Web & API Security Pentester | AD & Network Expert

Pauwels Consulting; Brussel; On-site; EUR 83,000 - 148,000; Full time

Job summary

Pauwels Consulting is seeking a Security Pentester for a major public sector client in Brussels. You will perform web app, API, and network security testing, and craft detailed remediation reports.

Responsibilities include testing Windows/AD environments, contributing to security tooling, and presenting findings to project teams. Fluency in multiple languages and strong technical writing are valued for collaboration with senior experts.

Qualifications

• 3+ years in offensive security focusing on web app and API testing (OWASP).
• 3+ years in network security with TCP/IP, DNS, HTTP/S, and SMB.
• Windows/Active Directory security knowledge: NTLM, Kerberos, PowerShell.

Responsibilities

• Perform penetration tests on web apps, APIs, and portals (black/grey/white box).
• Assess internal/external networks for segmentation, filtering and protocol issues.
• Test Windows/Active Directory environments (Kerberos, GPO, ACL, lateral movement).
• Analyze architectures and data flows to identify attack surfaces and critical assets.
• Document vulnerabilities with reproduction steps and remediation recommendations.
• Present findings to technical teams and project managers for risk management.
• Contribute to internal methodologies, checklists, and tooling improvements.

Skills

Offensive security

Web application security

API security

Network security

Windows security

Active Directory security

PowerShell

Technical writing

Multilingual

Tools

Kali Linux

Burp Suite

Nmap

Metasploit

Job description

Pauwels Consulting is seeking a Security Pentester for a major public sector client in Brussels. You will perform web app, API, and network security testing, and craft detailed remediation reports.

Responsibilities include testing Windows/AD environments, contributing to security tooling, and presenting findings to project teams. Fluency in multiple languages and strong technical writing are valued for collaboration with senior experts.