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Guilherme da SIlva Freire

@guilhermedasilvafrei

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IT Support Specialist and Cybersecurity professional with global support experience.

Brazil

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What I'm looking for

I am seeking roles where I can apply infrastructure and cybersecurity expertise, work within ITIL-driven teams, and contribute to compliance and operational excellence in organizations that value training and continuous improvement.

I am an IT Support Specialist with over four years of experience in infrastructure management, hardware and software maintenance, network administration, and cybersecurity. I hold an EMBA in Cybersecurity and a Technologist degree in Blockchain and Digital Cryptography, and I have led Active Directory administration, ITIL-based incident response, and LGPD-compliant security policy implementation for public-sector clients.

I have experience in global technical support operations, field coordination, preventive and corrective maintenance, and corporate network and print server administration, and I deliver training and compliance monitoring. Bilingual in Portuguese and advanced English, I seek to apply my combined technical and regulatory knowledge to strengthen information security and operational resilience in a growth-oriented team.

Experience

Work history, roles, and key accomplishments

Current

Computer Technician

Current

Self-Employed

Jan 2008 - Present (17 years 11 months)

Provided computer maintenance and repair services to individual and corporate clients, handling hardware and software troubleshooting and installations to maintain operational readiness.

client support Installation Diagnostics

Technology Solutions Analyst

NewPC Tecnologia LTDA

Aug 2021 - Aug 2025 (4 years)

Provided technical support and infrastructure maintenance for AGEHAB/MS, administering Active Directory, implementing security policies, and monitoring file servers and corporate networks to ensure service continuity.

Papercut Active Directory PaperCut ITIL Security Policies

Computer Equipment Technician

Digix

Jan 2021 - Jul 2021 (6 months)

Delivered on-site preventive and corrective maintenance for AGEHAB/MS IT assets and provided corporate network support to maintain uptime and equipment reliability.

Maintenance Troubleshooting Network Support client support

UTS Tech Support Rep 2

Unisys

Dec 2017 - Sep 2020 (2 years 9 months)

Managed emergency incidents for global clients following ITIL/ISO standards, performed remote diagnostics, coordinated field teams, and ensured SLA compliance (2-8 hours).

Incident Management ITIL SLA Management Multilingual Support ISO

Education

Degrees, certifications, and relevant coursework

Faculdade Iguaçu

Executive Master of Business Administration, Cybersecurity

Grade: 100/100

EMBA in Cybersecurity completed in July 2025 with a 700-hour program and a thesis on data immutability and the right to be forgotten under LGPD (grade: 100/100).