Open to opportunities

Joshua Van Coller

@joshuavancoller

Penetration Tester at Orange Cyberdefense’s SensePost team, assessing web, API, network, mobile, cloud, and AI security.

South Africa

Message

What I'm looking for

I’m looking for opportunities to grow as an offensive security professional while deepening my cloud security expertise. I’m keen to join a team that values curiosity, continuous learning, and building security in from the ground up.

At Orange Cyberdefense’s SensePost team, I assess web applications and APIs, networks, mobile apps, cloud configurations, and AI systems. I also provide remediation guidance and retest to verify fixes.

My work spans the engagement lifecycle, from scoping and reconnaissance through reporting. I analyze vulnerabilities, including business logic, authentication, access-control, and Active Directory attack-path issues, and present findings to technical teams and executives.

I started in IT support at The IT Firm, where I developed hands-on experience with networking and enterprise Active Directory environments. I’m open to opportunities where I can grow in offensive security and deepen my cloud security expertise, with a long-term goal of moving into cloud security engineering or security architecture.

Experience

Work history, roles, and key accomplishments

Current

Security Analyst

Current

Orange Cyberdefense

Feb 2025 - Present (1 year 9 months)

Conducts penetration testing and cybersecurity consulting for local and international clients, covering the full engagement lifecycle from scoping and reconnaissance to reporting and retesting. Performs web, API, network, mobile, cloud, and AI security assessments.

Penetration Testing Web Application Testing API Testing Network Testing Active Directory Mobile Security Cloud Security AI Security Phishing Social Engineering Vulnerability Analysis Technical Reporting

IT Technician

The IT Firm

Oct 2022 - Jan 2025 (2 years 3 months)

Provided remote desktop and end-user technical support, configured and maintained hardware and software, and managed networks including VLANs, DNS, DHCP, and firewall rules. Administered Active Directory and supported Microsoft 365 and email systems.

Remote Support Hardware Software Networking VLAN DNS DHCP Firewalls Active Directory Microsoft 365 Exchange Web Design SSL Backup Troubleshooting Documentation User Training

Facilitator

Keybase Training Solutions

Jun 2021 - Jun 2022 (1 year)

Facilitated computer literacy courses nationwide, delivering over 500 hours of hands-on training to learners of all backgrounds. Built strong presentation and communication skills, translating technical concepts into plain language.

Training Presentation Skills Communication Skills Computer Literacy