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Three Ireland

Roaming Engineer

Three Ireland

  • Dublin City Centre
  • Negotiable
  • Contract
  • Updated 06/02/2018
  • Amanda Ferrick
this job is expired
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The job in a nutshell This position will report to the Roaming Operations Team Manager within the Wholesale function in Three Ireland. The successful candidate will be responsible for managing a b


The job in a nutshell

This position will report to the Roaming Operations Team Manager within the Wholesale function in Three Ireland. The successful candidate will be responsible for managing a broad range of activities that support Threes international roaming business. The successful candidate will be responsible for performing day to day activities related with international roaming, troubleshooting any roaming related technical problem, performing tests and establishing new roaming relationships foreign network partners and delivering world class roaming quality to Three customers. This is a 2 year fixed term contract and could be based out of Dublin or Limerick.

The successful candidate will be required to perform IREG testing on all services GSM (IR24), GPRS (IR35), CAMEL (IR32,IR60), 3G, 3.5G and 4G. The successful candidate will be performing Network Implementations of the roaming partner`s data on the MSCs, HLRs and on the other necessary nodes.

What else it involves

Completing IR documents required for IREG testing completion.

Test and Validate CDR`s (billing records) for all new roaming operators.

Call functionality testing for Roaming partners. GSM/Data/Camel etc.

Support Trouble Shooting of Roaming issues.

Escalate issue to Operators` Network Engineering where appropriate.

Troubleshoot on IREG / Network Issues by identifying though SS7 and GPRS traces or the node in the network that is at fault.

Coordinate IREG Activities with other operators IREG/ Network Engineers and schedule the tests.

Develop and maintain IR21 database that contains all Roaming partners` necessary information and related documents for easy reference.

Administration of Roaming Data base son GSMA.

New Core Network nodes roaming acceptance and roaming database validation (MSS, SGSN, IN, HLR,STP...)

Investigate inbound &outbound roaming faults in order to restore service for the customer using the relevant traces of MAP, ISUP,MNP,SCCP and IP.

Work closely with Roaming Partners, 3rd party suppliers and element owners within 2nd line.

Provide clear, concise communications to the stakeholders above at all times.

Raise work orders/change requests to implement roaming partners IR21 changes of NDC, IP and GT on the network.

Ensure all work is carried out and documented in accordance with required standards, methods and procedures.

Prioritise and schedule incoming incidents and requests.

Facilitate the resolution of incidents and work within cross-functional teams when necessary to drive problem resolution.

Deliver manage and respond to support requests, typically via Remedy, e-mails, escalations and project support.

From time to time there will be a requirement to represent Three Ireland within Hutchison Roaming Group (representative group for all Three OPCOS in Europe and Asia), ensuring that Three Ireland business objectives are represented.

As required provide support to other Wholesale/Business Projects.

The skills we`re looking for

Understanding of 2G/3G/4G (LTE) Inbound/Outbound Voice & Data Roaming call flows, International SMS,MMS& MNP.

Experience of IREG test cases and troubleshooting.

Knowledge of SS7 & Sigtran Protocols.

Experience of investigating roaming service issues & trouble shooting methodologies..

Knowledge of Nokia core switching network, including HLR`s, MSC`s, MGW`s, SGW`s,

Knowledge of Samsung MMEs, HSSs, P-Gateway and S-Gateway.

Strong communication and decision-making skills.


You have a diploma in a related field of study with minimum 3 years experience as a Network Engineer, as a Roaming Engineer or IREG/Tadig role.

You have experience with IR24, IR35, IR32, IR60 and roaming testing.

You have strong knowledge on SS7 Signalling and Core network

Various training certificates in Core network area.

Three is an equal opportunities employer

Ref: 65822
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