ABOUT M800 LIMITED

M800 Limited is a leading global communications service provider headquartered in Hong Kong. Leveraging our robust global network infrastructure and innovative cloud CPaaS (Communication Platform as a Service) solutions, we deliver high-reliability voice, messaging, and telecom solutions to enterprises, carriers, and partners worldwide. At M800, we combine technological excellence with operational agility to drive continuous international growth. We offer a fast-paced, collaborative, and multicultural environment where talented professionals thrive.

ROLE SUMMARY

We are seeking a proactive, meticulous, and analytical Billing Assistant to join our Business Operation department in Hong Kong (Kowloon Bay). Reporting to the Billing Supervisor / Business Operation Manager, you will be responsible for rate management across IDD Voice and SMS services, carrier reconciliation, CDR traffic comparisons, discrepancy tracking, and billing database maintenance. This role is ideal for candidates with strong numerical aptitude and attention to detail looking to build a long-term operational career in global telecommunications and CPaaS.

KEY RESPONSIBILITIES

• Rate Management & Data Entry: Ensure prompt and accurate entry and updating of carrier buy and sell rate sheets for international voice (IDD), SMS messaging, and related telecom/CPaaS services in the billing system.

• CDR & Statement Reconciliation: Assist in collecting, organizing, and verifying carrier monthly billing statements and Call Detail Records (CDR); perform rigorous traffic volume and tariff comparisons against internal records.

• Discrepancy & Dispute Handling: Identify and investigate billing differences and carrier settlement discrepancies; record and track dispute items systematically, and escalate findings to Business Operation and Commercial Managers for timely alignment and negotiation.

• System Codes & Routing Table Maintenance: Assist in managing and maintaining the billing system database, including destination code tables, dial-code/number prefix routing mapping tables, and historical rate effective dates.

• Documentation & Settlement Reporting: Assist the Billing Supervisor in archiving, indexing, and filing daily billing vouchers and settlement documentation; prepare basic monthly settlement and reconciliation reports.

• Cross-Functional Operations: Collaborate closely with Sales, Routing/Carrier Relations, Network Operations, and Finance teams to ensure smooth end-of-month billing cycles and revenue assurance.

• System Support & Continuous Optimization: Participate in User Acceptance Testing (UAT) for billing platform enhancements and contribute to streamlining operational workflows for higher efficiency.

REQUIREMENTS & QUALIFICATIONS

• Education: Higher Diploma or Bachelor's Degree in Business Administration, Accounting, Finance, Information Systems, Logistics/Supply Chain, Operations Management, or related disciplines.

• Experience: 1–2 years of experience in telecom billing, carrier settlement, data entry, operations support, or accounting. Detail-oriented fresh graduates with strong numerical sense are also welcome.

• Industry Knowledge: Prior experience in telecommunications, CPaaS/SMS aggregators, ISP, or international trading/clearing operations is an advantage.

• Technical & MS Excel Skills: Strong proficiency in Microsoft Excel (e.g., VLOOKUP, Pivot Tables, SUMIFS, Text/Data functions) for handling and reconciling large volumes of CDR logs and rate sheets. Exposure to billing platforms or ERP software is a plus.

• Analytical & Problem Solving: High degree of accuracy, keen numerical perception, and patience in discrepancy tracking and tariff comparison.

• Languages: Good command of written and spoken English and Chinese (Cantonese and Putonghua) to communicate effectively with internal teams and external global carriers.

• Work Attitude: Self-motivated, responsible, strong sense of ownership, and capable of working effectively under monthly billing cut-off deadlines.

WHAT WE OFFER

• Competitive remuneration package with performance-based discretionary bonus

• 5-day work week

• Comprehensive Medical and Dental insurance coverage upon completion of probation

• Dynamic, open, and multicultural working environment in Kowloon Bay