Hire the Best Penetration Testers
in the United Kingdom

Born in 2003 with a rank of 70 in the 2022 national mathematics entrance exam, I have a strong passion for the world of security, especially in implementing security within cloud-native and DevOps-driven environments. Alongside my engineering background, I have extensive professional experience in penetration testing, red teaming, and bug bounty, identifying vulnerabilities across a wide range of systems—including large, well-known platforms such as Snapchat—while working with some of the best teams and organizations. I am highly proficient in Kubernetes and its ecosystem, with solid experience in designing, deploying, hardening, and operating production-grade clusters. I have worked extensively with GitLab CI/CD, Jenkins, and ArgoCD to build automated pipelines, supported by configuration management and orchestration using Ansible and AWX. In cloud and infrastructure, I have hands-on experience with AWS, GCP, Terraform, and observability stacks like Prometheus and Grafana. For access control and secrets management, I use Teleport, Vault, LDAP, and Passbolt to enable strong identity and access governance. I also work with centralized logging and monitoring platforms such as ELK/Elastic Stack, Splunk, Redash, and Sentry, alongside storage and data technologies like PostgreSQL, ScyllaDB, MinIO, Kafka, and JFrog Artifactory. I have also gone deep into building and operating SOC infrastructures, integrating SIEM platforms (ELK/Elastic, Splunk), endpoint and network detection tools, and threat-intelligence feeds. With a strong background in penetration testing and red teaming, I can accurately identify organizational threats end-to-end, perform targeted offensive testing myself, and validate those findings within the SOC layer to ensure comprehensive detection and response coverage. I actively work with SOAR platforms and automation playbooks, combining them with AI-driven threat detection to accelerate investigation, response, and remediation. This combination of offensive security experience, SOC engineering, and DevOps expertise enables me to secure complex Kubernetes and cloud environments while ensuring they remain scalable, observable, and resilient against modern threats.

That vulnerability your scanner flagged last? It already missed three others. Automated tools were built for speed, not depth. They catch surface-level issues and hand you a report full of findings that look thorough but leave the real risks untouched. Business logic flaws, broken access controls and chained API vulnerabilities are not things a scanner reasons though they require someone who thinks like an attacker and understands how applications are actually built. With 15 years of web application penetration testing experience and both OSCP and OSWE certifications, the vulnerabilities that matter most are exactly what gets found here. ✅ OSCP and OSWE certified with 15 years of hands-on web application penetration testing ✅ API security testing across REST, GraphQL, BOLA, JWT and OAuth attack surfaces ✅ Full OWASP Top 10 coverage using real working exploits, not recycled scan output ✅ Business logic flaws, auth bypasses and access control gaps that no scanner will catch ✅ SaaS, fintech and startup clients across the US, UK, Europe and Australia ✅ Virtual CISO support for SaaS, fintech and AI companies without a full-time security hire ✅ ISO 27001 implementation and ISMS structuring to pass audits and satisfy enterprise buyers ✅ Security questionnaires handled end-to-end so compliance never stalls a deal ✅ Audit-ready policies, procedures and control frameworks beyond checkbox compliance ✅ Hands-on GRC platform work across Vanta, Drata, Secureframe and Thoropass Certifications: ✅ Offensive Security Certified Professional (OSCP) ✅ Certified Ethical Hacker (CEH) ✅ eLearnSecurity Junior Penetration Tester (eJPT) ✅ GIAC Penetration Tester (GPEN) ✅ Offensive Security Web Expert (OSWE) ✅ GIAC Web Application Penetration Tester (GWAPT) ✅ Certified AppSec Practitioner (CAP) ✅ AWS Certified Security – Specialty ✅ Microsoft Certified: Azure Security Engineer Associate Here's the thing: most penetration testing engagements produce the same report. Same ten findings, same scanner, same template. That is not useful to a development team trying to fix real problems, and it is not useful to a business trying to understand real risk. The vulnerabilities that lead to actual breaches live inside application logic, API design and access control architecture. Finding them requires manual testing, genuine attack thinking