Freelancer profile translated to English.
Back to original languageAbout Sylvain
Welcome to my Malt profile!
I am passionate and experienced in system architecture, networks, and security. With a master's degree obtained in 2014, I have since acquired significant expertise within various companies, shaping my career in the IT world.
English
Conversational
French
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- ENGIE ITDevSecOps ConsultantJanuary 2023 - Today (3 years and 5 months)Context:Migration and isolation of pre-production/production for about thirty projects from a Mono-AZ K8s to a Multi-AZ.Responsibilities/Tasks:- Project analysis (manual DRP in case of outage),- Information gathering on project compliance,- Proposal to migrate to a multi-AZ K8s,- Taking charge of all projects with the agreement of the tech leads,- Isolation of pre-production/production on the same cluster.Technical Environment: Kubernetes, Azure DevOps-----Context:DevSecOps best practices.Responsibilities/Tasks:● List of DevSecOps improvement areas (image retention, Vault, private registry, root,etc.)● Use of a WAF behind front-end applications,● Use of a vault for sensitive data,● Analyze projects to better control our webApps (HPA/VPA/Limits/requests),● Upskill teams on K8s / CI / Vault / etc.,● Centralize common data (certificates / keys / registry / proxy / etc.)● Etc.Technical Environment: Kubernetes, DevSecOps, Grafana, Vault, Azure DevOps-----Context:TA: Support - Maintenance - proposal of various solutionsResponsibilities/Tasks:● Support (bug / memory leak / Downtime / etc.),● CI/CD Support● Application upgrades,● Proposal of Infrastructure as Code for part of our infrastructure,● Study of various solutions according to our needs,● Technological watch (CVE, patch, etc.),Technical Environment: Kubernetes, Helm Chart, Vault, Grafana, Azure DevOps
- Orange Business ServicesDevOps ConsultantJuly 2021 - December 2022 (1 year and 5 months)Project: CaascadURL: https://docs.caascad.com/fr/index.htmlSummary: Caascad is a platform for managing your infrastructure and applications. The architecture is based on K8s with the following tools: Keycloak / Vault / Concourse / Rancher / Quay|Harbor / Grafana / Git / etc.Assignments:- 70% Team Dashboard / Billing- 30% Team Apps Team Dashboard / Billing This is a team of developers who expose a webApp to visualize the status of their projects.My role:- Green IT,- Re-evaluate / design the [billing] architecture,- Design a DEV environment isolated from production [billing],- Redefine certain processes (e.g., Definition Of Done/Ready),- Redefine certain roles (e.g., tester / reviewer),- Upskill the team on K8s / CI / Vault / etc.,- Migrate the deployment process from Ansible to a Helm Chart,- Rework the CICD process- Study a new way of working within the team with the available tools- Fully automate the CI part (concourse) and then the CD (internal tool in cuelang)- Documentation,- Optimize container images,- Analyze the project to better control deployment (Request/limit / HPA / VPA / Multi/Single-zone / Quota / Etc.),- Support (bug / memory leak / downtime / Dockerfile / etc.), Team Apps Apps is a team that offers - maintains and configures Caascad tools such as Keycloak, Quay and/or Harbor, Concourse, Ownloud, Hedgedoc, etc. My role:- Strengthen the team,- Application upgrades,- Distribution migrations (Centos => Ubuntu),- Keep our Infrastructure as Code up to date (terraform / ansible),- Communication,- Study various solutions according to our needs,- Technological watch (CVE, patch, etc.),- Etc.#Jekyll #Concourse #Ansible #Terraform #AWS #FE #Gitlab #CICD #Helm #Keycloak #Grafana #Vault #Rancher #Quay #Harbor #K8s #Docker #Centos
- Société GénéraleDevOps ConsultantJune 2018 - June 2021 (3 years)Val-de-Marne, FranceAssignments:- 30% System Team- 70% InnovationPlatform System Team:- GreenIT- Technical support for Systems / Networks / Middleware- Proposal and implementation: Migration and optimization of some of our applications to a less expensive and more ecological offering within an internal architecture (Openstack / Openshift / VMWare).- Keep our tools up to date (Jenkins / Nexus / Jira / etc.)- Use of Terraform & Ansible to manage our applications (Infrastructure As Code & Middleware).- Proposal of various solutions for encountered problems.- Use of the "Autosys" schedulerInnovation Platform:AWS:- Proposal and follow-up of architecture implementation- Use of EKS with unmanaged nodes (management of VPC / Security group / LB / IAM / Route Table / etc.)- Automate the installation of "Traefik" in EKS to centralize http(s) traffic (https://docs.traefik.io/)- AWS Certified Solutions Architect Associate (In progress ...) Openshift:- Creation of a disconnected Centos image from scratch with Société Générale resources (certificates / Mirror / etc.)- Creation of templates- Creation of a POC of an existing application and support until production deployment.- Installation of Openshift 3.x on a POWER9 machine - ppc64le architecture in All In One mode to offer the possibility of using GPUs on a container (example: tensorflow)- Certified Openshift - Container Platform Administration I & II Keywords:#Centos #RHEL #Openshift #Docker #Kubernetes #AWS #EKS #Terraform #Ansible #Jenkins #Nexus #Automatisation #Partage #certifications #Autosys #Vault
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Education
- Master of ArchitectureETNA2015Master, Architecture système réseau et sécurité
- Professional License RSFS [Wireless and Security Network], Network ITIUT Vitry-sur-Seine2013Licence Professionnelle RSFS [Réseau sans Fil et Sécurité], Informatique réseau