Hire the Best Penetration Testers

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Angu H.

Chennai, India

$35/hr
4.8
49 jobs

I am a Registered Penetration Tester & Ethical Hacker holding OSCP, CRTP, CEH, and CISSP certifications. I design custom tools and scripts for penetration testing and work extensively with Kali Linux. I perform comprehensive manual testing using Burp Suite, Metasploit, Nmap, SQLMap, Wireshark, and industry-standard frameworks. I safely develop, test, and modify exploits based on target environments. I currently work as a full-time security consultant specializing in penetration testing and vulnerability assessment across web applications, APIs, cloud infrastructure, and mobile platforms. I help organizations identify real, exploitable security risks through black-box, grey-box, and white-box testing methodologies. I have proven experience identifying critical and high-risk vulnerabilities across banking, telecom, insurance, government, SaaS, healthcare, and EdTech platforms. My work has led to multiple zero-day discoveries and CVE records in widely used products, including SHAREit, Upwork Time Tracker, and Avast Anti Virus. I bring 6+ years of hands-on experience as an information security professional. I have led and executed hundreds of penetration tests, VAPT engagements, red team operations, and security audits. My experience spans large enterprises with thousands of assets as well as startups seeking strong security foundations. I have deep expertise in assessing network security, cloud infrastructure (AWS, Azure), API security, web application security, and mobile application penetration testing (iOS and Android) across modern technology stacks. Core Competencies: • Web & Application Security: OWASP Top 10, authentication & authorization, access control, session management, business logic flaws, IDOR/BOLA, injection vulnerabilities • API Security: GraphQL, REST, OWASP API Top 10, OAuth/OIDC, SSO/SAML, token misuse, microservices • Cloud & Infrastructure: AWS (IAM privilege escalation, EC2/EKS, Lambda, S3, VPC, CloudTrail/GuardDuty), Azure, container/Kubernetes security • Specialized: AI/LLM security, mobile app security, thick client, admin panel security • Network: Internal AD testing, external penetration testing, lateral movement Working with me, you receive: ★ Actionable Deliverables: Detailed penetration test reports with executive summaries, risk severity classification (Critical/High/Medium/Low), CVSS scoring, proof of concept (PoC) with screenshots and logs, clear remediation recommendations, and impact analysis ★ Comprehensive Manual Testing: Complete hands-on security assessment (not automated scans) with immediate notification of high-impact exploitable issues ★ Customized Approach: Tailored testing for compliance needs (HECVAT, HIPAA, FERPA, Amazon SP-API,GDPR ,SOC2 ,ISO27001 ,PCIDSS), third-party security reviews, or proactive security hardening ★ Clear Communication: Developer-friendly reports and direct collaboration with engineering teams and non-security stakeholders ★ Timely Delivery: Comprehensive reports delivered on time without compromising quality ★ Unlimited Retesting: Vulnerability retest and fix validation included ★ Critical Bug Discovery: Proven ability to identify attack chains often missed by automated pentests My Track Record: ✅ Top-rated in information security and IT compliance ✅ Saved clients tens of thousands by identifying critical vulnerabilities before attackers ✅ Ranked Top 50 at multiple bug bounty programs ✅ Multiple CVE discoveries and responsible disclosures ✅ Professional certifications: OSCP, CISSP, CEH, CRTP ✅ Experience across SaaS, healthcare, EdTech, e-commerce, fintech, and enterprise ✅ Supporting all time zones for immediate-start and ongoing engagements Report Deliverables Include: ► Executive Summary & Attestation Letter (for compliance documentation) ► Assessment Methodology & Scope ► Risk Severity Classification with CVSS scores ► Detailed Findings: CVSS score, technical description, proof of exploitation (screenshots, request samples, logs), reproduction steps, impact analysis, and fix-ready remediation recommendations ► Retest Report: Multiple validation rounds included My Expertise: ★ Web Application Penetration Testing (OWASP Top 10) ★ API Security Testing (REST, GraphQL, OWASP API Top 10) ★ Cloud Security Assessment (AWS, Azure - IAM, containers, serverless) ★ Mobile Application Penetration Testing (iOS, Android) ★ AI/LLM Security Testing ★ Internal Active Directory and External Network Penetration Testing ★ Vulnerability Assessment and Penetration Testing (VAPT) ★ Backend API and Microservices Security ★ Thick Client Penetration Testing ★ Security Audits for SaaS, Healthcare, EdTech, E-commerce ★ Third-Party Security Reviews and Compliance Testing ★ Production Environment Security Assessment ★ OSINT Assessment Sound like a fit? 🟢 Press '...' button and then 'Send Message' button in the top right-hand corner

