Software Engineer, DevEx

Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems across high-stakes industries like finance, manufacturing, defense, healthcare, and the public sector, co-creating customized AI systems that they can run on their terms. We are a dynamic, collaborative team passionate about AI and its potential to transform society. Our diverse workforce thrives in competitive environments and is committed to driving innovation.

Our teams are distributed between Europe, North America, Asia and the Middle East. We are creative, low-ego and team-spirited. Role Summary We are seeking experienced Software Engineer, Developer Experience to own and fostering a collaborative, automated, and efficient software development lifecycle. In this role, you will collaborate closely with product engineering teams to ensure consistent code health, accelerate development velocity through well-maintained CI pipelines, faster builds, and secure release processes.

Your mission: empowering our software engineering team with seamless workflows while securing our production environments. Location: Paris 🇫🇷 What you will do As a Software Engineer, Developer Experience, your responsibilities will include (but may not be limited to): Developer Experience

• Build, monitor, and enhance CI/CD pipelines to streamline development workflows and accelerate deployments.
• Design, operate and maintain scalable, reliable and secure multi-cloud infrastructures
• Identify areas for improvement and create innovative solutions that enable high developer velocity Team Collaboration & Advocacy
• Standardize DevOps practices to ensure consistency across all engineering teams.
• Establish measurable KPIs for security performance, reliability, and compliance adherence.
• Partner with development and operations teams to embed security into daily workflows.
• Lead training initiatives to upskill teams on secure coding, threat modeling, and incident response.
• Champion a security-first mindset, driving cultural adoption of DevSecOps principles across the organization. Representative projects - Improve CI/CD and build systems - Optimize cloud registries (Docker, Azure, GCP) - Implement static and dynamic code analysis tool - Implement automated vulnerability analysis

• 5+ years of successful experience in a similar role (DevOps, Developer Experience, Platform Engineer, Internal tooling engineer, SRE...)
• Strong proficiency in: - Scripting languages (Go, Python...) and software development best practices. - Developer experience engineering: developer workflow optimization, tooling and automation for productivity, real-time developer support and escalation paths - Site Reliability Engineering: CI/CD, containerization, orchestration, infra-as-code, monitoring, logging, alerting, observability...
• Exposure to: - Multi-cloud infrastructures (AWS / GCP / Azure or On-Prem) - Security Tools & Approaches: OWASP, SAST, DAST, SCA, vulnerability scanners
• Proven: - Problem-solving and communication skills — ability to contextualizing, gauging risks and getting buy-in for high stakes and impactful solutions. - Ownership, high agency and desire to improve things for others. - Autonomy, self-drive and ability to work well in a fast-paced startup environment. - Low ego and team spirit mindset.

We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance.

vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks. For the most up-to-date details on benefits available in your location, please refer to our Benefits page https://app.notion.com/p/mistralai/

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