Engineer- IMS (Ericsson)

We are seeking an End-to-End IMS Expert (Ericsson & Nokia) to join our team. This role will be responsible for end-to-end ownership of IMS domains across Ericsson and Nokia network architectures, covering design, configuration, upgrades, troubleshooting and service assurance. As a senior subject matter expert, you will ensure network stability, performance, scalability and security, while supporting operations, transformation and managed services handover initiatives. The role requires close collaboration with L2/L3 support teams, vendors and customer stakeholders.

Responsibilities

Provide end-to-end technical ownership of IMS networks across Ericsson platforms; Perform configuration, upgrades, updates and redeployment activities across Packet Core and IMS nodes as part of incident resolution or planned changes; Handle incident, problem and change management, including review and closure of TT, CR and AT on a daily basis; Act as Expert support for complex network issues impacting data and voice services; Ensure compliance with MSTOP processes, operational governance and best practices; Ensure security policies, password policies, access controls and audits are implemented and periodically reviewed across all nodes; Participate in root cause analysis (RCA) and preventive actions to improve network stability and reduce recurring issues; Support managed service handover, knowledge transfer and shadowing activities for operations teams; Contribute to the creation, review and enhancement of SOPs, runbooks and operational procedures; Actively participate in technical discussions, architecture reviews and optimization initiatives to improve overall network performance and customer experience; Coordinate with vendor support, engineering teams and customer stakeholders during major incidents, changes and network upgrades

Requirements

Strong end-to-end expertise in IMS architecture, operations and troubleshooting; Hands-on experience with Ericsson IMS nodes, including virtualized and cloud-based deployments; Deep understanding of mobile core technologies across 2G/3G/4G/5G (NSA/SA) environments; Excellent troubleshooting, analytical and RCA skills with the ability to handle high-severity incidents; Strong understanding of security compliance, access management and audit requirements in telecom networks; Effective communication and stakeholder management skills, with the ability to lead technical discussions and bridge operations and engineering teams; Ability to work independently with minimal supervision and take ownership of critical network domains; Bachelor’s degree or equivalent in Electronics, Telecommunications, Computer Science, or a related discipline; Relevant years of relevant experience in IMS operations, engineering, or managed services; Strong expertise in Ericsson core network environments; Ericsson IMS products (CSCF, MTAS, SBG, UDM, ENUM, etc.); Virtualization / Cloud: vEPC, VNFs, NFVI, OpenStack, Kubernetes; GSM, GPRS, WCDMA, LTE, 5G Core (NSA/SA); Signaling protocols: Diameter, SIP, GTP-C/GTP-U, HTTP/2