Po Jen Chen
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Po Jen Chen Email & Phone Number

Staff Machine Learning Engineer at PayPal
Location: New York, New York, United States 4 work roles 2 schools
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✓ Verified May 2026 3 data sources Profile completeness 86%

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Current company
Role
Staff Machine Learning Engineer
Location
New York, New York, United States

Who is Po Jen Chen? Overview

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Po Jen Chen is listed as Staff Machine Learning Engineer at PayPal, based in New York, New York, United States. AeroLeads shows a matched LinkedIn profile for Po Jen Chen.

Po Jen Chen previously worked as AI Team Lead at Pinkoi and Senior Machine Learning Engineer at Pinkoi. Po Jen Chen holds Master Of Science - Ms, Institute Of Communications Engineering from National Taiwan University.

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Email format at PayPal

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PayPal

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Profile bio

About Po Jen Chen

Over 6 years experienced Machine Learning Engineer with a strong leadership background within E-commerce and EduTech industry and a passion for leveraging data science and machine learning to enhance lives personally at scale. VISA sponsorship needed (Currently stay in the US and could work full time via CPT & OPT)* 6+ years of expertise in ML engineering and full-stack development.* Leadership: With experience in leading a data team consisting of 3-4 full-time and E2E dev cycle via agile development. Successfully orchestrated personalized ranking strategies, resulting in a notable 10.2% boost in add-to-cart rates.* Specialized in Machine Learning Engineering, Data Engineering and Data Science: Rich experience in planning and executing an AI project from 0 to 1, including search&ranking algorithm, user modeling, and recommendation systems.* Handled data in big scale: Had experience in processing billions of user activity data and building model for 5M+ users and 2M+ items through Spark, Airflow, and Docker* Have experience in deploying embedding-based models: Had deployed an API within 50ms response time.* Strong Communication: Collaborated across 200+ international team members, working closely with both product and business teams.* Team Culture Building: Committed to fostering a high-performance, learning-oriented, and collaborative team culture through highly alignment, study group, and clear guiding principles.

Current workplace

Po Jen Chen's current company

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PayPal
Paypal
Staff Machine Learning Engineer
New York, NY, US
AeroLeads page
4 roles

Po Jen Chen work experience

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

Staff Machine Learning Engineer

New York, NY, US

Ai Team Lead

Current

Taipei, TW

Pinkoi is an international design-oriented e-commerce company like Etsy in the US with 5M+ users and 2M+ items. As a leader, I led 4 full-time team members and 80% of the projects delivered by my team reached their goal and 30% of them met the stretch goal because of the learning-oriented, genuine, autonomous culture I built.- Led 4 full-time AI team to.

Jan 2022 - Present

Senior Machine Learning Engineer

Taipei, TW

- Achieved 11-12% CTR and reduced the bounce rate by 7% by building new keywords recommendation on the item page through user behaviors and association rules and collaborating with a cross-functional team.- Improved 140% in the MAP@5 by applying personalization using statistical methods on the APP homepage to 1M recently active users and cooperating with.

Jul 2020 - Dec 2021

Software Engineer - Machine Learning

TW

Junyi Academy is an education nonprofit organization like KhanAcademy in the US with currently 100k+ WAU. As a team lead, led 3 full-time and 2 part-time members including web developers, data engineers, and data scientists to build an online service end to end.Data scientist:- Improved the correct rate by 10% after accepting the recommendation using NLP.

Mar 2017 - Jun 2020
2 education records

Po Jen Chen education

Master Of Science - Ms, Institute Of Communications Engineering

National Taiwan University

Bachelor'S Degree, Electrical Engineering Department

National Taiwan University
FAQ

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What company does Po Jen Chen work for?

Po Jen Chen works for PayPal.

What is Po Jen Chen's role at PayPal?

Po Jen Chen is listed as Staff Machine Learning Engineer at PayPal.

Where is Po Jen Chen based?

Po Jen Chen is based in New York, New York, United States while working with PayPal.

What companies has Po Jen Chen worked for?

Po Jen Chen has worked for Paypal, Pinkoi, and 均一平台教育基金會 Junyi Academy.

How can I contact Po Jen Chen?

You can use AeroLeads to view verified contact signals for Po Jen Chen at PayPal, including work email, phone, and LinkedIn data when available.

What schools did Po Jen Chen attend?

Po Jen Chen holds Master Of Science - Ms, Institute Of Communications Engineering from National Taiwan University.

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