Technology & Software Engineering

Infrastructure · Automation · Software Engineering

Guillermo Adrián Molina

Senior Technology Consultant · Infrastructure & Platform Architecture

Tarragona, Spain · 30+ years in technology

Professional profile

Electronics Engineer and senior technology consultant working in IT since 1994. I combine infrastructure architecture and technical decision-making with hands-on implementation and operations across Linux platforms, containers, automation, identity and security. At BASE Gestió d’Ingressos, I serve as a technical reference for infrastructure solutions, working alongside systems, development and security teams.

My career spans enterprise UNIX environments and their evolution towards Red Hat Enterprise Linux, Red Hat Satellite and OpenShift, with a strong focus on reliability, security, maintainability and platform lifecycle management.

Professional experience

BASE Gestió d’Ingressos · Diputació de Tarragona

Jan 2011 – Present · Senior Technology Consultant / Infrastructure Technical Lead

  • Architecture and technical leadership: define and evolve infrastructure solutions, including availability, integration, security and maintainability decisions.
  • Platforms: manage and modernise corporate RHEL environments using Red Hat Satellite, alongside virtualisation, storage, networking and core infrastructure services.
  • Containers: design, deploy and operate Kubernetes and OpenShift/OKD platforms across development, integration, staging and production environments.
  • Automation and delivery: Ansible, Jenkins, Tekton, Bitbucket, Argo CD and Helm, using CI/CD and GitOps practices.
  • Identity and security: integration with Active Directory, Kerberos and SSO; platforms based on Keycloak and HashiCorp Vault; ongoing transition away from Solaris.

Essi Projects

Jun 2006 – Dec 2010 · Technology Lead

Technical leadership of projects and teams specialising in Sun/Oracle solutions. Architecture design, delivery coordination, consulting, presales and integration proposals spanning UNIX/Linux, networking, storage, clustering and virtualisation.

GFI España

Aug 2005 – May 2006 · Senior Technology Consultant

Designed, implemented and supported enterprise services built on Solaris, Apache/Tomcat and Oracle; Nagios monitoring and UNIX server administration.

Isofotón

Apr – Jul 2005 · Senior Technology Consultant

Sun Enterprise and Oracle platform administration, technical support and training in Solaris environments.

iNow Technologies / Numen Insight

Sep 2003 – Mar 2005 · Senior Presales and Integration Consultant

Solution design, technical proposals, demonstrations and presales for Sun/Oracle platforms; later consulting and systems integration across heterogeneous environments.

Itochu Techno Science Corporation

Mar 2000 – Aug 2003 · Presales Engineer

Enterprise solution architecture and proposals. Led the internal ERP project from functional requirements through design and implementation using Java, MySQL and Solaris.

World Wide Services

Oct 1997 – Feb 2000 · Managing Partner and Technology Consultant

Led consulting operations, delivered Solaris and heterogeneous systems services, and taught official Sun Microsystems training courses.

Cidicom / Sisteco · Sun Service Argentina

1994 – 1997 · Support Engineering

Deployment, support and performance tuning of Sun systems; started with a technical laboratory internship at Sisteco in 1993.

Core expertise

Architecture and platforms · RHEL, Linux, OpenShift, Kubernetes, VMware, networking, storage and high availability.

Automation and DevOps · Satellite, Ansible, CI/CD, Jenkins, Tekton, Argo CD, GitOps, Helm and Bitbucket.

Identity and security · Active Directory, Kerberos, Keycloak, Vault, service integration and access management.

Engineering and legacy systems · Java, Smalltalk, C/C++, shell, Solaris and enterprise UNIX.

Projects and publications

  • Protos: personal project designing and implementing a programming language on GraalVM/Truffle, focusing on runtime architecture, language semantics and performance.
  • Huemul Smalltalk: creator of a Smalltalk implementation; research paper published in Self-Sustaining Systems (pp. 54–73).
  • Firefox and open source: developed integrations with KDE KWallet and GNOME Keyring; participated in open-source communities.

Education and certifications

Electronics Engineer · Universidad Tecnológica Nacional, Buenos Aires, 2004.
Electronics Technician · Colegio República Francesa, Buenos Aires, 1993.

Certifications: Red Hat Certified Engineer (RHCE) and Oracle Certified Associate, Oracle Solaris 11 System Administrator.

Further training in advanced Linux and Solaris administration, clustering, networking, VMware, Oracle, Java/J2EE and ITIL.

Languages

Spanish: native · English: fluent (Cambridge First Certificate in English) · Catalan: level C.