Senior Network Engineer – Cisco ASAv Specialist Location: Brussels (on-site, city centre) Start Date: ASAP Languages: Dutch and/or French, with good command of EnglishOverviewWe are urgently looking for an experienced Senior Network Engineer to support one of our clients in Brussels. The focus of this assignment is to analyze and remediate vulnerabilities within their existing Cisco ASAv environment.This is a high-impact, hands-on role requiring expertise in Cisco ASAv, VPN security, and integration with Microsoft Entra ID (formerly Azure AD).ResponsibilitiesAnalyze the current Cisco ASAv setup for vulnerabilities and propose corrective actionsSeparate the AnyConnect VPN from the administrative portal, restricting management access to internal networks onlyStrengthen authentication processes using SAML with Microsoft Entra ID (Azure AD)Prepare and apply relevant patches and firmware updatesReplace self-signed certificates with validated, trusted certificatesCreate comprehensive and up-to-date documentation and architecture diagramsRequired Profile5+ years of experience as a network engineer in complex environmentsExpert-level knowledge of Cisco ASAv, VPN configuration, and network securityHands-on experience with SAML integration and Microsoft Entra ID / Azure ADFamiliarity with certificate management and patching best practicesStrong analytical mindset and a proactive, hands-on attitudeSkilled in producing clear documentation and architecture overviews