Poshmark

Staff Applied AI Scientist

Poshmark • $130K — $180K *
Redwood City, CA 94061In-Person
Information Technology
5 - 7 years of experience
Today
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Job Overview by Ladders

Qualifications

  • 5-8 years of experience in scalable data science solutions within big data environments.
  • Hands-on expertise with machine learning algorithms like CNNs, Transformers, and Vision Transformers.
  • Proficiency in programming languages including Python, SQL, and Spark (Scala/PySpark).
  • Experience with deep learning frameworks such as PyTorch or TensorFlow.
  • Strong foundation in linear algebra, statistics, probability, calculus, and A/B testing.

Responsibilities

  • Lead complete data science projects from concept to deployment for measurable business results.
  • Collaborate with ML engineers, product managers, and stakeholders for high-impact model design and deployment.
  • Develop scalable solutions across product, marketing, operations, and community.
  • Oversee the full ML development lifecycle, including data exploration and model performance optimization.
  • Explore cutting-edge AI technologies and methodologies to maintain Poshmark's competitive edge.

Benefits

  • Access to a culture of continuous learning and development through mentorship opportunities.
  • Work in a collaborative environment that values cross-functional teamwork.
  • Opportunity to drive significant business impact with innovative data science projects.
Full Job Description
About the Role
  • Lead end-to-end data science initiatives, from ideation to deployment, delivering measurable business impact through projects such as feed personalization, product recommendation systems, computer vision and GenAI.
  • Collaborate cross-functionally with ML engineers, product managers, and business stakeholders, to design and deploy high-impact models.
  • Develop scalable solutions for key areas of product, marketing, operations, and community functions.
  • Own the entire ML development lifecycle: data exploration, model development, deployment, and performance optimization.
  • Explore and experiment with emerging AI trends, technologies, and methodologies to keep Poshmark at the cutting edge.

6-Month Accomplishments:
  • Develop comprehensive understanding of Poshmark's data platform and key datasets.
  • Gained insights into challenges related to data scale and noise, implementing strategies to effectively leverage data in decision-making processes.
  • Demonstrated proficiency in Poshmark's machine learning systems by applying advanced algorithms to address a business use case.
  • Successfully prototype/enhance models aimed at improving key business metrics, contributing to data-driven solutions that support company objectives
12+ Month Accomplishments:
  • Collaborated with ML engineers and other data scientists to establish best practices for managing and maintaining machine learning models in production, enhancing system reliability.
  • Successfully led the development and deployment of model for resolving business use case(s), contributing to overall company growth and success
  • Lead the adoption and application of cutting-edge AI trends and technologies, establishing Poshmark as a pioneer in data science.
  • Mentor junior scientists/engineers, fostering a culture of continuous learning and development within the team.
What You'll Bring
  • 5-8 years of experience building scalable data science solutions in a big data environment.
  • Hands-on experience with key machine learning algorithms, including CNNs, Transformers, and Vision Transformers.
  • Proficiency in Python, SQL, and Spark (Scala or PySpark), with experience in deep learning frameworks such as PyTorch or TensorFlow.
  • Solid understanding of linear algebra, statistics, probability, calculus, and A/B testing concepts.
  • Strong problem-solving skills and the ability to communicate complex technical ideas effectively to diverse audiences, including executives and engineers.
Preferred Qualifications:
  • Experience with personalization algorithms, recommendation systems, or user behavior modeling.
  • Familiarity with Large Language Models (LLMs) and techniques such as Retrieval-Augmented Generation (RAG) or Parameter-Efficient Fine-Tuning (PEFT).

About Poshmark

Poshmark is an online marketplace that allows users to buy and sell new and used clothing, shoes, and accessories. The company was founded in 2011 and is headquartered in Redwood City, California. Poshmark's platform is designed to make it easy for users to buy and sell items, with features like in-app payments, shipping labels, and seller ratings. Poshmark has raised over $150 million in funding and has been recognized as one of the fastest-growing companies in the United States.
Learn more about Poshmark
Size
600 employees
Market Cap
$1.4 billion
Industry
Retail & Consumer Goods
Net Income
$6.1 million
Founded
2011
Revenue
$262 million
NASDAQ
POSH
* Ladders Estimates

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