Taipei, Taipei City, Taiwan
System Software Engineer with 4+ years of experience in low-level systems, performance optimization, and Linux-based infrastructure. My work focuses on building and optimizing high-performance system software using C/C++ with deep knowledge of CPU architecture, SIMD, and Linux internals. I actively contribute to open-source performance-critical projects including simdjson, sse2neon, simde, and semu. My contributions include SIMD optimization work and improvements such as CRC32-C conversion enhancements. Previously, I worked across infrastructure, networking, and cloud platforms where I: • Optimized system-level algorithms to improve latency and throughput • Patched Linux kernel drivers and networking components • Built infrastructure and automation tools for distributed systems • Diagnosed low-level system behavior including USB traffic and virtualization environments Recent work includes improving Valkey clustering performance through CRC16 optimization using multi-byte lookup tables. I’m particularly interested in systems engineering challenges involving: • Performance optimization • CPU architecture and SIMD • Linux kernel and drivers • Distributed infrastructure • Virtualization and networking Open to system software, performance engineering, and infrastructure roles.
- Shipped 5 core Linux and macOS enterprise EDR features, driving a 10%+ increase in user engagement.
1. Implement VirtIO sound playback device on semu, a minimalist RISC-V system emulator capable of running Linux kernel. https://github.com/sysprog21/semu 2. Add document and tests of C++20 std::ranges support of DOM API on simdjson, a C++ library parsing GBs of JSON per second. https://github.com/simdjson/simdjson 3. Optimize Valkey CRC16 hashing with a multi-byte lookup-table algorithm, improving cluster-mode RPS and latency by 2% in production benchmarks. https://github.com/valkey-io/valkey 4. Create number-vault with Antigravity to let user to record and query number combinations. https://cuda-chen.github.io/number-vault/ 5. Implement VirtIO sound device capture for guest OS audio recording. https://github.com/sysprog21/semu/pull/115 6. Antigravity Project — Real-Time Accelerometer Analytics - Built a high-performance real-time analytics dashboard using FastAPI and HTML5 Canvas to stream and process 100Hz 3-axis accelerometer data, featuring zero-latency DSP filtering and a live FFT spectrogram for vibration analysis. - https://github.com/Cuda-Chen/qsis_renew 7. Resolved catastrophic backtracking in file-scanning regex, accelerating pattern matching throughput by 50%+. 8. Restored 100% GTest reliability by engineering chroot isolation via C++17 RAII idioms.
• Delivered 10 features for GSLB/virtualization products with a collaborative 6‑person team, improving system efficiency by 10%. • Patched Intel i40e driver to enable dynamic Ethernet port control across 10k+ devices. • Extended Linux ifalias to manage port metadata, improving maintainability and tracking for 10+ ports. • Built user login feature with RADIUS, NSS, and PAM, enabling secure cross‑application authentication for 100+ users.
• Partnered with CTO to deliver 3 Shopper Connect enhancements, increasing user engagement by 10%. • Implemented heartbeat mechanism, resolving cellular disconnects for 500+ users. • Analyzed USB traffic to enable cloud‑based POS/printer status monitoring.
Freelance Software Engineer 1. Make contribution to sse2neon, simdjson, and Linux Kernel.