Telephony System Ing.

ph3Telephony Technical Lead Systems Engineer (Senior) /h3 pbLocation: /b Brussels (Hybrid
- minimum 3 days on-site)br/bStart Date: /b ASAPbr/bDuration: /b Long-term assignment (2 years+ with possible extensions)br/bLanguage

Requirements:
/b Fluent French or Dutch, with a strong passive knowledge of the other national language, plus professional English. /p h3About the Opportunity /h3 pOur client, a major organization operating critical infrastructure and utility services in Belgium, is seeking an experienced bTelephony Technical Lead Systems Engineer /b to join its Infrastructure Operations team. /p pYou will act as the technical expert for IP telephony solutions, supporting both strategic transformation projects and day-to-day operational activities. The role combines technical leadership, solution design, infrastructure expertise, and operational support within a complex enterprise environment. /p h3Key Responsibilities /h3 pbProject Transformation Activities /b /p ul liDesign and define telephony infrastructure solutions in collaboration with architects, engineers, and security teams. /li liLead technical decision-making for telephony-related projects. /li liSupport the modernization and evolution of enterprise telephony platforms. /li liEnsure solutions meet requirements for scalability, resilience, security, and performance. /li liCoordinate technical activities across multidisciplinary teams. /li /ul pbOperational Activities /b /p ul liEnsure high availability and performance of telephony services. /li liProvide expert support during incidents and complex troubleshooting activities. /li liLead root cause investigations and problem management initiatives. /li liDrive continuous improvement and optimization of the telephony environment. /li liAct as the go-to expert for telephony technologies and infrastructure services. /li /ul h3Required Skills Experience /h3 ul liMinimum b7 years of experience /b with bIP Telephony solutions /b. /li liProven experience as a bTechnical Lead /b within infrastructure or development projects. /li liStrong background in bSolution Design /b. /li liRecent involvement in bIP Telephony projects /b within the last 2 years. /li liExtensive knowledge of: ul liSIP and VoIP technologies /li liEnterprise telephony platforms /li liRouting, switching, and IP networking /li liFirewall management /li liInfrastructure architecture and design /li /ul /li liExperience leading and coordinating technical teams. /li liStrong analytical and troubleshooting abilities. /li liFluent communication skills in English and either French or Dutch. /li /ul h3Nice-to-Have Skills /h3 ul liExperience within the bUtilities, Energy, or Critical Infrastructure /b sector. /li liKnowledge of Check Point firewalls. /li liExperience with Mitel / MiCollab environments. /li liExperience with Solidus solutions. /li liExperience with voice recording platforms. /li liDevelopment, testing, and debugging experience. /li /ul h3Working Environment /h3 pYou will join a highly skilled infrastructure department responsible for maintaining and modernizing mission-critical IT and operational technology platforms. The team supports large-scale digital transformation initiatives while ensuring operational excellence and service reliability. /p h3Working Conditions /h3 ul liHybrid working model (minimum 3 days on-site). /li liFull-time assignment. /li liLong-term engagement with strong extension potential. /li liLaptop provided. /li /ul /p