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Alexandre GAG

Alexandre G

DevOps / SRE / Security Eng

€600/day
Montpellier, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Alexandre

Transversal DevOps profile with 15 years of experience, capable of taking a product end-to-end: infrastructure design and evolution, deployment, security, supervision, and daily operations (SaaS and on-prem). Comfortable with both platforms and application sides: containerization and application modernization, service integration (APIs, forms, mapping), and supporting teams to deliver faster with consistent reliability. Used to working on heterogeneous environments (Docker/Docker Swarm, Kubernetes, OVH/OpenStack, AWS/GCP) and various web hosting solutions.

Strong sensitivity to "product" topics: performance, availability, data protection, and compliance (GDPR), with concrete implementations (consent, retention, data self-service, security).

Additionally, experience in application development (web and mobile), including Android, and in essential email components for a clean service (deliverability, DNS, SPF/DKIM/DMARC), to offer complete, operable, and maintainable solutions.
  • French

    Native or bilingual

  • English

    Fluent

  • Portuguese

    Conversational

Remote only
Primarily works remotely

Experience

  • Entreprise de Biotechnologie
    Framer Integration of an interactive form and dynamic OSM map
    BIOTECH
    January 2026 - February 2026 (1 month)
    Montpellier, France

    Framer Integration of an interactive form and dynamic OSM map

    -----------------------------
    Form
    • City autocompletion via geo.api.gouv.fr (search, suggestions, normalization)
    • Automatic country detection for the phone field (format, code, validation)

    OSM Map (OpenStreetMap)
    • Automatic zoom / centering on the selected city
    • Animation and highlighting of the result (focus, transitions, states)
    Data and GDPR (full integration)
    • Explicit consent (clear opt-in, consent logging)
    • Transparency (readable information on usage, purpose, subcontractors)
    • Data minimization (strictly necessary collection)
    • Data security: full data encryption (in transit and at rest)
    • Limited retention period (3 years) with automatable purging
    • Reminder message / data deletion procedure
    • Self-service interface for:
    • -- Data deletion
    • -- Data modification
    • -- Full data download (export)
    • -- Compliant subcontractors: Europe only
    -----------------------------

    Technical Stack: Framer, Supabase, Vercel, Resend, Sentry, OpenStreetMap (OSM), geo.api.gouv.fr, e-mail (DNS, SPF, DKIM, DMARC)
    OpenStreetMap Framer Supabase Vercel Emailing
  • Entrepriseen de Biotechnologie
    Business application Dockerization Mission & Hosting
    BIOTECH
    January 2025 - Today (1 year and 5 months)
    Montpellier, France

    Mission: Containerization (Docker) of a business application & Hosting (On-Premises)

    -----------------------------

    • Transformation of a standalone application into a more modular Docker architecture (micro-services approach where relevant).
    • Application breakdown: identification of components, dependencies, and flows, then definition of services (app, web, jobs, storage, etc.).
    • PHP Containerization: image creation, environment management (dev/stage/prod), and configuration standardization.
    • Reverse proxy & routing with Traefik: service exposure, routing rules, TLS certificates, and endpoint security.
    • Mapping integration: setup of an OpenStreetMap (OSM) server / tiles, optimization of access and availability.
    • On-Premises Deployment: installation on client infrastructure, operating procedures (restart, logs, backups), and basic MCO (monitoring / runbook).
    -----------------------------

    Technical Stack: Docker, PHP, Traefik, OpenStreetMap (OSM), OSM Server
    Docker OpenStreetMap Traefik PHP OSM
  • Entreprise de sécurité réseau
    SRE / Infra Lead
    SOFTWARE PUBLISHING
    January 2024 - January 2026 (2 years)
    Paris, France

    Infrastructure & Security Lead (SRE)

    -----------------------------
    • Ownership of multi-tenant SaaS infrastructure: definition and application of security baselines, BCP/DR strategy, and lifecycle automation (IaC) with Ansible, Terraform, Terragrunt, Helm.
    • Management of GCP to AWS migration: landing zone design, observability setup (SLIs), CDN protection, and alignment with governance requirements.
    • Operation of OVH OpenStack and AWS tenants: HAProxy routing, firewall policies, on-call preparation, and transformation of operational feedback into coached backlogs (continuous improvement).
    -----------------------------
    Stack: Kubernetes, Helm, Terraform, Terragrunt, Ansible, HAProxy, OpenStack, AWS, GCP, Docker
    Kubernetes AWS Google Cloud Helm Security

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Education

  • Master CASAR ASR (Security and Networks)
    UM2 - Montpellier
    2008

Skill set

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