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Andre S.
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Andre S.

Offensive Security | Senior Penetration Tester/Malware Removal

Getting hacked isn’t just a technical glitch—it threatens your business continuity, revenue, and customer trust. If you are looking for someone who genuinely understands how real-world attackers operate, how web systems actually get compromised, and exactly how to fix the root cause, you are in the right place.I am an Offensive Security Consultant and Red Team practitioner with a hands-on track record of 47 authorized penetration testing and retesting engagements across 15 different market verticals in the last year. My focus goes beyond running automated scanners; I dig deep into custom business logic flaws, broken access control (IDOR/BOLA), authentication weaknesses, and severe injection vectors (RCE, SQLi, XXE) across modern web applications, multi-tenant SaaS platforms, and REST/OAuth APIs. What truly sets my approach apart is my 10-year background working directly inside web hosting environments and Linux infrastructure. Having managed shared servers, VPS, and dedicated architectures, I have spent a decade on the front lines doing incident response: triaging active intrusions, identifying root causes, performing thorough malware cleanups, and hardening complex web stacks (with deep, battle-tested expertise in WordPress and CMS security). Because I understand infrastructure from the inside out, I know where defensive blind spots typically hide.When we work together, you get no generic automated scan dumps or theoretical fluff. You receive clear, human communication, step-by-step reproducible Proofs of Concept (PoCs), and practical, developer-ready remediation blueprints followed by retest validations. Whether you need a comprehensive pre-launch penetration test for your platform or urgent remediation and hardening for a compromised environment, let’s connect and secure your business. Best regards, Andre Olivato Red Team | Pentest | Web & Infrastructure Security

🇧🇷Florianopolis, Brazil$50/hr100% JSS4.94 (161)Since May 2019

Earnings and projects

MRR
$45

Last 6 months ÷ 6

World#152,946 / 412k
🇧🇷Country#1,800 / 4,647
Revenue, last 30 days
$0

Last 6 months: $267

Total earnings
$36k

Billed in all: $36k

World#97,512 / 412k
🇧🇷Country#993 / 4,647
Per project
$128

$53 in the last 6 months

World#292,076 / 412k
🇧🇷Country#3,134 / 4,647
Projects, last 6 months
5
60% fixed40% hourly
World#41,747 / 412k
🇧🇷Country#373 / 4,647
Projects in all
281

Across 310 contracts

80% fixed20% hourly
World#5,507 / 412k
🇧🇷Country#39 / 4,647

Earnings, last 30 days

$36.3kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$35.5k$36.0k$36.5k$37.0kOct 8Oct 23Nov 7

Dotted: longer than usual between two readings. Hatched: over two weeks without one.

Skill rankings: Top 26% in System Security

Ranked by MRR among everyone on Upwork with the skill.

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