William Hung — Senior Backend Engineer

Creative team backend engineer building AI-powered creative services, video generation pipelines, performance analytics, and reliability systems for the advertising platform.

Key Achievements:

• Built a greenfield AI creative-decision microservice (FastAPI, 4,300 lines, 3 repos) with a content-aware crop and fill-color engine that unions 4 CV/ML detectors, achieving 100% crop content-safety on a 140-sample benchmark with zero important-area cuts.
• Delivered dynamic video ads for 3 Asian markets within single sprints, lifting CTR from 0.2% to 0.8% (4x) on the first campaign. A follow-up multi-language personalized video pipeline forecasts a 6x CTR uplift.
• Migrated the creative-performance data pipeline from scheduled batch to event-driven architecture, cutting trigger latency from 47 min to 19 min and data freshness from hours to seconds. Pipeline runs dropped 40 to 60%.
• Raised screenshot-capture pass rate from 35% to 100% across 3 rounds of hardening. Shipped OOM backpressure (19/19 captures lost to 0), accelerated a GraphQL endpoint p50 3.95x, and cut browser-rendering p50 8x (48.4 s to 6.0 s).
• Drove a creative asset management platform from PRD wireframe to production, designing the backend API layer (46 files, 3 DB migrations) so 4 frontend engineers could develop in parallel within 2 sprints.
• Cut infrastructure cost by 35% and deploy time by 16% via VM-to-Kubernetes migration. Migrated Kafka producers plaintext to SSL across 4 repos and 3 teams ahead of a hard cutoff. Closed 4 CVEs via Go 1.20 to 1.25 upgrade.
• Built an internal AI-tooling plugin marketplace adopted by the team mid-cycle. Doubled story points (36 to 75) via a self-built AI iteration workflow. Held knowledge-sharing sessions on AI-driven development practices.

Developed enterprise cloud security products (V1FS, V1CAM) for multi-cloud environments across AWS, Azure, GCP, and Alibaba Cloud, focusing on cloud asset security and event-driven bucket protection strategies.

Key Achievements:

• Architected robust authentication system using OIDC with least privilege principles, enhancing security posture for customer access management.
• Resolved AWS CloudFormation limits by implementing serverless compose framework, reducing deployment time by 66% while maintaining infrastructure stability.
• Developed comprehensive file security solutions including cloud-based V1FSS and V1FS SDK enabling secure file scanning for both cloud and on-premises environments.
• Contributed to multi-cloud development across AWS, Azure, GCP, and Alibaba Cloud using Go, Node.js, and Python.
• Implemented modern DevOps practices using Jenkins, GitHub Actions, Docker, Kubernetes, and Terraform for rapid feature deployment.
• Obtained AWS Solutions Architect Associate certification (SAA-C03).

Reference:

V1FS, V1CAM, OIDC, CloudFormation limit, Serverless Compose, V1FSS, V1FS SDK, SAA-C03

Designed and developed cloud technology learning solutions focusing on AWS and Azure platforms, featuring interactive training environments and assessment capabilities.

Key Achievements:

• Architected cloud-native learning platform integrating mind-map visualization and hands-on labs for cloud certification preparation.
• Delivered technical presentation on computer vision solutions at company's AI Conference.

Reference:

eCloudValley Official, Conference Link

Key Achievements:

• Participated in 5, 6G research & Blood Pressure Patent project.

Reference:

Academia Sinica Official, Blood Pressure Patent

Key Achievements:

• Participated in 5G research & won the R&D Nationwide competition 1st place award.

Reference:

QCT Website, R&D 1st place award news