Back Office CS Core Engineer - Bucharest

Back Office CS Core Engineer
Bucureşti
Bucharest, Romania

Main activities and tasks:

Provide
- line operational support for the Core network, ensuring high availability, stability, and service quality.

Manage the lifecycle of Core-related Incidents, Problems, and Changes, coordinating with vendors, field engineers, and stakeholders.

Perform configuration, integration, and maintenance of Core nodes across legacy and
- native platforms.

Monitor performance KPIs, signalling flows, and service quality metrics, proactively detecting degradations and implementing corrective actions.

Participate in Change Management, planning and executing software upgrades, capacity expansions, parameter changes, and feature activations in line with approved Methods of Procedure (Mo
Ps).

Conduct acceptance testing and validation for new Core nodes, releases, and services before production rollout.

Provide remote technical support for Core-related implementation or troubleshooting activities, including interworking with RAN, IP transport, and Data Centre teams.

Support Problem Management by performing root cause analysis (RCA) of recurring service issues and recommending permanent fixes.

Deliver reports and documentation on incidents, performance trends, and network changes, contributing to the operational knowledge base.

Participate in public event assurance by monitoring Core traffic and subscriber sessions during peak or special events.

Cover 24x7
- call duties, acting as technical authority for Core-related escalations.

Required Experience:

Hands-on operational experience with Core network elements.

Familiarity with NFVI / Cloud Native platforms and Core virtualisation.

Strong background in Incident, Problem, and Change Management in telecom Core networks.

Knowledge of interworking between RAN, IP/MPLS, and Core.

Experience in Managed Services or NOC environments is desirable.

Specific skills & technical knowledge:

Good understanding of CS Core architecture, including MSC-S, MGw, GMSC, SS7 FW, and signalling interworking with PS and IMS domains.

Knowledge of CS Core interfaces (A, Iu-CS, MAP, CAP, ISUP) and related signalling protocols.

Familiarity with voice call control, roaming, and supplementary services.

Awareness of SR-VCC and IMS interworking for Vo
LTE fallback.

Experience analysing CS Core KPIs such as call setup success rate, handover success rate, and congestion management.

What We Offer:

Growth Opportunities Support for learning and career advancement.

Work-Life Balance Flexible hours and hybrid work options.

Inclusive Culture A welcoming, diverse environment where everyone feels valued.

Generous Time Off

Informații detaliate despre oferta de muncă

Firma:	CONNECT44
Localiția:	Bucureşti Bucharest, Romania
Adăugat:	30. 10. 2025 Postul de muncă activ

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Back Office CS Core Engineer Bucharest

Back Office CS Core Engineer
Bucureşti
Bucharest, Romania

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