CrawlJobs Logo
Walmart Logo Walmart · IT - Software Development

Senior, Data Scientist

United States of America, Sunnyvale 117000.00 - 234000.00 USD / Year · Job Posted May 09, 2026
Apply Position
Job Link Share

Job Description

Join Walmart and your work could help over 275 million global customers live better every week. Yes, we are the Fortune #1 company. But you’ll quickly find we’re a company who wants you to feel comfortable bringing your whole self to work. A career at Walmart is where the world’s most complex challenges meet a kinder way of life. Our mission spreads far beyond the walls of our stores. Join us and you'll discover why we are a world leader in diversity and inclusion, sustainability, and community involvement. From day one, you’ll be empowered and equipped to do the best work of your life.

Job Responsibility

  • Design Multi-Modal Evaluation Frameworks: Develop and validate novel evaluation metrics for non-deterministic outputs, specifically video, image, for 3D assets, and audio.
  • Build 'AI-as-a-Judge' Systems: Fine-tune Vision-Language Models (VLMs) and Reward Models to serve as automated evaluators, creating scalable proxies for human judgment.
  • Lead Experimentation & Causal Inference: Design and analyze A/B tests to measure the downstream business impact of GenAI content
  • apply causal inference techniques to understand how specific asset attributes drive user engagement.
  • Orchestrate Human-in-the-Loop (RLHF) Strategy: Define protocols for human evaluation, managing the relationship with annotation partners to create high-quality 'Golden Sets' for benchmarking and Reinforcement Learning from Human Feedback (RLHF).
  • Strategic Cross-Functional Partnership: Collaborate with ML Engineers and Product Managers to establish 'Go/No-Go' model launch criteria based on latency, safety, and perceptual quality standards.
  • Research & Innovation: Stay current with state-of-the-art research in perceptual quality (e.g., FID, CLIP scores, VQA) and implement advanced techniques to detect hallucinations, artifacts, or bias in generated content.

Requirements

  • Master's degree in Computer Science with a specialization in Computer Vision, Machine Learning, or equivalent practical experience.
  • 3+ years of experience with machine learning algorithms and tools.
  • Strong foundation in statistical analysis, experimental design (A/B testing), and causal inference.
  • Hands-on experience with Generative AI evaluation (e.g., using LLMs/VLMs for evaluation, computing FID/IS/CLIP scores, or designing perceptual studies).
  • Proficiency in Python and deep learning frameworks (PyTorch, TensorFlow) for analyzing model outputs and building evaluation pipelines.
  • Experience processing unstructured data (image, video, 3D meshes) for analytical purposes.

Nice to have

  • PhD in Machine Learning, Computer Science, or a related technical field.
  • Experience designing Reward Models for RLHF pipelines.
  • Deep understanding of 3D geometry processing (meshes, point clouds) and how to mathematically quantify '3D quality' (e.g., mesh manifoldness, texture resolution).
  • Experience with Crowdsourcing platforms and designing instructions for subjective human evaluation.
  • Publication record or practical experience in Computational Photography, Computer Vision Quality Assessment, or Psychophysics.
  • Experience with Big Data tools (Spark, SQL, BigQuery) for analyzing large-scale experiment results.

What we offer

  • 401(k) match
  • stock purchase plan
  • paid maternity and parental leave
  • PTO
  • multiple health plans
  • medical
  • vision
  • dental
  • company-paid life insurance
  • short-term and long-term disability
  • company discounts
  • Military Leave Pay
  • adoption and surrogacy expense reimbursement
  • Live Better U education benefit program
Walmart - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Senior, Data Scientist

8 matching positions

Data Scientist / Senior Data Scientist

Seeking multiple experienced Data Scientists & Senior Data Scientists with exper...
Location
Location
Australia , Melbourne
Salary
Salary:
140000.00 - 229000.00 AUD / Year
https://www.randstad.com Logo
Randstad
Expiration Date
July 03, 2026
Flip Icon
Requirements
Requirements
  • Deep, hands on experience in Data & AI Science
  • Experience utilising ML models to support complex, high impact solutions
  • Experience with AI coding tools
  • Python Experience
  • Ability to present to and engage with a range of senior stakeholders
  • Provide a deeper contribution to solution design and architecture
  • Ability to be a thought leader in your team
Job Responsibility
Job Responsibility
  • Contribute to the design, build and deployment of agentic solutions across a range of projects that support the broader organisation and their customers
  • Fulltime
Read More
Arrow Right

