Wei (David) W. Email & Phone Number

Cambridge, MA, US

• System Software Engineering for media delivery.We Make the Internet Fast,Reliable, and Secure from Edge. Our comprehensive solutions built the globally distributed intelligent platform with more than 200,000 servers.
• Work on multi-thread store access for partial object cache of large content, which brings significant performance improvement.
• Add distributed overload control based on traffic flow and load of edge servers.
• Enhance quick retry system to fail over to alternate paths to mitigate re-buffering for end users.

Milpitas, CA, US

Network Security software development based on Linux. Working on software development about application layer security of network security. Included re-assemble free deep packet inspectionfor intrusion detection and prevention (IDP) and system survivability services. Leading development of cloud internal security software working with OpenStack networking.

Espoo, Southern Finland, FI

• Offline Charging System (IeCCF)Played leading role on development of IeCCF for IP Multimedia Subsystem (IMS) and Long Term Evolution (LTE) networks which have hundreds of millions end users. IeCCF as a real-time.
• As a key member in architecture team, led development of numerous features across multiple releases from versions 0.x to 3.x, re-arch the system for scalability, flexibility and performance.
• Troubleshot and effectively provided workaround, short-term, and long-term solutions for complex issues found in IeCCF deployment, as well as FOA and FSA in Verizon, AT&T, SFR, and Belgacom sites.
• Ensured successful IeCCF integration, release upgrades, and Acceptance Test Plans in Verizon, AT&T, SFR, and Belgacom sites, providing comprehensive review and support.

• Online Charging System (Surepay) Served as leader in development of Surepay for IN and IMS networks; launched in international telecom operators including Verizon in USA, Vodafone in Italy, UK, Czech Republic.
• Headed development of multiple features such as SIP calling card, Diameter client simulator.
• Instrumental in producing high-quality system launched throughout USA and Europe.