Application Security Expert

Project overview

As part of the IT Operations & Services activities, you will join the AppSec team within the Operational Security and Security Coordinators unit of the IT department. Your mission will focus on implementing and managing application security solutions, handling cybersecurity incidents, operational monitoring, and tracking the AppSec security posture.

Main missions:

Expected deliverables:

Occasional travel is expected to the group's main sites: Paris, Mons-en-Barœul, Chartres, and Esvres.

Profile sought

Proven experience in application security.

Complementary skills appreciated:

Work environment

• Contribute to the implementation and management of AST (Application Security Testing) solutions.
• Participate in handling confirmed cybersecurity incidents related to the AppSec scope.
• Participate in daily operational monitoring processes for application security.
• Contribute to awareness-raising actions on secure development best practices.
• Ensure reporting on AppSec security posture: indicators, vulnerability tracking, and committee participation.
• Documentation of technical activities.
• Contribution to the team's weekly reporting.
• Knowledge of secure development best practices.
• Knowledge and practice of AST tools: SCA, SAST, DAST, and RASP.
• Proficiency in Python development for the development and maintenance of security tools.
• Knowledge and practice of WAF solutions.
• Experience in conducting penetration tests.
• Familiarity with OWASP Web & API Top 10 attack techniques.

Nice to have

Paris – Boulevard Brune. Alternative locations: Esvres-sur-Indre (37) or Mons-en-Barœul (59).

Start date planned for December 2026, provisional end date December 2026, with the possibility of renewal.

Project details

• Start: 30/11/2026
• Duration: 3 mois renouvelable
• Remote: hybrid
• Location: Paris, Île-de-France, FR
• Rate: 88-94 EUR/h
• Languages: French