Data Scientist / Senior Data Scientist

Berkshire Hathaway Specialty Insurance (BHSI) has an exciting opportunity for Da...
Location
Location
United States , Boston, MA/San Ramon, CA
Salary
Salary:
100000.00 - 160000.00 USD / Year
bhspecialty.com Logo
Berkshire Hathaway Specialty Insurance
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Advanced degree (Master’s or Ph.D.) in Statistics, Actuarial Science, Applied Mathematics, Data Science, Engineering, or other equivalent quantitative discipline
  • Strong academic foundation in probability theory, statistical inference, stochastic processes, and Bayesian statistics
  • Deep expertise in probability models commonly used in insurance (e.g., frequency–severity models, GLMs, loss distributions)
  • Strong applied statistics skills for: Risk modeling
  • Predictive analytics
  • Pricing & underwriting analytics
  • Catastrophe exposure analysis
  • Proficiency in statistical and machine learning techniques, including: Regression (GLM, GAM, GAMMs)
  • Time-series forecasting
  • Gradient boosting, random forests, and other tree-based models, neural networks models
Job Responsibility
Job Responsibility
  • Evaluate and develop insights into large and diverse data sets from claims, hazard models, structural analysis, geospatial sources, and various other public/proprietary datasets
  • Develop and maintain expertise in advanced data science, machine learning, and artificial intelligence techniques, and their application to understanding risk
  • Work with domain experts across teams and perils to enhance our use of available data
  • Propose and execute innovative solutions to insurance problems that directly impact BHSI underwriting decisions
  • Conduct in-depth evaluation of vendor models, research and develop internal views of exposure and risks, consult on account-specific risk analyses, and develop internal tools to facilitate account underwriting decision-making and other related activities
What we offer
What we offer
  • Comprehensive Health, Dental and Vision benefits
  • Disability Insurance (both short-term and long-term)
  • Life Insurance (for you and your family)
  • Accidental Death & Dismemberment Insurance (for you and your family)
  • Flexible Spending Accounts
  • Health Reimbursement Account
  • Employee Assistance Program
  • Retirement Savings 401(k) Plan with Company Match
  • Generous holiday and Paid Time Off
  • Tuition Reimbursement
  • Fulltime
Read More
Arrow Right

Data Scientist / Senior Data Scientist

Berkshire Hathaway Specialty Insurance (BHSI) has an exciting opportunity for Da...
Location
Location
United States , Atlanta, GA/Boston, MA/San Ramon, CA
Salary
Salary:
100000.00 - 160000.00 USD / Year
bhspecialty.com Logo
Berkshire Hathaway Specialty Insurance
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Ph.D. or M.S. in data science, civil engineering, atmospheric science, actuarial science, computer science, mathematics, or a related field
  • 3-6 years of industry experience is preferred and required for the Senior Data Scientist level role
  • Advanced knowledge of probability theory, statistics, and machine learning methods is required
  • Practical experience in insurance, catastrophe model development, cyber and casualty risk modeling, and/or exposure data collection is preferred
  • Experience applying advanced statistical techniques and machine learning to large data sets, especially in areas of structural performance, natural catastrophe hazard, building exposure data, geospatial data, or insurance claims data
  • Familiarity with large language models (LLMs), retrieval-augmented generation (RAG), and their application in data-driven workflows is a plus
  • Strong written and verbal communication skills
  • Strong programming skills in Python (preferred), R, and SQL
  • Experience and understanding of relational and non-relational databases preferred
  • Comfort working within git-based version-control environments
Job Responsibility
Job Responsibility
  • Evaluate and develop insights into large and diverse data sets from claims, hazard models, structural analysis, geospatial sources, and various other public/proprietary datasets
  • Develop and maintain expertise in advanced data science, machine learning, and artificial intelligence techniques, and their application to understanding risk
  • Work with domain experts across teams and perils to enhance our use of available data
  • Propose and execute innovative solutions to insurance problems that directly impact BHSI underwriting decisions
What we offer
What we offer
  • Comprehensive Health, Dental and Vision benefits
  • Disability Insurance (both short-term and long-term)
  • Life Insurance (for you and your family)
  • Accidental Death & Dismemberment Insurance (for you and your family)
  • Flexible Spending Accounts
  • Health Reimbursement Account
  • Employee Assistance Program
  • Retirement Savings 401(k) Plan with Company Match
  • Generous holiday and Paid Time Off
  • Tuition Reimbursement
  • Fulltime
Read More
Arrow Right

