public/README.md

# public CV

Francisco Javier Puig Díaz | IT Infrastructure & DevSecOps Support Engineer

Reading U.K. | Sevilla Spain | fluent in English, German, Spanish and Italian

🖥 www.linkedin.com/in/javierpuigdiaz ✉ javier.puig.diaz@gmail.com ☎ 0790 208 4887

Professional Summary 

IT Solutions Architect and Systems Integration / Support Engineer with over 25 years of EMEA experience. Specialises in modernising legacy workflows, infrastructure provisioning, and deploying highly available, secure environments. Expertise in design and support of multi-node pve datacentre virtualisation, Kubernetes, Docker, and DevSecOps collaboration to scale, automate, and secure enterprise-wide operations.

Key Skills & Expertise

    • Virtualisation & Containers: Proxmox VE (Clustered Datacenters), Kubernetes, Docker, LXC, VM Operations.
    • Infrastructure & Automation: CI/CD Pipeline Support, Declarative Environment Provisioning, Python, JavaScript, Shell Scripting and adherence to git principles.
    • Networking & Security: WireGuard & Tailscale VPNs, Server Hardening, VLANs, Site-to-Site Architecture, Enterprise Switching/Routing.
    • IT Operations: Datacenter Clustering, Legacy-to-Modern Migrations, Local AI Model Deployment, Multilingual Enterprise Support.

Professional Experience

BOOKS etc. Ltd. E-Commerce & Supply Chain Logistics Sector | 2025 – Present

Senior IT Infrastructure & Operations Automation Engineer & DevSecOps Support

    • Engineered and maintained resilient IT operations, modernising legacy supply chain structures into streamlined, automated deployment pipelines.
    • Designed and managed multi-node Proxmox Virtualisation Environments (PVE), optimising compute/storage allocation and partnering with software development teams to accelerate application provisioning.
    • Deployed secure, hard-isolated remote access architectures, implementing site-to-site bastion-servers / VPN solutions to safely bridge distributed network landscapes.
    • Developed custom integration and automation scripts using Python and JavaScript, reducing operational friction and minimising manual deployment errors.
    • Managed physical and digital deployments of warehouse technology, including hardware prototyping and engineering proof-of-concept setups.

SAP UK Ltd. | 2010 – 2023

Senior Support Engineer (EMEA)

    • Specialised in SAP BI & SAC deployments, resolving complex technical issues for medium-to-large enterprise clients across the EMEA region.
    • Administered RedHat Linux environments and supported early-stage Docker and Kubernetes cloud integrations.
    • Collaborated on enterprise DevOps initiatives
    • Facilitated comprehensive technical training sessions to elevate team capabilities.

HP UK Ltd. | 2009 – 2010

Network Support Engineer

    • Resolved complex networking incidents involving VLANs, APs, and wireless security protocols for EMEA clients across 3Com/HP products, improving first-call resolution rates and reducing escalations.

Self-Directed Technical Research & Lab Deployment | 2023 – 2025

Independent Professional Development & Sabbatical

    • Engineered local, self-hosted AI models and orchestrated automated LLM implementations within private lab infrastructure.
    • Designed and deployed secure, multi-node Proxmox VE clusters, containerised micro-services (Docker, LXC), and complex systemd automation tasks.
    • Constructed declarative environment provisions and orchestrated API integrations to modernise legacy tech stacks.

Early Career Highlights | 1996 – 2009

Various Organisations (ECAP Zentralschweiz AG/GmbH, Dipl. Ing. Fust AG/GmbH, Siruela y Toscano S.L., Corel UK Ltd. and 3Com UK Ltd.)

    • Held progressive technical roles including Store Manager, Technical Support Specialist, and IT Teacher.
    • Directed end-to-end IT support and store operations, increasing service revenue through efficient PC builds and maintenance.
    • Managed Windows/Linux server environments (Active Directory, LDAP, CA, DNS, DHCP, XAMPP...) and delivered multilingual software and hardware troubleshooting.

Education & Certifications

    • BTEC HND: Computer Systems Engineering (FPII) I.E.S. Gonzalo Nazareno Dos Hermanas (Sevilla), Spain 2005
    • Goethe-Zertifikat C2: Großes Deutsches Sprachdiplom (GDS) Dolmetscherschule Zürich, Switzerland 1999
    • H3C 3Com Network Support Engineer (Hardware) 3Com/HP UK Ltd. Hemel Hampstead, U.K. 2009
    • Senior Product Support Engineer (Software) SAP UK Ltd. Maidenhead, U.K. 2018