{"schemaVersion":"jobsearcher.job.v1","id":"dc2f1cadd2abe7822aaa462f","url":"https://jobsearcher.com/jobs/dc2f1cadd2abe7822aaa462f","canonicalUrl":"https://jobsearcher.com/jobs/dc2f1cadd2abe7822aaa462f","title":"IMS Core Engineer","description":"Location\nRemote\nEmployment Type\nFull time\nLocation Type\nRemote\nDepartment\nEngineering\n\nIMS Core Engineer / Architect\nThe IMS/VoLTE Integration Engineer will analyze, prepare, implement and verify the configuration and integration of a node, network and/or system. Your scope of work could include the scenarios of introduction, upgrade expansion, functionality and capacity. Your work will in part form our customer legacy.\nKey responsibilities :\nAs part of the mobile core team, you will take care of our IMS mobile platform; you will have the following responsibilities:\nManage networks and nodes within the IMS domain for our 2.5G, 3G & 4G networks (SIP, H323, IMS/IMT, VoLTE, VoWiFi)\nUsing dashboards (and building new ones) to clearly and quickly discover issues and patterns\nAccountable and responsible to follow the communications procedures in place when handling an incident. Communication is both internal within our company and external to our third-party providers.\nMaintenance, troubleshooting, security audits, and emergency response\nUndertake fault handling and corrective actions on node, service and infrastructure level\nHandle project activities, implementing / adapting (new) IMS E2E service functionalities, nodes, services\nWhen needed, cover the 7x24 monitoring shift responsibilities (On call support, Baby Sitting activities etc.)\nWireshark tracing of critical infrastructure to debug issues\nProvide input, implement and verify improvements in processes and work instructions ·\nVerify and implement configuration changes\nWork to identify and drive improvement\nKey Qualifications\nAt least 10 years’ experience in the core network domain with a mobile networks\nHolding a BSc degree in Telecommunication or Computer Science (post-graduate studies are a bonus) and 10+ years core telecommunications network experience.\nWorking knowledge of telecom networks like 2G, 2.5G, 3G and LTE (MME, SGW, PGW, and MME).\nGreat Conceptual understanding of IMS evolution and trends - IMS Subsystems, functionalities and IMS services call flows.\nGreat knowledge of IMS network topology (their various interfaces), Core IMS Parameters and Features.\nWorked on different type of Core Nodes, CSFB, IMS (P-CSCF, I-CSCF, S-CSCF, MTAS, HSS, CUDB, MGCF, etc.).\nExperience with SS7, ISUP, BICC, SIP, H248, Diameter signaling & protocols configuration change IMS based services is necessary.\nOperation 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.\nConfiguration preparation & implementation for configuration changes requests for IMS nodes and Integration for all nodes (S-CSCF, I-CSCF, MTAS, HSS, CUDB, etc.) as well.\nHands on with sniffers, Wireshark and testing tools in advanced mode.\nHands on with Linux/Unix based systems (you can find your way around a linux shell).\nUnderstanding of 3GPP, ITU-T and ANSI standards.\nUnderstanding of roaming agreements and IR.21, including IREG testing.\nVoLTE Troubleshooting and call trace analysis.\nStrong writing and documentation skills are needed to develop reports.\nAdaptability and responding to change.\nBe able to work under pressure.\nYou are fluent in English (written and spoken).\nReady to work on morning/afternoon shifts.\nGood interaction with external customers and internal teams.\nNice to have\n2+ years scripting experience (Python, Bash, etc.)