USA) Senior, Machine Learning Engineer

Role summary:

Walmart seeks a Senior Machine Learning Engineer to design, develop, and deliver scalable ML solutions that address complex business challenges. This role involves collaborating with cross-functional teams to help implement, test, and maintain ML models and pipelines while ensuring compliance with security and governance standards. The successful candidate will lead technical efforts across the ML lifecycle, including feature engineering, model evaluation, deployment, and monitoring.

They will also drive innovation, and uphold high standards of quality and integrity to support Walmart’s mission of delivering value to customers and stakeholders.

The Walmart team combines expertise in data science and computer vision to drive innovation with a strong emphasis on safety and security. They focus on fraud prevention, threat detection, and digital risk management while supporting cloud transformation efforts. Leveraging advanced analytics and data-driven insights, the team enhances decision-making and operational reliability. Collaboration and continuous improvement are central to their approach, fostering a culture committed to accuracy, security, and sustainable growth across the organization.

This team plays a key role in maintaining a secure environment and stakeholder confidence through technical excellence and innovation.

• Collaborate with CV scientists, data scientists, and product teams to deliver machine learning pipelines and model integrations.
• Design and develop scalable ML systems using appropriate algorithms and frameworks.
• Implement, test, and support ML services, APIs, and data pipelines ensuring quality and reliability.
• Apply MLOps practices including CI/CD, model versioning, and automated retraining for sustained performance.
• Conduct rigorous model evaluation, monitoring, and maintenance to address drift and performance issues.
• Mentor team members on coding standards, pipeline best practices, and model evaluation techniques.
• Ensure ML solutions comply with security, privacy, and enterprise governance standards.
• Participate in technical discussions to enhance system scalability, maintainability, and compliance.

• Proven expertise in designing, developing, and deploying scalable machine learning pipelines using frameworks such as Tensor Flow, PyTorch, and Scikit-learn.
• Strong proficiency in programming languages including Python, SQL, Java, C++, or R for production-ready ML applications.
• Experience with MLOps practices including CI/CD, model versioning, automated retraining, and telemetry to ensure model reliability and performance.
• Ability to implement secure, compliant ML pipelines adhering to enterprise AI governance standards.
• Skilled in model evaluation, hyperparameter optimization, and monitoring to maintain accuracy and performance.
• Demonstrated technical leadership, mentoring, and collaboration across cross-functional teams.
• Familiarity with cloud-native architectures and platform design for ML solutions, NVidia Deepstream architecture is a plus.

At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet. Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company-paid life insurance. Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting. Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more.

You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable. For information about PTO, see  Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam’s Club facilities.

Programs range from high school completion to bachelor's degrees, including English…