Software Engineer, DevEx

Software Engineer, DevOps at Mistral AI

About Mistral AI

At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through high-performance, optimized, open-source and cutting-edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise needs, whether on‑premises or in cloud environments. Our offerings include le Chat, the AI assistant for life and work. 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 France, USA, UK, Germany and Singapore. We are creative, low‑ego and team‑spirited. Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on

Role Summary

We are seeking experienced DevSecOps Engineers 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: empowering our software engineering team with seamless workflows while securing our production environments.

Location

Paris, France or London, United Kingdom

What you will do

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

Full‑Lifecycle Security Ownership

• Oversee security from development and deployment to production monitoring
• Evaluate and map the existing security posture to identify gaps and improvement opportunities
• Enforce versioning for all artifacts: application code, infrastructure templates, security policies, and configurations
• Seamlessly integrate static (SAST), dynamic (DAST), and software composition analysis (SCA) tools with minimal latency
• Implement IaC with baked‑in security guards (e.g. Terraform with policy‑as‑code), manage Kubernetes RBAC, network policies, and pod security to enforce least‑privilege access
• Administer secrets and certificates via centralized tools (e.g., HashiCorp Vault, AWS Secrets Manager)
• Ensure alignment with regulatory and internal security frameworks (e.g., SOC 2, ISO 27001, CIS benchmarks)

Team Collaboration & Advocacy

• Standardize DevSecOps 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

About You

• 5+ years of successful experience in a similar role (DevOps, DevSecOps, Platform, SRE)
• Strong proficiency in scripting languages (Go, Python) and software development best practices
• Site reliability engineering: root cause analysis, in‑production troubleshooting, on‑call rotations
• Infrastructure operation and automation: CI/CD, containerization, orchestration, infra‑as‑code, monitoring, logging, alerting, observability
• Exposure to multi‑cloud infrastructures (and ideally on‑premise environments)
• Security tools & approaches: OWASP, SAST, DAST, SCA, vulnerability scanners
• Regulatory compliance and internal security frameworks (e.g., SOC 2, ISO 27001, CIS benchmarks)
• Proven problem‑solving and communication skills—ability to contextualize, gauge risks and get 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

Hiring Process

• Intro Call - 30 min
• Tech Culture Interview - 30 min
• Technical Rounds - 3 x 45 min
• Culture‑fit Discussion - 30 min
• Reference Calls

Location & Remote

This role is primarily based at one of our European offices (Paris, France and London, UK). We will prioritise candidates who reside there or are open to relocating. We strongly believe in the value of in‑person collaboration to foster strong relationships and seamless communication within our team. In certain specific situations, we will also consider remote candidates based in one of the countries listed in this job posting — currently France & UK. In that case, we ask all new hires to visit our local office for the first week of onboarding (accommodation and travelling covered) and then at least 3 days per month.

What we offer

• Competitive salary and equity
• Health insurance
• Transportation allowance
• Sport allowance
• Meal vouchers
• Private pension plan
• Generous parental leave policy
• Visa sponsorship

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analysing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgement. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.