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Mariano BarreiroMB

Mariano Barreiro

Senior Systems Administrator

€510/day
Valencia, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mariano

What I offer?

More than 20 years leading IT projects in multinational environments, including highly demanding industries such as aerospace and fluid control. I don't sell promises: I deliver concrete results, aligned with business objectives and sustainable over time.
I work with companies that need to:

- Consolidate their technological infrastructure
- Migrate systems without losing control
- Optimize operations and reduce risks
- Integrate distributed technical teams
- Comply with standards and regulations frictionlessly
- Translate business needs into viable technical solutions

I am the profile you are looking for if you need someone who:

- Understands the technical terrain without losing strategic vision
- Doesn't get lost in bureaucracy or jargon
- Knows how to lead teams and suppliers with judgment
- Speaks clearly, acts quickly, and thinks long-term

I work from Valencia, but I collaborate with international teams. If your project requires real experience, technical leadership, and straightforward execution, I am ready to join.
  • Spanish

    Native or bilingual

  • English

    Fluent

  • Portuguese

    Conversational

Can work on-site
Valencia (up to 50km), Beniparrell (up to 100km)

Experience

  • Textron aviation - CESSNA
    Sr IT Specialist / Consultant
    AVIATION AND AEROSPACE
    February 2022 - Today (4 years and 3 months)
    Valencia, Spain
    - IT PoC for the Valencia Service Center
    - Detection of corporate IT needs.
    - Responsible for process generation
    - Responsible for New Employee Onboarding
    - Teamwork with General Management
    - Teamwork with the different IT areas of the company worldwide
    - Weekly remote meetings with the company's IT Director
    - Management of purchases and suppliers (ePO)
    - Implementation and development of projects


    Networking Purchasing IT Strategic Plan Microsoft Office Microsoft Office 365
  • KLINGER Argentina
    IT Specialist / Systems Administration
    January 2009 - October 2020 (11 years and 9 months)
    Buenos Aires, Argentina
    - Responsible for the IT area: reporting to Management and leading a technical team of 2 IT professionals.
    - Strategic Planning of the IT area, focusing on ensuring business continuity through the availability of IT services.
    - Cybersecurity: design and administration of the Cybersecurity Plan (Contingency and Disaster Recovery).
    - Other Plans: Improvement Plans applying all IT policies, compliance standards, best practices, and internal procedures.
    - Coordination of technical support and advice to the organization, resolving uncertainties and ensuring internal satisfaction.
    - Responsible for Technological Purchases and management of IT Partners and Suppliers. Market trend analysis.
    - Direction of all IT Projects to accelerate digitalization and cultural change in the organization.
    - Networks and Servers: key functions of definition, installation, configuration, monitoring, administration, and maintenance.

    Achievements: Strong drive for change management in the IT area, building almost from scratch all processes, infrastructures, networks, systems, and technologies to modernize the organization and introduce it into a strongly digitized culture, which brought efficiencies and savings.
    Featured Projects: Network Cabling Renovation | Corporate Wifi Implementation (UNFI) | Hardware Renovation | HP Server Implementation | NAS Storage System Implementation | HP 1910 Managed Switch Implementation with several subnet levels | Perimeter Security Implementation (Professional Firewall) and various Cybersecurity Systems for workstations and servers | IP Telephony Migration.


  • Urbegas SRL
    IT Consultant
    January 2006 - January 2009 (3 years)
    • Management of implementation and migration projects: Servers; CRMs; Security policies; Remote access.

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Education

  • Systems
    Universidad Tecnológica Nacional
    2000
    Sin Concluir

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