PhD in Computer Science

The deadline to apply for the Sep 2027 intake is Dec 15, 2026. Tuition fees for PhD in Computer Science are 60,816 USD per year.

The PhD in Computer Science at California Institute of Technology is a 4-year program for students who want to pursue a career in theoretical computer science. This PhD degree helps students develop a strong foundation in mathematical and algorithmic foundations of computing. The program requires students to maintain high academic standards and exhibit originality in their research.

The curriculum focuses on cutting-edge research in various subfields of computer science, including computational thinking and its applications. Students learn skills such as problem analysis, solution formulation, and research presentation. The program also provides opportunities for students to work with experienced faculty members and engage in hands-on research projects.

Graduates of this program can pursue careers as Research Scientists, Software Engineers, Data Analysts, Computer Systems Architects, or Artificial Intelligence Engineers. They can work in industries such as technology, finance, healthcare, or education, and can be employed by companies like Google, Microsoft, or NASA.

California Institute of Technology (Caltech) in Pasadena is internationally renowned for its focus on science and engineering and for a research environment that emphasizes discovery and innovation. Founded in 1891, Caltech combines small class sizes with world-class faculty and a culture that encourages independent inquiry. The institute’s achievements in fundamental research and technology transfer make it a top choice for students seeking an intensive STEM education and close mentorship from leading scholars.

Caltech offers a compact, high-impact academic setting where undergraduates and graduate students participate directly in cutting-edge projects across physics, biology, engineering and computation. Research opportunities are abundant and accessible, with students contributing to labs, observatories and centers that address global challenges. The collaborative, interdisciplinary approach cultivates both deep technical expertise and the ability to work across fields.

As a relatively small campus community, Caltech provides strong academic support, mentorship and networking in the greater Los Angeles research ecosystem. For international students drawn to rigorous STEM training, Caltech delivers concentrated resources, hands-on research experiences and pathways to meaningful scientific contribution in industry, academia and public service.