Hello there, I'm Kai Yin!

Kai-Yin Hung

I build software that powers real products. Currently shipping AI/ML stacks from neural network to SoC at Upbeat Technology.

If you'd like the structured view, here's my resume .

Below is the narrative version for why I keep betting on fast-moving ventures and what I've shipped along the way.

Mar 12, 2026除了薪水,畢業後選工作更該思考的幾個問題Feb 10, 2026整體大於部分之和Feb 8, 2026豐漁季 - 初魚 鮨Feb 7, 2026咖啡的四個階段:從品咖啡回到喝咖啡Feb 5, 2026世界奠基以來隱而未現之事|讀後感(中譯)Jan 18, 2026AI/ML Compiler & Runtime:從硬體 Mismatch 開始的 AI/ML Stack 重構之旅Jan 9, 2026Multi-NPU Scaling for Transformer Models:機會與限制Jan 6, 2026從 Vibe Coding 到商業上線:走完 doudou EOR 落地Jan 4, 2026From Transformer to Chip:將 NanoGPT 落地到 Ultra Low Power RISC-V 的工程歷程Jan 3, 20262025 年度,啤酒回顧Jan 2, 2026初釀啤酒隨筆Dec 25, 2025台北大縱走Nov 8, 2025一一,觀影心得Oct 23, 2025RISC-V Summit 幕後Oct 15, 2025在 ChatGPT 之前,AI 是怎麼做出決策的?Jan 5, 20252024 回顧,阿布達比及杜拜Oct 2, 2024颱風預測Oct 1, 2024語音驗證:Speaker VerificationSep 30, 2024目前用什麼:軟體及服務篇Sep 27, 2024阿比特的人們Sep 26, 2024前進阿布達比Sep 21, 2024當 iPhone 失色,皮卡丘發光:信義 A13Sep 20, 2024醫生你是不是老了:拔智齒Jun 15, 2024碩士班畢業Mar 12, 2026除了薪水,畢業後選工作更該思考的幾個問題Feb 10, 2026整體大於部分之和Feb 8, 2026豐漁季 - 初魚 鮨Feb 7, 2026咖啡的四個階段:從品咖啡回到喝咖啡Feb 5, 2026世界奠基以來隱而未現之事|讀後感(中譯)Jan 18, 2026AI/ML Compiler & Runtime:從硬體 Mismatch 開始的 AI/ML Stack 重構之旅Jan 9, 2026Multi-NPU Scaling for Transformer Models:機會與限制Jan 6, 2026從 Vibe Coding 到商業上線:走完 doudou EOR 落地Jan 4, 2026From Transformer to Chip:將 NanoGPT 落地到 Ultra Low Power RISC-V 的工程歷程Jan 3, 20262025 年度,啤酒回顧Jan 2, 2026初釀啤酒隨筆Dec 25, 2025台北大縱走Nov 8, 2025一一,觀影心得Oct 23, 2025RISC-V Summit 幕後Oct 15, 2025在 ChatGPT 之前,AI 是怎麼做出決策的?Jan 5, 20252024 回顧,阿布達比及杜拜Oct 2, 2024颱風預測Oct 1, 2024語音驗證:Speaker VerificationSep 30, 2024目前用什麼:軟體及服務篇Sep 27, 2024阿比特的人們Sep 26, 2024前進阿布達比Sep 21, 2024當 iPhone 失色,皮卡丘發光:信義 A13Sep 20, 2024醫生你是不是老了:拔智齒Jun 15, 2024碩士班畢業

Biography

Growing up in Taichung, I was always curious about how things worked—and what lay beyond what I could see. That curiosity deepened when I discovered Silicon Valley (2014–2019). The show captured something I hadn't seen before: people just building things. Lots of things. From messy apartments to half-baked startups. They didn't always succeed, but they kept shipping. That moment shifted something for me. If they could do it, why couldn't I?

But I also noticed something else. Taiwan's hardware semiconductor industry was world-class - TSMC, Delta Electronics, MediaTek, Foxconn, the whole ecosystem. Yet our software story still felt incomplete. I decided I wanted to be part of bridging that gap: connecting Taiwan's hardware strength with software innovation to build products that actually matter.

National Yang Ming Chiao Tung University gave me the foundation. B.Eng. and M.Eng. in Electrical & Computer Engineering. More importantly, those years taught me how to keep learning. I discovered my biggest strength wasn't any particular technology—it was slowing down, looking deeper, and finding patterns in messy problems. That mindset still guides how I work today.

My internships at ITRI and GallopWave were my first chance to connect theory with reality. I built motion-forecasting networks for real local Taiwan's traffic. I designed 3D point-cloud pipelines for L4/L5 autonomous vehicles. I saw how good engineering isn't about perfect theory—it's about making things work reliably when real data gets messy and unpredictable.

At InQuartik, a patent-intelligence SaaS company, I shifted from research robotics to products that real users depended on. This was terrifying at first. Someone's business, someone's payroll, someone's actual problem if my code broke. I learned about maintainable architecture. CI/CD. Collaborating with product teams who needed features yesterday. I also learned how fast market needs change what we build—and how quickly we must adapt.

Now I'm at Upbeat Technology, a venture team building RISC-V SoCs with dedicated AI accelerators. We're designing neural network stacks from research to production silicon. Since I joined, I've watched the team grow, our product move from R&D to production, and revenue multiply. Beyond the technical work, I'm learning something new: what it actually takes to turn an idea into a company.

Career Timeline

Roles that shaped how I build software — from research labs to real-world impact.

  1. Software Engineer @ Upbeat Technology
    Jul 2024 → Present (1y 8m)
    • Shipped AI compiler stack to production silicon
    • Scaled neural network models to run efficiently on resource-constrained SoCs
  2. Software Engineer Intern @ InQuartik
    Jan 2022 → Dec 2023 (1y 11m)
    • Cut manual marketing workload by 60% through HubSpot & Apollo CRM automation
    • Built multi-tenant Vue + Spring MVC features for patent analytics SaaS
  3. Software Engineer Intern @ Industrial Technology Research Institute (ITRI)
    Oct 2021 → Oct 2022 (1y)
    • Built motion-forecasting networks and 3D point-cloud pipelines for Taiwan's autonomous vehicle ecosystem
  4. Software Engineer Intern @ GallopWave
    Jun 2021 → Sep 2021 (3m)
    • Delivered C++ testing harness for embedded visual-inertial odometry systems
    • Validated across IMU/Camera/GPS configurations for real-time robotics applications

Selected Builds

A few products and projects that capture what I like to ship.

  1. House168

    2024 → Now

    4,000+ real estate agents and agencies depend on this platform. Delivered full-stack solutions.

    • Full-stack
    • Data Engineering
  2. doudou.jobs

    2025 → Now

    Singapore's Employer of Record brand needed an ERP that actually works. Built full-stack system serving HRNetGroup's doudou marketplace.

    • Full-stack
    • System Design
    • ERP
  3. Motion Prediction on Waymo Open Dataset

    2022

    8th place globally on Waymo Open Dataset—multi-agent trajectory forecasting for autonomous vehicles. Honored to be part of the team with my senior lab mentor, which greatly enriched my research experience.

    • Autonomous Driving
    • Waymo
    • Deep Learning
  4. Multi-Modal Motion Prediction using Temporal Ensembling with Learning-based Aggregation

    2024

    Open source IROS 2024 paper codebase on multi-modal motion prediction for autonomous vehicles.

    • Computer Vision
    • Deep Learning
    • PyTorch
    • Motion Prediction
    • L4/L5 Autonomous Vehicles
    • Argoverse 2 Dataset