Junior Core Network Engineer

NTT
Milan
Workplace: HybridFull timeFunction: IT Operations (Systems/Network Admin)Experience: 1-3 yearsSkills: ["Analytical thinking","Problem solving","Continuous learning","Technical communication","Documentation accuracy"]

Support engineering, analysis, and validation of Core Network 4G/5G/IMS solutions, including creating and updating technical documentation (HLD/LLD, message flows, procedures). Participate in lab and field testing for mobile network elements, analyze logs/signaling traces and KPIs, and help troubleshoot issues with senior guidance. Deepen knowledge of 3GPP specifications and GSMA recommendations while collaborating with project, internal teams, clients, and multi-vendor stakeholders.

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FursaFursa
NTT
NTT
1 day ago

Junior Core Network Engineer

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Source: Company careers pageValidated by: Fursa AI
Last checked: 10 hours agoStatus: Live
Reposted: similar role first listed 2 months ago

Job Summary

Support engineering, analysis, and validation of Core Network 4G/5G/IMS solutions, including creating and updating technical documentation (HLD/LLD, message flows, procedures). Participate in lab and field testing for mobile network elements, analyze logs/signaling traces and KPIs, and help troubleshoot issues with senior guidance. Deepen knowledge of 3GPP specifications and GSMA recommendations while collaborating with project, internal teams, clients, and multi-vendor stakeholders.
Location: Milan
Workplace: Hybrid
Employment Type: Full time
Job Function: IT Operations (Systems/Network Admin)
Seniority: Entry level

Key Responsibilities

  • •Support engineering, analysis, and validation of Core Network 4G/5G/IMS solutions.
  • •Define, draft, and maintain technical documentation for Core Network architectures (HLD, LLD, guidelines, message flows, procedures).
  • •Participate in testing activities in the lab and/or in the field for 4G/5G Core Network elements.
  • •Support technical analysis for new features, network changes, and introduction of new services.
  • •With senior guidance, perform troubleshooting of network problems by analyzing logs, signaling traces, and KPIs.

Key Requirements

  • •1–3 years of experience in telecommunications, testing, operations, or related fields.
  • •Basic knowledge of 4G/5G mobile networks and IP networking/transport protocols.
  • •Interest in EPC, 5GC, IMS, VoLTE/VoNR, and Mobile Private Network architectures.
  • •Knowledge of mobile network protocols such as SS7, Diameter, GTPv2, and SIP.
  • •Basic troubleshooting skills using logs, signaling traces, KPIs, and tools like Wireshark.
Experience:1-3 yearsTelecommunicationsTestingNetwork operations
Skills:Analytical thinkingProblem solvingContinuous learningTechnical communicationDocumentation accuracy
Languages:English
Tech Stack:4G5GEPC5GCIMSVoLTEVoNRMobile Private NetworkIP networkingSS7DiameterGTPv2SIP3GPPGSMAWiresharkTroubleshootingKPI

Company Brief

NTT
Dimension Data, operating under NTT Ltd, provides managed IT services, cloud and data center solutions, networking, cybersecurity, and digital transformation services to enterprise customers worldwide.
Industry: Professional Services
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Established Company
Valuation: Public Company (Market Cap in USD)
Headquarters: London, United Kingdom
Founded: 1983
WebsiteLinkedIn