Summer 2026

Applied Machine Learning Internship

Crossing Minds

Crossing Minds

1-10 employees

AI-powered B2B product recommendation platform

No salary listed

Paris, France

In Person

Category
AI & Machine Learning (1)
Required Skills
Python
Machine Learning
Pandas
NumPy
Requirements
  • Proficiency in Python, NumPy, and pandas libraries.
  • Data-oriented problem-solving skills: exploration, visualization, features extraction, and model tuning.
  • Understanding of machine learning models: objective functions, regularization, gradient descent, optimization techniques, the curse of dimensionality, etc.
  • Machine learning feature engineering such as tokenization, pre-processing and aggregation, and pre-trained embeddings.
Responsibilities
  • Work with other engineers on the applied machine learning engineering team to unlock the value of recommender systems for Crossing Minds' customers.
  • Develop solutions to challenging machine learning problems by exploring datasets, training models, and delivering great recommendations to customers.
  • Contribute to the evolution of Crossing Minds' core recommendation platform and improve its efficiency and effectiveness across different customers, datasets, and models.
  • Improve the tech stack to deliver the best recommendations with the least effort for each customer and dataset.
Desired Qualifications
  • Experience with recommender systems in the form of an internship, course, or personal project.
  • Experience with software development practices, including git proficiency, design patterns, and contributing to large code bases.
  • Experience as a Machine Learning Engineer in a professional setting.
  • Experience in customer-facing roles.

Crossing Minds builds an AI-powered recommendation platform for businesses to boost online discovery and engagement. It delivers personalized product suggestions by using deep-learning models that generate session-based recommendations from anonymized user data, integrated via APIs and SDKs to fit into existing systems. The platform emphasizes privacy by relying on anonymized data, setting it apart from some competitors and helping clients earn measurable gains. Compared with rivals, it highlights privacy, easy integration, and trackable outcomes, such as significant lifts in sales (around 96%) and click-through rates (around 120%). The goal is to help online retailers, e-commerce sites, and digital content providers increase sales and engagement through personalized experiences while maintaining user privacy.

Company Size

1-10

Company Stage

Series A

Total Funding

$13.5M

Headquarters

San Francisco, California

Founded

2017

Simplify Jobs

Simplify's Take

What believers are saying

  • DRINKS achieved 78% revenue increase per session in 2024.
  • Beam React library supports Hydrogen 2.0 for Shopify.
  • Raised $13.5 million from Index Ventures and Shopify.

What critics are saying

  • OpenAI acquired Crossing Minds; operations ceased immediately.
  • Founding team joined OpenAI, halting all development.
  • Existing clients like DRINKS migrate within 3-6 months.

What makes Crossing Minds unique

  • Privacy-focused session-based recommendations using anonymized data.
  • Deep learning for precise e-commerce product discovery.
  • Seamless API and SDK integration for B2B platforms.

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Your Connections

People at Crossing Minds who can refer or advise you

Benefits

Medical, dental, & vision insurance

Employer-matched 401(k)

20-day PTO

9-days of paid holiday

Company shutdown from 12/24 - 01/01

Professional education opportunities

Voluntary Travel Policy

Visa support, if needed

Company News

CentraLogic
Jun 30th, 2025
OpenAI Recruits Employees from Crossing Minds Amid AI Talent War

Backed by notable investors, Crossing Minds had raised over $13.5 million in its last funding round, indicating the potential and value of its technology in the AI landscape.

The American Bazaar
Jun 27th, 2025
OpenAI acquires AI recommendation startup Crossing Minds

OpenAI acquires AI recommendation startup Crossing Minds.

Swipeline
Jun 27th, 2025
OpenAI Acquires Crossing Minds for Team Transfer

OpenAI has acquired Crossing Minds, an AI-driven recommendation solutions provider for e-commerce, to transfer its founding team. Financial details were not disclosed. Founded in 2016, Crossing Minds has raised over $13.5 million, with investors like Index Ventures and Shopify. The acquisition aims to enhance OpenAI's personalization features and support its long-term AGI development plans. Crossing Minds will cease operations and no longer accept new customers.

PR Newswire
Feb 22nd, 2024
New Data Shows Drinks Ai-Powered Personalized Wine Recommendations Deliver Surge In Online Wine Sales

'DRINKS Recommend', leveraging Crossing Minds' state-of-the-art deep learning platform, delivers AI-driven wine recommendations that increase sales, customer engagementLOS ANGELES, Feb. 22, 2024 /PRNewswire/ -- DRINKS, the pioneering and leading operating system for alcohol e-commerce, today released new data from its AI-powered wine recommendation tool, DRINKS Recommend, that illustrates its ability to nearly double revenue from recommendations for online wine merchants.DRINKS Recommend was recently deployed on select pages by two major online wine retailers, selling in excess of 250,000 bottles a month. Compared to pages that offered an industry standard "most popular" set of wine recommendations, pages that implemented DRINKS Recommend delivered:Increased conversions: a 175% increase in attributed session conversionsa 175% increase in attributed session conversions Increased revenue : a 78% increase in average revenue per session: a 78% increase in average revenue per session Increased engagement: a 52% increase in click through rateDRINKS Recommend is the newest product built on DRINKS' patented AI models, called PAIR ("Predictive AI Retailing"). PAIR analyzes wine prices, regions, varietals, tasting notes, descriptions, label features, and how a product is perceived by customers to develop personalized product recommendations tailored to online merchants, their products, and their customers."We're in the business of using technology to transform all aspects of the alcohol industry, and that includes how it gets marketed online. Most people buy wine based on the label, and our deep industry experience and engineering talent enabled us to build AI-based tech that delivers accurate and personalized wine recommendations based on factors such as label variations," said Zac Brandenberg, DRINKS Co-Founder and CEO. "This is poised to be a game-changer for those on both sides of the aisle (or screen), delivering a better experience for wine shoppers and increased bottom lines for businesses who use it."Performance for DRINKS Recommend on Shopify marks first results since migrating to the Crossing Minds platformThe performance of DRINKS Recommend on Shopify marks the first results since DRINKS migrated their recommendation model training and delivery pipeline from AWS SageMaker to Crossing Minds' cutting-edge recommendation platform

MarTech Series
Aug 16th, 2023
Crossing Minds Launches AI that Makes E-commerce Product Data More Intuitive and Discoverable

Crossing Minds announced the release of a new e-commerce data enrichment product that makes e-commerce products more intuitively discoverable to customers.