  • Penetration Testing
  • Information Security
  • Vulnerability Assessment
  • Security Analysis
  • Network Security
  • Application Security
  • API Testing
  • Mobile App Testing
  • Web App Penetration Testing
  • Red Team Assessment
  • OWASP
  • Ethical Hacking
  • Security Assessment & Testing
  • Cybersecurity Management
Oleksandr F.

Chernivtsi, Ukraine

$45/hr
5.0
19 jobs

⭐⭐⭐⭐⭐ Most penetration testers deliver automated scanner reports full of false positives. I deliver real, exploitable vulnerabilities with working Proof of Concepts (PoCs), business-focused risk analysis, and developer-friendly remediation guidance-the exact weaknesses an attacker would exploit in production. I'm a Cybersecurity Engineer, Penetration Tester, Cloud Security Engineer, and Ethical Hacker with 12+ years of hands-on experience helping organizations strengthen their security posture. I've completed projects for 663+ clients across 36 countries, delivered 900+ security assessments, identified 2,700+ vulnerabilities, and maintained an 80% repeat client rate by focusing on practical results instead of generic reports. Whether you need a Cybersecurity Engineer to strengthen your infrastructure, a Penetration Tester for compliance, a Cloud Security Engineer to secure AWS, Azure, or GCP, or an experienced Ethical Hacker to simulate real-world attacks, I deliver actionable results that reduce business risk. Why Clients Choose Me ✔ 12+ years of professional Cyber Security experience ✔ 663+ clients across 36 countries ✔ 900+ penetration testing engagements ✔ 2,700+ vulnerabilities identified ✔ 500+ Critical & High-risk findings ✔ 140+ Cloud Security assessments ✔ 75+ Incident Response investigations ✔ 80% repeat client rate As a Cybersecurity Expert, I've helped startups, enterprise organizations, healthcare providers, fintech companies, SaaS businesses, blockchain platforms, and eCommerce companies improve Cyber Security, strengthen Cloud Security, and prepare for SOC 2, HIPAA, ISO 27001, and PCI DSS. Core Services Web Application Penetration Testing As a Penetration Tester, I identify vulnerabilities automated scanners miss, including SQL Injection, XSS, SSRF, XXE, CSRF, RCE, IDOR, authentication and authorization flaws, business logic vulnerabilities, API weaknesses, and OWASP Top 10 risks. Every Penetration Tester engagement simulates realistic attacker behavior rather than simply generating automated scan results. Cloud Security As a Cloud Security Engineer, I secure AWS, Azure, and Google Cloud Platform environments through comprehensive Cloud Security assessments covering IAM, Kubernetes, Docker, cloud storage, VPC architecture, serverless security, DevSecOps, CI/CD pipelines, Infrastructure as Code, secrets management, logging, and monitoring. My Cloud Security reviews regularly uncover privilege escalation paths, exposed storage buckets, insecure IAM configurations, vulnerable Kubernetes deployments, and cloud misconfigurations before attackers exploit them. Infrastructure & Mobile Security Infrastructure penetration testing includes Windows, Linux, Active Directory, VPNs, wireless networks, privilege escalation, and lateral movement. Mobile security assessments cover Android, iOS, reverse engineering, static and dynamic analysis, API security, secure storage, certificate pinning, root detection, and jailbreak detection. As a Cybersecurity Engineer, I evaluate infrastructure from an attacker's perspective while providing practical remediation recommendations. Secure Code Review & Incident Response Manual code reviews, SAST, DAST, malware analysis, digital forensics, threat hunting, cloud forensics, and Incident Response. I frequently collaborate with Java Developer teams, DevOps engineers, architects, security teams, and every IT Project Manager responsible for secure delivery and reliable IT Service operations. What You Receive ✔ Executive Summary ✔ Technical Report ✔ Business Risk Assessment ✔ CVSS Prioritization ✔ Working Proof of Concepts ✔ Developer-Friendly Remediation ✔ Free Retesting ✔ Long-Term Security Recommendations Selected Results • Helped a FinTech startup secure $20M+ in funding before a SOC 2 assessment. • Identified multiple critical smart contract vulnerabilities before production. • Helped a healthcare SaaS platform prepare for HIPAA compliance. • Reduced remediation time by 40% through prioritized reporting. • Improved Cloud Security across enterprise AWS environments. Certifications OSCP • CEH (Certified Ethical Hacker) • OWASP • PTES • MITRE ATT&CK • NIST • CVSS My experience as a Certified Ethical Hacker, Cybersecurity Expert, Cybersecurity Engineer, Penetration Tester, and Cloud Security Engineer allows me to deliver security assessments that satisfy both technical teams and business stakeholders. If you're looking for a Cybersecurity Engineer, Penetration Tester, Cloud Security Engineer, Ethical Hacker, or Cybersecurity Expert, I'd be happy to help secure your applications, infrastructure, APIs, cloud environment, mobile apps, or blockchain platform before attackers find the vulnerabilities first.

