Heidi Lin
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Heidi Lin Email & Phone Number

Data Scientist @ OfferUp | UC Berkeley MIMS ‘23 at OfferUp
Location: Berkeley, California, United States 8 work roles 4 schools
1 work email found @offerup.com LinkedIn matched
✓ Verified May 2026 4 data sources Profile completeness 86%

Contact Signals · 1 work email

Work email l****@offerup.com
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Current company
Role
Data Scientist @ OfferUp | UC Berkeley MIMS ‘23
Location
Berkeley, California, United States
Company size

Who is Heidi Lin? Overview

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Quick answer

Heidi Lin is listed as Data Scientist @ OfferUp | UC Berkeley MIMS ‘23 at OfferUp, a company with 455 employees, based in Berkeley, California, United States. AeroLeads shows a work email signal at offerup.com and a matched LinkedIn profile for Heidi Lin.

Heidi Lin previously worked as Data Scientist at Offerup and Graduate Student Instructor at Uc Berkeley College Of Engineering. Heidi Lin holds Master Of Information Management And Systems from University Of California, Berkeley.

Company email context

Email format at OfferUp

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{last}{first_initial}@offerup.com
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Profile bio

About Heidi Lin

With 5+ years of experience in data science, I have proven ability to solve business problems by developing end-to-end machine learning solutions.In my master's degree at UC Berkeley, I focus on exploring deep learning algorithms and their applications in unstructured data, especially text and images.My past work includes:- Image recognition (YOLOv5), Image classification (ResNet)- Text classification in English and Mandarin (LSTM, CNN, MLP Classifier)- Predictive models (XGBoost, Regression, and more)- ML deployment (Jenkins and AWS)- Data analytics (customized tools)

Current workplace

Heidi Lin's current company

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OfferUp
Offerup
Data Scientist @ OfferUp | UC Berkeley MIMS ‘23
bellevue, washington, united states
Website
Employees
455
AeroLeads page
8 roles

Heidi Lin work experience

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Data Scientist

Current

United States

Jun 2023 - Present

Graduate Student Instructor

Berkeley, California, United States

Led a class of 40 students on developing data science projects in industry context, including multimodal recommender system, computer vision and ensemble modeling. (Course: IEOR243 Analyrics Lab)

Jan 2022 - May 2023

Data Science Intern

Bellevue, Washington, United States

  • 【Natural Language Processing】
  • Developed real-time text classification using deep neural networks (LSTM, CNN) to suggest product categories for sellers.
  • Analyzed model failure patterns and edge cases to improve data quality. Implemented pre-trained word embeddings (GloVe) to improve generalization, increasing accuracy by 5% and precision by 10%.【Computer Vision】
  • Developed transfer learning for image classification to identify e-commerce images.
May 2022 - Aug 2022

Data Scientist, Fintech Business Unit

Taipei, Taiwan

  • 【Machine Learning Development & Productization】
  • Built the first in-house credit risk model using XGBoost. Created innovative features from telephone behavior to reduce loan underwriting risk by 50%.
  • Deployed the credit risk model to production, automated model retraining and scoring, saving 60+ working hours per month.
  • Customized performance and model stability metrics for imbalanced data.
  • Designed automated model reports and visualizations using WandB. Implemented Explainable AI using SHAP.【Process Optimization & Analytics】
  • Created an EDA tool that combines statistical tests and optimal data binning to shorten data-mining cycle from 7 to 2 days.
Oct 2020 - Jul 2021

Data Scientist

Kgi Bank, Fintech & New Financial Services
  • Built underwriting models using logistic regression, increasing loan approval rate for thin credit files by 175%.
  • Predicted cross-selling opportunities using Random Forest to unveil and prioritize under-served customer segments.
Apr 2019 - Oct 2020

Data Analyst

Kgi Bank, Fintech & New Financial Services

Taipei, Taiwan

  • Devised product features and marketing strategies for a new digital banking service based on customer profiling and profit projection.
  • Extracted information from over 1M transaction data, defined metrics and built the data mart from scratch to create a monthly performance dashboard.
Apr 2018 - Apr 2019

Business Analyst

Taipei, Taiwan

  • Designed and executed A/B testing for SMS marketing campaign, increasing response rate by 160%.
  • Proposed new VIP customer segmentation using K-means, projecting customer lifetime value to advise up-selling strategy.
Mar 2017 - Apr 2018

Real Estate - Finance & Portfolio Management Intern

Taipei, Taiwan

  • Designed an Excel dashboard with numerical analysis and tendency charts to refine internal utility management process
Jul 2015 - Aug 2015
Team & coworkers

Colleagues at OfferUp

Other employees you can reach at offerup.com. View company contacts for 455 employees →

4 education records

Heidi Lin education

Master Of Information Management And Systems (Mims)

• Concentration in Machine Learning and Data Science • Relevant Coursework: Probability for Data Science, Principles and Techniques of.

Bachelor Of Business Administration (Bba), International Business, 3.8/4.0

National Taiwan University

Activities and Societies: Design Thinking Club; Director of Public Relations; NTU x PKU Elite Camp• Relevant Coursework: Statistics.

FAQ

Frequently asked questions about Heidi Lin

Quick answers generated from the profile data available on this page.

What company does Heidi Lin work for?

Heidi Lin works for OfferUp.

What is Heidi Lin's role at OfferUp?

Heidi Lin is listed as Data Scientist @ OfferUp | UC Berkeley MIMS ‘23 at OfferUp.

What is Heidi Lin's email address?

AeroLeads has found 1 work email signal at @offerup.com for Heidi Lin at OfferUp.

Where is Heidi Lin based?

Heidi Lin is based in Berkeley, California, United States while working with OfferUp.

What companies has Heidi Lin worked for?

Heidi Lin has worked for Offerup, Uc Berkeley College Of Engineering, Gogolook Co., Ltd, Kgi Bank, Fintech & New Financial Services, and Cathay United Bank.

Who are Heidi Lin's colleagues at OfferUp?

Heidi Lin's colleagues at OfferUp include Scam Hunter, David Sokol, Luis Flores Salgado, David Pavao, and Sawyer Frederick.

How can I contact Heidi Lin?

You can use AeroLeads to view verified contact signals for Heidi Lin at OfferUp, including work email, phone, and LinkedIn data when available.

What schools did Heidi Lin attend?

Heidi Lin holds Master Of Information Management And Systems from University Of California, Berkeley.

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