About the team: Uber Denmark is the powerhouse behind the core infrastructure that runs Uber globally. We don't just build mobile apps; we build the systems that deploy and run every microservice, database, and data workload across the world. For a PhD intern, this means your research isn't destined for a shelf, it's destined for production at a scale few companies can match. You will be embedded in a team of specialists to tackle bold, unsolved problems in computer science. As a PhD intern, you will own a project from ideation to implementation, with the explicit goal of bridging the gap between novel research and production impact. You'll work alongside a concentrated group of PhDs and engineers in Aarhus who speak your language, providing a high-caliber peer group that understands how to translate academic rigor into industry-shaping technology. About the Role: This role is for the PhD student who thrives in the gap between "theoretically possible" and "operationally reliable." You will join a stellar team of engineers in Aarhus, including several with PhDs, where you will solve high-stakes problems in reliability and efficiency. The challenge is real: our systems are massive, the pace is relentless, and the data is often messy. You'll need more than just technical depth; you'll need the grit to navigate ambiguity, the ownership to see a project through to implementation, and the adaptability to pivot when real-world constraints clash with your initial hypothesis. If you are motivated by seeing your algorithms and models directly impact millions of users, this is where you belong. Example projects ( you'll focus on one primary project) : - Optimize bin packing in our dynamic environment to increase host utilization rates, reducing global infrastructure costs. - Build a code risk scoring model that predicts the likelihood of a code change causing a production incident, helping us block high-risk changes before they land. - Navigate the messiness of incident data to build classifiers that distinguish between true and false positive rollbacks, creating a robust dataset for automated mitigation of production failures. - Advance the state of Cadence workflow versioning by designing "correct-by-design" systems that prevent the manual, error-prone versioning issues that currently lead to production outages. - Apply Generative AI or static/dynamic analysis techniques to identify patterns in incident postmortems, preventing future regressions before they happen. - Collaborate cross-functionally with teams in Reliability and Efficiency to translate complex business problems into elegant, scalable technical solutions. - Own your research end-to-end-from initial idea and experimentation to building a prototype that works within Uber's production ecosystem. Basic qualifications: - Currently enrolled in a PhD program in Computer Science, Software Engineering, or a related technical field, or expecting to graduate in 2026 or early 2027. - Experience coding with Go, C++, Java, Python or similar programming language - Ability to commit to a 3 months full time work in our Aarhus office starting in June 2026. Preferred qualifications: - Enjoy building high-quality software that is relied upon by millions of people around the world. - Comfortable working with ambiguity in a constantly evolving environment What You'll Gain: - A competitive monthly internship allowance (47,250 DKK/month gross) along with housing support - Monthly Uber Credits for Rides and Eats purchases plus a discount - The rare opportunity to change the world such that everyone around you is using the product you built - we're moving real people and assets and reinventing transportation and logistics globally - Strong mentorship and the opportunity to learn from Senior Software Engineers that will guide you through your internship experience - The opportunity to build personal network with smart and hardworking interns and Uber Employees who share your passion for technology in an international work environment - A variety of learning opportunities - The possibility of joining the team permanently in the future and building an exciting career at Uber At Uber, we ignite opportunity by setting the world in motion. We take on big problems to help drivers, riders, delivery partners, and eaters get moving in more than 10,000 cities around the world. We welcome people from all backgrounds who seek the opportunity to help build a future where everyone and everything can move independently. If you have the curiosity, passion, and collaborative spirit, work with us, and let's move the world forward together. Uber is proud to be an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law. We also consider qualified applicants