  • Penetration Testing
  • Database Security
  • Security Testing
  • Source Code Scanning
  • System Security
  • Web Application Firewall
  • Web App Penetration Testing
  • Network Penetration Testing
  • Network Security
  • Cybersecurity Management
  • Cybersecurity Monitoring
  • Information Security
  • ISO 27001
  • Cloud Security
  • Website Security
  • Application Security
  • Vulnerability Assessment
  • Ethical Hacking
  • Mobile App Testing
  • API Testing
Muhammad S.

Karachi, Pakistan

$25/hr
5.0
88 jobs

🔐 Helping Startups & Enterprises Eliminate Critical Security Risks—Before Hackers Exploit Them I’m a Certified Penetration Tester with 7+ years of offensive security experience. I specialize in securing web apps, mobile apps, APIs, and cloud infrastructure to help you prevent breaches, stay compliant, and protect your users. 🧰 My Security Expertise: Web App Pentesting – OWASP Top 10, SQLi, XSS, CSRF, SSRF, logic flaws Mobile App Security – iOS/Android reverse engineering, insecure storage, API exposures API & Cloud Security – REST, SOAP, GraphQL; AWS/Azure/GCP misconfigurations Manual Testing & Reporting – Clear, developer-friendly bug reports (JIRA, Trello, Agile teams) 🏆 Success Stories: ⚠️ Identified 50+ critical vulnerabilities in a fintech app, preventing a $500K breach 🔒 Secured 100+ applications used by 500K+ users, reducing risk by 80% post-audit 📄 Delivered 100+ penetration testing reports with prioritized, actionable fixes 📜 Certifications: 🛡️ OSCP – Offensive Security Certified Professional 🕵️ CEH – Certified Ethical Hacker 🔐 CompTIA Security+ 💡 Why Clients Choose Me: ✅ Actionable Reporting – Prioritized issues + clear developer guidance ⚡ Fast Turnaround – Critical bugs reported within 24 hours 🛡️ Confidential & Compliant – Full NDA, encrypted communications, secure tool usage 🌍 Trusted by – YC-backed startups, Fortune 500s, global security firms 🚀 Ready to Secure Your App? Click “Invite to Job” and get: ✅ A free 15-min consultation ✅ A sample penetration testing report ✅ Critical issues reported in just 24 hours

