Demo

Staff Data Scientist

ZEFR
Marina del Rey, CA Full Time
POSTED ON 1/10/2025
AVAILABLE BEFORE 4/7/2025

What we do :

Zefr is the leading data company enabling responsible marketing in social media environments. Zefr's solutions empower brands to understand content on scaled platforms such as YouTube, Meta, TikTok, and Snap. Through its patented AI technology, Zefr offers brands and agencies more accurate and transparent targeting and measurement solutions. The company is headquartered in Los Angeles, California, with additional locations across the globe.

What you'll do :

We are hiring a Staff Data Scientist to help us build and use state of the art machine learning models using multiple terabytes of data. In this role you will implement machine learning algorithms to understand what hundreds of millions of social media posts are about. You will be working with state of the art models, including large language models, to build sophisticated compound AI systems. We are excited to welcome someone who is passionate about cutting edge research in machine learning, computer vision, natural language processing, and vector databases. We want an individual who can keep up to date with the ever-expanding field of data science. This is a role where we both expect to learn from you and have you learn from us!

Tech stack :

  • Languages : Python, SQL
  • Data Stores : Snowflake, Qdrant, DynamoDB, Scylla DB
  • Data Processing : Apache Kafka, Pandas, DBT, FastAPI
  • DevOps : Github Actions, Docker, Terraform, Kubernetes, ArgoCD, AWS, GCP, Datadog
  • MLOps : Triton Inference Server, Weights and Biases, Onnx, TensorRT, DVC
  • ML : Transformers, PyTorch, HuggingFace
  • Labeling : Voxle51, LabelBox

What we're looking for :

  • Bachelor's or Master's degree in Computer Science or related field with 7 years of professional experience
  • Experience with training classifiers, encoders, and generative models (LLMs) both from scratch and via fine tuning.
  • Fluency with Python and SQL (Specifically Snowflake)
  • Experience with distributed systems and machine learning models
  • Experience with working with LLMs and RAG systems
  • Strong foundation in data structures, algorithms and software design
  • Thorough testing and code review standards / practices
  • Strong verbal and written communication skills
  • Openness to new technologies and creative solutions
  • Benefits (for US based employees) :

  • Flexible PTO
  • Medical, dental, and vision insurance with FSA options
  • Company-paid life insurance
  • Paid parental leave
  • 401(k) with company match
  • Professional development opportunities
  • 14 paid holidays off
  • In-office, hybrid, and fully-remote work options available
  • Summer Fridays" (shorter work days on select Fridays during the summertime)
  • In-office lunches and lots of free food
  • Optional in-person and virtual events (we like to celebrate!)
  • Compensation (for US based employees) :

    The anticipated base salary for this position is between $235,000 and $250,000. Additional stock options are provided with this role. Within the range, individual pay is determined by factors such as job-related skills, experience, and relevant education or training. If your compensation expectations fall outside of this range, it may still be worth having a conversation.

    Zefr is an equal opportunity employer that embraces diversity and inclusion in the workplace. We are committed to building a team that represents a variety of backgrounds, skills, and perspectives because we know this only makes us better. We strongly encourage women, persons of color, LGBTQIA individuals, persons with disabilities, members of ethnic minorities, foreign-born residents, and veterans to apply even if you do not meet 100% of the qualifications.

    Salary : $235,000 - $250,000

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