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Ben Lerner Email & Phone Number
Senior Machine Learning Engineer
at
Meta
1 work email found
@doordash.com
LinkedIn matched
✓ Verified Jul 2026
4 data sources
Profile completeness 100%
Who is Ben Lerner? Overview
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Quick answer
Ben Lerner is listed as Senior Machine Learning Engineer at Meta, based in New York, United States. AeroLeads shows a work email signal at doordash.com and a matched LinkedIn profile for Ben Lerner.
Ben Lerner previously worked as AI Safety Researcher at Supervised Program For Alignment Research and Software Engineer, Machine Learning at Doordash. Ben Lerner holds Alignment from Ai Safety Fundamentals.
Company email context
Email format at Meta
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blerner@doordash.com
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AeroLeads found 1 current-domain work email signal for Ben Lerner. Compare company email patterns before reaching out.
Profile bio
About Ben Lerner
Ben Lerner is a Senior Machine Learning Engineer at Meta. He possess expertise in programming, java, teamwork, tutoring, vim and 13 more skills. He is proficient in Japanese. Colleagues describe him as "I had the pleasure of working with Ben on my first team at Two Sigma. Not only does he have strong engineering, quantitative, and critical thinking skills, he brings a passion to work every day that makes working with him a pleasure. He structures his thinking when presenting it to others, resulting in clear and effective communication. He is also very dedicated to constantly improving team practices, regularly proposing and following through on new code quality practices." and "Ben and I worked together very closely at Snap for a while. What he has accomplished in our group within such a time frame was way more than one would expect from a new grad - he was the major contributor to the data pipeline that powers our friend feed ranking. I saw him pick up new techniques very quickly and build things from scratch, which definitely proved him as a fast learner and showed his strong technical background. He conducts project plannings very well and efficiently makes progress to ship them. He articulates technical details clearly and communicates with team members nicely. The code he writes is clean and always has solid test coverage. In addition to all these excellent assets, he also works very hard and stays very focused. I would highly recommend him to any engineer team. Definitely looking forward to working with him again."
Listed skills include Programming, Java, Teamwork, Tutoring, and 14 others.
Current workplace
Ben Lerner's current company
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13 roles · 12 years
Ben Lerner work experience
A career timeline built from the work history available for this profile.
Ai Safety Researcher
CurrentStudying sparse autoencoders with Stefan Heimersheim of Apollo Research
2024 - Present
~2 yrs 6 mos
Software Engineer, Machine Learning
- ads quality (search relevance)- experimentation platform backend- forecasting (daily order volume / quality issues)
2021 - 2024
~3 yrs
Machine Learning Engineer
- Designed and implemented new feature store which reduced query times by 4x and supported heterogeneous data types- Ranked vehicle subsystem issues by risk of triggering a recall, detected major fleet-wide problems >4 months before OEMs- Built SQL dashboards backed by Postgres to give OEMs insight into the scope and cause of new vehicle failure modes- Expanded Spark-based model evaluation pipeline to monitor multiple models and quickly surface performance degradation
2020 - 2021
~1 yr
Participant
Applied deep learning to NLP problems, learned about ML productionalization techniques
2020 - 2020
Software Engineer
2018 - 2020
~2 yrs
Data Engineer
- Transformed 3B events involving >150M users into >600 signals for ranking the friend feed by implementing feature extraction pipelines in Apache Beam from scratch- Predicted engagement between users by aggregating historical interaction data- Refactored and extensively tested pipelines to minimize costs and ease the process of adding and verifying new functionality- Built and maintained data workflows in Apache Airflow to measure engagement with Discover page content
2017 - 2018
~1 yr
Software Engineering Intern
- Reduced latency of desktop load time of ebook rental pages by >10% by streamlining business logic, removing redundant service calls, and caching reused data- Migrated pages to Java Spring to introduce unit tests and collect detailed performance metrics of sub-components
Jun 2016 - Aug 2016
Head Teaching Assistant
- Managed 150+ students and 7 TAs for ENGI 1006 - Introduction to Computing for Engineers and Applied Scientists- Lead recitations on material, proctored exams, wrote, edited, and ensured timely grading of problem sets and exams
2016 - 2016
Teaching Assistant
COMS 3101 - Programming Languages: Python (Fall 2015, Spring 2016)- Wrote scripts to automatically test and grade programming assignments- Met with students during weekly office hours and corresponded via email/Piazza
2015 - 2016
~1 yr
Software Engineering Intern
- Improved Elasticsearch relevancy scores of user-saved links with logarithmic age decay and additional URL parsing schemes- Migrated existing data to new Elasticsearch indexes to support the updated query without interrupting user experience- Created custom Slack integrations to provide notifications for daily infrastructure activity
Jun 2015 - Sep 2015
Senior Software Developer
- Built backend for Courses@CU, a course information and schedule planning site built in Rails used by thousands of Columbia students. Added major requirements tracking, professor reviews, core class swapping, and class enrollment scraping. Addition of these features increased userbase by 65% over one semester- Directly managed three teams of junior developers, each working on improving one of our three products: Courses@CU, Print@CU, and Eat@CU. Held biweekly meetings to assess progress, manage deadlines, and provide technical mentorship- Created and lead a two-week long onboarding bootcamp to introduce new developers to our codebase and tech stack- Overhauled our on-campus printing service, Print@CU, to increase ad space and drive more users to the site through a more intuitive interface
Dec 2014 - May 2015
Junior Software Developer
Expanded functionality of Courses@CU product, developed test suite, filled out documentation. Worked extensively with Ruby on Rails.
Oct 2014 - Dec 2014
2 education records
Ben Lerner education
Alignment
Ai Safety Fundamentals
Bachelor'S Degree, Computer Science
Columbia University
FAQ
Frequently asked questions about Ben Lerner
Quick answers generated from the profile data available on this page.
What company does Ben Lerner work for?
Ben Lerner works for Meta.
What is Ben Lerner's role at Meta?
Ben Lerner is listed as Senior Machine Learning Engineer at Meta.
What is Ben Lerner's email address?
AeroLeads has found 1 work email signal at @doordash.com for Ben Lerner at Meta.
Where is Ben Lerner based?
Ben Lerner is based in New York, United States while working with Meta.
What companies has Ben Lerner worked for?
Ben Lerner has worked for Meta, Supervised Program For Alignment Research, Doordash, Viaduct, and Recurse Center.
How can I contact Ben Lerner?
You can use AeroLeads to view verified contact signals for Ben Lerner at Meta, including work email, phone, and LinkedIn data when available.
What schools did Ben Lerner attend?
Ben Lerner holds Alignment from Ai Safety Fundamentals.
What skills is Ben Lerner known for?
Ben Lerner is listed with skills including Programming, Java, Teamwork, Tutoring, Vim, Ruby On Rails, Sql, and Html.
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