Aya Khaled Mohamed

• Delivered PaCo technical solutions based on Low-Level Design (LLD).
• Prepared and validated instantiation templates, MOPs, and data fill sheets.
• Performed onboarding, deployment, integration, and configuration of PaCo nodes.
• Executed system and functional ATP test cases and documented results.
• Troubleshot deployment, integration, and ATP issues with internal and customer teams.
• Supported Packet Core services migration activities.

Key Projects:

Vivacom Bulgaria (United Group) (~6M subscribers)
- Supported Packet Core services migration activities.
- Ensured service continuity during migration phases.
- Performed system validation and troubleshooting.
- Prepared MOPs and executed ATP testing.

Telemach Slovenia (United Group) (~700K subscribers)
- Prepared MOPs and instantiation templates.
- Executed system and functional ATP test cases.
- Validated system functionality and performance.
- Troubleshot integration issues.

Telemach Croatia (United Group) (~1M subscribers)
- Supported deployment and migration of Packet Core services.
- Performed integration and configuration of PaCo nodes.
- Executed system and functional ATP test cases.
- Assisted in troubleshooting integration and deployment issues.

O2 Czech Republic (~5.9M subscribers)
- Deployed and integrated PaCo nodes based on LLD.
- Executed system and functional ATP test cases.
- Performed troubleshooting during integration and testing phases.
- Coordinated with internal and customer teams to ensure successful delivery.

• Handled high-priority (VIP) customer technical cases.
• Supported CUPS-related cases and configuration optimization.
• Managed capacity and licensing for MME and PGW nodes.
• Worked on offloading scripts for MME, PGW.
• Analyzed KPIs across MME, PGW, CG, OCS, and PCRF nodes.
• Performed health checks and prepared RCA reports for incidents.
• Supported 5G and 5G NSA troubleshooting cases.

• Gained hands-on experience with Huawei Packet Core nodes and interfaces.
• Supported operation, maintenance, troubleshooting, and configuration activities.
• Studied PS call flows, CSFB, SRVCC, and VoLTE.
• Worked with DPI concepts and troubleshooting (L3/L7 rules, charging, header enrichment).
• Performed user trace analysis, Wireshark analysis, and CDR analysis.
• Built knowledge in routing, NFV, and cloud vEPC environments.