About MistralMistral 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.About MistralWe 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 SummaryWe are seeking hands‐on Pentesters to join our Offensive Security team. You will be running our maturing offensive solution on real client engagements while also hunting for vulnerabilities in Mistral's own systems and in the wild. This is a unique opportunity to break real client systems, discover 0-days for fun, and help build the AI that automates offensive security at scale.Your work will directly impact both our clients' security posture and Mistral's own defensive capabilities. You'll be at the forefront of our offensive security practice, with the chance to shape how AI transforms penetration testing. We welcome offensive security experts at all levels who are passionate about breaking systems and building the tools that make security testing more effective.What You Will DoClient EngagementsRun our offensive security solution on real client engagements: scoping, executing tooling,



and delivering resultsTriaging output and killing false positives to ensure high-quality, actionable findings for clientsAdvise clients through deployment and remediation, acting as a trusted security partnerTravel to client premises and switch between engagements in a classic pentest consulting cadenceInternal DogfoodingPentest Mistral's own systems, finding vulnerabilities before our offensive solution maturesHunt for vulnerabilities internally and on open-source/in-the-wild targets between client engagementsTransfer knowledge and findings to the forming internal security teamAct as Mistral's own first customer for our cyber harnessesGuiding the HarnessUse real offensive expertise to steer the cyber harness: identify vulnerabilities it should catchValidate and triage the harness's output, ensuring it meets the high standards of human pentestersBenchmark human vs. agent performance, helping to close the gap between automated and manual testingContribute to the development of AI-powered offensive security capabilitiesAbout YouCurrent P0 specialty: web / AppSec + source-code review; also high-value: internal / Active Directory, cloud (AWS/GCP/Azure),



CI/CD & supply chainSenior enough to run an engagement solo from scoping to deliveryUses AI in your workflow with a nuanced view of its capabilities and limitationsComfortable being client-facing, mobile, and switching between different engagementsProven track record of delivering high-quality penetration testing resultsStrong problem-solving abilities and attention to detail in vulnerability identificationIt would be ideal if you also have:Build your own offensive tooling (builder mindset that scales your impact)Published CVEs / GHSAs or a solid bug-bounty track recordConference talks, CTF achievements, or other public recognition in the security communityStrong code review skills for multiple programming languagesExperience with AI/ML systems and their unique security challengesContributions to open-source security tools or researchSome of our clients have French-speaking customers, so French proficiency is a strong plusWhat we offerWe offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits 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.Privacy PolicyYour privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy. #J-18808-Ljbffr

📌 Pentester, Offensive Forward Deployment Engineer - Montreal
🏢 Mistral
📍 Montreal