Chao Zan

Successfully deployed and commissioned fleet networks of autonomous floor care robots (L3, L4, L50, SP50) across diverse enterprise environments, including healthcare facilities, international airports, universities, and retail chains. Managed end-to-end site localization, utilizing LiDAR and Follow-Me technologies to generate, segment, and optimize high-precision 2D/3D maps, define virtual workstations, and set up automated scheduling. Overcame complex infrastructure constraints, troubleshooting network firewalls and enterprise Wi-Fi restrictions by deploying dedicated cellular configurations to guarantee 100% cloud connectivity via Tars/AWS management platforms. Diagnosed and repaired complex electro-mechanical system failures, resolving issues across ECUs, MCUs, ACUs, depth cameras, LiDAR sensors, brush transmission assemblies, and power management units. Isolated and resolved severe software/firmware anomalies, successfully mitigating critical OTA update stalls, system initialization loops, localization drift caused by high-glare environments, and cloud telemetry mismatches. Performed Root Cause Analysis (RCA) on mechanical components, identifying structural vulnerabilities in legacy chassis/wheels, redesigning reverse-thread fastener implementations, and engineering field modifications to improve water-clearance and suction performance. Developed and delivered comprehensive technical training programs for regional distribution partners and dealer technicians, accelerating third-party maintenance capabilities and deployment velocity. Educated end-user operations teams and hospital/stadium supervisors on daily robotic maintenance, digital app workflows, and back-end cloud fleet management operations. Acted as the key technical liaison between field operations, B2B clients, and international R&D engineering teams; documented product issues, managed warranty parts returns, and consolidated critical client feedback to drive next-generation product roadmaps.

• Spearheaded the development of a next-gen web portal using Angular 17, reducing page load time by 35%. • Engineered i18n and time zone support, enabling seamless global access for users across 8 countries. • Collaborated with UX teams to redesign the interface, improving user retention by 20% through intuitive navigation. • The resulting project improves the web portal's stability, scalability, and readiness for international expansion.

• Automated 85% of regression testing using Selenium, reducing manual effort by 200+ hours/month. • Designed a failure screenshot feature that accelerated debugging by 50%, resolving 10+ critical bugs pre-launch. • Led load-testing initiatives simulating 10K concurrent users, and monitoring server response time. • Authored 150+ test cases, achieving 95% test coverage and ensuring zero critical post-release defects.

• Built 10+ customer-facing features with Angular/NgRx, enhancing transaction processing speed by 40%. • Improved code reliability by introducing Jest unit tests, maintaining 90%+ coverage across 50+ modules. • Partnered in Agile sprints, resolving 15+ high-priority Jira tickets and reducing backlog by 30%.