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Joshua AguiarJA
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Joshua Aguiar

@joshuaaguiar

I defend industrial infrastructure and critical systems through OT cybersecurity, threat analysis, and incident response.

Brazil
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What I'm looking for

I'm looking to continue working in cybersecurity, particularly industrial and OT defense, where I can protect critical infrastructure, analyze threats, respond to incidents, and keep developing my technical skills.

I defend industrial environments and critical infrastructure through OT cybersecurity at TI Safe, administering NGFW firewalls and Claroty CTD/EMC solutions.

I analyze network traffic, correlate alerts, and proactively mitigate threats while supporting incident management across network and security infrastructure.

My background spans NOC data center operations, bilingual service desk support at Altice USA, and infrastructure support, including identity and access management, backups, networks, and user accounts.

I'm trained in Systems Analysis and Development and continue building my cybersecurity practice through certifications in industrial defense, SOC analysis, ransomware protection, phishing prevention, and critical infrastructure protection.

Experience

Work history, roles, and key accomplishments

TI Safe logoTS

Analista de segurança da informação

Nov 2024 - Jun 2026 (1 year 7 months)

Administração e otimização de firewalls NGFW;
Análise de tráfego, correlação de alertas e mitigação proativa de ameaças;
Suporte técnico e gestão de incidentes em infraestrutura de rede e segurança;
Administração de soluções de cibersegurança industrial (Claroty CTD/EMC) em ambientes OT.

Diebold Nixdorf logoDN

Técnico Service Desk

Aug 2024 - Nov 2024 (3 months)

Análise e resposta a incidentes relacionados a caixas eletrônicos e terminais de autoatendimento;
Atendimento de chamados de Suporte Técnico;
Documentação de processos e incidentes;
Atendimento e tratativas para gerentes bancários;
Análise de logs e sistemas de caixas eletrônicos ATMR;

Instituto das Cidades Inteligentes logoII

NOC (Network Operations Center) - Data Center

Mar 2024 - Aug 2024 (5 months)

Monitorar servidores e serviços, e em caso de alarmes, registrar incidentes e acionar os responsáveis;
Monitorar a segurança física do ambiente e acompanhar o acesso de pessoas no ambiente de Data Center;
Manter a ferramenta de controle dos equipamentos hospedados no Data Center;
Manter a gestão dos IP's;
Realizar ronda e checklist diário no Data Center;
Monitorar ar-condicionado, grupo gerador e

Mia San Mia foodstore logoMF

Administrador

Nov 2016 - Aug 2022 (5 years 9 months)

Gerenciamento de Loja;
Gerenciamento de Estoque;
Operação de Caixa;
Contratação de equipe.

Education

Degrees, certifications, and relevant coursework

EC

EU Cyber Academy Company

Certified Ransomware Protection Officer

Issued Jan 2026

CL

CyberWarFare Labs

Certified Cyber Security Analyst (C3SA)

Issued Feb 2025

CL

Claroty

Claroty Implementation Engineer - Healthcare

Issued May 2025 · Expires May 2027

XC

XM Cyber

Exposure Management Certification

PN

Palo Alto Networks

Sales Product Specialist - Software Firewall

GO

Google

Google Cybersecurity Certificate

Issued Feb 2025

AT

Acadi-TI - Academia Inovadora de TI

Network Defense Essentials - NDE

Issued Feb 2025

EN

Enap

Privacidade e Segurança da Informação

Issued Feb 2025

TN

TXOne Networks

TXOne Solutions Foundation

OP

OPSWAT

Introduction to Critical Infrastructure Protection

Issued Jan 2025

NN

Nozomi Networks

Nozomi Networks Certified Cyber Defenders

Issued May 2025

CA

Cybersecurity and Infrastructure Security Agency

Industrial Control Systems Deployments

Issued Dec 2024

UN

UniCesumar

Analise e Desenvolvimento de Sistemas, Tecnologia da Informação

2021 - 2024

CL

Claroty

Claroty Certified Associate (CCA) Industrial

IR

IriusRisk

Threat Modeling Foundations

HF

Hack & Fix

Certified Phishing Prevention Specialist

Issued Jan 2026

DI

DIO

Automação com N8N

Issued Dec 2025

SK

SkillFront

ISO/IEC 27001:2022 Information Security Associate

IS

ISC2

Certified in Cybersecurity

Issued Oct 2025

TS

TCM Security

Practical Security Fundamentals

IC

IBSEC - Brazilian Institute of Cybersecurity

Analista SOC

Issued Aug 2025 · Expires Aug 2028

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