Senior AI Scientist

Vanguard; Malvern (Chester County); Hybrid; USD 120,000 - 180,000; Full time

Job summary

Vanguard in Malvern, PA is seeking a senior data scientist to lead end-to-end predictive analytics initiatives across problem formulation, modeling, validation, deployment readiness, and risk assessment.

You will mentor junior analysts, build scalable tools, and communicate findings to senior leaders. Proficiency in Python, ML frameworks, and AWS is required; a strong preference for experience with LLMs and knowledge graphs in enterprise settings.

Qualifications

• Minimum of five years of related work experience in data science or analytical roles.
• Strong experience utilizing statistical and machine learning methods required.
• Experience with large language models, knowledge graph and generative AI required.

Responsibilities

• Owns the end-to-end design, development, and execution of complex predictive modeling initiatives, from problem formulation through validation, deployment readiness, and ongoing risk assessment.
• Leads and executes deep dive diagnostic, predictive, and prescriptive analytics to support data-driven business decision making.
• Mentors and develops junior data scientists and analysts.
• Establishes and enforces data quality standards for modeling use, including diagnosing data issues, documenting assumptions and limitations, and filling data gaps in ways that balance rigor, practicality, and risk.
• Partners with senior leadership to understand and probe business processes to develop hypotheses.
• Brings structure to requests and translates requirements into an analytic approach.
• Guides research design, model evaluation, validation, and monitoring strategies, providing expert judgment on model performance, stability, and appropriate use.
• Serves as a trusted technical voice on cross-functional initiatives involving advanced analytics or machine learning.
• Builds reusable tools, frameworks, and shared resources that improve modeling efficiency, consistency, and scalability across the predictive and analytics community.
• Prepares and delivers clear, insightful presentations with recommended actions.

Skills

Data science experience

Statistical methods

Machine learning

Large language models

Knowledge graph

Generative AI

Python

AWS

Stakeholder management

Communication

Tools

TensorFlow

PyTorch

Scikit-learn

Job description

Responsibilities:

• Owns the end-to-end design, development, and execution of complex predictive modeling initiatives, from problem formulation through validation, deployment readiness, and ongoing risk assessment.

• Leads and executes deep dive diagnostic, predictive, and prescriptive analytics to support data-driven business decision making. Creates alternative model approaches to assess complex model design and advance future capabilities. Mentors and develops junior data scientists and analysts.

• Establishes and enforces data quality standards for modeling use, including diagnosing data issues, documenting assumptions and limitations, and filling data gaps in ways that balance rigor, practicality, and risk.

• Partners with senior leadership to understand and probe business processes in order to develop hypotheses. Brings structure to requests and translates requirements into an analytic approach.

• Guides research design, model evaluation, validation, and monitoring strategies, providing expert judgment on model performance, stability, and appropriate use. Serves as a trusted technical voice on cross‑functional initiatives involving advanced analytics or machine learning.

• Builds reusable tools, frameworks, and shared resources that improve modeling efficiency, consistency, and scalability across the predictive and analytics community.

• Prepares and delivers clear, insightful presentations with recommended actions. Communicates complex analytical findings and implications to business leaders.

• Participates in special projects and performs other duties as assigned.

Qualifications :

• Minimum of five years of related work experience in data science or analytical roles. Strong experience utilizing statistical and machine learning methods required. Experience with large language models, knowledge graph and generative AI required.

• Proficiency in Python programming and experience with machine learning frameworks (e.g., TensorFlow, PyTorch, Scikit-learn). Proficiency in cloud platform (such as AWS) and associated AI services and tools.

• Strong stakeholder Management and excellent communication skills.

Sponsorship

Vanguard is not offering visa sponsorship for this position.

About Vanguard

At Vanguard, we don’t just have a mission—we’re on a mission.

To work for the long-term financial wellbeing of our clients. To lead through product and services that transform our clients’ lives. To learn and develop our skills as individuals and as a team. From Malvern to Melbourne, our mission drives us forward and inspires us to be our best.

How We Work

Vanguard has implemented a hybrid working model for the majority of our crew members, designed to capture the benefits of enhanced flexibility while enabling in-person learning, collaboration, and connection. We believe our mission-driven and highly collaborative culture is a critical enabler to support long-term client outcomes and enrich the employee experience.