oxio - IMS Core Engineer

• At least 10 years’ experience in the core network domain with a mobile networks • Holding a BSc degree in Telecommunication or Computer Science (post-graduate studies are a bonus) and 10+ years core telecommunications network experience. • Working knowledge of telecom networks like 2G, 2.5G, 3G and LTE (MME, SGW, PGW, and MME). • Great Conceptual understanding of IMS evolution and trends - IMS Subsystems, functionalities and IMS services call flows. • Great knowledge of IMS network topology (their various interfaces), Core IMS Parameters and Features. • Worked on different type of Core Nodes, CSFB, IMS (P-CSCF, I-CSCF, S-CSCF, MTAS, HSS, CUDB, MGCF, etc.). • Experience with SS7, ISUP, BICC, SIP, H248, Diameter signaling & protocols configuration change IMS based services is necessary. • Operation and maintenance of IMS platforms for Alarms, faults/abnormal conditions handling, Analysis of traces, High troubleshooting skills, system backup/restore from backup files, Fault Diagnostics, Preventive Maintenance & upgrades of IMS nodes. • Configuration preparation & implementation for configuration changes requests for IMS nodes and Integration for all nodes (S-CSCF, I-CSCF, MTAS, HSS, CUDB, etc.) as well. • Hands on with sniffers, Wireshark and testing tools in advanced mode. • Hands on with Linux/Unix based systems (you can find your way around a linux shell). • Understanding of 3GPP, ITU-T and ANSI standards. • Understanding of roaming agreements and IR.21, including IREG testing. • VoLTE Troubleshooting and call trace analysis. • Strong writing and documentation skills are needed to develop reports. • Adaptability and responding to change. • Be able to work under pressure. • You are fluent in English (written and spoken). • Ready to work on morning/afternoon shifts. • Good interaction with external customers and internal teams. • 2+ years scripting experience (Python, Bash, etc.) • OXIO is committed to fostering a diverse, equitable, and inclusive workplace where all employees feel valued and empowered. We believe that diversity in all its forms drives innovation and creativity, and we strive to create an environment that reflects and celebrates the unique backgrounds, perspectives, and talents of our employees. We do not discriminate against any employee or applicant for employment based on race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age, disability, genetic information, veteran status, or any other characteristic protected by applicable federal, state, or local law. We are dedicated to providing a work environment free from discrimination and harassment. We committed to ensuring that all qualified applicants have an equal opportunity to apply for job openings. If you need assistance or an accommodation due to a disability, please contact us at [email protected] for more information.