Marcelo: Email & Phone Number

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Security Researcher - Offensive Security at HackerOne|United States

Position:

Security Researcher - Offensive Security at HackerOne

Location:

United States

View Marcelo's Email

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Last updated: 2026-05-30

Updated: 2026-05-30

Found email addresses for Marcelo:

Business emails:

.******o@hackerone.com

Personal emails:

c**************h@pm.me

Found phones for Marcelo:

+1-480-***-**19,

+1-909-***-**65,

+1-870-***-**29,

+1-623-***-**10

A different Marcelo?

Work Experience

Security Researcher - Offensive Security at HackerOne

Mar 2025 - Current

Self-Hosted Cloud & Network Security Infrastructure at Stealth Startup

Oct 2024 - Current

Capture the Flag - (CTF) Competitor at Hack The Box

Dec 2024 - Current

Cybersecurity Learner - HTB Academy at Hack The Box

Nov 2024 - Current

Open Source Contributor at Personal Projects

Oct 2024 - Current

Marcelo started working in 2024, then the employee has changed 3 companies and 4 jobs. On average, Marcelo works for one company for 1 year 8 months.

Marcelo is proficient in English and 日本語. Their professional focus is Amazon Web Services (AWS), Artificial Intelligence (AI), and Bash across 3 core areas.

Marcelo holds CompTIA A+ Certification, ITIL® 4 Foundation IT Management, and Linux Essentials Certificate certifications and has been awarded Phi Theta Kappa - Honors Society and Excellent Student Achievement

Education

Bachelor of Science at Western Governors University

Trade Education at Tri-Tech Skills Center

Frequently Asked Questions

What is Marcelo's email address?

SignalHire found verified email addresses for Marcelo, both business and personal. Their business email is .******o@hackerone.com, and personal emails include c**************h@pm.me.

What is Marcelo's phone number?

SignalHire found multiple verified phone numbers for Marcelo: +1-480-***-**19, +1-909-***-**65, and +1-870-***-**29.

How do I contact Marcelo at HackerOne?

You can reach Marcelo through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Marcelo's professional background?

They have held roles including Self-Hosted Cloud & Network Security Infrastructure, Capture the Flag - (CTF) Competitor, and Cybersecurity Learner - HTB Academy at companies such as Stealth Startup, Hack The Box, and Hack The Box. Their education includes Bachelor of Science from Western Governors University, and Trade Education from Tri-Tech Skills Center.

Is Marcelo's contact information up to date?

Yes. Marcelo's SignalHire profile was last updated on 30 May 2026, reflecting their current position as Security Researcher - Offensive Security at HackerOne in San Francisco, California, United States.

Marcelo Namesakes

Name

Company

Position

Marcelo

Self-employed

CEO

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Marcelo

VOA INTERNET

CEO

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Marcelo

Meu Congá

CEO

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