Gaëtan H.

Strategic Solutions Engineer @ GitHub | Agentic AI & DevSecOps for Enterprises

France

About

"I came here to have fun and hack the world! I've just finished to have fun." With 13+ years at the crossroads of cybersecurity, DevSecOps, and AI, I help enterprises adopt secure and scalable technologies that truly deliver business impact. I've led technical transformations for governments, Fortune 500s, and high-growth startups across finance, aerospace, telecom, and retail - from legacy modernization and hybrid cloud migration to AI-driven development and DevSecOps adoption. Spent the last 3 and a half years helping enterprise customers deploy and scale AI developer tooling, driving GitHub Copilot adoption across 30k+ seats in EMEA while translating real-world adoption blockers into product feedback around governance, metrics, billing, and agentic workflows. My approach combines deep technical expertise with pragmatic execution. I always keep security, scalability, and business impact in mind.

Experience

  • GitHub (Remote)
    • Strategic Solutions Engineer
      Sep 2025 - Present · 10 mos

    • Senior Solutions Engineer | Pre-Sales Engineer EMEA
      Nov 2022 - Sep 2025 · 2 yrs 11 mos

      I help high-profile prospects and existing customers successfully understand, evaluate, pilot, and leverage the GitHub platform. • Lead strategic technical engagements with enterprise accounts • Build custom solutions to address product gaps (OSS & private) • Drive Copilot and LLM adoption through prompt design and enablement • Deliver live demos and technical evaluations to C-level stakeholders • Align with sales, product, and support teams to grow adoption • Run workshops and training sessions for enterprise clients • Publish best practices for large-scale GitHub usage • Speak at conferences, participate in technical evangelism, and author thought leadership content • Mentor new SEs and contribute to onboarding content across EMEA • Advise product teams with structured field feedback

  • Cloud Consultant at Red Hat
    Sep 2019 - Oct 2022 · 3 yrs 2 mos

    I've worked with high-profile customers to help them innovate and transform their IT infrastructures & processes. My work mainly consisted into consulting and assisting innovation / engineering / production teams to design, build and automate complex cloud platforms. • Design, build and automate complex, large-scale hybrid cloud platforms; • Audit customers' infrastructure and provide remediation / guidance; • Engage with customers to drive the adoption of new technology and products. Technical environment (non-exhaustive): Openshift 3 & 4, OCS, Quay, Service Mesh, Ansible Automation Platform, RHSSO / Keycloak, RHEL / RHCOS Working environments: Banking industry, Telecom, Aerospace industry, Defence industry, Health

  • Independent Consultant - French Agriculture and Alimentation Ministry at pard0x
    Sep 2017 - Aug 2019 · 2 yrs

    I have assisted and helped the IT service of the French Alimentation & Agriculture Ministry in order to efficiently migrate business applications from VMware legacy environement to Openstack-powered cloud infrastructure (datacenter T3+ Oshimae). • Provisioned cloud tools and deployment pipeline for the new datacenter; • Standardized production deployment processes for cloud services; • Automated OpenShift deployment with HA, resiliency, and security; • Designed CI/CD pipelines with secure image promotion to production; • Secured secrets and hardened systems and networks against threats; • Integrated a dedicated PKI for OpenShift platform authentication; • Deployed monitoring and centralized log management systems; • Applied Agile/Scrum practices to coordinate project delivery; • Migrated 2000+ apps, 1000+ web servers, 650+ DBs across 4000+ VMs.

  • R&D Cloud Architect at ActiveEon
    Mar 2017 - Jul 2018 · 1 yr 5 mos

    My work at ActiveEon mostly focused on the design and the implementation of advanced cloud platforms powered by Kubernetes. These platforms have been built on the Azure infrastructure and are now used to run the ProActive Scheduling suite with fault-tolerance, data resiliency and high-availability. I also assisted the development team in various tasks including software bug fixing, feature implementation, system/service security hardening and IT park administration. • Design and implementation of an advanced, multi-tenant cloud platform on Azure using Kubernetes; • Implementation of fault-tolerant mechanisms, data redundancy and self-recovery for the platform; • Securing and segregation of the platform using namespaces & IAM policies; • Automation of HTTPS/TLS support for the web portals of the platform with the ACME protocol; • Developed resilient monitoring and logging subsystems for the platform administrators; • Contributed to the development of softwares through features integration and bugs fixing; • Provided security expertise for systems, cloud services and network administration.

  • Inria (2 yrs 5 mos)
    • PhD Candidate "Mobile security & cloud"
      Jan 2014 - Nov 2015 · 1 yr 11 mos

      My thesis work at Inria NGE was all about outsourcing mobile security in the cloud. I architected a cloud platform providing transparent security processing on mobile traffic using virtualized middleboxes (NFV). Those middleboxes were dynamically chained using Openflow (SDN) in such a way that a chosen security workflow would be executed on the traffic, depending on its class and the potential threats associated to it. I provided a mathematical approach to model the security chains and to efficiently split their deployment between in-cloud and on-device. Finally, I brought forward a methodology employing machine learning techniques to characterize the various kinds of mobile traffic and tailor their processing. Note: I left the program before completion. • Devised a cloud-based framework to perform in-path network security for mobile devices; • Designed and characterize complex security workflows for automating mobile traffic inspection; • Used Software-Defined Networking and Network Functions Virtualization to this end; • Provided a classification method leveraging machine learning to characterize mobile traffic; • Wrote and presented several scientific publications to international conferences.

    • Mobile Security Engineer
      Jul 2013 - Dec 2013 · 6 mos

      Following my end-of-course internship, I was hired by Inria NGE to develop Ovaldroid, a security framework leveraging the OVAL standard for Android devices security. Ovaldroid used the REST paradigm to make the mobile devices communicate with the various servers of the framework. Upon new OVAL definition arrival, each device would perform a configuration self-assessment and share the associated result for forensics purposes. • Developed Ovaldroid, a Java REST-based framework for Android security • Performed periodic and automatic configuration vulnerability assessments on Android devices • Used the OVAL standard (Mitre) to describe vulnerabilities and assess devices configuration