Senior Offensive Security Engineer H

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Senior Offensive Security Engineer H in Others

Septeo
Full time
Email

Others
09/09/2026
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Valbonne, France

Responsibilities

Design offensive-security tools and agentic workflows, including architecture, scope, safeguards, and stop rules.
Operate workflows daily through scheduling, launching, monitoring, diagnosing agent drift, triaging false positives, and restoring service after incidents.
Prototype and measure new capabilities, then decide what to industrialize or discontinue.
Document design choices and the safeguards that were or were not implemented.
Report vulnerabilities to remediation teams in directly actionable terms.
Propose new security capabilities and help define part of the team’s roadmap.

Requirements

Experienced penetration tester with application and infrastructure testing experience.
Experience tracking vulnerabilities through remediation and distinguishing exploitable findings from scanner noise.
Ability to specify what should be built, direct coding agents, review their output, and assess its quality.
Practical experience orchestrating agentic workflows, monitoring them, diagnosing drift, and correcting them.
Strong Red Team mindset, curiosity, persistence, autonomy, and sound technical judgment.

Benefits

Personalized training and development opportunities, including internal mobility.
The opportunity to work in Septeo’s AI-first environment and explore new AI-enabled ways of working.
Company events and community activities, including afterworks, sports, CSR events, and seminars.
An inclusive workplace committed to equal opportunity, diversity, and inclusion.
Three-step recruitment process consisting of a recruiter call, a second interview, and a final meeting with the future manager.

Septeo

Septeo empowers businesses to unlock their full potential through innovative technology solutions that streamline operations, enhance customer engagement, and drive sustainable growth. By blending cutting‑edge software with expert consulting, we help organizations adapt to evolving markets and ac...

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