Are you an ambitious undergraduate student dreaming of conducting groundbreaking research alongside world-renowned scientists and Nobel laureates? The CALTECH Summer Undergraduate Research Fellowship (SURF) 2027 at the California Institute of Technology (Caltech) stands out as one of the most prestigious, hands-on STEM summer internships globally. The Summer Undergraduate Research Fellowships (SURF) program is one of the “crown jewels” of Caltech. Since 1979, SURF students have had the opportunity to conduct research under the guidance of experienced mentors working at the frontier of their fields.
Modelled on the donor- and endowment-backed research fellowships of top U.S. institutions, Caltech’s flagship summer program grants students the unique opportunity to design and execute a dedicated 10-week research project. This comprehensive guide breaks down everything you need to know about the CALTECH University Summer Research Program 2027, including key deadlines, eligibility criteria, application steps, stipends, living costs, and expert strategies to win a fellowship.
Basic Information About the Program
The Summer Undergraduate Research Fellowship (SURF) is Caltech’s crown-jewel summer initiative managed by the Student-Faculty Programs (SFP) office. It provides undergraduates with a immersive, graduate-level research environment under the direct mentorship of Caltech faculty members.
- Host Institution: California Institute of Technology (Caltech), Pasadena, California, USA.
- Program Name: Caltech Summer Undergraduate Research Fellowship (SURF).
- Duration: 10 weeks during summer.
- Students conduct research under the guidance of experienced faculty mentors.
- Students develop a research proposal with their mentor before applying.
- At the end of the programme, students submit a technical research paper and give an oral presentation.
- Target Audience: Domestic (U.S. citizens and permanent residents) and visiting international undergraduate students.
- Application Opening Date: November 1, 2026.
- Application Deadline: February 22, 2027 (typically late February each cycle).
- Award Announcements: April 1, 2027.
Institution Details: The Caltech Difference
Located in Pasadena, California, against the backdrop of the San Gabriel Mountains, the California Institute of Technology (Caltech) is a world leader in science and engineering research. Despite its small size, Caltech boasts dozens of Nobel Laureates, Turing Award winners, and National Medals of Science recipients among its alumni and faculty.
The university maintains an extraordinarily low student-to-faculty ratio, creating an intimate setting where undergraduate researchers collaborate directly with principal investigators (PIs) and postdoctoral scholars. Additionally, Caltech manages NASA’s Jet Propulsion Laboratory (JPL), giving eligible domestic scholars access to space exploration technology.
Study Areas & Research Fields
The Caltech SURF program spans virtually all areas across Science, Technology, Engineering, and Mathematics (STEM). Unlike traditional internships with rigid project assignments, SURF allows you to write a custom research proposal in collaboration with your chosen Caltech mentor.
Popular Fields of Study:
- Physics, Mathematics & Astronomy: Quantum computing, astrophysics, observational cosmology, high-energy physics, condensed matter theory.
- Engineering & Applied Science: Robotics, computer science, artificial intelligence/machine learning, aerospace engineering, bio-engineering, electrical engineering.
- Biology & Biological Engineering: Genetics, structural biology, neuroscience, synthetic biology, molecular biophysics.
- Chemistry & Chemical Engineering: Sustainable catalysis, materials chemistry, biochemistry, chemical synthesis.
- Geological & Planetary Sciences: Environmental science, geophysics, planetary geology, atmospheric sciences.
Note for International Applicants: Visiting international students can apply for projects based on the main Caltech campus in Pasadena. Placement tracks located at NASA’s Jet Propulsion Laboratory (JPL) are strictly reserved for U.S. citizens and U.S. permanent residents.
CALTECH Summer Undergraduate Research Fellowship (SURF) Benefits
- Financial award: $8,354 for the full 10-week programme in 2027.
- To cover
- Airfare Travel Expenses
- Accommodation
- Meals
- Visa Cost (if any)
- Other Personal Expenses
- To cover
- Research experience with experienced faculty and researchers.
- Opportunities to attend seminars led by Caltech faculty and NASA Jet Propulsion Laboratory (JPL) scientists and engineers.
