Design, develop, test and deploy voice/IMS service logic on Telecom Application Server platforms, collaborate on cross-functional projects, and manage end-to-end project delivery for voice and messaging services.
Responsibilities
Design, develop, test and deploy voice/IMS service logic on Telecom Application Server platforms
Collaborate with other Networks teams to define and manage projects for the delivery of new voice and application server solutions
Own end-to-end project delivery: network design, integration and migration strategy
Design new consumer and corporate voice/telecom solutions
Create and maintain technical documentation (HLDs, LLDs, Work Orders, etc.)
Requirements
Bachelor's in Telecommunications Engineering
Bachelor's in Computer Science
Nice to have: 3+ years designing and implementing mobile core networks in the telecoms industry
Nice to have: Hands-on experience with Rhino (JAIN SLEE) specifically
Nice to have: Experience with open-source SIP platforms such as Kamailio and FreeSWITCH
Design, integrate, and support enterprise wireless LAN/WAN over OSP/FTTx networks, engineer and implement GPON solutions for Marine Corps installations.
Responsibilities
Plan, design, implement, and optimize wireless LAN and related technologies integrated with GPON.
Develop engineering drawings, test plans/procedures, and cutover/migration documentation.
Provide operational support for large-scale, high-availability wireless deployments; troubleshoot LAN/WAN/wireless issues.
Conduct feasibility analyses; execute tests, log defects, verify fixes, and contribute to test strategies.
Perform site audits; ensure network compatibility and recommend remediation.
Asegurar la continuidad operacional, disponibilidad, capacidad y desempeño de las plataformas que soportan los servicios móviles de voz y datos sobre redes 4G LTE y 5G.
Responsibilities
Monitorear y asegurar la disponibilidad y estabilidad de las plataformas EPC, IMS y 5G Core, supervisando alarmas, eventos y KPI de voz y datos
Realizar troubleshooting avanzado de incidentes asociados a sesiones de datos, movilidad, conectividad y servicios de voz, ejecutando análisis de causa raíz cuando corresponda
Operar y analizar componentes e interfaces de EPC y 5GC, incluyendo la gestión de sesiones, autenticación, movilidad y conectividad de servicios móviles
Monitorear y soportar servicios IMS, VoLTE y VoWiFi, analizando señalización y protocolos como SIP y Diameter
Gestionar el performance y capacidad del Core, identificando tendencias de tráfico, riesgos de saturación y oportunidades de optimización
Requirements
Título profesional en Ingeniería en Telecomunicaciones, Electrónica, Informática o carrera afín
Garantizar la disponibilidad, estabilidad, capacidad y desempeño de la red de acceso móvil (LTE, VoLTE y 5G) mediante monitoreo especializado, análisis de KPI, resolución de incidentes complejos y optimización de recursos radioeléctricos.
Responsibilities
Asegurar la continuidad operacional, estabilidad y disponibilidad de la red RAN LTE, VoLTE y 5G
Analizar KPI, contadores y estadísticas de rendimiento
Atender incidentes escalados y realizar troubleshooting avanzado L2/L3
Gestionar la capacidad de la red
Diseñar e implementar acciones de optimización de cobertura, capacidad y performance
Requirements
Título profesional en Ingeniería en Telecomunicaciones, Electrónica, Informática o carrera afín
Lead the strategy, commercial performance and end-to-end execution of the Wholesale Mobile portfolio across National Roaming, MVNO/MVNE, Managed Network Services, Wholesale APN and Reverse Billed Data.
Locations (2)
Johannesburg, South Africa, South Africa
Midrand, South Africa, South Africa
Responsibilities
Own and execute the Wholesale Mobile strategy, annual operating plan and go-to-market priorities
Own portfolio revenue, margin, cost, forecast and P&L performance
Lead the end-to-end product and customer lifecycle
Negotiate, conclude and govern strategic agreements with mobile operators, MVNO/MVNE partners, managed-network customers, APN and RBD wholesalers
Lead people and cross-functional delivery across Technology, Finance, Billing, Legal, Regulatory, Sales and Operations
Requirements
3 or 4 year degree in Engineering, Commerce, Business or related discipline
Lead strategy, commercial performance and execution of Vodafone’s Wholesale Mobile portfolio across national roaming, MVNO/MVNE, managed network services, APN and reverse billed data.
Responsibilities
Own and execute the Wholesale Mobile strategy, annual operating plan and go-to-market priorities
Own portfolio revenue, margin, cost, forecast and P&L performance
Lead the end-to-end product and customer lifecycle
Negotiate, conclude and govern strategic agreements with mobile operators and partners
Lead people and cross-functional delivery across Technology, Finance, Billing, Legal, Regulatory, Sales and Operations
Requirements
Bachelor's degree in Engineering, Commerce, Business or related discipline
Define and lead end-to-end design and deployment of mission‑critical communication platforms for enterprise and industrial environments, ensuring high availability, low latency, and secure interoperability across devices, networks, and dispatch systems.
Responsibilities
Architecting Mission Critical Services solutions (MCPTT/MCVideo/MCData), including QoS, priority and preemption, group communications, and service continuity across complex environments
Leading end-to-end solution blueprints spanning access network, transport, core, IMS/application layer, dispatch and recording systems, device ecosystems, and integration interfaces
Driving vendor selection, solution validation, and deployment governance including HLD/LLD documentation, integration planning, cutover strategies, and acceptance testing
Defining resilience architecture encompassing geo‑redundancy, active‑active/active‑standby configurations, disaster recovery strategy, backup and restore, and observability frameworks
Establishing security‑by‑design principles and compliance guardrails for MCX services, covering encryption, identity management, key management, and auditability
Seeking a dedicated Support Engineer to join a small IMS support team focused on 5G Core and Cloud Core for NACI customers. The role involves owning complex L2/L3 incidents, improving network stability, and working with cross-functional teams to reduce outages and deliver high-performing 5G Cloud Core solutions.
Responsibilities
Lead investigations and drive the resolution of complex L2/L3 incidents across IMS, 5G Core and Cloud Core environments.
Restore customer networks and services during critical incidents, taking ownership of fault isolation, advanced troubleshooting and service recovery.
Analyse system behaviour, identify root causes and work with problem management to prevent repeat faults and improve live network stability.
Collaborate with product, project and delivery teams to support safe introduction of new CCxx releases and operational changes.
Communicate clearly with customers and internal stakeholders during high-pressure incidents, providing timely updates and practical technical guidance.
Core Network Lead, Run TeamNewAiralo · Remote
Wireless Network EngineerNewSAIC · Stafford, US
Executive Head: Wholesale MobileVodafone · Johannesburg, South Africa+1 more
Executive Head: Wholesale MobileVodafone · Midrand, South Africa
MCX Solution Architect (Mission Critical Communications)Capgemini · Riyadh, Saudi Arabia
Customer Network Support EngineerEricsson · North Ryde, Australia