration (Kubernetes, Docker); hands-on cloud experience (AWS, GCP, or Azure); CI/CD pipeline engineering; observability and monitoring tools (DataDog, Grafana); SQL/NoSQL. Security tooling (SAST/DAST, secrets management), networking fundamentals (DNS, TLS/certificates, load balancing, CDN/WAF, VPC/connectivity), and SAP/Salesforce Commerce Cloud infrastructure experience are a plus.

 * Soft skills: Strong ownership mentality, pragmatic problem-solver, effective communicator who builds trust across teams, curious and growth-oriented

 * Education: Computer Science, Engineering, or equivalent practical experience

## Description

* Build and ship platform capabilities: Design and implement infrastructure-as-code, internal tooling, and shared services (Node.js, Java, Python) that product engineering teams build on - writing clean, well-tested, scalable code

 * Contribute to technical design: Author design documents, participate in design reviews, and propose trade-offs on architecture, security, and reliability with guidance from senior and staff engineers

 * Deliver quality through testing: Write unit, integration, and end-to-end tests; build and harden CI/CD pipelines and code review standards for the broader engineering organization

 * Strengthen DevSecOps practices: Embed security controls into the pipeline (vulnerability scanning, secrets management, policy-as-code), and develop secure, performant APIs and automation for infrastructure provisioning

 * Enable product teams to run on-call: Build the observability, alerting frameworks, runbooks, and self-service tooling (e.g., DataDog, Grafana) that product engineering teams use to monitor and operate their own services

 * Own platform reliability: Join on-call rotations for the platform and tooling layer itself, and drive root cause analysis and remediation for platform-level incidents

 * Grow yourself and others: Share knowledge through reviews, documentation, and demos; support junior engineers