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.