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Mark Lock Email & Phone Number

Staff Data Scientist at Duolingo
Location: Pittsburgh, Pennsylvania, United States 13 work roles 3 schools
1 work email found @facebook.com 2 phones found area 609 LinkedIn matched
✓ Verified August 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 2 phones

Work email m****@facebook.com
Direct phone (609) ***-****
LinkedIn Profile matched
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Current company
Role
Staff Data Scientist
Location
Pittsburgh, Pennsylvania, United States

Who is Mark Lock? Overview

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Quick answer

Mark Lock is listed as Staff Data Scientist at Duolingo, based in Pittsburgh, Pennsylvania, United States. AeroLeads shows a work email signal at facebook.com, phone signal with area code 609, and a matched LinkedIn profile for Mark Lock.

Mark Lock previously worked as Senior Data Scientist, Manager at Duolingo and Independent Projects at Harvard University. Mark Lock holds Master Of Science, Applied Computational Sciences from Harvard University.

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Email format at Duolingo

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{first}.{last}@facebook.com
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AeroLeads found 1 current-domain work email signal for Mark Lock. Compare company email patterns before reaching out.

Profile bio

About Mark Lock

My work lies at the intersection of business, statistics and computation. I have a proven track record leading data projects for the top banks, Fortune 10 retailers and CPG groups globally (Walmart, Target, Microsoft, Lowe's, Coca Cola, etc.).Primary languages and tools: Python, R, TensorFlow, SQL (Presto, BigQuery), TableauPrimary domains: Machine learning, causal inference, statistical modeling, NLP, experimentation

Listed skills include Sql, R, Tableau, Vba, and 11 others.

Current workplace

Mark Lock's current company

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Duolingo
Duolingo
Staff Data Scientist
Website
AeroLeads page
13 roles

Mark Lock work experience

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

Staff Data Scientist

Pittsburgh, Pa, Us

Senior Data Scientist, Manager

Pittsburgh, Pa, Us

+ Currently lead an analytics engineering / data engineering team+ Built a machine learning growth forecasting process for financial guidance and internal planning

Independent Projects

Cambridge, Massachusetts, Us

+ Seq2Cite: Attentional Encoder-Decoder In-line Citation Recommender using Recurrent and Convolutional Neural Networks (TensorFlow, Python)https://tinyurl.com/yyx4z3ou+ Modeling COVID19 cases via Attentional Recurrent Neural Networks using Google mobility and search data (TensorFlow, Python)https://tinyurl.com/y2or6np5+ GenericDiff: a custom automatic differentiation library suitable for optimization use cases (Python)Documentation: https://tinyurl.com/y6rrmbpq || Library: https://tinyurl.com/y2k8nvm6+ RnaVelocity: a library that utilizes GenericDiff to predict the most likely markov chain of parent and daughter cells from single cell RNA sequences - great for understanding lineage of cells (Python)Documentation: https://tinyurl.com/y4fm2y7t || Library: https://tinyurl.com/y6c8ohve+ Empirical Effectiveness of Covariate Missing Data Methods for Causal Inference (R)https://tinyurl.com/y4bhxdt6+ Spotify Song to Playlist Recommender System (Python)https://spotted-d.github.io/contents/+ Linguistic Cues of Successful Negotiations w/ HBS Organizational Behavior (NLP, Python) - ongoing+ Teaching Fellow: Engineering the Acoustical World

Aug 2019 - Dec 2020

Summer Data Scientist

+ Prioritized highest opportunity users to increase Facebook Groups engagement+ Identified power user traits using tree models+ Simulated time costs of engagement strategies using Markov chains

May 2020 - Aug 2020

Senior Analytical Lead (Big Box - Walmart)

Mountain View, Ca, Us

+ Managed 0.5B book of business, driving incremental revenue through measurement, opportunity sizing, and strategic consults+ Led faculty cohort for Google's Analytical Academy, founded Data Science II program and designed curriculum which reached over 100 analysts globally in 2018+ Founded analytics center website and dashboards to drive text, shopping and audience excellence for Hayneedle, Shoes and Walmart, driving ~5M incremental revenue from constrained optimization model+ Led cross-functional team to bring Google's locally-targeted ad products to market, driving 100M in incremental revenue across accounts in the sector+ Formed first bridge between Google ads team and Walmart merchandising team to influence Walmart's assortment strategy+ Recipient of 2019 Analytical Academy Top Faculty Award. Award winners demonstrated high levels of excellence in leadership, collaboration, accountability, high quality execution and initiative

Jul 2018 - Jul 2019

Strategy And Operations Data Scientist

Mountain View, Ca, Us

+ Led first long-term partnership between PeopleOps and Global Business leadership, negotiating data access, analyzing internal business tool sentiment, reported to Chief Business Officer+ Produced causal inference model (DiD + propensity score matching) to prove increased seller efficacy when using the mobile CRM product, justifying additional headcount/dollars in Google’s CRM mobile app development team. + Project lead to understand ad seller behavior vs. sales revenue performance, automated a data pipeline and performance regression model consisting of 10+ sources, provided best practices to leadership every quarter+ Built infrastructure for analyzing quarterly surveys on 20 internal business tools, providing actionable insights quickly and thoroughly to guide internal product roadmaps and sales leadership+ Led monthly data science training sessions (e.g. visualization, statistics, machine learning, regression, R) to up level a cross-functional team+ Recipient of the Google Prism award. Award winners solved a difficult business question in a way that has never been done before using creative technical methods. The award was granted for LDA topic modeling on employee complaint comments to mine emergent themes from data.

