We are looking for a seasoned Senior Voice & Contact Center Engineer to lead the management, optimization, and modernization of our 3CX-based call center infrastructure. This role is critical in ensuring high availability of voice systems, enabling advanced features, and driving our transition from outsourced telephony to a fully managed on-premise solution.Key Responsibilities:Own and maintain the full 3CX call center environment, ensuring stability, uptime, and performanceLead the migration from outsourced call center infrastructure to an on-premise 3CX setup, ensuring minimal service disruptionDesign and implement modern contact center features (e.g., IVR, call routing, call recording, real-time dashboards)Monitor and troubleshoot call quality issues, system errors, and SIP trunk-related incidentsEnsure integration of 3CX with other platforms (CRM, ticketing systems, reporting tools)Collaborate with Customer Care and IT teams to understand needs and continuously enhance voice capabilitiesEstablish monitoring tools and alerting mechanisms to ensure system availability and early issue detectionDevelop documentation for architecture, processes, and disaster recoveryEnsure compliance with security, data privacy, and regulatory standardsTrain and support internal stakeholders on 3CX features and best practicesRequirementsProven experience in managing 3CX systems or similar PBX platforms (Asterisk, Cisco Call Manager, etc.)Strong knowledge of SIP, VoIP protocols, call routing, and telephony infrastructureHands-on experience with call center system modernization and feature enablementExperience in system migrations and on-premise deploymentsUnderstanding of integrations between telephony systems and CRMs or customer service platformsFamiliarity with network fundamentals (QoS, NAT, firewalls) as they relate to VoIP performanceAnalytical and structured problem solver with high attention to availability and uptimeExcellent communication and stakeholder management skillsNice to Have:3CX certification(s)Experience with contact center reporting tools and wallboardsFamiliarity with workforce management or call analytics platforms