Senior Data Scientist, Data Management

Senior Data Scientist, Data Management - Remote, US. ICON plc is a world-leading...
Location
Location
United States , Raleigh, Blue Bell
Salary
Salary:
Not provided
iconplc.com Logo
iconplc
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Domain expertise in one or more targeted areas of the Revenue Cycle Management processes
  • Proficient in deterministic and probabilistic linkage concepts/methodologies to support patient journeys derived from anonymized RCM data
  • Advanced degree in a relevant field such as data science, statistics, computer science, or mathematics
  • Extensive experience in data science, with a strong track record of developing and implementing complex models and analyses
  • Proficiency in statistical analysis, machine learning techniques, and data visualization tools, with expertise in programming languages such as Python or R
  • Excellent problem-solving skills and the ability to manage multiple projects and priorities effectively
  • Outstanding communication and interpersonal skills, with the ability to present complex data insights clearly and collaborate with stakeholders across the organization
Job Responsibility
Job Responsibility
  • Designing and implementing advanced data models and algorithms to solve complex business problems and drive strategic insights
  • Conducting in-depth analyses of large and diverse data sets to uncover patterns, trends, and correlations that inform decision-making
  • Collaborating with cross-functional teams to understand business needs, translate them into analytical solutions, and communicate findings effectively
  • Developing and deploying machine learning models and statistical techniques to enhance predictive capabilities and optimize business processes
  • Providing thought leadership on data science best practices and emerging technologies to drive innovation and continuous improvement
What we offer
What we offer
  • Various annual leave entitlements
  • A range of health insurance offerings to suit you and your family’s needs
  • Competitive retirement planning offerings to maximize savings and plan with confidence for the years ahead
  • Global Employee Assistance Programme, LifeWorks, offering 24-hour access to a global network of over 80,000 independent specialized professionals who are there to support you and your family’s well-being
  • Life assurance
  • Flexible country-specific optional benefits, including childcare vouchers, bike purchase schemes, discounted gym memberships, subsidized travel passes, health assessments, among others
Read More
Arrow Right

Senior Data Scientist - Data Foundations & AI

You’ll be a Senior Data Scientist on the Data Foundation & AI team at Plaid. In ...
Location
Location
United States , San Francisco
Salary
Salary:
174000.00 - 260400.00 USD / Year
plaid.com Logo
Plaid
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of experience in data science or analytics roles
  • Experience defining evaluation and metrics frameworks
  • Strong SQL and Python skills
  • Experience investigating ambiguous problems end-to-end
  • Ability to operate independently and influence stakeholders
  • Clear communication of trade-offs and insights
  • Ability to thrive in a collaborative environment, working with both technical and non-technical partners to drive measurable outcomes
Job Responsibility
Job Responsibility
  • Defining quality metrics that shape product direction
  • Turning ambiguous customer complaints into structured investigations
  • Building evaluation systems that scale
  • Measuring AI system effectiveness in a principled way
  • Automating workflows using modern AI tools
  • Influencing roadmap decisions through data
What we offer
What we offer
  • medical, dental, vision, and 401(k)
  • equity and/or commission
Read More
Arrow Right

Senior Data Scientist, Data Management

Senior Data Scientist, Data Management - Office Based in Blue Bell, PA or Raleig...
Location
Location
United States , Blue Bell, PA or Raleigh, NC
Salary
Salary:
Not provided
iconplc.com Logo
iconplc
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Domain expertise in one or more targeted areas of the Revenue Cycle Management processes
  • Proficient in deterministic and probabilistic linkage concepts/methodologies to support patient journeys derived from anonymized RCM data
  • Advanced degree in a relevant field such as data science, statistics, computer science, or mathematics
  • Extensive experience in data science, with a strong track record of developing and implementing complex models and analyses
  • Proficiency in statistical analysis, machine learning techniques, and data visualization tools, with expertise in programming languages such as Python or R
  • Excellent problem-solving skills and the ability to manage multiple projects and priorities effectively
  • Outstanding communication and interpersonal skills, with the ability to present complex data insights clearly and collaborate with stakeholders across the organization
  • Located in or around Blue Bell, PA or Raleigh, NC
Job Responsibility
Job Responsibility
  • Designing and implementing advanced data models and algorithms to solve complex business problems and drive strategic insights
  • Conducting in-depth analyses of large and diverse data sets to uncover patterns, trends, and correlations that inform decision-making
  • Collaborating with cross-functional teams to understand business needs, translate them into analytical solutions, and communicate findings effectively
  • Developing and deploying machine learning models and statistical techniques to enhance predictive capabilities and optimize business processes
  • Providing thought leadership on data science best practices and emerging technologies to drive innovation and continuous improvement
What we offer
What we offer
  • Various annual leave entitlements
  • A range of health insurance offerings to suit you and your family’s needs
  • Competitive retirement planning offerings to maximize savings and plan with confidence for the years ahead
  • Global Employee Assistance Programme, LifeWorks, offering 24-hour access to a global network of over 80,000 independent specialized professionals who are there to support you and your family’s well-being
  • Life assurance
  • Flexible country-specific optional benefits, including childcare vouchers, bike purchase schemes, discounted gym memberships, subsidized travel passes, health assessments, among others
  • Fulltime
Read More
Arrow Right

