Chang Su

AI Researcher

New York City, New York, United States7 yrs 8 mos experience
Most Likely To SwitchAI Enabled

Key Highlights

  • Expert in product analytics and experimental design.
  • Proven track record in driving key growth metrics.
  • Skilled in building predictive machine learning models.
Stackforce AI infers this person is a Data Scientist with expertise in SaaS and Healthcare industries.

Contact

Skills

Core Skills

Product AnalyticsExperimental DesignMachine LearningData AnalysisMarketing AnalyticsStatistical Analysis

Other Skills

Predictive AnalyticsData AnalyticsPythonSQLStatisticsStatistical ModelingHypothesis TestingCausal InferenceAnalytical SkillsProduct AnalysisA/B TestingPython (Programming Language)Data MiningBig DataData Visualization

About

1️⃣ I’m a data scientist with 4 years of experience in B2B and B2C business, having been involved in SaaS and Healthcare industry. My expertise lies in product analytics, experimental design (A/B testing), and machine learning models 2️⃣ Metrics, metrics, and metrics. During my time at Confluent, I designed and conducted 10+ experiments and drove key growth metrics such as activation and retention. I have a deep understanding of user behavior patterns and can effectively identify trends and opportunities for product improvement by leveraging and mining large data sets 3️⃣ Before joining Confluent, I worked in a healthcare company where I built predictive machine learning models for insurance claims

Experience

7 yrs 8 mos
Total Experience
1 yr 6 mos
Average Tenure
3 yrs
Current Experience

Walmart

2 roles

Staff Data Scientist

Promoted

Aug 2025Present · 9 mos · New York City Metropolitan Area

Senior Data Scientist

May 2023Sep 2025 · 2 yrs 4 mos · New York City Metropolitan Area

Confluent

Data Scientist

Jun 2022Mar 2023 · 9 mos

  • Partnered with Product-Led Growth Team, including product managers, engineers, and designers, to optimize the product and customer journey in confluent.cloud and drive key growth metrics, throughout the entire user funnel including acquisition, activation, engagement & retention, and revenue
  • Designed and conducted A/B tests for new feature launches and evaluated experiment results by conducting user segmentation. Initiated and recommended personalized onboarding paths, leading to a 10% increase in onboarding activation rates for unfamiliar users
  • Conducted deep-dive analyses including UI funnel analysis and user engagement analysis to uncover user behavior patterns and identify opportunities for in-product improvements by mining UI data and identifying key actions, resulting in a 5% reduction in churn rate
  • Built and maintained end-to-end data pipelines and Tableau dashboards to monitor key performance metrics, and provided timely insights into metric movements assisting decision-making by the executive team
  • Presented findings and actionable insights to senior management and cross-functional teams to help inform product strategies and contribute to the overall success of the Product-Led Growth motion
Predictive AnalyticsData AnalyticsProduct AnalyticsExperimental Design

Skycliff it

Data Scientist

Jun 2020Jun 2022 · 2 yrs · New York City Metropolitan Area

  • Project: YourDoctors — a patient and claim management system for healthcare providers
  • Led and developed H2O Random Forest model using Python by formalizing and training 500,000 history claim records data to prevent denial and predict the claim payment from insurance companies
  • Identified key metrics and measure KPIs, designed experiments to evaluate model performance and draw business insights, increased average reimbursement by 5%, and decreased claim denial rate by 3%
  • Collaborated with engineers, data scientists, and product managers to deploy machine learning models into production on AWS, maintained and aligned data products regularly
  • Project: SOMA — a remote patient monitoring wearable device connecting patients with doctors
  • Prototyped a 3-layer LSTM RNN model to monitor sleep and classify 4-phase sleep stages
  • Optimized model performance through careful and strategic hyperparameter tuning and feature engineering, which improved the model to surpass the baseline model performance by 6%
  • Extracted, cleaned, and wrangled sleep data of 2,237 participants from National Sleep Research Resource (NSRR) including 1.5 million minutes signals (400GB) with sleep stage labels using SQL
  • Explored and compared 30 cutting-edge journal articles about sleep stage classification using machine learning and neural networks and built models based on these research papers to find the optimal solution
Predictive AnalyticsData AnalyticsMachine LearningData Analysis

We-education group, inc.

Data Analyst

Mar 2019Jun 2020 · 1 yr 3 mos · New York City Metropolitan Area

  • Designed experiments and implemented A/B testing for email campaigns, increased click-through rate by 5%
  • Analyzed user conversion funnel and customer behavior, defined metrics and user segmentation to optimize promotion strategy and increase engagement, and enhanced conversion rate by 3%
  • Executed marketing and Ad data analytics to support decision making, and delivered data visualization panels and analytics reports to present insights to technical and non-technical stakeholders
Predictive AnalyticsData AnalyticsData AnalysisMarketing Analytics

Fordham gabelli school of business

Graduate Assistant

Sep 2017May 2018 · 8 mos · Greater New York City Area

  • Presented workshop lectures to 50 students on getting started with SQL and Oracle
  • Graded assignments about SQL queries, ER diagram, and database design every week
Data AnalyticsStatisticsData AnalysisStatistical Analysis

Education

Fordham University

Master of Science - MS — Applied Statistics and Decision-making

Jan 2017Jan 2018

University of Science and Technology of China

Bachelor's degree

Jan 2013Jan 2017

Fu Jen Catholic University

Exchange Program

Jan 2016Jan 2017

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