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Software Engineer, DevEx

Mistral AI
onsite senior full-time Paris
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First indexed 10 Mar 2026

Description

We are seeking an experienced Software Engineer, Developer Experience to own and foster 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 is to empower our software engineering team with seamless workflows while securing our production environments.

Responsibilities:

  • 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.

About you:

  • 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.

This listing is enriched and indexed by YubHub. To apply, use the employer's original posting: https://jobs.lever.co/mistral/c9e16eb0-0cb9-423d-8495-a96d10782622