Sr. Data Scientist

Location: San Francisco, California, US
Recruiter: University Of California Los Angeles
Date posted: Sunday, November 9, 2025

 

Job Description:
Job Description

Brief Description:

NexTier's Completions Data Science team brings together talented, driven professionals who turn complex operational data into clear insights and empower our organization to make smarter, data-backed decisions every day. You will work specifically with Operations and Maintenance departments to develop physics-driven models and reliability frameworks that predict equipment behavior and optimize maintenance strategies for our frac fleet.

Detailed Description:

In this role you will collaborate with Program Managers to lead the strategy and execution of hybrid physics and machine-learning models for equipment reliability. You will design and run first-principles simulations, integrate high-frequency telemetry into digital twins, deploy scalable model pipelines in the cloud and validate predictions against field data.

Key Responsibilities:

• Define and guide the development of physics-ML reliability models (Weibull analysis, survival modeling, FMEA)
• Perform fluid-mechanics and mechanical simulations in Python or MATLAB and integrate outputs with telemetry streams
• Architect, deploy and monitor model training and serving pipelines on GCP AI Platform or Dataiku
• Establish validation protocols by coordinating with subject-matter experts to calibrate model assumptions
• Partner with maintenance, operations and field teams to align modeling efforts with business needs and data availability
• Identify new digital-twin use cases and build proof-of-concepts for early-warning systems and maintenance optimization
• Present technical findings to operations leadership, maintenance planners and engineering management

Job Requirements:

• Prior experience in equipment reliability, predictive maintenance or physics-based modeling in oil and gas
• Expert programming skills in Python (SciPy, NumPy) for simulation and model development
• Strong foundation in reliability engineering methods such as Weibull analysis, survival modeling and FMEA
• Strong communication skills with the ability to explain complex models to non-technical stakeholders
• Ability to manage multiple priorities and deliver results on time

Minimum Qualifications:

• Bachelor's degree in Mechanical Engineering, Petroleum Engineering, Physics or related field
• 5+ years of experience applying physics-based modeling or reliability engineering in industrial settings
• 3+ years building and deploying data-science algorithms on cloud platforms (AWS, GCP or Azure)
• 3+ years developing simulation code in Python

Preferred Qualifications:

• Master's degree or higher in a quantitative engineering or physical science discipline
• Research publications or patents in equipment reliability, preventative maintenance or related areas
• Prior field experience in equipment maintenance
• Experience integrating physics-based models with machine-learning frameworks such as TensorFlow or PyTorch

Working Condition:

Work is primarily in a climate controlled / office environment with minimal safety / health hazard potential. The employee is regularly required to sit, stand, or walk with occasional lifting (overhead, waist level) from floor, bending and frequent near vision use for reading and use of computer, telephone, and other office equipment.

About Us

The Evolving Oil Field Demands Evolving Service Providers

NexTier is a leading provider of integrated completions that employs sustainable practices and equipment to support our customers' ESG goals while accelerating production in the most demanding US land basins.

 

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