Hongshen Zhang

Email: [email protected]

Education

Nanyang Technological University Jan 2025 - May 2026

Master of Science in Machine Learning Singapore

Southwest Jiaotong University Sep 2018 - Jun 2022

Bachelor of Engineering in Computer Science China

Work Experience

China Mobile Jul 2026 - Now

Solution Manager China

ByteDance Jul 2022 - Apr 2023

Backend Engineer China

  1. Old Lark System Retirement & Data Migration
    Developed and tested data migration scripts for the retirement of the old Lark system. Successfully migrated data from 300 enterprises , covering 20 data tables with a total of 20 million rows. The process was completed without incidents and reduced system maintenance costs by 30%.
  2. Technical Owner of Lark Headhunting Project
    Led technical planning and solution design. Participated in requirement analysis, resolved 10+ online issues, optimized troubleshooting workflows, and maintained zero incidents throughout the development cycle.
  3. Unit Testing Optimization
    Led improvements to unit testing across team projects. Enhanced coverage for legacy code and ensured all incremental code changes maintained over 70% test coverage, raising overall project coverage by more than 10%.

Internship Experience

Amazon Jun 2025 - Aug 2025

Software Development Engineer Intern China

  1. Designed and implemented an efficient RAG workflow using Python, Java, AWS, enabling large-scale document knowledge retrieval and intelligent responses.
  2. Built a conversational interface with React Native, optimized specifically for input/output-constrained environments like Kindle, ensuring smooth and low-latency user interactions.
  3. Developed core native modules in C++ to handle network requests and memory management, ensuring high efficiency and stability even on resource-constrained devices.

Project

ModelCraft Jan 2024 - Now

Tech Stack: Swift, SwiftUI, SwiftData, MLX

  1. Built a ReAct-based Agent orchestration and tool-calling system, enabling autonomous use of local tools such as search, terminal, and Computer Use.
  2. Implemented inference pipelines for Stable Diffusion, LTX-Video, and MusicGen using Swift + MLX, enabling on-device image, video, and audio generation.
  3. Implemented KV Cache and rolling summarization for context management, optimizing on-device inference and long-running task execution.
  4. Built an Agentic RAG pipeline with support for multiple file formats and vector retrieval.

Sentiment Analysis for Financial News Mar 2025 - Mar 2025

Tech Stack: Python, PyTorch, Huggingface Transformers

  1. Preprocessed financial news data, performed label encoding, tokenization, and dataset splitting.
  2. Supervised fine-tuned a pre-trained BERT model using HuggingFace Transformers, enhanced with LoRA for efficient parameter tuning.
  3. Applied CrossEntropy loss with L2 regularization and early stopping to mitigate overfitting and improve generalization.
  4. Achieved 86% classification accuracy, outperforming traditional ML baselines.

Rednote-like social app Dec 2024 - Jan 2025

Tech Stack: Spring Boot, Spring Cloud, Nacos, MySQL, Redis, Kafka, Elasticsearch, Minio, Freemarker

  1. Implemented scheduled publishing for articles and full-text search functionality.
  2. Used Freemarker template engine to render article detail pages, improving page load performance.
  3. Performed offline article scoring and leveraged Kafka Streams for real-time score updates.
  4. Implemented multi-level rate limiting, including Nginx rate limiting, Gateway rate limiting, and microservice-level rate limiting, to enhance service stability.

Skills

  1. Proficient in Java, Python, Typescript, React.js.
  2. Experienced with MySQL, Redis, Kafka and RocketMQ.
  3. Skilled in developing backend services using Spring Boot and Spring Cloud.
  4. Experienced with Pytorch, Scikit-learn, Transformers.
  5. Familiar with CNN, RNN, LSTM, Transformer architectures.
  6. Experienced with RAG and fine-tuning LLMs, including LoRA, Prompt-tuning, etc.
  7. Familiar with Agent architecture, including ReAct, Plan-and-Execute, MCP, Agent Skills, etc.
  8. Familiar with Pytorch, Scikit-learn, Transformers, Numpy, Pandas, etc.
  9. Familiar with AWS.

Honors

1st Prize, China Undergraduate Student Market Survey and Analysis Competition Apr 2021

2nd Prize, WeChat Mini Program Application Development Competition Dec 2020

1st Prize, China Undergraduate Mathematical Contest in Modeling Sep 2020

3rd Prize, National University Students Electrical Math Modeling Competition Jul 2019

3rd Prize, May Day Mathematical Contest in Modeling Jun 2019

Last Updated: 29 Aug 2026