  • Penetration Testing
  • Cloud Security
  • Vulnerability Assessment
  • Internet Security
  • Security Analysis
  • Security Engineering
  • Security Assessment & Testing
  • Information Security Audit
  • NIST Cybersecurity Framework
  • Web App Penetration Testing
  • Network Penetration Testing
  • Red Team Assessment
  • Cybersecurity Monitoring
  • Certified Information Systems Security Professional
  • Security Testing
  • AI Security
  • Security Policies & Procedures Documentation
  • Blockchain Security
  • Information Security Consultation
  • Information Security
Michael H.

Baltimore, Maryland

$125/hr
5.0
115 jobs

Stop relying on automated scans. I find the vulnerabilities they miss. I’m a senior penetration tester and vulnerability researcher with deep experience across enterprise networks, web apps / APIs and cloud platforms. Most testers just run automated tools and hand you a generic report. I simulate how an attacker actually thinks, perform thorough testing, and deliver professional, tailored reporting suitable not just for your own remediation efforts but also for audit / compliance. Benefits of manual testing: - Chaining multiple low/medium findings to show more significant impact - Breaking multi-tenant isolation - Bypassing auth controls (JWT, OAuth, misconfigurations) - Identifying cost-amplification / abuse vectors (e.g., billing attacks in serverless environments) - ZERO false positives (and wasted time trying to remediate non-issues) - REAL severity scoring (not just CVSS or ratings with no connection to actual impact/risk for your systems and data) What I Deliver - Manual, attacker-style testing (not just scans) - Clear, prioritized findings with real business impact - Proof-of-concept exploits where it matters - Practical remediation guidance your devs can use immediately - Optional retesting to verify fixes Common Engagements - SaaS / multi-tenant application security testing - API and authentication testing (JWT, OAuth, session flaws) - Cloud security reviews (GCP, AWS, Azure, O365) - DevOps security reviews (Gitlab/hub, BitBucket, etc.) - Pre-SOC2 / investor readiness assessments - High-intensity black-box pentests Why Clients Hire Me - I go beyond the scan—I find what others miss - I understand both offense and architecture - I communicate clearly with both engineers and leadership - I’ve worked on MANY real-world, high-impact systems I also help organizations: - Investigate breaches - Contain active threats - Recover compromised systems (Note: I do not assist with social media account recovery.)

  • Penetration Testing
  • Security Analysis
  • Security Engineering
  • Web Application Security
  • Ethical Hacking
  • Certified Information Systems Security Professional
  • Security Assessment & Testing
  • OWASP
  • White Box Testing
  • Network Security
  • Security Infrastructure
  • Vulnerability Assessment
  • Web App Penetration Testing
  • Network Penetration Testing
  • Incident Management
Rafay B.

London, United Kingdom

$100/hr
4.9
83 jobs

I am a globally acclaimed Cyber security consultant and Internet Security Specialist with a proven track record in security engineering and discovering Critical Zero Day Security Issues in a significant number of Web Applications, Products and Browsers which have helped protecting Privacy and Security of millions of users globally. My research on Cyber Security has been featured in BBC, Forbes, WSJ, Tech Crunch and many International media outlets. My mission is to fortify your digital defenses by harnessing the power of cutting-edge AI/ML technologies. I currently hold the following educational degrees and certifications: ✅ Masters in Cyber-Security and Forensics ✅ Certified Information Systems Security Professional (CISSP) ✅ Certified Information Security Auditor (CISA) ✅ Offensive Security Certified Professional (OSCP) ✅ CREST Practitioner Security Analyst (CPSA) ✅ Offensive Security Web Expert (OSWE) ✅Offensive Security Wireless Professional (OSWP) Security/Compliance Frameworks: ISO 27001, SOC2, PCI-DSS, HIPAA, NY DFS 23/ NYCRR Part 500, NIST, CIS, GDPR, HIPAA, FedRAMP, NIST 800-53, NIST 800-171, NIS2, DORA Services I Offer: Penetration Testing Vulnerability Assessment PCI-DSS SAQ Filing + ASV PCI compliance assessment Cloud Security (AWS, Azure and GCP) Red Teaming Assessment Threat Modelling Security Architecture Review Web 3.0 Wallet Security Smart Contract Audits Cloudflare WAF Protection DDOS Protection Expert Bot Protection Expert