and an understanding of where developers cut corners under deadline pressure. Web Application Penetration Testing Testing covers the full attack surface authentication, session management, input validation, business logic, access control and injection vulnerabilities mapped across the complete OWASP Top 10. Burp Suite Professional, OWASP ZAP, Nuclei, ffuf, SQLmap and XSStrike are used alongside deep manual testing to find chained vulnerabilities and logic flaws that no automated tool reaches on its own. Scope covers single-page applications in React, Angular and Vue, backend platforms including PHP, Node.js, Python, Java and .NET, and extends into microservices and cloud-native environments across AWS, Azure and GCP. API Security Testing Every REST and GraphQL endpoint gets tested for broken object-level authorisation, excessive data exposure, broken function-level authorisation, mass assignment, JWT vulnerabilities, OAuth misconfigurations and rate-limiting bypasses. Testing covers both technical weaknesses and business logic abuse, not just surface HTTP checks that any scanner can run. GraphQL engagements go further into introspection abuse, batching attacks, nested query exploitation and field-level authorisation gaps. Application Security Audit and Vulnerability Assessment Every audit combines manual penetration testing with SAST via Semgrep, SCA via Snyk and container scanning via Trivy to deliver a full picture of code-level, dependency and infrastructure risk. Findings are prioritised by real exploitability and business impact, not by CVSS score alone. Compliance-Aligned Testing Audit work maps directly to OWASP ASVS, SOC 2, GDPR and NIST CSF requirements — useful for SaaS companies approaching enterprise sales, startups preparing for investor due diligence and platforms handling regulated or sensitive user data. All findings are documented with detailed technical evidence, including proof-of-concept exploitation steps, affected endpoints, request/response analysis, and attack flow breakdowns where applicable. The reporting structure is designed to support engineering teams in reproducing and fixing issues efficiently, with clear mapping to OWASP Top 10 and relevant security controls. Each vulnerability includes prioritized remediation guidance, validation notes Send a message to discuss scope. A short conversation is all it takes to get started.

Hi, I’m Martin — a Principal Penetration Tester with over 13 years of hands-on experience (since 2011). I’ve delivered high-impact security assessments for clients ranging from innovative startups to global enterprises across the UK, Europe, East Asia, and the Middle East. My expertise spans the full spectrum of offensive security, including: • Web Application Penetration Testing • Mobile Application Penetration Testing • API Penetration Testing (REST, SOAP, GraphQL) • Thick Client & Desktop Application Testing • External & Internal Infrastructure Penetration Testing • Cloud Security Assessments (AWS, Azure, Office 365) • Red Team Operations & Simulated Phishing • Wireless Assessments, IoT Security, and Embedded Hardware • Server & Workstation Build Reviews • Mobile Device & MDM Testing • Network Device Security Reviews What sets me apart is my depth of experience combined with a relentless, methodical approach. As a Tigerscheme and CREST certified penetration tester, I stay at the forefront of evolving threats and techniques. I don’t just find vulnerabilities I provide clear, actionable insights that help organisations meaningfully strengthen their security posture. In addition to technical excellence, I’m a strong communicator who excels at translating complex findings into clear, business-relevant language. I work closely with clients to understand their unique risk landscape and deliver tailored testing programs that align with their objectives. I run a professional, focused penetration testing company and take great pride in the quality of our deliverables. All engagements include comprehensive, high-standard reports (example reports available upon request). I am also a Cyber Essentials and Cyber Essentials Plus Assessor and work with a recognised certification body. Top Rated on Upwork, I’m known for consistent quality, clear communication, and delivering real value. Whether you need infrastructure testing, web/mobile application assessments, API reviews, cloud configuration audits, or full Red Team exercises. I’m here to help you identify and mitigate risks before attackers do. Feel free to reach out, I would be happy to discuss how I can support your security needs.