- Academic and professional development workshops.
- Guidance on research careers and graduate school applications.
- Communication workshops and social activities.
- Opportunities to interact with faculty and other researchers.
- Note: The stated award is for the 10-week period. Confirm the detailed funding arrangements and any additional expenses before accepting an offer.
Benefits Not Included
- Travel to and from Caltech may need to be arranged and funded by fellows or covered under specific grants.
- Health insurance costs may not be covered automatically and might require separate arrangements.
- Personal expenses such as food outside provided meals, entertainment, and miscellaneous costs are not included in the stipend.
- Academic credit is not guaranteed unless arranged through the student’s home institution.
Eligibility Criteria for the CALTECH Summer Undergraduate Research Fellowship (SURF)
Visiting Students
Students from universities other than Caltech must:
- Be currently enrolled in an undergraduate degree programme.
- Be eligible to register for the following fall semester.
- Have a minimum cumulative GPA of 2.5 out of 4.0.
- Have completed at least the second semester or third quarter of undergraduate study.
- Not be under academic or disciplinary sanctions.
High school students taking college courses alongside high school are not eligible.
International Students
- International students can participate in research projects on the Caltech campus.
- Only US citizens and permanent residents are eligible for SURF placements at JPL.
- International students coming to the USA for SURF will receive instructions about applying for an F-1 or J-1 visa after receiving an award.
- International students already studying in the USA must obtain the required off-campus employment authorization before starting SURF.
Important Requirements During the Programme
Selected students must:
- Participate in person; remote research is not permitted.
- Work on the research project full-time for all 10 weeks.
- Not take courses or hold another job during the programme.
- Submit two interim progress reports.
- Submit a research abstract.
- Submit a final technical paper approved by the mentor.
- Give a final oral presentation.
- Follow Caltech’s Honor Code and campus policies.
Selection Criteria
Applications are evaluated based on:
- Quality and clarity of the research proposal.
- Understanding of the research topic.
- Feasibility of completing the project in 10 weeks.
- Potential for original research and publication.
- Relevant academic coursework and previous research experience.
- Strength of recommendation letters and the mentor’s evaluation.
- Available funding.
Awards are based on the strength of the application and available funding.
Required Documents for the Application
- Completed online application form with personal and academic information.
- Research proposal written by the applicant outlining the planned project.
- Project & Proposal
- Should have real intellectual and creative depth.
- Must show understanding of research background, goals, and methods.
- Should be achievable in 10 weeks and ideally publishable.
- Returning SURFers should show more depth.
- Unofficial academic transcripts from all post-secondary institutions attended.
- Two to three confidential letters of recommendation from academic or professional referees.
- 2 letters (one faculty, one other academic or mentor).
- Submit recommender info early (same deadline: Feb 22).
- Caltech mentor gives a separate evaluation (not a recommendation letter).
- Identification of a Caltech research mentor who agrees to supervise the applicant.
- Personal statement or essay (if required) explaining research interests and goals.
Requirements for Fellows
- Full-time research only (no courses or other jobs).
- On-campus, in-person research (remote not allowed).
- Submit:
- 2 interim reports
- Abstract
- Final technical paper
- Final oral presentation
- Follow Caltech’s Honor Code and campus policies.
CALTECH Summer Undergraduate Research Fellowship (SURF) Application Process (Step-by-Step Guide)
Step 1: Find a research mentor
- Identify a Caltech faculty member whose research matches your interests.
- Contact the faculty member before submitting your application.
- The mentor must agree to support your application, help develop your research project and proposal, and contribute financially to the award.
- You must obtain mentor approval before applying.
Step 2: Prepare the application documents
You need:
- Completed online application.
- Research proposal.
- Unofficial academic transcript for visiting students.
- Two confidential recommendation letters, including at least one from a faculty member.
Step 3: Submit the application
- Submit all documents through the SFP Online application system.
- Enter your recommenders’ contact information early so they have time to submit their letters.
- Your prospective Caltech mentor provides a separate evaluation and should not write one of your recommendation letters.
Research Proposal Requirements
Your proposal should explain:
- The research problem and its importance.