\nOXIO 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 hr@oxio.io for more information.","company":"Oxio","rawCompany":"oxio","city":"Remote","state":"OR","isRemote":false,"isActive":false,"createdAt":"2026-08-03T14:50:30.493Z","occupations":[{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1241.01","title":"Telecommunications Engineering Specialists","slug":"telecommunications-engineering-specialists"},{"code":"15-1241.00","title":"Computer Network Architects","slug":"computer-network-architects"}],"industries":[{"code":"517112","title":"Wireless Telecommunications Carriers (except Satellite)","slug":"wireless-telecommunications-carriers-except-satellite"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"517810","title":"All Other Telecommunications","slug":"all-other-telecommunications"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"IMS Core Engineer","description":"Location\nRemote\nEmployment Type\nFull time\nLocation Type\nRemote\nDepartment\nEngineering\n\nIMS Core Engineer / Architect\nThe IMS/VoLTE Integration Engineer will analyze, prepare, implement and verify the configuration and integration of a node, network and/or system. Your scope of work could include the scenarios of introduction, upgrade expansion, functionality and capacity. Your work will in part form our customer legacy.\nKey responsibilities :\nAs part of the mobile core team, you will take care of our IMS mobile platform; you will have the following responsibilities:\nManage networks and nodes within the IMS domain for our 2.5G, 3G & 4G networks (SIP, H323, IMS/IMT, VoLTE, VoWiFi)\nUsing dashboards (and building new ones) to clearly and quickly discover issues and patterns\nAccountable and responsible to follow the communications procedures in place when handling an incident. Communication is both internal within our company and external to our third-party providers.\nMaintenance, troubleshooting, security audits, and emergency response\nUndertake fault handling and corrective actions on node, service and infrastructure level\nHandle project activities, implementing / adapting (new) IMS E2E service functionalities, nodes, services\nWhen needed, cover the 7x24 monitoring shift responsibilities (On call support, Baby Sitting activities etc.)\nWireshark tracing of critical infrastructure to debug issues\nProvide input, implement and verify improvements in processes and work instructions ·\nVerify and implement configuration changes\nWork to identify and drive improvement\nKey Qualifications\nAt least 10 years’ experience in the core network domain with a mobile networks\nHolding a BSc degree in Telecommunication or Computer Science (post-graduate studies are a bonus) and 10+ years core telecommunications network experience.\nWorking knowledge of telecom networks like 2G, 2.5G, 3G and LTE (MME, SGW, PGW, and MME).\nGreat Conceptual understanding of IMS evolution and trends - IMS Subsystems, functionalities and IMS services call flows.\nGreat knowledge of IMS network topology (their various interfaces), Core IMS Parameters and Features.\nWorked on different type of Core Nodes, CSFB, IMS (P-CSCF, I-CSCF, S-CSCF, MTAS, HSS, CUDB, MGCF, etc.).\nExperience with SS7, ISUP, BICC, SIP, H248, Diameter signaling & protocols configuration change IMS based services is necessary.\nOperation 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.\nConfiguration preparation & implementation for configuration changes requests for IMS nodes and Integration for all nodes (S-CSCF, I-CSCF, MTAS, HSS, CUDB, etc.) as well.\nHands on with sniffers, Wireshark and testing tools in advanced mode.\nHands on with Linux/Unix based systems (you can find your way around a linux shell).\nUnderstanding of 3GPP, ITU-T and ANSI standards.\nUnderstanding of roaming agreements and IR.21, including IREG testing.\nVoLTE Troubleshooting and call trace analysis.\nStrong writing and documentation skills are needed to develop reports.\nAdaptability and responding to change.\nBe able to work under pressure.\nYou are fluent in English (written and spoken).\nReady to work on morning/afternoon shifts.\nGood interaction with external customers and internal teams.\nNice to have\n2+ years scripting experience (Python, Bash, etc.)\nOXIO 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 hr@oxio.io for more information.","datePosted":"2026-08-03T14:50:30.493Z","dateModified":"2026-08-03T14:50:30.493Z","hiringOrganization":{"@type":"Organization","name":"Oxio","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Remote","addressRegion":"OR","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"dc2f1cadd2abe7822aaa462f"},"url":"https://jobsearcher.com/jobs/dc2f1cadd2abe7822aaa462f"}}