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 works on the state of the art machine learning in health and has close ties to academia, including collaborations with world experts from UCLA, NYU, and others.

Some Topics You Might Work On Include

Large language model architectures for medical text
Predicting health outcomes and quantifying uncertainty from multimodal data
Deep generative models for electronic healthcare records
Using AI/ML to increase patient engagement
Using AI/ML techniques to improve clinical trials
Using AI/ML to improve patient safety and improve quality of care

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

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

Primary Responsibilities

Develop novel machine learning algorithms for prediction of health outcomes and improved care
Implement machine learning algorithms from the literature and evaluate their performance
Develop cutting edge machine learning algorithms in the areas of Deep Learning and Generative AI
Communicate the performance of the machine learning algorithms across an interdisciplinary team
Write both internal and external documentation of the novel algorithms, including publications in machine learning and other scientific conferences and journals

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

3rd year PhD student pursuing a degree in machine learning, computer science, statistics, biomedical informatics, bioinformatics, or a related field
Hands-on experience in implementing and training machine learning algorithms or statistical analysis, including for example Deep learning, MoE, NLP and Generative AI (SLM & LLMs)
Deep understanding of mathematical foundations of Deep learning and Generative AI
Programming competence demonstrated in at least one or more of these programming languages and DL frameworks: Python, Java, C++, TensorFlow and Pytorch
Proven solid communication skills, including in an interdisciplinary environment
Proven solid written communication skills of scientific material
Authorship in a minimum of three publications in high profile venues
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

Software tool development experience: source control (git), packaging, documentation
Experience working in an interdisciplinary environment, particularly across engineering and medicine
Experience with cloud computing
Experience communicating with and briefing senior executives
Knowledge and experience working with medical records or multimodal data
Demonstrated ability to work in a team
Demonstrated track record of scientific publications in machine learning or a related field
Comfortable working in a fast paced, highly collaborative and fluid work environment
All employees working remotely will be required to adhere to UnitedHealth Group’s Telecommuter Policy

The hourly range for this role is $40.00 to $60.00 per hour based on full-time employment. 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.

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