# Sandra Yu > Staff Software Engineer at Twilio Location: San Francisco Bay Area, United States Profile: https://flows.cv/sandrayu Extensive experience in software development Specialties: JAVA, Python, JavaScript, C/C++, Visual C++, SQL, Perl, HTML, XML Sybase, Oracle SNMP, TCP/IP, VLAN, MLAG, EAPS ## Work Experience ### Staff Software Engineer @ Twilio Jan 2022 – Present | United States ### Senior Software Engineer @ Boku Identity Jan 2020 – Jan 2022 | San Francisco Bay Area ### Technical Lead @ Cisco Jan 2018 – Jan 2020 Group based policy analytics is an application providing visibility into network traffic, illustrating source and destination nodes, showing a graphical representation of these nodes with the NetFlow record as the relationship between them. -- Acted as Scrum Master to facilitate sprint planning, daily scrums. Helped team focus on project timeline and continuous delivery of features -- Designed, developed and fine tuned APIs for the network visibility application ### Technical Lead @ Cisco Jan 2017 – Jan 2018 Manufacturer Usage Description (MUD) is to solve device classification problem in the enterprise network. Purpose of MUD is to have a role for IoT device manufacturers in solving IoT security problem. -- Designed and implemented a MUD solution in ISE to classify IoT devices and to limit device access intended by the manufacturer ### Technical Leader @ Cisco Jan 2011 – Jan 2017 Cisco Identity Services Engine (ISE) is an identity and access control policy platform that enables enterprises to enforce compliance, enhance infrastructure security and streamline their service operations. -- Architect and lead team across multiple geographies to re-build distributed web-based Guest service -- Create the backend infrastructure of the setup assistant to simplify the complex configuration process which includes, but not limited to, the AAA, posture, profiling, guest management and BYOD features. ### Principal Software Engineer @ Extreme Networks Jan 2000 – Jan 2011 Designed and developed a Network Management system aiming at Enterprise, Service provider and Data Center markets. ### Senior Software Engineer @ Adicom Wireless Jan 1997 – Jan 2000 Designed and developed a Network Management System for a network of CDMA wireless local loop system ## Education ### University of Toronto ## Contact & Social - LinkedIn: https://linkedin.com/in/sandra-yu-1169b21 --- Source: https://flows.cv/sandrayu JSON Resume: https://flows.cv/sandrayu/resume.json Last updated: 2026-04-12