Internships at Optum. If you want an intern experience that will dramatically shape your career, consider a company that’s dramatically shaping our entire health care system. Optum, part of the UnitedHealth Group family of companies, is a leading health services and innovation company dedicated to helping make the health system work better for everyone. With more than 94,000 people collaborating worldwide, Optum combines people, technology, data and action to improve the delivery, quality and efficiency of health care. Our internship opportunities provide a view of a rapidly evolving, incredibly challenging marketplace of ideas, products and services. Here, you’ll work with some of the smartest people in the business on assignments that matter. Join us to start Caring. Connecting. Growing together.

Optum AI is expanding and seeking Research Interns for Summer 2025 who are interested in advancing the fields of artificial intelligence and machine learning and developing novel solutions that improve healthcare outcomes. We encourage individuals who are passionate about advancing the state of the art in deep learning, natural language processing, generative models, reinforcement learning, signal processing, privacy-preserving machine learning, causal inference and related areas to apply. Our team leverages diverse data sources within a healthcare organization, such as electronic medical records, activity tracker data of insured members, and claims data, to develop innovative AI applications. This internship offers the flexibility to work remotely from anywhere in the U.S., with optional travel for in-person meetings to present and celebrate your work.

Optum AI is UnitedHealth Group’s enterprise AI team. We are AI/ML scientists and engineers with deep expertise in AI/ML engineering for health care. We develop AI/ML solutions for the highest impact opportunities across UnitedHealth Group businesses including UnitedHealthcare, Optum Financial, Optum Health, Optum Insight, and Optum Rx. In addition to transforming the health care journey through responsible AI/ML innovation, our charter also includes developing and supporting an enterprise AI/ML development platform.

Optum AI team members:

• Have impact at scale: We have the data and resources to make an impact at scale. When our solutions are deployed, they have the potential to make health care system work better for everyone
• Do ground-breaking work: Many of our current projects involve cutting edge ML, NLP and LLM techniques. Generative AI methods for working with structured and unstructured health care data are continuously being developed and improved. We are working in one of the most important frontiers of AI/ML research and development
• Partner with world-class experts on innovative solutions: Our team members are developing novel AI/ML solutions to business challenges. In some cases, this includes the opportunity to file patents and publish papers about the methods we develop. We also collaborate with AI/ML researchers at some of the world’s top universities

Some topics you might work on include:

• Large language model architectures and natural language processing (NLP) for medical text
• Predicting health outcomes and quantifying uncertainty from multimodal data such as medical/claims history and digital signal data (e.g., wearable sensor data)
• Deep generative models for electronic healthcare records
• Mining digital signals from wearable medical devices and combining them with other data modalities

You’ll enjoy the flexibility to work remotely * from anywhere within the U.S. as you take on some tough challenges.

Primary Responsibilities:

This position is focused on the area of behavioral health and the responsibilities include:

• Perform research which advances the state of the art in AI and ML with applications on multimodal data present in a healthcare organization
• Implement algorithms and evaluate their performance
• Communicate results across an interdisciplinary team and explore use cases which improve real world healthcare outcomes
• Document research internally and externally, including publications in machine learning and other scientific conferences and journals and patents

You’ll be rewarded and recognized for your performance in an environment that will challenge you and give you clear direction on what it takes to succeed in your role as well as provide development for other roles you may be interested in.

Required Qualifications:

• Currently is in the process of obtaining a PhD degree in machine learning, computer science, statistics, biomedical informatics or a related field
• Hands-on experience in implementing and training machine learning algorithms or statistical analysis. Experience with NLP would be desirable
• Deep understanding of the mathematical foundations of machine learning
• Programming competence in Python, R, Java, C++, Matlab or another modern programming language. Familiarity / Expertise in various deep learning frameworks like PyTorch, Tensorflow, etc.
• Legally authorized to work in the US without any restrictions. Proof will be required
• Must be eligible to work in the U.S. without company sponsorship, now or in the future, for employment-based work authorization (F-1 students with practical training and candidates requiring H-1Bs, TNs, etc. will not be considered)

Preferred Qualifications:

• First author publications in NeurIPS, ICML, ICLR, AISTATS, UAI, AAAI, KDD, CVPR, ICCV, ECCV, ACL or other computer science conferences or medical journals
• Will be completing PhD degree within 1-2 years
• Experience working in an interdisciplinary environment, particularly across engineering and medicine
• Software tool development experience: source control (git), packaging, documentation
• Knowledge and experience working with genomic data, wearables or with medical records data
• Proven solid spoken and written communication skills 
• Demonstrated ability to work in a team

*All employees working remotely will be required to adhere to UnitedHealth Group’s Telecommuter Policy

California, Colorado, Connecticut, Hawaii, Maryland, Nevada, New Jersey, New York, Rhode Island, Washington, Washington, D.C. Residents Only: The hourly range for this role is $16.00 to $20.05 per hour. Pay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. UnitedHealth Group complies with all minimum wage laws as applicable. In addition to your salary, UnitedHealth Group offers benefits such as, a comprehensive benefits package, incentive and recognition programs, equity stock purchase and 401k contribution (all benefits are subject to eligibility requirements). No matter where or when you begin a career with UnitedHealth Group, you’ll find a far-reaching choice of benefits and incentives.

Application Deadline: This will be posted for a minimum of 2 business days or until a sufficient candidate pool has been collected. Job posting may come down early due to volume of applicants.

At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone–of every race, gender, sexuality, age, location and income–deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes - an enterprise priority reflected in our mission.

Diversity creates a healthier atmosphere: UnitedHealth Group is an Equal Employment Opportunity/Affirmative Action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, protected veteran status, disability status, sexual orientation, gender identity or expression, marital status, genetic information, or any other characteristic protected by law.

UnitedHealth Group is a drug-free workplace. Candidates are required to pass a drug test before beginning employment.