Jérémy Chapeau

Co-Founder

San Francisco, California, United States9 yrs 1 mo experience

Highly StableAI Enabled

Key Highlights

Expert in both offensive and defensive cybersecurity.
Led development of large-scale security solutions.
Managed SOC operations and incident response.

Stackforce AI infers this person is a Cybersecurity Expert with extensive experience in SaaS and cloud security solutions.

Contact

Skills

Core Skills

CybersecurityCloud Security

Other Skills

Graph-based security platformIAM relationshipsCloud environmentsReal-time attack path analysisData ingestion pipelinesAgentic AI infrastructureAlgorithmsTool integrationsSecurity auditIncident managementSecurity policyProject managementAutomationCyber defenseIT security

About

Issu d'un parcours fortement marqué en cybersécurité, j'ai pu approcher à la fois l'aspect offensif (Red Team, Pentest) et défensif (SOC N3, développement de solution de cybersécurité).

Experience

9 yrs 1 mo

Total Experience

3 yrs 1 mo

Average Tenure

Current Experience

Subimage (yc w25)

Founding Engineer

Oct 2025 – Present · 7 mos · San Francisco, California, United States · On-site

Architected and built a graph-based security platform leveraging Cartography (CNCF) to model IAM relationships across AWS, GCP, Azure and Okta at scale (15M+ nodes, 65M edges)
Designed and maintained the graph ontology, enabling consistent modeling of identities, resources, and permissions across heterogeneous cloud environments
Developed a real-time attack path analysis algorithm based on predicate accumulation, allowing constant-time evaluation of privilege escalation paths independent of graph size
Built large-scale data ingestion pipelines and graph query systems to support low-latency access analysis on continuously updated datasets
Designed and implemented agentic AI infrastructure, including sandboxed execution environments, tool integrations, and feedback loop systems for iterative agent improvement
Core maintainer of Cartography (CNCF), contributing to framework architecture, scalability, and ecosystem adoption

Graph-based security platformIAM relationshipsCloud environmentsReal-time attack path analysisData ingestion pipelinesAgentic AI infrastructure+2

Collège numérique france 2030

Expert indépendant

Dec 2023 – Present · 2 yrs 5 mos

Resilience

Responsable Cybersécurité

Sep 2022 – Apr 2025 · 2 yrs 7 mos

CybersecuritySecurity auditIncident managementSecurity policy

Ct-square

2 roles

COO

Promoted

Jan 2022 – Sep 2022 · 8 mos · Rennes, Bretagne, France

Direction des opérations de l'entreprise :
pilotage du SOC
supervision des prestations d'audit, de Pentest et de réponse à incident

CybersecuritySecurity auditIncident management

Spécialiste en cyber-sécurité

Dec 2020 – Jan 2022 · 1 yr 1 mo · Rennes, Bretagne, France

Réalisation de mission de pentest (boîte noire et boîte grise).
Analyse SOC N3.
Chef de projet et développement sur la solution de SOC Managée de l'entreprise.
Chef de projet et développement d'une solution de diagnostic de cybersécurité automatisée.

CybersecuritySecurity auditIncident management

Ministère des armées

Red Team Leader

Jun 2017 – Dec 2020 · 3 yrs 6 mos · Région de Paris, France

Manager d'une équipe d'experts SSI (pentesters, développeurs ...) de dix personnes.
Spécialisé dans le pentest red team.
Suivi de projets de développements.

CybersecuritySecurity audit

Marine nationale

2 roles

Chef de service SIC - SNLE

Promoted

Aug 2015 – Aug 2017 · 2 yrs

Responsable du service informatique et Télécom (8 personnes) sur un SNLE (Sous Marin Nucléaire Lanceur d'Engins).
Gestion de parcs informatiques classifiés.
RSSI de la structure.
Mise en place de la PSSI et PCA/PRA après la modernisation des sytèmes.