I help founders and CTOs launch securely with confidence, guided by an industry-recognised expert in web, API & AI security. CREST & OffSec certified Web App & API Penetration Tester. 10+ years experience, 200+ tests, 300+ responsible disclosures. I help founders understand what actually puts their product and users at risk, without drowning them in technical noise. My approach goes far beyond a traditional penetration test - I give teams the clarity they need to deploy new applications, functionality and features to their customers without worrying about security. 🤝 Organizations I’ve helped secure: 𝐀𝐦𝐚𝐳𝐨𝐧 𝐀𝐖𝐒 𝐍𝐯𝐢𝐝𝐢𝐚 𝐓𝐢𝐝𝐞 𝐘𝐢𝐞𝐥𝐝𝐬𝐭𝐫𝐞𝐞𝐭 𝐒𝐭𝐫𝐢𝐩𝐞 𝐕𝐢𝐫𝐠𝐢𝐧 𝐌𝐞𝐝𝐢𝐚 𝐎𝟐 𝐃𝐫𝐨𝐩𝐳𝐨𝐧𝐞 𝐀𝐈 Services 🛡️ Web Application Penetration Testing Manual, attacker-mindset testing to uncover real-world vulnerabilities and logic flaws, including VAPT testing. 🔗 API Penetration Testing (REST & GraphQL) Auth flows, rate-limit bypass, schema misuse, injection paths, privilege escalation, and more. 🧪 SaaS Penetration Testing Testing focused on multi-tenant risks, permission abuse, data exposure, and tenant isolation issues. 📦 SaaS Product Security Assessment Comprehensive reviews for teams preparing for launch, onboarding customers, or SOC2 readiness. 🔎 OWASP Top 10 & SOC2-Aligned Web Application Security Reviews Industry-standard testing aligned with compliance and enterprise expectations. 🔍 Manual Vulnerability Discovery Deep human-led testing for IDOR, SSRF, XSS, BOLA, deserialization, logic flaws, and chained vulnerabilities. Deliverables 📝 Executive summary: High-level overview of findings, risk, and how to address them. 📄 Finding overview: Clear, reproducible details for developers (risk, impact, steps to reproduce). 🛠️ Remediation steps: Concrete, prioritized fixes your team can implement immediately. If you're preparing to launch and want a definitive understanding of your real-world security risks, let's talk.

Experienced and results-driven Penetration tester/Cybersecurity Engineer with over 8 years of industry expertise. Proficient in orchestrating and executing comprehensive solutions, specialising in web application, mobile application, and network penetration testing. OSCP certified (Offensive Security Certified Professional), demonstrating mastery in offensive security techniques and strategies to enhance your cybersecurity framework. Licenses & Certifications CREST Registered Tester (CREST CRT): ☑ Offensive Security Certified Professional (OSCP): ☑ EC-Council Certified Security Analyst: Penetration Testing (ECSA): ☑ Cisco Certified Network Associate Routing and Switching (CCNA): ☑ Cisco Certified Network Associate Security (CCNA): ☑ CompTIA A+: ☑ CompTIA Network+: ☑ Microsoft Certified Technology Specialist (MCTS): ☑ Palo Alto Certified Network Security Engineer (PCNSE): ☑ Experience Penetration Tester Falanx Cyber, Reading, England (November 2021 - Present) Performed manual penetration testing, both internally and externally Delivered various security penetration testing assessments to a variety of clients in different industries Performed formal and comprehensive application and infrastructure penetration testing assessments, following industry best practices Performed vulnerability assessments and provided findings with remediation actions Cyber Security Consultant Tata Consultancy Services, London, England (September 2020 - November 2021) Palo Alto Firewall Security projects Palo Alto Cortex XDR host firewall management Performed manual penetration testing, both internally and externally Conducted log analysis Delivered various security penetration testing assessments to a variety of clients in different industries Performed formal and comprehensive application and infrastructure penetration testing assessments, following industry best practices Performed vulnerability assessments and provided findings with remediation actions Endpoint device security implementation Responsible for creating network changes and liaising with the appropriate team for smooth delivery of the changes Responsible for evaluating & troubleshooting the current Firewall rules on Palo Alto Firewalls as per Server Team requirement Technical/Security Analyst The Coop, Manchester, United Kingdom (October 2015 - September 2020) Performed web application and network penetration tests Analyzed security test results, concluded from results, and developed targeted testing as deemed necessary Analysis of Wireshark output to identify suspicious