  • Penetration Testing
  • Cybersecurity Management
  • NIST Cybersecurity Framework
  • Web App Penetration Testing
  • Web Application Audit
  • Cloud Security
  • ISO 27001
  • GDPR Compliance Review
  • PCI DSS
  • NIST SP 800-53
  • SOC 2
  • WordPress Security
  • Network Security
  • Firewall
  • Website Security
Ramesh M.

Ahmedabad, India

$30/hr
4.7
130 jobs

With 14+ years of experience, I help startups, SMBs, and enterprises transform ideas into scalable digital products and business solutions. As a Microsoft-focused technology partner, I have successfully delivered 1200+ projects for 720+ clients across 30+ countries, covering Microsoft Dynamics 365, custom software development, AI/ML, SaaS platforms, mobile applications, and blockchain-based solutions. As a Microsoft Partner, my team specializes in designing, developing, integrating, and modernizing business-critical applications using Microsoft technologies, modern web frameworks, cloud platforms, and emerging AI solutions. Microsoft Dynamics 365 & Power Platform • Dynamics 365 CRM, Sales, Customer Service, Business Central, Finance & Operations • Power Apps, Power Automate, Power BI, Power Pages • Microsoft Copilot Integration • CRM/ERP Migration, Integration & Automation Custom Software Development • ASP.NET, .NET Core, Angular, Node.js, React JS • Enterprise Web Applications • REST APIs & System Integrations • Cloud-Based Business Solutions Mobile App Development • iOS, Android, Flutter, React Native • Cross-Platform Mobile Apps • Enterprise & Consumer Applications • IoT-Enabled Mobile Solutions AI/ML Solutions • OpenAI & Azure OpenAI Integration • AI-Powered CRM & Copilot Solutions • Resume Parsing & Semantic Search • Predictive Analytics & Recommendation Engines SaaS Product Development • Multi-Tenant SaaS Platforms • Subscription-Based Applications • CRM, FinTech & Recruitment Solutions • Scalable Cloud Architectures Blockchain Solutions • Smart Contracts • NFT & Token-Based Platforms • Crypto Wallet Integration • Supply Chain Traceability Solutions Industries Worked With • Financial Services & FinTech • Banking & Insurance • Real Estate • Manufacturing • Transport & Logistics • Retail & eCommerce • Healthcare & Telehealth • Education & eLearning • Hospitality • Food & Beverage • Charity & Non-Profit • Government & Public Sector • Recruitment & Staffing • Agriculture & Livestock • Pet Care Industry • Entertainment & Media Unique Solutions Delivered Dynamics 365 & Enterprise Solutions • Microsoft Copilot implementation for Dynamics 365 CRM • Real-time inventory integration with Dynamics 365 F&O • Custom CRM for Microsoft License Reseller • Proposal Management System for Gulf Government Institution • CRM Portal for Car Race Organizer • Dynamics 365 Business Central implementations for Retail & Marketing companies • Field Service & Asset Tracking Platform AI-Powered Solutions • AI-driven Job Matching Platform using OpenAI Embeddings • Copilot-enhanced CRM systems • Predictive Sales Analytics • Knowledge Base Optimization Platforms Mobile & SaaS Products • Transportation System for Students with Special Needs • ERP Platform for Driver & Fleet Management • Community Service Mobile Platform • Dating & Social Networking Platform • Pet Training Application • Staffing & Young Talent Hiring Platform • IoT-based Smart Home Lighting & Spotify Integration App FinTech Platforms • Currency Exchange Platform • Policy Management System • Trading Advisory Portal Logistics & Transportation • Driver Management ERP • Shipping Management System • Specialized Student Transportation Platform • Fleet & Workforce Management Solutions Why Clients Hire Me ✅ Top Rated Plus Freelancer ✅ 100% Job Success Score ✅ 14+ Years of Experience ✅ Microsoft Partner Expertise ✅ 1200+ Successful Projects Delivered ✅ 720+ Global Clients Served ✅ Agile & Enterprise-Grade Development Practices ✅ Dedicated Long-Term Development Teams ✅ End-to-End Product Development from Idea to Launch Looking for a reliable technology partner for Dynamics 365, AI, SaaS, Mobile Apps, or Custom Software? Let's discuss your goals and explore how we can turn your vision into a scalable solution.