Senior Data Scientist, Provider Data Science

As a Senior Data Scientist, you will join our Data team to help us build and mai...
Location
Location
United States
Salary
Salary:
166500.00 - 185000.00 USD / Year
thymecare.com Logo
Thyme Care
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Deep experience working with healthcare data such as electronic health records, claims, or prior auth
  • Expertise in analytics, data modeling, and data transformation
  • Deep expertise in dbt and SQL, with experience designing, rebuilding, and owning complex data models and pipelines
  • Experience with large healthcare datasets, ideally in a healthcare-focused technology startup, health plan, or provider group
  • A working knowledge of Python or R and experience with Looker or similar BI tools for data analysis and visualization is a plus
  • Previous direct involvement drug or Medicare Part D data is a plus
Job Responsibility
Job Responsibility
  • Model data, create visualizations to report to stakeholders, and deliver insights that drive action
  • Partner with Product, Engineering, Operations, and Data Science teams to define and lead improvements to data pipelines
  • Own efforts to reduce latency between data and applications, designing and building scalable data architecture and healthcare data models for pharmacy interventions and provider incentive programs
  • Gain deep understanding of core data architecture and lead improvements to data pipelines
  • Own and lead development of data models for analyzing EMR drug delivery and drug economics
  • Establish key KPIs and reporting standards to make operations more efficient
  • Partner with stakeholders to translate business requirements into technical plans
  • Lead development of utilization and quality metrics and serve as domain expert
  • Leverage data assets for business opportunities and strategic initiatives
What we offer
What we offer
  • Equity
  • Benefits
  • Fulltime
Read More
Arrow Right

Senior Data Scientist, AI & Model Risk

It all started with an idea at Block in 2013. Initially built to take the pain o...
Location
Location
United States , Bay Area
Salary
Salary:
139000.00 - 225000.00 USD / Year
cash.app Logo
Cash App
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • A minimum of 5 years of related experience with a Bachelor’s degree in a quantitative field
  • or 3 years and a Master’s degree
  • or a PhD without experience
  • or equivalent work experience in risk management, model risk management, or AI risk management
  • Proficiency in Python or similar languages for evaluating AI system behavior, writing test scripts, or analyzing model outputs
  • Strong understanding of generative AI architectures
  • Including LLMs, transformer models, RAG systems, and agentic AI, plus hands-on experience interacting with and critically evaluating these systems, sufficient to assess design decisions, output quality, and limitations
  • Understanding of interagency model risk management principles, including SR 26-2
  • Knowledge of AI testing methodologies, ex. functional testing, bias testing, adversarial testing, and performance monitoring plus familiarity with data privacy and security principles (encryption, access controls, data classification)
  • Excellent written and verbal communication and the ability to translate complex technical AI concepts for non-technical stakeholders, senior management, and regulators
Job Responsibility
Job Responsibility
  • Lead end-to-end AI Risk Assessments for generative AI and LLM use cases across the Bank
  • Embedding in Block's enterprise-wide GenAI review process, coordinating cross-functional SMEs (Legal, Compliance, InfoSec, Data Governance, MRM, ERM, BRC, TPRM, Financial Crimes), and managing timelines to ensure reviews are completed within SLA
  • Review AI system design and documentation
  • Including retrieval sources, assumptions, limitations, fallback plans, guardrail configurations, and change management procedures — across banking use cases such as fraud detection, BSA/AML compliance, credit decisioning, and customer-facing applications, ensuring governance controls are commensurate with each use case's risk profile
  • Assess pre-deployment testing for adequacy inclusive of output integrity, hallucination detection, boundary and edge case testing, ethical and safety guardrails, bias testing, A/B testing, volume testing, and UAT — designing and conducting independent testing as needed
  • Evaluate ongoing monitoring plans for comprehensiveness - including accuracy, hallucination rates, drift detection, sensitive data controls, reliability metrics, CSAT, acceptable performance ranges, and documented remediation procedures
  • Develop and maintain templates, tools, and procedures to support the effectiveness and scalability of the AI Risk Governance Program
  • Monitor the evolving regulatory landscape for AI in banking — including FFIEC IT Examination Handbook standards, FDIC Financial Institution Letters, interagency statements, and the anticipated RFI on AI model risk management referenced in SR 26-2 — and incorporate emerging guidance into the AI risk governance program
  • support SFS's response to regulatory inquiries as needed
What we offer
What we offer
  • Remote work
  • medical insurance
  • flexible time off
  • retirement savings plans
  • modern family planning
  • Fulltime
Read More
Arrow Right