Mobile Money Maintenace Enginee

Job Responsibilities
1. Responsible for Mobile Money system and service maintenance including monitoring, routine health check, alarm and issue handling, risk identification and mitigation, customer requirements support, new service test and rollout, etc
2. Strictly comply with network security requirements and ensure zero violations;
3. Make full use of professional knowledge and mobilize relevant support teams to proactively solve customer problems;
4. Fully understand customer requirements and complete the delivery with quality and quantity within the scope of the contract;
5. Complete maintenance tasks assigned by team leader on time and output high-quality deliverables;
6. Continuously present service value and improve customer satisfaction;
7. Communicate efficiently and proactively with team members and customers.
Skills Required
1. Familiar with the overall architecture of the wallet payment platform, and proficient in core modules such as accounts, transaction engine, payment gateway, clearing and reconciliation, accounting engine, asynchronous notifications, and fund suspense. Understand the complete business process of top-up, consumption, refund, withdrawal, reconciliation, and clearing.
2. Proficient in using Linux, capable of locating transaction-related issues through logs, traces, databases, and message queues. Familiar with Oracle/MySQL, and able to perform basic SQL checks on transaction records, balances, and batch data.
3. Understand payment channels, API callbacks, idempotence, anti-replay mechanisms, and transaction compensation mechanisms. Able to independently troubleshoot complex financial issues such as unbalanced reconciliation, overages or shortages, abnormal transaction statuses, and lost callbacks.
4. Familiar with end-of-day batch processing, clearing file generation, and reconciliation processes. Understand the business logic and operational boundaries of fund discrepancies, suspense, and adjustments, and have a strong awareness of financial risk identification.
5. Familiar with high availability, active/standby, disaster recovery, and backup and recovery principles. Master the processes for changes, emergency handling, and fault resolution, and clearly understand the operational red lines of the fund system, such as "auditability, roll-back capability, and traceability."
6. Able to accept 7×24 shift work, nighttime cutovers, and major event support. Possess the ability to collaborate across teams, produce fault reports, and contribute to case knowledge sharing.