- The theoretical background.
- The research methods and techniques.
- How the project relates to existing research.
- The expected outcomes and usefulness of the research.
- A clear work plan for completing the project within 10 weeks.
The proposed project should have meaningful intellectual content and potential for publication in a peer-reviewed journal.
Tips for a Successful Application
- Start Faculty Outreach Early: Do not wait until January to contact professors. Caltech faculty receive hundreds of emails from global applicants. Reaching out between September and November yields the highest response rates.
- Avoid Generic Cold Emails: Personalize every email. Cite 1–2 of the professor’s recent research papers, explain why their specific methodology excites you, and clearly state how your background prepares you for their laboratory.
- Demonstrate Proposal Ownership: The committee evaluates whether you personally wrote the research proposal. Show a clear grasp of the scientific background, hypotheses, experimental design, and fallback plans if experiments fail.
- Leverage Your Recommenders: Ask professors who know your laboratory work, problem-solving abilities, and work ethic—not just faculty who gave you an “A” in a large lecture hall.
Estimated Monthly Living Expenses in Pasadena, California
Pasadena is located within the Greater Los Angeles area, where living expenses reflect typical Southern California costs. Here is a realistic budget breakdown in USD ($) for international summer fellows:
| Expense Category | Monthly Cost (USD) | Notes |
| Housing (Caltech Dorms / Sublets) | $800 – $1,200 | Summer guest housing on campus or shared local off-campus apartments |
| Food & Meals | $350 – $500 | Groceries, on-campus dining halls, and local Pasadena eateries |
| Transportation | $60 – $100 | Pasadena transit, Metro light rail, biking, or rideshare shares |
| Health Insurance & Medical | $100 – $180 | Mandatory health coverage compliance for international visitors |
| Personal & Entertainment | $150 – $250 | Weekend trips to LA, beach outings, laundry, and personal supplies |
| Total Monthly Cost | $1,460 – $2,230 / month | Fully payable from your $8,110+ stipend! |
Why Choose the Caltech SURF Program? (5 Core Reasons)
- Unrivaled Academic Prestige: Adding a Caltech research fellowship to your resume sets you apart when applying for top-tier Ph.D. programs and competitive STEM fellowships globally.
- Real Research Autonomy: Unlike passive internships where students shadow labs, SURF fellows manage their own dedicated project under top-tier mentorship.
- Graduate School Pathway: SURF serves as an informal pipeline for graduate admissions at Caltech and other elite institutions like MIT, Stanford, and Harvard.
- Comprehensive Financial Support: A stipend exceeding $8,100 USD ensures that financial limits do not stop talented international students from accessing world-class labs.
- Vibrant Peer & Alumni Network: Joining a summer cohort of bright undergraduates creates lifelong research collaborations and professional connections across the globe.
Frequently Asked Questions (FAQs)
Are international students eligible for the Caltech SURF program?
Yes! International students enrolled at universities worldwide are fully eligible for main-campus Caltech SURF placements. However, placements located at NASA’s Jet Propulsion Laboratory (JPL) are restricted to U.S. citizens and permanent residents.
Is there an application fee for Caltech SURF 2027?
No, submitting an application through the official Caltech Student-Faculty Programs portal is completely free of charge.
Can I participate in SURF remotely?
No. SURF requires full-time, in-person laboratory and computational work on campus in Pasadena. Remote or hybrid arrangements are not permitted.
Do I need to submit official English proficiency test scores (IELTS/TOEFL)?
Caltech SFP does not explicitly require standardized TOEFL or IELTS scores for the SURF application. However, your proposal writing and communication with your prospective Caltech mentor must demonstrate high-level scientific English fluency.
What happens if I haven’t secured a mentor before the deadline?
You cannot submit a SURF application without a confirmed Caltech faculty mentor who has reviewed your research proposal and agreed to sponsor your application. Outreach to potential mentors should begin as early as possible in the fall.
Application Deadline and Results
- Application deadline: February 22, 2027.
- Results announcement: April 1, 2027.
Applications and recommendation letters must be submitted by the deadline.
