General informationlocation: torre diana (mexico city)work mode: hybrid – 3 days onsite per weekrole objectivedesign 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 responsibilitiesgather 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).deliverablesmultivendor architecture design documents (pgw, pcrf, ocs)inventory of commercial offersmultivendor equivalency matrix (features/parameters/commands)migration and rollback planstest plans and evidencestandard configuration procedures (templates, checklists, change control)operations and troubleshooting guidetechnical requirements (must-have)7+ years in epc / mobile core; 3+ years as technical lead / smeproven experience with pgw and pcrf in at least one vendor:cisco, nokia, ericsson, oraclelte / 5g technologies and ims systemsprotocols and interfaces:s5/s8, s11, gx, gy, systrong knowledge of:qos (qci/arp), bearers, session managementnat / cgnat, ipv4 / ipv6integration and troubleshooting with ocs (online charging)nice-to-haveautomation / standardization (scripting, templates, ansible, python)educationdegree in telecommunications, electronics, systems engineering, or related fieldvendor certifications (cisco/nokia/ericsson/oracle) are a pluskey protocolslte: s5/s8, s11, sgi5g: n4, n6, n11, n7, nchfpolicy & charging: gx (pcrf), gy (ocs), syip/networking: ipv4/ipv6, nat/cgnat, dnstoolspacket capture and analysis (pcap/wireshark), logs/kpi analysisviavi, prime, grafana(nice to have) scripting/automation (python, ansible)skillsnetwork design and architecturetroubleshooting and analytical thinkingleadership and proactivityteamwork and effective communicationdecision-makingcore responsibility summarylead 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.