Jason Liu Email & Phone Number

San Francisco, California, Us

• Merchant Finance & Tax Platform Team. Merchants' most trusted business partner by issuing accurate, consistent, and transparent payments and delivering financial products.• Enhanced the overall reliability of the Tax Platform through the implementation of automated Anomaly Detection, CI/CD optimization, and the adoption of a new testing framework.• Improving tax accuracy on multi-million transactions daily and streamlining the reconciliation and reporting process to ensure a transparent and seamless experience for our customers within the DoorDash platform.• Mentored junior engineers by providing technical guidance, conducting code & design reviews, and facilitating skill development, leading to improved team performance and individual growth.

San Francisco, California, Us

• Collaborated with 5+ cross-functional teams yearly to oversee the development of 8+ T0/T1 core products spanning finance, tax, and reconciliation.• Authored 50+ internal Wikis encompassing technical guides, how-to manuals, and operational playbooks such as on-call and deployment procedures.• Conducted penetration tests as a personal initiative, identified critical security flaws, led root cause analyses, and aided in remediation efforts for 4+ teams reliant on the affected systems.• Mentored interns, guiding them to effectively transition from academic knowledge to practical industry skills, resulting in the successful completion of their internships.

San Francisco, California, Us

• Joined Merchant Finance Platform Team as a founding member and built the platform from the ground.• Orchestrated the transition from a monolithic codebase to a microservices architecture, systematically decoupling dependencies, translating and relocating code, and executing extensive experimentation, culminating in a successful migration spanning 1.5 years.• Achieved stringent financial compliance requirements for IPO approval, resolving critical issues such as bug fixes and historical transaction reconciliation with precision and efficacy.

Berkeley, Ca, Us

• Developed and deployed interactive Python tutorials using Jupyter Notebooks, enabling real-time collaboration between students and resulting in a 40% increase in student engagement• Architected and implemented a secure student portal using Flask Framework, featuring SSO authentication, role-based access control, and personalized dashboards serving 500+ active users• Led security assessment initiatives including penetration testing, identifying and patching 3 critical vulnerabilities before deployment.

Berkeley, Ca, Us

• Led weekly Java programming lectures and interactive Q&A sessions for 50+ students, maintaining a 95% attendance rate across 9 weekly contact hours• Designed and delivered a comprehensive curriculum covering data structures, algorithms, and dynamic programming, resulting in an 85% average improvement in student assessment scores• Mentored 40+ students through hands-on labs and projects, providing detailed code reviews and personalized feedback that helped achieve a 90% project completion rate

Berkeley, Ca, Us

• Secured 1st place in Cisco API Challenge at CalHacks 5.0 (UC Berkeley) from among 1500+ participants for developing an AI-powered library occupancy monitoring system• Engineered a computer vision-based solution using ImageAI, OpenCV, and YOLO3 to achieve 95% accuracy in real-time detection of library occupancy and seating availability• Architected an end-to-end data pipeline integrating real-time occupancy analytics with a ChatBot system.• Developed a ChatBot using Cisco WebEx API and NLP, enabling automated seat availability notifications and reducing the estimated student wait times by 70%