New

Research Scientist

California Institute of Technology
vision insurance, parental leave, paid time off, sick time, tuition reimbursement
United States, Washington, Richland
Apr 09, 2026
Caltech is a world-renowned science and engineering institute that marshals some of the world's brightest minds and most innovative tools to address fundamental scientific questions. We thrive on finding and cultivating talented people who are passionate about what they do. Join us and be a part of the diverse Caltech community. Job Summary LIGO Hanford Observatory (LHO) relies on continuous efforts by science and operations teams to characterize and improve i) the 4-km interferometer displacement sensitivity, and ii) improve uptime of the interferometer. Both of these enterprises increase the rate of detection of gravitational wave events recorded by the network of detectors that includes LIGO, Virgo, and KAGRA interferometers. The successful candidate will collaborate with commissioning scientists and the Operations team at LIGO Hanford Observatory, as well as colleagues at LIGO Livingston Observatory, Caltech, and MIT. As LHO Scientist, you will have the opportunity to apply your skills to the design, development, implementation, and commissioning of technologies that increase the Advanced LIGO detector sensitivity and robustness. This is a highly multidisciplinary activity. Your interests and passions will play a role in defining on which research aspect you will focus primarily: design and implement technologies and algorithms (including feedback control design and implementation) to reduce the noise sources that limit the current detector sensitivity; model optical subsystems of the interferometer and compare to data; calibrate the interferometer length sensitivity; investigate and eliminate noise couplings from the external environment of the detector; carry out R&D projects for future gravitational wave detectors, are among the many topics that are involved in the duties of a LIGO Hanford Observatory Scientist. You will have the opportunity to apply your knowledge to many different parts and aspects of the Advanced LIGO detectors, and there will be many opportunities to develop new skills and expertise. Essential Job Duties Improve the detector's sensing and control systems that govern optical cavity lengths and angles, including both servo-control stability and noise performance. Identify and minimize coupling of environmental disturbances into detector systems. Develop techniques and algorithms to characterize and remove noise sources. Study noise couplings, high-power operations, and thermal compensation via interferometer modeling. Aid in the calibration of the length sensitivity of the interferometer. Initiate or collaborate in writing research papers and technical presentations. Present research results and highlights at national and international conferences. After-hours and weekend work is occasionally required to support commissioning efforts. This position requires occasional travel to other LIGO installations and collaborating institutions in Livingston, Louisiana, Pasadena, California, Cambridge, Massachusetts, and possibly internationally. Other duties as assigned. Basic Qualifications A Ph.D. degree in Physics, Engineering, Optics or related field. In lieu of a Ph.D we will consider 6 years of relevant experience. A minimum of 4 years of post-PhD experience in working with interferometers/optical systems, and/or scientific data analysis, and/or feedback control systems, and/or signal processing. Experience working in a multi-disciplinary research environment. Possess good verbal and written communication skills, a team attitude, and a high degree of professional discipline. Experience in length calibration of kilometer-scale gravitational wave detectors. Preferred Qualifications Proficiency with scientific computation, simulation and data analysis in python or similar language. Experience with simulation software of optical and mechanical systems Experience with the design or operation of interferometric gravitational-wave detectors. Familiarity with good practice in mentoring students and/or staff. Experience with precision electronic circuit design and/or characterization; with precision electro-mechanical system design and/or characterization; and with precision optical system design and/or characterization. Required Documents Resume. Cover letter summarizing your relevant experience and your interest in working at LIGO Hanford. Hiring Range $79,700 - $112,500 Per Year The salary of the finalist(s) selected for this role will be set based on a variety of factors, including but not limited to, internal equity, experience, education, specialty and training. As one of the largest employers in Pasadena, CA, Caltech is committed to providing comprehensive benefits to eligible employees and their eligible dependents. Our benefits package includes competitive compensation, health, dental, and vision insurance, retirement savings plans, generous paid time off (vacation, holidays, sick time, parental leave, bereavement, etc.), tuition reimbursement, and more. Non-benefit eligible employees will have access to some benefits such as onsite counseling and sick time. Learn more about our benefits and staff perks. EEO Statement We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, or national origin, disability status, protected veteran status, or any other characteristic protected by law. Caltech is a VEVRAA Federal Contractor. To read more Equal Employment Opportunity (EEO) go to eeoc_self_print_poster.pdf. Disability Accommodations Caltech complies with the Fair Employment and Housing Act (FEHA) and the Americans with Disabilities Act (ADA). We consider reasonable accommodation measures that may be necessary for eligible applicants and employees to perform the essential functions of a position. If you would like to request an accommodation to complete this application, interview, or otherwise participate in the employee selection process, please contact Caltech Recruiting at employment@caltech.edu. Additionally, if you do not meet the basic qualifications of a role but believe you can perform the essential functions of the job with reasonable accommodation, please reach out to Caltech Recruiting at employment@caltech.edu.