traffics Performed physical security reviews of networks, servers, and other network devices Performed logical security control Knowledge of cloud-based environments (Azure) Performed penetration tests on computer systems, networks, and application Created new testing methods to identify vulnerabilities Responsible for day-to-day maintenance, Proactive and reactive support of Enterprise network Responsible for evaluating & troubleshoot the current Firewall rules on Cisco ASA, Check Point & Palo Alto Firewalls as per Server Team requirement Responsible for upgrading the networking and security device to the latest OS Responsible for creating network changes and liaising with the appropriate team for smooth delivery of the changes Responsible for day-to-day changes on the Cisco ASA, Check Point, and Palo Alto Firewalls in different Data Centers Creating, Troubleshooting Security policy / NAT on the Cisco ASA, Check Point and Palo Alto, Security Devices Provide aftercare for prepared/executed changes to get a desirable outcome Assist in change execution in maintenance window using the service now Tools Responsible for, installing, and supporting LANs, WANs, network segments, Internet, and intranet systems Monitor networks via Solar winds to ensure security and availability to specific networks node Determine network and system requirements Maintain the integrity of the network, server deployment, and security Ensure network connectivity throughout a company LAN/WAN infrastructure is on par with technical considerations Key Skills Penetration testing Vulnerability management Vulnerability assessment Network testing Active directory testing OWASP Top 10 API security Cloud security Incident response Risk assessment Compliance Security awareness training Threat modeling Security research Ethical hacking

🔐 Is your Azure or Microsoft 365 tenant secure or just configured? Many businesses only discover Conditional Access gaps, over-permissive roles, exposed service principals, weak MFA settings, or misused managed identities after an incident. I help you find and fix those risks before they affect your business, users, or data. I am a UK-educated Cloud Security Consultant specialising in Microsoft Azure, Entra ID, Microsoft 365 security, IAM, conditional access, RBAC, Microsoft Defender for Cloud, and cloud security hardening. 📌 My approach is attack-informed. I review your cloud environment the way an attacker would approach it, then turn those findings into clear, practical, prioritised remediation steps. You will not receive a generic checklist or raw tool output. You will receive security guidance your team can understand, implement, and maintain. ✅ What you will receive: - Azure and Microsoft 365 security findings - Risk-rated technical and business impact - Prioritised remediation roadmap - IAM, RBAC, Conditional Access, and identity security recommendations - Cloud hardening guidance aligned with MCSB, CIS Benchmarks, and MITRE ATT&CK for Cloud - Executive summary plus technical report for your team ☁️ Cloud security services: - Azure Security Assessment and Hardening - Microsoft 365 Tenant Security Review - Entra ID / Azure AD Configuration Review - Conditional Access Policy Audit and Design - IAM, RBAC, Service Principal, and Managed Identity Review - Microsoft Defender for Cloud Configuration Review - Microsoft Sentinel Readiness Review - Cloud Attack Path Analysis and Remediation - Cloud Security Posture Review - Zero Trust Guidance for Azure and Microsoft 365 - Cloud Incident Response Readiness Review 📜Certifications and background: - Certified Azure Red Team Professional, Altered Security - Certificate of Cloud Security Knowledge v5, Cloud Security Alliance - Microsoft Certified: Azure Fundamentals - Microsoft Azure Security Engineer - Junior Penetration Tester eJPTv2, INE Security - MSc Cyber Security and Digital Forensics, University of Westminster 🤝 Clients work with me because I combine cloud security knowledge with offensive security thinking. That means my recommendations are not just based on compliance requirements, but on the real paths attackers use to move through Azure and Microsoft 365 environments. ❗ If you are worried about cloud misconfigurations, Microsoft 365 security gaps, weak identity controls, or unclear Azure risks, send me a message. I will review your situation confidentially and recommend the most practical next step to keep your business and data secure.