AeroLeads people directory · profile

Pei-Ju (Pj) Sung Email & Phone Number

Software Engineer, Machine Learning at Meta

Location: San Francisco Bay Area, United States, United States 5 work roles 3 schools

1 work email found @sofi.com 1 phone found area 607 LinkedIn matched

4 data sources Profile completeness 100%

Current company

Who is Pei-Ju (Pj) Sung? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

Pei-Ju (Pj) Sung is listed as Software Engineer, Machine Learning at Meta, a company with 1 employees, based in San Francisco Bay Area, United States, United States. AeroLeads shows a work email signal at sofi.com, phone signal with area code 607, and a matched LinkedIn profile for Pei-Ju (Pj) Sung.

Pei-Ju (Pj) Sung previously worked as Staff Data Scientist - Machine Learning at Sofi and Director, Model Risk Management at Visa. Pei-Ju (Pj) Sung holds Doctor Of Philosophy (Ph.D.), Applied Economics from Western Michigan University.

Company email context

Email format at Meta

This section adds company-level context without repeating Pei-Ju (Pj) Sung's masked contact details.

{first_initial}{last}@sofi.com

89% confidence

AeroLeads found 1 current-domain work email signal for Pei-Ju (Pj) Sung. Compare company email patterns before reaching out.

View email format View company profile Management contacts

Profile bio

About Pei-Ju (Pj) Sung

• Ph.D in Economics with 8+ years of industry experience in data science, predictive analytics, and machine learning• Experienced in using big data tools (Python, SQL, Hadoop, AWS) to develop and deploy end-to-end ML models• Leveraged ML models, experimental design, and data visualization to drive business performance and revenue growth• Strong ability to collaborate with cross-functional teams and communicate complex data solutions to senior stakeholders

Listed skills include Statistics, Data Analysis, Econometrics, Stata, and 36 others.

Current workplace

Pei-Ju (Pj) Sung's current company

Company context helps verify the profile and gives searchers a useful next step.

Pei-Ju (Pj) Sung work experience

A career timeline built from the work history available for this profile.

Software Engineer, Machine Learning

Staff Data Scientist - Machine Learning

Current

Sofi

San Francisco, California, US

Developed machine learning models (LightGBM, LSTM, neural network) for loan payments/delinquencies with over 20MM records and 2K attributes. After deployment in Feb. 2023, the model achieved 11% AUC improvement over.
Designed A/B tests, define performance metrics, and estimate the impacts for collection strategies. Increased the right person contact (RPC) rate by 35% and and promise-to-pay (PTP) rate by 20%
Developed tools and metrics for loss forecast, improving the annual forecast accuracy (MSE) by 34%
Communicated actionable insights for improving collection strategies to senior stakeholders (senior director/VP level)
Tools/frameworks: Python/Jupyter, TensorFlow, Keras, scikit-learn, NumPy, Pandas, matplotlib, SQL, AWS, git

Mar 2021 - Present

Director, Model Risk Management

Visa

Foster City, California, US

Built fraud detection ML models (LightGBM, RNN) to challenge and improve the models in production, processing sample size of over 300MM transactions and 150 attributes using Hadoop
Collaborated with cross-functional team on improving internal machine learning platform for validation team
Communicated key findings to cross-functional stakeholders and corporate executives (SVP level)
Tools/frameworks: Python/Jupyter, TensorFlow, Keras, scikit-learn, NumPy, Pandas, matplotlib, SQL, git, Hadoop

Feb 2020 - Mar 2021

Senior Data Scientist - Credit Risk Strategy

Sofi

San Francisco, California, US

Built data-driven credit strategies through exploratory analyses and data visualization
Developed key performance metrics and dashboards in Tableau to monitor and visualize strategy impacts
Communicated key findings to cross-functional stakeholders and company C-suite executives
Evaluated opportunity and risk for new student loan products through data analysis on Experian Sandbox data (years of credit data on 245MM consumers) using Python and Hadoop
Tools/frameworks: Tableau, Python/Jupyter, scikit-learn, NumPy, Pandas, matplotlib, SQL, git, Hadoop

