Offensive Security Engineer & Software Quality Assurance Specialist

Helping organizations build secure, reliable, and resilient digital systems through offensive security assessments, penetration testing, software quality assurance, and security consulting.

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About Me
test environment
Welcome to My Vault.

I’m Promise Charles, an Offensive Security Engineer and Software Quality Assurance Specialist passionate about solving complex security challenges and building resilient digital systems. I enjoy approaching security from both an attacker’s and a quality engineer’s perspective, helping organizations create technology that is secure, reliable, and user-focused.

Cyber Security is an Art.

I believe cybersecurity is both a science and an art. Effective security requires continuous learning, analytical thinking, and practical problem-solving. Through professional experience at GTi Rides LTD, Hack The Box LTD (UK), Believe LLC (USA), and Flowmono Business Company (Nigeria), I have developed expertise in offensive security, penetration testing, vulnerability assessments, software quality assurance, and information security.

Certifications:
  • Ethical Hacking Essentials (EC-Council)
  • Hack The Box – Dante, Zephyr, and FullHouse ProLab Certifications
  • Certified in Cybersecurity (ISC2)
  • Introduction to Cyber Security (CISCO)
  • Cyber Threat Intelligence Analyst
  • Bug Bounty & Web Security Testing
  • Scrum and Agile Fundamentals Certified
  • Six Sigma Yellow Belt Professional
  • JPMorgan CHASE & Co Cybersecurity Job Simulation
Professional Highlights
  • Led development of GTi Rides mobile application and Website.
  • Product Manager & QA Tester.
  • Top 25 Hack The Box.
  • Top 50.
  • Top 100.
  • Security Researcher.
Technical Expertise

I leverage industry-standard tools, programming languages, and security frameworks to identify vulnerabilities, assess system resilience, and build secure, reliable digital solutions across web applications, networks, and enterprise environments.

Offensive Security Tools
  • Kali Linux
  • Burp Suite
  • OWASP ZAP
  • Nessus
  • Nmap
  • Wireshark
Security Frameworks
  • OWASP Top 10
  • MITRE ATT&CK
  • Cyber Kill Chain
  • OSSTMM
Python 82%
C 55%
Javascript 60%
Php 40%
HTML 70%
Bash Script 73%
Shell Script 73%
GitHub 68%
GitLab 22%
Core Expertise

Delivering offensive security, software quality assurance, and secure digital solutions that help organizations build resilient and trusted systems.

Professional Services

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Offensive Security

Identify and eliminate security weaknesses through penetration testing, vulnerability assessments, web application security testing, and security consulting.

Web Application Security

Secure modern web applications through comprehensive security assessments, OWASP-based testing, API security testing, and vulnerability validation to identify and remediate exploitable weaknesses before they impact your business.

Software Quality Assurance

Deliver reliable, secure, and high-performing software through comprehensive quality assurance, manual testing, usability validation, defect management, and functional testing, ensuring every product meets business objectives and user expectations.

Security Research

As a top-ranked ethical hacker, I specialize in exploit development, CTF challenges, and advanced adversary simulations. I also contribute to the cybersecurity community with research and technical write-ups.

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Digital Product Management

Lead secure, user-focused digital products from strategy to deployment by combining product management, software quality assurance, usability testing, and security best practices.

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Security Consulting

Helping organizations improve security through consulting, awareness training, risk assessments, and best practices.

Projects & Case Studies
Exploiting Network Services (FTP)
Checkout project
Exploiting Vulnerable Online CSE Bookstore
Checkout project
Solving The Hydra Lab on TryHackMe
Checkout project
Axlle Windows Machine
Checkout project
Decrypting Weak RSA
Checkout project

Emdee Five (MD5 Encryption)

Checkout project
Finding XSS In a Booking Page
Checkout project
Blockroom (Encrypted Server Message Block – SMB)
Checkout project
Skyfall – (S3 Bucket Exploitation – Minio)
Checkout project
Daily Bugle Joomla Project
Checkout project
eyes
Eyes Location Finder
Checkout project
Let's Connect

Whether you’re looking for offensive security expertise, software quality assurance, digital product guidance, or a collaboration opportunity, I’d be glad to hear from you. Let’s build secure and reliable digital solutions together.