Student · Data Science · Portfolio

Diyuan Deng

B.Sc., Data Science and Big Data Technology (CUHK-Shenzhen) · Embodied AI, LLM Inference, Applied ML

About

Undergraduate focused on embodied AI / VLA data, enterprise LLM serving (SGLang, parallelism, quantization), interpretable clinical prediction, HarmonyOS (ArkTS, Hypium) test automation, and full-stack engineering.

Education

The Chinese University of Hong Kong, Shenzhen

B.Sc., Data Science and Big Data Technology (expected 2027)

Sept. 2023 — Jun. 2027
  • GPA: 3.467 / 4.0
  • Coursework: Software Engineering (A), Algorithm Design and Analysis (A-), Machine Learning, Stochastic Processes (A-), Optimization, Database Systems (A-), Capstone Project (A).

Experience

Software Development Engineer Intern · Huawei Technologies Co., Ltd.

Huawei Mobile Services (HMS) · Dongguan, China

2026.06 — 2026.09 (Expected)
  • With the testing team on AppGallery ArkTS development: optimized the SDD workflow through end-to-end self-verification; packaged Hypium-based environment setup, test-script execution, and result capture as reusable skills, replacing manual compile–deploy–verify steps in DevEco Studio.
  • Introduced AI into the closed loop: routed test failures to code agents for automated repair and integrated the skill chain with SDD compile/repair automation, closing the code–test–feedback–fix pipeline from test-department scripts to developer-ready fixes.

LLM Inference Engineer (Capstone Project) · SF Technology Co., Ltd.

Shenzhen, China

2026.01 — 2026.05
  • Optimized throughput and distributed communication for enterprise-scale Qwen3-class LLMs (4B / 30B) using SGLang and dual-container isolation; built a load-test web platform; two patent applications in progress from core optimizations.
  • Configured and benchmarked parallelism strategies (PD/EPD, TP/DP/EP) and FP8/INT8 quantization across RTX 4090 and H20 clusters; achieved TTFT −48.9% and throughput +664% on Qwen-30B (TP4+DP2), and throughput +750% on Qwen-4B (TP1+DP2).

Data Engineering Intern · Shanghai Wuzhi Evolution Technology Co., Ltd.

Embodied Data R&D · Shanghai, China

2025.06 — 2025.08

Collaborated with Prof. Bo Zhao's group (Shanghai Jiao Tong University) on embodied AI data and VLA models.

  • Built the xArm data pipeline and optimized VLA (8,000+ trajectories).
  • LeRobot stack with multimodal LLMs and natural-language command interfaces; grasping and multi-layer stacking tasks at >90% success.

Projects

MiniRedis Testing Suite

Software Test Engineer

Mar. — Apr. 2026

  • Python test-generation suite for MiniRedis: seed-reproducible fuzzing and metamorphic relations across string, list, expression, and schema-validation commands.
  • Scored 82.968 raw (class median 74.38, SD 9.98) and 99.50/100 curved (class median 89.89, SD 10.21).

NSC-Advisor (Ischemic Stroke Prognosis)

Research Assistant

Sept. — Dec. 2025

Related manuscript submitted to ISMRM (under review).

  • Interpretable favorable / unfavorable prognosis from admission data.
  • Few-shot learning, prompting, and RAG for clinical evidence; dual-input UI prototype; 93.75% accuracy on 16 held-out real cases.

Library Management System

Developer

Sept.–Nov. 2024

  • Full-stack Python (tkinter) + SQLite; four normalized tables, composite indexes, 15+ features (SHA-256 authentication), admin dashboard; tests covered 100% of requirements.

2D RPG combat (UE5 + C++)

Developer

Sept.–Dec. 2024

  • C++ combat with three enemy AI types; Qt launcher with SHA-256 messaging; PaperZD animation state machines; team core codebase 1,000+ lines; best course project.

Campus Roles & Honors

Undergraduate Teaching Fellow (USTF)

Sept. 2024 — Present

School of Data Science, CUHK(SZ)

Data Structures, Databases, and one more core course; 10+ tutorials for 800+ students; co-designed problems and grading; SDS Excellent USTF Award (2024–2025).

Student Assistant

Nov. 2023 — Present

The Chinese University of Hong Kong, Shenzhen Library

Printers (Bambu Lab X1E, Ultimaker S5, Formlabs Form 2), 30+ jobs; Final Cut Pro and Adobe Photoshop edits; 3D-printing workshops.

Founder & Vice President

Jul. 2024 — Dec. 2025

2Tired Cycling Club

Core team of 20 across five functions; Songshan Lake and Tour de France meet-ups; 80+ members in year one; ~95% satisfaction.

Honors

  • CUMCM Guangdong Third Prize (2025)
  • SDS Excellent USTF Award (2024–2025)
  • Bronze, 1500 m (University Games)
  • Bronze, 100 m breaststroke (Sports Festival)

Skills & Interests

Technical

Languages

Chinese (native); English (IELTS 7.0, professional proficiency for coursework and work).

Interests

Cycling, photography, hiking, half marathon, Model United Nations.

Contact

Open to internships, research collaboration, and technical discussions.