General Information
* Location: Torre Diana (Mexico City)
* Work Mode: Hybrid – 3 days onsite per week
Role Objective
Design and execute the phased migration and coexistence of commercial offers from the current PGW/PCRF platform to a new multivendor solution (vendors under selection), ensuring service continuity and end-to-end integration with network elements, including OCS (charging) and roaming.
Additionally, define and document the operational process for the design, configuration, testing, and deployment of future commercial offers in a multivendor environment.
Key Responsibilities
* Gather and document the baseline configuration of current commercial offers in PGW and PCRF (APNs, rulebases, ruledefs, throttling policies, etc.).
* Define target multivendor architecture (coexistence, segmentation by APN/offer/region).
* Define interaction models: PCRF ↔ PGW (Gx); PGW ↔ OCS (Gy); PCRF ↔ OCS (Sy)
* Identify dependencies and integrations across PGW, PCRF, and OCS in a multivendor setup.
* Build a configuration mapping/migration matrix between current and new vendors.
* Design and implement phased migration plan with success criteria and rollback strategy.
* Define and execute end-to-end testing plans for commercial offers.
* Validate roaming scenarios (Cobex, Extended Home, International Roaming).
* Design a standardized offer template portable across vendors.
* Produce knowledge transfer materials (documentation, checklists, troubleshooting guides, KPIs, logs, traces).
Deliverables
* Multivendor architecture design documents (PGW, PCRF, OCS)
* Inventory of commercial offers
* Multivendor equivalency matrix (features/parameters/commands)
* Migration and rollback plans
* Test plans and evidence
* Standard configuration procedures (templates, checklists, change control)
* Operations and troubleshooting guide
Technical Requirements (Must-Have)
* 7+ years in EPC / Mobile Core; 3+ years as Technical Lead / SME
* Proven experience with PGW and PCRF in at least one vendor:
* Cisco, Nokia, Ericsson, Oracle
* LTE / 5G technologies and IMS systems
* Protocols and interfaces:
* S5/S8, S11, Gx, Gy, Sy
* Strong knowledge of:
* QoS (QCI/ARP), bearers, session management
* NAT / CGNAT, IPv4 / IPv6
* Integration and troubleshooting with OCS (online charging)
Nice-to-Have
* Automation / standardization (scripting, templates, Ansible, Python)
Education
* Degree in Telecommunications, Electronics, Systems Engineering, or related field
* Vendor certifications (Cisco/Nokia/Ericsson/Oracle) are a plus
Key Protocols
* LTE: S5/S8, S11, SGi
* 5G: N4, N6, N11, N7, Nchf
* Policy & Charging: Gx (PCRF), Gy (OCS), Sy
* IP/Networking: IPv4/IPv6, NAT/CGNAT, DNS
Tools
* Packet capture and analysis (pcap/Wireshark), logs/KPI analysis
* Viavi, Prime, Grafana
* (Nice to have) scripting/automation (Python, Ansible)
Skills
* Network design and architecture
* Troubleshooting and analytical thinking
* Leadership and proactivity
* Teamwork and effective communication
* Decision-making
Core Responsibility Summary
Lead the migration and coexistence of commercial offers at PGW/PCRF level toward a multivendor solution, ensuring service continuity and establishing a standardized operational process for future offers aligned with business needs.