Mekahal Chamese elddine

Full-stack Developer

Offensive Security Practitioner & Penetration Tester holding the HTB Certified Penetration Testing Specialist (CPTS), ISC2 CC, and CCNA. Backed by a strong background in full-stack engineering, active participation in Hack The Box CTFs, and independent vulnerability research on platforms like HackerOne and Bugcrowd, I leverage a developer’s perspective to identify complex business logic flaws, conduct thorough web/network penetration tests, and execute advanced exploitation techniques. Skilled in manual code review, reconnaissance, and delivering actionable remediation guidance across the entire technology stack.

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Skills
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Certifications
Work Experience
Cybersecurity Researcher (Independent)
Jan 2025 — PresentCurrent
  • Conduct deep-dive vulnerability assessments for Mercedes-Benz Private Security Program
  • Perform security research on OpenAI (ChatGPT) and Temu, identifying XSS and CORS vulnerabilities
  • Employ reconnaissance, manual code review, and business logic flaw identification in enterprise environments
Full-stack Developer
Soins et Santé Groupe
Nov 2024 — PresentCurrentLyon, Auvergne-Rhane-Alpes, France
  • Build and maintain application's core logic using ASP.NET Core including Database Schemas and Service Layer
  • Develop Controllers and RESTful APIs for seamless server-frontend communication
  • Manage data migrations and optimize databases with Entity Framework Core (EF Core)
  • Own and develop dynamic, responsive frontend using React and TypeScript
  • Manage application state and integrate React frontend with ASP.NET APIs
  • Collaborate in remote team using Git for version control and full development lifecycle
Skills
ASP.NET CoreNode.jsReactCertified in Cybersecurity (CC)Certified Penetration Testing Specialist (CPTS)networking (CCNA)Database SchemasEntitiesService LayerControllersRESTful APIsEntity Framework Core (EF Core)TypeScriptState ManagementGitreconnaissancemanual code reviewbusiness logic flawsActive Directory Penetration TestingAttacking CMSAttacking Common ServicesAttacking Windows & LinuxAuthentication & Authorization AttacksBlind SQL InjectionBypassing File Upload RestrictionsCommand InjectionCross-Site ScriptingEnumerationFile InclusionIDORInformation GatheringLateral MovementLinux Privilege EscalationPenetration TestingPivotingPost-exploitation EnumerationVulnerability AssessmentWeb FuzzingWeb Proxy UsageWindows Privilege EscalationXML External Entity Injection
Education
Bachelor of Science, Computer Science
Université Amar Telidji de Laghouat
Jan 2020 — Sep 2023
Certifications
Certified Penetration Testing Specialist (CPTS)
Hack The Box
Jul 2026
View credential
Certified in Cybersecurity (CC)
ISC2
Mar 2024
View credential
CCNA: Enterprise Networking, Security, and Automation
Cisco
Jan 2025
View credential
CCNA: Introduction to Networks
Cisco
Jan 2025
View credential
CCNA: Switching, Routing, and Wireless Essentials
Cisco
Jan 2025
View credential