Hongjun Liu

Cloud Multi-Tenant Resource Scheduling: Architected and managed data encryption solutions for provincial government cloud tenants. Designed stable, reliable, and efficient encryption resource scheduling mechanisms to ensure high availability for complex multi-tenant cloud environments. • Compliance & Technical Support: Guided the technical transformation of legacy government systems to meet stringent national cybersecurity laws, ensuring seamless integration of cryptographic modules.

• HSM Integration: Optimized encryption for financial clients, eliminating bottlenecks in high-throughput networks. • Core Engine R&D: Led development of robust C/C++ underlying encryption engines. Resolved complex protocol and driver adaptation issues. • Defensive Arch: Built scalable security rule engines ensuring regulatory compliance with microsecond-level response.

• Deadlock Prevention: Led C/Linux dev for PCI crypto cards. Built resource scheduling & locking algorithms, ensuring absolute deadlock prevention & auto-unlock recovery. • High-Concurrency FEP: Built C-based Front-End Processors handling massive ATM/POS traffic with low-latency routing. • ETC Crypto: Engineered core key management & data encryption workflows. • TCP/IP Sockets: Resolved TCP sticky/half-packet fragmentation & designed fail-fast payload validation.