jango

- Led end-to-end architecture design, maintenance, development, and cross-functional communication for the company’s crypto payment and credit risk control systems. - Built risk control infrastructure from scratch, including risk engine, indicator system, and penalty system, enabling full-link integration of key risk events. - Managed multiple risk control services, including gateway, messaging, blocklist, and KYC modules, with ongoing iterative improvements. - Designed and developed identity verification services. - Owned middleware tasks, including assignment, issue tracking, problem-solving, and code standardization. Led root cause analysis for DB failover, developed contingency plans, and implemented monitoring for DB/Redis/RocketMQ/Nacos. - Architected and developed a credit risk strategy engine to support risk control requirements. - Studied blockchain principles and Solidity code to extract address risk data and detect wallet risks.

- Oversaw architecture design, maintenance, development, and business collaboration for the company’s risk control system. - Developed key modules such as real-time indicator calculation and C-end abnormal traffic monitoring. Integrated over 100 business scenarios, preventing risks like bonus abuse, API abuse, account theft, payment fraud, order abandonment, and malicious refunds. - Optimized device fingerprinting and sensitive word algorithms to improve risk identification accuracy. - Enhanced code quality and performance, transitioning the team from Java to Golang, reducing machine costs by nearly half while handling tens of millions of daily events. - Technical highlights: Microservices architecture with Kubernetes CI/CD to ensure high throughput and stability. Complex business logic analysis with tailored risk solutions. Java-to-Golang migration, improving development efficiency and performance. Utilized big data frameworks (Flink, Spark, StarRocks) and middleware (Pulsar, Kafka, ES, MySQL, Redis, MongoDB, Tomcat) for risk analysis. Developed machine learning models with Python scikit-learn for device fingerprinting and integrated AI models for text recognition.

- Designed cluster architecture for data security management platforms and built event processing centers. - Project 1: Data Security Management Platform First multi-tenant cluster project, highly prioritized by leadership. Enabled data asset governance and centralized presentation via EPC (Event Processing Center). Scaled EPC with Kafka cluster ingestion, parallel processing, and ClickHouse cluster storage for high performance and availability. - Project 2: Event Processing Center ELK-like architecture with plugin-based development (input, filter, output interfaces). Supported Kafka, Syslog, ES, and ClickHouse integrations. Optimized performance to achieve 100k events/sec per machine (3KB data).

- Designed, developed, and maintained security systems. - Projects: Automated Firewall: Designed container-aware firewall policies with Zookeeper leader election and real-time updates. Sensitive Content Recognition System: Monitored data leaks via Kafka async communication. Unified Authentication Gateway: Developed auth features with Zuul, load balancing, and monitoring.

- Developed P2P lending systems and microservices. - Projects: Money Orange P2P: Kafka async processing, Zookeeper locks, Redis for anti-overkill, DevOps with Consul and JWT. Huadian Loan: Payment, lending, and risk control modules with Consul and Kafka.

Led small loan platform development with finance, accounting, and bank integration modules.

Developed e-commerce data scraping platforms and financial software.