Senior ML Scientist - AWS SageMaker & LLMs

Valiant Technologies LLC; San Jose (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Valiant Technologies LLC is seeking a Senior Data Scientist / ML Engineer with AWS expertise in San Jose, CA. The role focuses on building large-scale AI pipelines, from data curation to model fine-tuning and deployment on SageMaker.

You will lead distributed training, RLHF-style methods, and ensure data privacy and secure production inference while communicating clearly with stakeholders.

Qualifications

• Experience with PySpark and Hadoop for large corpora.

Responsibilities

• Turn unstructured and structured traveler and catalog data into narrative text documents and synthetic data at scale (millions of docs).
• Feature and context engineering: decide what information goes into each document.
• Large-scale distributed training on Amazon SageMaker AI (HyperPod).
• Fine-tuning: LoRA/QLoRA adapters; supervised training; reinforcement learning for ranking.
• Deep learning modeling: architectures, ranking heads, multi-task setups.
• Inference and deployment: low-latency, cost-efficient serving on AWS.
• Evaluation and error analysis: create evaluation sets and report findings to customer and AWS team.
• Data privacy: handling customer data safely including removals.

Skills

Spark PySpark

Hadoop Hive

SageMaker

LoRA/QLoRA

PyTorch

LLM inference

Data privacy AWS

Communication

MLOps

Tools

HyperPod

Bedrock

IAM

KMS

Lake Formation

Job description

Valiant Technologies LLC is seeking a Senior Data Scientist / ML Engineer with AWS expertise in San Jose, CA. The role focuses on building large-scale AI pipelines, from data curation to model fine-tuning and deployment on SageMaker.

You will lead distributed training, RLHF-style methods, and ensure data privacy and secure production inference while communicating clearly with stakeholders.