Job details

Staff Data Scientist

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.

ZEFR Glassdoor Company Review

3.7

ZEFR DE&I Review

3.67

CEO of ZEFR

Zach James and Rich Raddon

Approve of CEO

Average salary estimate

$242500 / YEARLY (est.)

min

max

$235000K

$250000K

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What You Should Know About Staff Data Scientist, ZEFR

At Zefr, we’re excited to welcome a Staff Data Scientist to our innovative team in Marina del Rey! As a leading data company, we empower brands to navigate the ever-evolving landscape of social media marketing. In this pivotal role, you’ll leverage your expertise to build and refine cutting-edge machine learning models, analyzing massive datasets and understanding social media content at a granular level. You’ll work closely with large language models and contribute to creating sophisticated AI systems that drive enhanced targeting and measurement solutions for platforms like YouTube, Meta, TikTok, and Snap. We’re looking for someone with a robust background in machine learning, computer vision, and natural language processing. Your work will not only help us push the boundaries of technology but also allow for a collaborative learning environment where we can both exchange knowledge and innovate. If you're ready to dive into the world of data science and enjoy a workplace that values creativity and open communication, we’d love to have you on board at Zefr where your skills in Python, SQL, and extensive knowledge of machine learning will make a significant impact. Join us as we continue to shape the future of responsible marketing in social media!

Frequently Asked Questions (FAQs) for Staff Data Scientist Role at ZEFR

What are the main responsibilities of the Staff Data Scientist at Zefr?

As a Staff Data Scientist at Zefr, your primary responsibilities will include developing high-performance machine learning models, analyzing extensive datasets, and implementing advanced algorithms to gain insights into social media content. This role emphasizes collaboration with team members to advance our AI capabilities and ensure the integrity and authentic performance of our solutions.