  • Node.js
  • Mobile App Development
  • Microsoft Dynamics CRM
  • Microsoft Power Automate
  • Angular
  • ASP.NET Core
  • Artificial Intelligence
  • Machine Learning Algorithm
  • Blockchain Development
  • Next.js
  • Flutter
  • React Native
  • SaaS Development
  • Mobile App
  • Web Application
  • Microsoft Power BI Development
  • Microsoft Dynamics ERP
  • Microsoft Dynamics Development
  • React
  • Cloud Application
  • Magento 2
  • Microsoft SharePoint Development
  • Microsoft Dynamics 365
  • Magento
  • SQL Server Integration Services

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How to Hire Top Penetration Testers

What is a penetration tester?

Penetration testing is the practice of performing a software attack on a computer system or network for the purpose of discovering weaknesses, exploits, and vulnerabilities. A penetration tester will help keep your security one step ahead of those looking for an easy way into your network.

How do you hire a penetration tester?

You can source penetration tester talent on Upwork by following these three steps:

  • Write a project description. You’ll want to determine your scope of work and the skills and requirements you are looking for in a penetration tester.
  • Post it on Upwork. Once you’ve written a project description, post it to Upwork. Simply follow the prompts to help you input the information you collected to scope out your project.
  • Shortlist and interview penetration testers. Once the proposals start coming in, create a shortlist of the professionals you want to interview. 

Of these three steps, your project description is where you will determine your scope of work and the specific type of penetration tester you need to complete your project. 

How much does it cost to hire a penetration tester?

Rates can vary due to many factors, including expertise and experience, location, and market conditions.

  • An experienced penetration tester may command higher fees but also work faster, have more-specialized areas of expertise, and deliver higher-quality work.
  • A contractor who is still in the process of building a client base may price their penetration tester services more competitively. 

Which one is right for you will depend on the specifics of your project. 

How do you write a penetration tester job post?

Your job post is your chance to describe your project scope, budget, and talent needs. Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a contractor to know if they’re the right fit for the project.

Job post title

Create a simple title that describes exactly what you’re looking for. The idea is to target the keywords that your ideal candidate is likely to type into a job search bar to find your project. Here are some sample penetration tester job post titles:

  • Need hackers to test our network security system
  • Penetration testers needed to help us find system vulnerabilities
  • Remote penetration testers wanted to recommend backdoor to new software

Project description

An effective penetration tester job post should include: 

  • Scope of work: From designing tests to conducting physical assessment of equipment, list all the deliverables you’ll need. 
  • Project length: Your job post should indicate whether this is a smaller or larger project. 
  • Background: If you prefer experience with certain industries, software, or environments, mention this here. 
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Penetration tester job responsibilities

Here are some examples of penetration tester job responsibilities:

  • Develop tests designed to break into security-protected applications and networks
  • Conduct physical assessments of entire network servers and systems 
  • Document key findings, write reports and deliver findings to executive team

Penetration testers job requirements and qualifications

Be sure to include any requirements and qualifications you’re looking for in a penetration tester. Here are some examples:

  • Masters degree in computer science or similar field required 
  • Minimum four years experience in security vulnerability testing
  • Extensive knowledge of two or more programming languages