NTT

2 weeks ago

Core Network Engineer / Network Solution Architect

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Last checked: 15 hours agoStatus: Live

Job Summary

Support the engineering and evolution of core mobile network solutions across Data Core and/or Voice Core (EPC and/or 5GC). Contribute to new features, services, and network changes aligned with customer and business requirements. Review and maintain technical documentation (HLD/LLD, message flows, procedures), assess feasibility and interoperability impacts, and lead troubleshooting/root-cause analysis for complex service issues. Collaborate with engineering, operations, testing, and vendors, acting as a technical reference across multi-domain projects.

Location: Milan

Workplace: Hybrid

Employment Type: Full time

Job Function: Solutions Engineering & Sales Engineering

Seniority: Mid level

Key Responsibilities

•Support engineering and evolution activities for core network solutions in Data Core and Voice Core domains.
•Contribute to the introduction of new functionalities, services, and network changes according to customer and business requirements.
•Review and support technical documentation including HLD, LLD, guidelines, message flows, and implementation procedures.
•Evaluate technical feasibility, interoperability impacts, and implementation constraints for network changes or new services.
•Support troubleshooting and root cause analysis for complex issues affecting core services and network interoperability, collaborating with engineering, operations, testing, and vendors.

Key Requirements

•5–10 years of experience in Core Network Engineering in the telecommunications sector.
•Strong technical background in Data Core and/or Voice Core.
•Deep knowledge of Mobile Core Network architectures (EPC and/or 5GC) and related service flows.
•Experience delivering and integrating Core Network solutions.
•Knowledge of 3GPP standards and GSMA guidelines, plus solid IP networking and transport protocol understanding.

Experience:Telecommunications

Skills:OwnershipProblem solvingAnalytical thinkingStakeholder managementCollaboration

Tech Stack:3GPPGSMAEPC5GCIP networkingTransport protocols

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

Website LinkedIn

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NTT