May 2016 - Jun 2018

Knowledge Analyst - Data Scientist

Boston, Massachusetts, Us

+ Created pro forma models and opportunity sizing tools helping banks re-price transactions, resulting in average incremental 2-10M revenue per year+ Created inventory management system for tire company to align geographical car demand with supply, resulting in average incremental 16M revenue per year+ Led innovation on internal Tableau, Alteryx and R tools to facilitate up-skilling of technical and non-technical consultants - created Network Visualization tool+ Provided NLP topic modeling insights on call center logs for client (LDA in R)

Jun 2015 - Apr 2016

Senior Data Analyst

+ Oversaw all aspects of data collection, analysis and delivery. Led projects for the following clients: Walmart, Target, Microsoft, Google, E&J Gallo, Kraft (Cafemom), Lowe’s, Mattel+ Utilized SQL, statistical software packages and Excel to analyze consumer data to transform metrics into stories.+ Wrote Excel VBA macros to automate everyday processes for the analytic team.+ Managed analyst team to effectively allocate resources during time-constrained periods, shortening the time period between the closure of data collection and report delivery to two weeks+ Put together daily/ weekly reports for client calls in which custom, rapid data pulls were transformed into client-friendly communications+ Trained analysts and survey programmers, offering support on survey logic, Excel and statistical software packages like SPSS+ Managed survey programming/ test team by developing checklists for content, for logic, and for technical mobile functionality (surveys are conducted through an in-house mobile app)

May 2012 - Jun 2015

Marketing Research Associate

Boston, Ma, Us

+ Analyzed large-scale cafeteria receipt data to study marketing interventions on food purchases of different customer segments+ Managed longitudinal experiments with Lowe’s Foods to study nutrition label perceptions on healthy purchasing behavior. Designed custom Qualtrics surveys for iPad and desktop environments+ Wrote two faculty teaching guides for Groupon and Sephora case studies+ Wrote psychology papers about marketing interventions to get people eating healthier

Jul 2011 - Apr 2012

Social Media And Marketing Coordinator

Everyfit Fitness Mobile App Startup
Oct 2011 - Dec 2011

Branding Project Management Intern

Sp Lendid Snack Food Company Ltd

+ Managed rebranding of Yorker Seafood Chips, recruited designer and oversee creative direction for the project+ Elevated the positioning of the struggling snack line, multiplying Taiwan sales 3X and enabling entry into China’s saturated snack market

Feb 2010 - Nov 2010

Editorial Assistant

Bishkek, Kg

+ Published a four-article feature on Taiwan’s education industry in the Aug. 2010 issue of Taiwan’s English Language Business TOPICS magazine.+ Interviewed Taiwanese politicians, business executives and school administrators+ Translated Chinese materials to English

Jun 2010 - Jul 2010

Human Resources Intern

Taipei, Songshan, Tw

+ Analyzed employee satisfaction surveys, assisted in creation of new action plans while examining effectiveness of past action plans, instigating improvements in workplace efficiency

Dec 2008 - Jan 2009
Team & coworkers

Colleagues at Duolingo

Other employees you can reach at duolingo.com. View company contacts →

3 education records

Mark Lock education

Master Of Science, Applied Computational Sciences

Harvard University

Ba, Psychology/ Finance

Princeton University

Education record

Taipei American School
FAQ

Frequently asked questions about Mark Lock

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

What company does Mark Lock work for?

Mark Lock works for Duolingo.

What is Mark Lock's role at Duolingo?

Mark Lock is listed as Staff Data Scientist at Duolingo.

What is Mark Lock's email address?

AeroLeads has found 1 work email signal at @facebook.com for Mark Lock at Duolingo.

What is Mark Lock's phone number?

AeroLeads has found 2 phone signal(s) with area code 609 for Mark Lock at Duolingo.

Where is Mark Lock based?

Mark Lock is based in Pittsburgh, Pennsylvania, United States while working with Duolingo.

What companies has Mark Lock worked for?

Mark Lock has worked for Duolingo, Harvard University, Facebook, Google, and Boston Consulting Group (Bcg).

Who are Mark Lock's colleagues at Duolingo?

Mark Lock's colleagues at Duolingo include Daize N., Lorenzo Marcelja, Connor Hargus, 赵嘉瑜, and Yi He.

How can I contact Mark Lock?

You can use AeroLeads to view verified contact signals for Mark Lock at Duolingo, including work email, phone, and LinkedIn data when available.

What schools did Mark Lock attend?

Mark Lock holds Master Of Science, Applied Computational Sciences from Harvard University.

What skills is Mark Lock known for?

Mark Lock is listed with skills including Sql, R, Tableau, Vba, Alteryx, Stata, Spss, and Data Analysis.

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