Senior Data Scientist + Gen AI

Valiant Technologies LLC; Houston (TX); On-site; USD 83,000 - 118,000; Full time

Job summary

Valiant Technologies LLC in Houston, TX seeks a Senior Data Scientist with Gen AI expertise for a 6-month contract. You will build production-grade Generative AI systems with emphasis on reliability, observability, and secure workflows.

Hands-on Python, ML, AWS, and Airflow are required, with experience in prompt engineering, tool orchestration, and governance. The role offers a $73/hour bill rate (C2C) and remote-work options are not specified.

Qualifications

• Experience building production-grade Generative AI systems.
• Strong Python production experience.
• Proven skills in prompt engineering and tool orchestration.

Responsibilities

• Build production-grade Generative AI systems with emphasis on reliability and scalability.
• Design and optimize prompt engineering pipelines and tool integration.
• Set up ground truth, evaluation metrics, and hallucination rate measurements.
• Use LLMs as judges with human review and manage context and grounding validation.
• Coordinate workflows with Airflow and ensure RBAC and security practices.

Skills

Python

Large Language Models

Gen AI

Prompt Engineering

Machine Learning

AWS

Confluence

Jira

Tools

Airflow

AWS Bedrock

Confluence

Jira

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

• Job Title: Senior Data Scientist + Gen AI
• Location: Houston, TX
• Duration: 6 Months
• Bill Rate: $73/hour (C2C)
• Job Type: W-2, 1099, C2C
• Client: To Be Discussed Later
• Work Authorization: US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, Other

Build production-grade Generative AI systems with emphasis on:

• Prompt engineering (system prompts, tool prompts, function calling, versioning with evaluations)
• Evaluation & observability , including:
• Ground truth setup
• Confusion metrics
• Hallucination rate measurement
• LLM-as-judge with human review
• Context management
• Faithfulness & grounding validation
• Agentic workflows
• Multi-step reasoning
• Tool orchestration
• Agent success rate measurement
• AWS Bedrock
• Workflow orchestration
• Airflow
• Security & privacy
• RBAC
• Strong Python expertise with real production experience

Success Criteria:

• Measurable quality lift (accuracy, faithfulness, confusion metrics)
• Reduced hallucinations

Skills:

Large Language Models, AWS, Prompt Engineering, Python, Machine Learning, Gen AI, Confluence, Jira

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.