shana Ma

shana Ma

AI Engineer
China

About Me

AI Engineer with 10 years of experience in machine learning, natural language processing, deep learning, data analysis, and delivering production-grade AI solutions. Full project lifecycle experience — from problem defin…

Experience

AI Engineer

NTT DATA
Jun 2023 - Present · 3 years 4 months

<p>Translate business requirements into data structures, metrics frameworks, and analytical models, aligning with operational goals.<br>
Develop Python-based data processing pipelines and machine learning algorithms to support business-facing AI solutions.<br>
Build interactive dashboards and reporting tools with Flask to support decision-making for business users and stakeholders.<br>
Design and implement on-premise knowledge assistant systems built on open-source LLMs, Dify, vector retrieval, and RAG.<br>
Contribute to AI solution scoping, proposal writing, and client communication.</p>

Data Scientist

Nielsen
Jan 2022 - May 2023 · 1 year 4 months

<p>Applied clustering, regression, and classification methods to business modeling, collaborating with engineers on production delivery.<br>
Built data collection, cleaning, preprocessing, and augmentation pipelines to improve model robustness under limited sample sizes.<br>
Fine-tuned pretrained models, coordinated data annotation, and developed sales forecasting models based on review and user data.<br>
Delivered and deployed sales forecasting models for JD.com-related business scenarios.<br>
Built interactive visualizations with Dash to surface patterns, trends, and decision-relevant insights.</p>

Algorithm Engineer

Lufax
Sep 2021 - Dec 2021 · 3 months

<p>Designed and optimized an NLP-based quality inspection solution for compliance monitoring of financial services sales calls.<br>
Expanded the training set from 5,000+ to 8,000+ samples using SimBERT2 and trained a BERT classifier to detect non-compliant calls.<br>
Compressed the model via knowledge distillation, raising classification accuracy from 84.5% to 92% while keeping detection rate above 90%.</p>

NLP Engineer

Bosch (China) Investment Ltd.
Nov 2018 - Jul 2021 · 2 years 8 months

<p>Led technical exploration, owning the development, training, optimization, and deployment of NLP and machine learning models.<br>
Built user profiling pipelines combining rule logic, clustering, topic modeling, and predictive tagging to support recommendation applications.<br>
Delivered machine learning solutions across text recognition, image recognition, time series analysis, chatbots, equipment fault detection, and defect detection.<br>
Maintained 100% on-time task delivery, with overall feature completion rate exceeding 90% across owned projects.<br>
Reduced compute and machine costs through model simplification without compromising model performance.</p>

Data Mining Engineer

Xiening Computer Technology Co., Ltd.
Jun 2016 - Nov 2018 · 2 years 5 months

<p>Applied modeling, forecasting, and algorithmic methods to deliver data-driven solutions across diverse business scenarios.<br>
Authored technical documentation for data processing and label mining based on requirements clarification and feature design discussions.<br>
Built models using R, TF-IDF, Random Forest, and Naive Bayes for research/news topic classification, information filtering, entity extraction, recommendation, asset allocation, and transaction data visualization (Dash dashboards).<br>
Continuously updated the sample library to support model iteration, achieving a final solution accuracy above 90%.</p>

Skills

Python Classification Regression Clustering Time Series XGBoost LightGBM CatBoost Naive Bayes LDA Beam Search Knowledge Distillation Transformer CNN RNN LSTM BERT DSSM ChatGLM Qwen DeepSeek LLaMA Factory Prompt Engineering Function Calling RAG Scikit-learn Ollama Flask Dash Gradio Dify Milvus Faiss Neo4j MCP Microsoft Graph API Azure Function App Power BI Scrapy
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