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Senior Data Scientist
Zefr
New York, CA
Category
Data Analyst
Apply for Job
Remote
Job Description
Zefr is hiring a Senior Data Scientist to fine-tune, optimize, and deploy Large Language Models for multimodal social media content understanding. The role requires experience with LLM inference optimization, fluency in Python and SQL, and a strong foundation in data structures, algorithms, and software design.
Requirements
Bachelor's or Master's degree in Computer Science or related field
4+ years of professional experience in machine learning or data science
Hands-on experience fine-tuning large language models
Experience with LLM inference optimization
Track record of taking ML models from research to production at scale
Fluency with Python and SQL
Experience working with multimodal models and features
Familiarity with cost/quality tradeoff analysis across LLM providers and self-hosted models
Experience with distributed systems and GPU-accelerated workloads
Strong foundation in data structures, algorithms, and software design
Thorough testing and code review standards/practices
Strong verbal and written communication skills
Experience working with Autonomous Coding Agents
Openness to new technologies and creative solutions
Benefits
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
13 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
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