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Foundation Model Data Engineer

SciforiumSan Francisco, CAEngineering
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Salary
$155K – $210K
Job type
Full-time
Experience
Senior · 5+ yrs
Posted
28 Sept 2026
Status
Open · checked 7d ago

About this role

Sciforium is seeking a Foundation Model Data Engineer in San Francisco, CA to direct the creation and curation of large-scale datasets for advanced AI models. This full-time position suits an experienced data scientist or machine learning professional specializing in petabyte-scale data pipelines and model training infrastructure.

Role Overview

Sciforium develops multimodal artificial intelligence models and high-efficiency serving infrastructure. The organization requires a technical professional to manage the complete data lifecycle, from initial web crawling through human-alignment datasets. This contributor will build data taxonomies, filtering criteria, and post-training pipelines that influence model safety, reasoning, and multimodal capabilities.

Key Responsibilities

Direct the complete creation of pre-training datasets for large language models, determining the appropriate mix of code, technical documents, books, and web content.
Build advanced pipelines for cleaning, exact and fuzzy deduplication, and signal extraction across petabytes of unstructured data.
Build post-training datasets including preference modeling data, multi-turn dialogues, and supervised fine-tuning instructions.
Manage the acquisition and processing of video and vision data for multimodal alignment and temporal consistency.
Write high-throughput data processing scripts using Python with multithreading and multiprocessing.
Perform statistical analysis on training data to detect biases, knowledge gaps, and quality issues.
Build pipelines for generating high-reasoning synthetic data to supplement natural datasets.

Requirements

Minimum of five years of industry experience in machine learning or data science with a history of managing datasets for foundation models.
Advanced proficiency in Python, including memory management, multithreading, and multiprocessing for large-scale operations.
Experience handling petabyte-scale datasets used to train production-grade large language models or large vision models.
Practical background in constructing large training sets from scratch using raw web crawls and domain-specific data.
Hands-on experience developing datasets for multi-turn instruction following, direct preference optimization, and reinforcement learning from human feedback.
Proficiency in large-scale data frameworks like Ray or Spark, alongside high-performance data-loading formats such as Parquet or WebDataset.

Nice to Have

Background in building large-scale image or video datasets from scratch, including pipelines similar to LAION.
Knowledge of large-scale multimodal crawling, video processing, compression, and codecs.
Experience creating complex labeling schemas for mathematical, coding, and reasoning benchmarks.
Master's degree or PhD in a quantitative field emphasizing information retrieval or data-centric artificial intelligence.

Skills and Tools

Python
Spark
Ray
Parquet
WebDataset
Common Crawl
RLHF
DPO

Salary and Benefits

Salary range of $155,000 to $210,000 per year
Equity offerings
Medical, dental, and vision insurance coverage
401(k) retirement plan
Flexible time off policy
Daily provision of lunch, beverages, and snacks

About the Company

Sciforium functions as an artificial intelligence infrastructure enterprise focused on next-generation multimodal models and proprietary serving platforms. The company receives multi-million-dollar funding and direct sponsorship from AMD, featuring hands-on engineering collaboration to build the full technology stack for frontier models and real-time software.

How to Apply

Interested candidates should submit their application through the official Sciforium careers page.

Skills and tech stack

PythonSparkRayParquetWebDatasetCommon CrawlRLHFDPOLLMLLMsComputer VisionMachine LearningFine-tuning

Questions candidates ask

What is the salary range for the Foundation Model Data Engineer role?

The salary ranges from $155,000 to $210,000, and the position includes equity offerings.

Where is the job located?

The position is located in San Francisco, CA.

How many years of experience are required?

Candidates must have 5+ years of industry experience in Data Science or Machine Learning.

What benefits are provided with this position?

Benefits include medical, dental, and vision insurance, a 401k plan, flexible time off, daily lunch, snacks, beverages, and equity.

Is a specific educational degree mandatory?

A Master's or PhD in a quantitative field is listed under nice-to-haves rather than a strict requirement.

Ready to apply?

The application is on the official Sciforium careers page.

Apply on company site