AeroLeads people directory · profile
Marcin Mejran Email & Phone Number
Machine Learning Leader
at
Anthropic
1 work email found
@etsy.com
5 phones found area 646, 917, 718, and 888
LinkedIn matched
✓ Verified Jun 2026
4 data sources
Profile completeness 100%
Current company
Role
Machine Learning Leader
Location
New York City Metropolitan Area, United States, United States
Company size
Who is Marcin Mejran? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Marcin Mejran is listed as Machine Learning Leader at Anthropic, a company with 2110 employees, based in New York City Metropolitan Area, United States, United States. AeroLeads shows a work email signal at etsy.com, phone signal with area code 646, 917, 718, 888, and a matched LinkedIn profile for Marcin Mejran.
Marcin Mejran previously worked as Co-Founder/Chief Scientist at Stealth Ai Startup and Advisor at Concepts Of Independence Inc. Marcin Mejran holds Ms, Statistics from Stanford University.
Company email context
Email format at Anthropic
This section adds company-level context without repeating Marcin Mejran's masked contact details.
{first_initial}{last}@etsy.com
86% confidence
AeroLeads found 1 current-domain work email signal for Marcin Mejran. Compare company email patterns before reaching out.
Profile bio
About Marcin Mejran
I solve problems. Specializing in AI, ML, Generative AI, and data.With over 18 years of experience across ad tech, e-commerce, and healthtech, I have a proven track record of developing and implementing cutting-edge machine learning solutions. My expertise includes search, Large Language Models (LLMs), Generative AI, deep learning, natural language processing, and advanced recommendation systems. I excel in both designing innovative technologies and executing strategic projects that drive significant impact.Through my journey, I've gained expertise in content recommendation, search discovery, personalization, natural language processing, large language models, ad monetization, and marketplace dynamics. I've proposed and overseen both greenfield projects and expansions of already successful products.I thrive in technical conversations around deep learning, LLMs, Generative AI, NLP, learning to rank, representation learning, TensorFlow, PyTorch, Spark, Python, Scala, Kubernetes, Terraform, AWS, and GCP.Currently, I am deeply focused on driving innovation and pushing the boundaries in AI, ML, and GenAI through hands-on technical roles.
Listed skills include Machine Learning, Statistics, Data Analysis, Algorithms, and 31 others.
Current workplace
Marcin Mejran's current company
Company context helps verify the profile and gives searchers a useful next step.
Anthropic
16 roles · 20 years
Marcin Mejran work experience
A career timeline built from the work history available for this profile.
Co-Founder/Chief Scientist
Current
Stealth Ai Startup
Jan 2024 - Present
Advisor
Current
Mar 2022 - Present
Senior Engineering Manager, Machine Learning
Led the development of search and recommendation systems for advertising, including retrieval, ranking, and bidding. Managed deep learning models for product embeddings, CTR/CVR prediction, NLP transformers, and visual generative AI.
Jun 2022 - Dec 2023
Director Of Data Science
Oversaw ML and data operations for Goldbelly, enhancing search ranking models, multi-modal embeddings, and demand forecasting. Developed a personalized search and recommendation system, resulting in increased conversions. Fostered a data-centric culture, mentoring and expanding the data science team.
Jul 2020 - Jun 2022
Advisor
Jul 2020 - Jun 2022
Chief Data Strategist
Led data and engineering efforts at Risalto Health; focusing on both data infrastructure, and models for provider scoring and patient risk prediction. Developed a DNN transformer-based platform for medical event prediction and built a robust data platform for analyzing medical billing data. Ensured HITRUST and SOC2 compliance.
Mar 2018 - Jun 2020
Advisor
Oct 2017 - Mar 2018
Svp, Data
Built, led and grew a team of engineers with expertise across data, backend, frontend, and mobile. Oversaw a full-stack engineering team responsible for creating a consumer-facing application based on medical billing and electronic medical record data. Key achievements and highlights include the development of a full-stack patient-facing application.
Jul 2016 - Mar 2018
Head Of Engineering/Chief Architect
Built, led and grew multiple teams of talented engineers and data scientists.
2015 - 2016
~1 yr
Advisor
Oct 2014 - Jun 2015
Vice President Of Data Science
Led ML and data infrastructure, developing CTR and CVR models, search retrieval systems, and recommender systems. Achieved significant revenue lift through advanced ML models. Built and managed data science teams, making it a core revenue driver.
2011 - 2015
~4 yrs
Co-Founder
- Spinsoft was a startup aimed at better surfacing and displaying data on mobile platforms
- Worked with fellow co-founders on defining the product, strategy and business plan
- Designed a framework for better Wikipedia user experience on mobile clients
2010 - 2011
~1 yr
Research Engineer
- Worked on the Yahoo Sponsored Search team and then the Yahoo Labs teams with a focus on Sponsored Search and then Display Advertising.
- Worked heavily with the map-reduce framework (Hadoop) on large clusters (thousands of nodes and petabytes of data).
- Contributed to designing and building a prototype for the next generation display advertising platform at Yahoo, specifically focusing on how to automatically set the minimum bid needed for real time advertisement.
- Improved, analyzed and designed implementations of economic models for the search advertising platform that provided substantial revenue gains (hundreds of millions) for the company. These focused on optimizing the.
- Designed statistical models to automatically adjust bids for advertisers between publisher sites to account for differences in performance
- Created tracking and analysis tools to quickly and automatically gauge performance and pinpoint problems
2006 - 2010
~4 yrs
Consultant
Concepts Of Independence
Jul 2005 - Sep 2005
Consultant
Concepts Of Independence
Jun 2004 - Sep 2004
2 education records
Marcin Mejran education
Ms, Statistics
Stanford University
Bs, Mathematical And Computational Science
Stanford University
FAQ
Frequently asked questions about Marcin Mejran
Quick answers generated from the profile data available on this page.
What company does Marcin Mejran work for?
Marcin Mejran works for Anthropic.
What is Marcin Mejran's role at Anthropic?
Marcin Mejran is listed as Machine Learning Leader at Anthropic.
What is Marcin Mejran's email address?
AeroLeads has found 1 work email signal at @etsy.com for Marcin Mejran at Anthropic.
What is Marcin Mejran's phone number?
AeroLeads has found 5 phone signal(s) with area code 646, 917, 718, 888 for Marcin Mejran at Anthropic.
Where is Marcin Mejran based?
Marcin Mejran is based in New York City Metropolitan Area, United States, United States while working with Anthropic.
What companies has Marcin Mejran worked for?
Marcin Mejran has worked for Anthropic, Stealth Ai Startup, Concepts Of Independence Inc, Etsy, and Goldbelly.
How can I contact Marcin Mejran?
You can use AeroLeads to view verified contact signals for Marcin Mejran at Anthropic, including work email, phone, and LinkedIn data when available.
What schools did Marcin Mejran attend?
Marcin Mejran holds Ms, Statistics from Stanford University.
What skills is Marcin Mejran known for?
Marcin Mejran is listed with skills including Machine Learning, Statistics, Data Analysis, Algorithms, Hadoop, Data Mining, Programming, and Mapreduce.
Find 750M verified contacts
Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.
Start free trial