Charging and Billing Systems Senior Engineer

Location: Cairo, Egypt

Experience Level: 3 - 5 Years

About the Role

Are you an expert in Huawei CBS looking to take the next step in a high-scale telecom environment? We are seeking a Senior Charging & Billing Systems Engineer to join our dynamic Software Operations team. In this role, you will be responsible for the end-to-end technical management of our convergent billing ecosystem. You will bridge the gap between complex network signaling and financial accuracy, ensuring our rating, charging, and product configurations are optimized for a mission-critical environment.

Key Responsibilities

As a Senior Engineer, you will be instrumental in ensuring the stability, accuracy, and evolution of our CBS platform, including:

• Solution Design: Design and architect robust billing solutions for new telecom products, ensuring seamless service launches.
• System Configuration: Perform hands-on configuration of the product catalog, including complex pricing, rating, discounting, and promotion schemes.
• Troubleshooting & Analysis: Conduct advanced network troubleshooting using PGW traces and signaling analysis (Diameter/SIP) to resolve complex billing discrepancies.
• Integration Management: Manage and optimize the integration between CBS, network charging elements, and mediation systems.
• Performance Optimization: Lead billing performance tuning and system optimization initiatives to ensure high throughput and low latency.
• Revenue Assurance: Execute billing reconciliation and dispute management to maintain financial integrity and minimize revenue leakage.
• Automation & Scripting: Develop advanced Python or Shell scripts to automate billing analysis, data fixes, and routine health audits.

Required Qualifications

• Education: Bachelor's degree in Computer Science, Telecommunication, IT, or a related technical field.
• Experience: 3 to 5 years of professional experience specifically in Charging and Billing systems (CBS/OCS) within the Telecom sector.
• Huawei Expertise: Proven hands-on experience with Huawei Charging and Billing System implementations and backend operations.
• Network Foundations: Solid background in 3GPP/3GPP2 standards and protocols, including DIAMETER, Radius, SS7, SIP, and TCP/IP.
• Charging Architecture: Deep understanding of Online Charging architecture, network flows, and call flows for Voice, Messaging, and Data.
• Database Knowledge: Advanced SQL skills for complex data analysis, financial reporting, and critical data corrections.
• Linux Skills: Intermediate Linux proficiency, including shell scripting and system monitoring in a production environment.

Preferred

• Network Infrastructure: Practical knowledge of Wireless 3G/4G LTE infrastructure and IMS call flows.
• Troubleshooting Tools: Expert-level skill in using Wireshark for signaling traces and CDR verification.
• Certifications: Any relevant Huawei (HCIP/HCIE), Oracle, or Linux (LPIC/RHCE) certifications.