Nov 2018 - Jan 2020

Model Validation Analyst, Avp

Bank Of The West

Chicago, Illinois, US

Identified sources of model risk and conducted effective challenges to models
Presented key findings and responded to ad-hoc questions from stakeholders and government regulatory agencies
Models validated: ALLL models (FAS114 Impairment Calculation), IFRS9, CCAR models (C&I PD/LGD), PPNR (Prepayment, New volume, Utilization), BSA/AML models (KYC), Scorecards (Auto, SFR, Credit Card)
Received Risk Recognition Award for work excellence in 2018Q3
Tools: SAS, Python, NumPy, Pandas, matplotlib, scikit-learn, time series model, logistic regression, loss forecast

Apr 2016 - Nov 2018

Team & coworkers

Colleagues at Meta

Other employees you can reach at sofi.com. View company contacts for 1 employees →

NR

Nick Ripes Colleague at Meta Healdsburg, California, United States, United States View → PS

Parag Sampat Colleague at Meta San Francisco, California, United States, United States View → ST

Seth T. Colleague at Meta Seattle, Washington, United States, United States View → SS

Saidi Sofia Colleague at Meta Nave, Lombardy, Italy, Italy View → JR

Jillian Roman Colleague at Meta Greensboro--Winston-Salem--High Point Area, United States View → MT

Muhammad Taqi Colleague at Meta Bahawalpur, Punjab, Pakistan, Pakistan View → 李

李俊浩 Colleague at Meta Seoul, South Korea, Korea, Republic Of View → JS

Jessica Sillyman Colleague at Meta Hanover, Pennsylvania, United States, United States View → KO

Kristy Owens Colleague at Meta Greater Philadelphia, United States View → EG

Emily G. Colleague at Meta San Francisco, California, United States, United States View →

3 education records

Pei-Ju (Pj) Sung education

Doctor Of Philosophy (Ph.D.), Applied Economics

Western Michigan University

Master’S Degree, Economics

San Diego State University

Bachelor’S Degree, Sociology

National Taipei University

FAQ

Frequently asked questions about Pei-Ju (Pj) Sung

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

What company does Pei-Ju (Pj) Sung work for?

Pei-Ju (Pj) Sung works for Meta.

What is Pei-Ju (Pj) Sung's role at Meta?

Pei-Ju (Pj) Sung is listed as Software Engineer, Machine Learning at Meta.

What is Pei-Ju (Pj) Sung's email address?

AeroLeads has found 1 work email signal at @sofi.com for Pei-Ju (Pj) Sung at Meta.

What is Pei-Ju (Pj) Sung's phone number?

AeroLeads has found 1 phone signal(s) with area code 607 for Pei-Ju (Pj) Sung at Meta.

Where is Pei-Ju (Pj) Sung based?

Pei-Ju (Pj) Sung is based in San Francisco Bay Area, United States, United States while working with Meta.

What companies has Pei-Ju (Pj) Sung worked for?

Pei-Ju (Pj) Sung has worked for Meta, Sofi, Visa, and Bank Of The West.

Who are Pei-Ju (Pj) Sung's colleagues at Meta?

Pei-Ju (Pj) Sung's colleagues at Meta include Nick Ripes, Parag Sampat, Seth T., Saidi Sofia, and Jillian Roman.

How can I contact Pei-Ju (Pj) Sung?

You can use AeroLeads to view verified contact signals for Pei-Ju (Pj) Sung at Meta, including work email, phone, and LinkedIn data when available.

What schools did Pei-Ju (Pj) Sung attend?

Pei-Ju (Pj) Sung holds Doctor Of Philosophy (Ph.D.), Applied Economics from Western Michigan University.

What skills is Pei-Ju (Pj) Sung known for?

Pei-Ju (Pj) Sung is listed with skills including Statistics, Data Analysis, Econometrics, Stata, Sas, R, Regression Analysis, and Time Series Analysis.

Security Check