Junjie Cao (Jason Cao)

Specialized in Microsoft Azure ARM and Storage services, providing tier-2/3 support to a global customer base across diverse industries and geographies. Resolved 2+ technical cases daily, consistently ranking in the Top 5 of 40+ engineers based on CSAT. Diagnosed and solved complex deployment issues involving ARM templates, policy enforcement, and data redundancy in cloud environments. Collaborated cross-functionally with internal product teams (Compute, Networking) to triage and resolve escalated cases within SLA. Delivered internal tech talks on development lifecycle, troubleshooting practices, and product-specific deep dives, and contributed to internal documentation to scale knowledge across APAC regions.

Acted as principal engineer in a 6-member team, leading backend service design and development for cloud-native applications. Designed and implemented distributed systems on AWS using ECS for container orchestration, DynamoDB for storage, and SQS/SNS for asynchronous messaging. Built and troubleshooted cloud infrastructure, CI/CD pipelines, and deployment processes. Mentored junior engineers in Java best practices and AWS service adoption across multiple internal projects.

Senior Java Software Engineer on the Absence module within the HCM system, focusing on feature enhancements, defect resolution, and backward compatibility. Collaborated with a distributed Agile team across India and the United States, following Scrum/Sprint practices to deliver stable iterations.