Test Engineer, Mobile Network Software
CSG
IoTLinuxLuaPerl
Senior Online Charging Engineer – Telecommunications
1GLOBAL
full-time
Posted on:
Origin: • 🇵🇹 Portugal
Visit company websiteJob Level
Senior
Tech Stack
IoTTypeScript
About the role
- Create and maintain charging products, offers and rate plans
- Engineer new charging system solutions and maintain existing ones
- Perform end-to-end project planning and delivery
- Creation and maintenance of technical documentation
- Deploy solutions in lab and production environments
- Create the appropriate visibility of the relevant service KPI's
- Quality control and assurance of offers and rate plans
- Anticipate capacity and performance issues
- Collaborate closely with other teams as well as with external partners
- Contribute towards continuous improvement of the teams’ engineering standards and working methodologies
- Lead end-to-end project deliveries on the Charging area
- Manage scope, timeline, and quality of the technical streams.
- Drive requirements gathering, use case definition, and ensure technical feasibility of the solution.
- Coordinate with solution architects, network core experts, OSS/BSS teams, integrators and vendors.
- Oversee impact analysis, configuration, testing, and deployment of charging/rating logic and integration with network elements (PCRF, DRA, OCS, etc.).
- Ensure compatibility and seamless migration between versions.
- Drive current system and network enhancements/optimizations/decommissions.
- Manage technical risks, issues, and dependencies across system interfaces (e.g., IN, OCS, mediation).
- Own and deliver area reporting, dashboards, and executive summaries to stakeholders.
- Ensure alignment with best practices, change management, security and release control policies.
Requirements
- Extensive engineering experience with Charging services and systems, from commercial and open-source solutions
- Hands on operational and delivery experience with maintenance and implementation of solutions in live and lab environments
- Expertise in mobile services charging (offline, online), using Diameter (Ro, Gy, Gx, Sy). Experience on one or more of these protocols is a plus: CAPv2, CAPv3, SIP, RADIUS, LDAP, and/or Web Service protocols
- Expertise in Online Charging Systems and it's integration with Provisioning and Billing systems
- Expertise in service design related with voice, messaging and data services (including policy and charging control)
- Expertise in IMS architecture, especially with VoWiFi and VoLTE use cases
- Previously integrated mobile services and solutions with offline and online charging systems
- Experience in dedicated service solutions, data only, applicable to enterprise/corporate environments (M2M/IoT solutions and services)
- Experience successfully designing and implementing Rating / Mediation solutions
- Experience in troubleshooting issues related with signaling, provisioning or configuration
- Good understanding on GSM, UMTS, LTE related technologies, systems, and protocols
- Support of real-time charging and policy enforcement for latency-sensitive 5G use cases.
- Previous experience in automation, test, delivery, solution design and capacity management
- Having a degree in Telecom Engineering or Computer Science or equivalent is a big plus
- Design and implementation of charging solutions aligned with 5G core network functions (e.g., SMF, AMF, PCF, CHF).
- Configuration and management of Charging Function (CHF) in the Service-Based Architecture (SBA) environment of 5G.
- Ensuring compliance with 3GPP 5G specifications, particularly for TS 32.255, 32.296, 32.290, 29.522, and others.
- Definition of charging rules, data rating models, and tariff plans for new 5G services (eMBB, URLLC, mMTC).
- Collaboration with policy control (PCF) and subscriber data management (UDM) teams to align charging strategies.
- Contributions to open-source projects is a big plus
- Experience with Network Functions Virtualization is a big plus
- Familiarity with MVNO/MVNE/MVNA architecture(s) and landscape is a big plus
- English proficiency mandatory, other languages are a plus
