Data Science Intern

Milliman's Seattle healthcare practice is seeking a motivated Data Science Intern to join our team. As an intern, you will gain hands-on experience working with large datasets, developing predictive models, and delivering actionable insights for real-world business challenges. This is a unique opportunity to work alongside experienced data scientists, actuaries, and consultants to impact client outcomes. While somewhat flexible on timing, we expect the intern to work onsite from our Seattle office for a 12-week period during the December 2025 - March 2026 timeframe.

Milliman's Seattle Health Practice serves a wide variety of organizations, including insurance companies, health plans, state and federal agencies, healthcare providers, reinsurance companies, providers, Accountable Care Organizations (ACOs), and employers. The staff consists of 180+ actuarial professionals in addition to healthcare consultants, IT, Administrative, and other non-actuarial staff.

By joining Milliman, you will be working with some of the most experienced, most capable people in the health industry. Through our mentor program, you will have a dedicated colleague available to help guide your career growth. For the right candidate, these opportunities will help you grow professionally while enjoying the work you do.

• Assist in the collection, cleaning, and preprocessing of large datasets from various sources, including APIs and cloud-based platforms
• Support the development and implementation of statistical and machine learning, and AI models to address real-world business challenges
• Conduct exploratory data analysis and data visualization to identify trends, patterns, and actionable insights
• Collaborate with team members to solve complex business problems using data-driven and software engineering approaches
• Document methodologies, code, processes, and findings in a clear and organized manner, following best practices for reproducibility and knowledge sharing
• Present results, insights, and recommendations to team members and stakeholders through written reports and presentations
• Participate in team meetings, brainstorming sessions, code reviews, and knowledge-sharing activitie

• Working towards or completed a bachelor's degree in Data Science, Computer Science, Mathematics, Statistics, Actuarial Science, Economics, or another related field
• Strong analytical and problem-solving skills
• Experience with programming languages such as Python and/or R for data analysis and modeling
• Familiarity with SQL or other database querying languages; experience with data integration and transformation a plus

• Detail-oriented with strong organizational and documentation skills
• Excellent written and verbal communication skills; able to explain technical concepts to non-technical audiences
• Collaborative mindset and strong teamwork abilities
• Eagerness to learn new technologies and adapt in a fast-paced, dynamic environment
• Demonstrated initiative and ability to work independently when required

• Previous internship or project experience in data science, analytics, or actuarial work
• Experience with data visualization and dashboarding tools (e.g., Power BI, Tableau, R Shiny, or equivalent)
• Proficiency with Excel and/or VBA for data analysis and reporting
• College GPA of 3.3 or higher

This position is based out of the Milliman office in Seattle, WA. Applicants must be willing to work onsite full-time.

This job posting is expected to close on November 3, 2025.

The salary range for this position is $21- $38 per hour, depending on relevant factors, including but not limited to, education, work experience, skills, certifications, location, etc.

We offer competitive benefits which include the following based on plan eligibility:

• Employee Assistance Program (EAP) - Confidential support for personal and work-related challenges.
• 401(k) Plan - When an employee reaches 1,000 hours worked within 12 consecutive months, they become eligible for a 401(k) plan that includes a company matching program and profit-sharing contributions.
• Paid Time Off (PTO) - Begins accruing on the first day of work; Interns, Temporary, and Seasonal Employees will earn PTO each pay period, based on 1 hour for every 30 hours worked.
• Transportation - Pre-tax savings for eligible transit and parking expenses.

Independent for over 75 years, Milliman delivers market-leading services and solutions to clients worldwide. Today, we are helping companies take on some of the world's most critical and complex issues, including retirement funding and healthcare financing, risk management and regulatory compliance, data analytics and business transformation.

Milliman invests in skills training and career development and gives all employees access to a variety of learning and mentoring opportunities. Our growing number of Milliman Employee Resource Groups (ERG's) are employee-led communities that influence policy decisions, develop future leaders, and amplify the voices of their constituents. We encourage our employees to give back to their varied professions, including leadership in professional organizations. Please visit our web site (https://www.milliman.com/en/social-impact) to learn more about Milliman's commitments to our people, diversity and inclusion, social impact and sustainability.

Through a team of professionals ranging from actuaries to clinicians, technology specialists to plan administrators, we offer unparalleled expertise in employee benefits, investment consulting, healthcare, life insurance and financial services, and property and casualty insurance.

All qualified applicants will receive consideration for employment, without regard to race, color, religion, sex, sexual orientation, national origin, disability, or status as a protected veteran.

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