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.
• 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%