1GLOBAL

Roaming IREG Engineer

1GLOBAL

full-time

Posted on:

Location Type: Hybrid

Location: Rio de Janeiro • Brazil

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About the role

  • __****Key Responsibilities**__
  • - Plan, execute, and document IREG tests (IR.24, IR.35, IR.50, etc.) for voice, SMS, and data services, in line with GSMA standards.
  • - Set up and verify interconnect links for voice and messaging services with partner operators.
  • - Monitor roaming service KPIs, troubleshoot issues, and ensure compliance with roaming agreements.
  • - Configure and test SS7, Diameter, SIP, and related signaling protocols for international connectivity.
  • - Liaise with foreign operators, roaming hubs, and internal teams during implementation and troubleshooting.
  • - Maintain up-to-date test results, network configurations, and operational procedures.
  • - Oversee the footprint management of all 1Global products, working closely with the wholesale and other networks team.

Requirements

  • **Must Have**
  • - Perform end-to-end roaming testing (voice, SMS, data, CAMEL, VoLTE, 5G roaming).
  • - Execute IREG test cases according to GSMA guidelines and bilateral agreements.
  • - Analyze and troubleshoot roaming issues with signaling traces and logs.
  • - Work closely with international roaming partners to resolve interconnect problems.
  • - Manage and update roaming documentation (IR.21)
  • - Support new roaming launches (testing and activation of new operators, technologies, and services).
  • - Coordinate with internal teams (Core Network, Billing, etc) during testing and troubleshooting.
  • - Validate TAP files and charging/billing aspects of roaming services.
  • - Monitor KPIs and performance of roaming services after launch.
  • - Follow-up and define Quality and Performance indicators for the entire roaming service.
  • - Close relationship with external partners like carriers, service providers.
  • - Have successful partnerships with other departments and teams.
  • ****Qualifications**
  • - Degree in Telecom Engineering or Computer Science or equivalent experience
  • - Knowledge of 3GPP, ETSI, standards and specifications for SIM/eSIM
  • - Knowledge and experience with protocols such as MAP, S6a
  • - Familiar with an RSP architecture and experience operating it
  • - Knowledge in scripting and have basic programming skills.
  • - Experience with protocol analyzer tools like Wireshark, Astelia, and ability to use them to troubleshoot networks errors/problems for the mentioned protocols
  • - Experience with ETSI NFV architecture and solutions
  • - Familiar with MVNO/MVNE/MVNA architecture(s) and landscape
Benefits
  • **What we offer?**
  • - **CLT contract** — enjoy job stability and reliable benefits that value your work
  • - **Quarterly performance bonuses **to reward your hard work and achievements
  • - **Meal allowance paid into Caju card** — R$100 per working day
  • - **Health insurance with SulAmérica **— 50% covered by the company
  • - **Daycare allowance **provided to mothers with children under 3 years old — R$500 per month per child
  • - Kickstart your journey with an exciting welcome **onboarding trip to one of our European offices** (Lisbon or Berlin)!**

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
IREG testingroaming testingsignaling protocolsSS7DiameterSIPTAP file validationscriptingprotocol analysis3GPP standards
Soft skills
troubleshootingcoordinationcommunicationrelationship managementdocumentation managementperformance monitoringproblem-solvingteam collaborationanalytical skillsquality assurance