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CalTech - California Institute of Technology

Research Engineer

Closes:

Salary: $89,600 – $108,000 per year

68

Job Summary

The Laser Interferometer Gravitational-wave Observatory (LIGO) Laboratory seeks a highly motivated and skilled Research Engineer to join its team. LIGO Laboratory is a National Science Foundation major facility dedicated to observing gravitational-waves. Jointly operated by the California Institute of Technology and Massachusetts Institute of Technology, the LIGO Laboratory operates world-leading observatories near Richland, WA and Baton Rouge, LA as well as R&D centers on the Caltech and MIT campuses. The LIGO Laboratory’s mission spans a broad and vibrant array of activities related to gravitational-wave physics and astronomy, including detector operations, R&D toward detector improvements, gravitational-wave astrophysics, observatory operations, and education and public outreach. For more information, please visit the Laboratory website at www.ligo.caltech.edu.

This position is an in-person role located in Pasadena, California.

As a Research Engineer in the LIGO Laboratory, you will have the opportunity to apply your skills to the design and implementation of technologies that increase the LIGO detector sensitivity and astrophysical reach, and to the development of the future interferometric detectors of the next decades. This position focuses on the development and characterization of the extremely high performance systems used for the LIGO interferometer, including but not limited to: the test mass mirrors, a critical component with state of the art performance: greater than 99.999% reflection, extremely low scatter, sub-part-per-million absorption and very low thermal noise; laser systems with unparalleled stability; seismic and vibration isolation systems; optical telescopes and sensors.

This is a highly multidisciplinary activity and your interests and passions will play a role in defining which research aspect you will focus primarily on.

You will have the opportunity to apply your knowledge to many different parts and aspects of the current and future LIGO detectors, and there will be many opportunities to develop new skills and expertise.

Essential Job Duties

  • Support the cutting edge R&D program at the LIGO laboratory aimed at improving the sensitivity of the current and future detectors, in collaboration with scientists and engineers in the LIGO Laboratory and the LIGO Scientific Collaboration.
  • Support the development, characterization and deployment of LIGO core optics components, such as test masses and other optical components.
  • Design, construct and operate experiments and measurement systems to test new coatings and new technologies for current and future gravitational-wave instruments.
  • Collaborate in the R&D for core components of the LIGO interferometers including: seismic isolation, suspensions, core optics, lasers, mode matching systems, adaptive optics systems.
  • Collaborate with vendors and other research groups on the development of technologies and components relevant for the LIGO detector upgrades.
  • Develop strong working relationships and collaborations with scientists and engineers at the two LIGO Observatories.
  • This position requires occasional travel to other LIGO installations and collaborating institutions in Livingston, Louisiana, Hanford, Washington, Cambridge, Massachusetts, and possibly internationally.
  • Applicants must be able to work in a cleanroom and laser environment for extended periods of time.
  • Must be able to lift and/or carry 20 or more pounds of lab and/or prototype equipment.
  • Other duties as assigned.

Basic Qualifications

  • A Bachelor in Physics, Engineering, Optics, or related experimental field.
  • A minimum of 3 years post bachelor degree experience as an experimental physicist, engineer or equivalent laboratory setting; this can be in a professional work environment or as part of further education.
  • A minimum of 2 years experience with scientific computations and modeling using MATLAB, python or similar tools; this can be a significant contribution to a research project or work for a private employer.
  • Experience with the design and construction of engineered systems or research experiments.
  • Must possess excellent verbal and written communication skills, as presentation of your work and findings to senior member of the LIGO laboratory is critical.
  • Demonstrable experience of successfully working with a team.

Preferred Qualifications

  • Master or Ph.D. in Physics or equivalent experience.
  • Experience with mechanical CAD (Solidworks or equivalent) and Optical Design CAD (Zemax or equivalent).
  • Experience with gravitational-wave detector technology.

Required Documents

  • A cover letter is a required document for this position. Please write a letter that summarizes your relevant experience and your interest in working at LIGO.
  • Resume.

Hiring Range

$89,600 - $108,000 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.

Job details

Title
Research Engineer
Employer
CalTech - California Institute of Technology
Location
Pasadena, California
Published
Oct 26, 2026
Closes:
Dec 25, 2026
Job type
Full time, Staff / Administration
Field
Laboratory and Research
Salary

Salary: $89,600 – $108,000 per year

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Frequently Asked Questions

📋What is the Research Engineer?

This listing is for Research Engineer at CalTech - California Institute of Technology.

📍Where is this role located?

The listed location is Pasadena, California.

💰What is the salary?

The listed salary is $89,600 – $108,000 yearly.

📅When do applications close?

Applications close on Dec 25, 2026.

💼What type of appointment is this?

The listed type is Full time.

📝How do I apply?

Use the Apply Now button on this listing to submit your application.

About the employer

CalTech - California Institute of Technology Jobs

CalTech - California Institute of Technology

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AcademicJobs.com is the premier platform to discover Caltech jobs, connecting talented professionals with exceptional career opportunities at one of the world’s leading institutions for science and technology. The California Institute of Technology (Caltech), located in Pasadena, California, is renowned for its groundbreaking research and academic excellence, making Caltech uni jobs highly sought after by academics and professionals globally. Caltech careers offer an innovative and collaborative environment for individuals to excel. Caltech university careers span a diverse range of disciplines, reflecting the institute’s key areas of academic specialization, including physics, astronomy, engineering, computer science, and biology. Employment Caltech includes roles such as professors, research scientists, postdoctoral scholars, and professional staff positions, catering to various expertise levels. For those pursuing Caltech jobs Pasadena, the institute’s vibrant campus provides a dynamic workplace in a sunny, culturally rich region near Los Angeles. Caltech uni vacancies and job postings are showcased on AcademicJobs.com, where candidates can explore opportunities in cutting-edge research, teaching, and administrative roles. Jobs at Caltech cover fields like quantum computing, planetary science, and bioengineering, aligning with the institute’s mission to advance scientific discovery and solve global challenges. Each Caltech vacancy is an opportunity to contribute to pioneering projects within a world-class scientific community. Caltech Employment Opportunities are extensive, with Caltech job Opportunities ranging from academic faculty to technical and operational roles. A Caltech Career offers the chance to join an institution that values innovation, rigor, and interdisciplinary collaboration. Caltech uni openings are regularly updated on AcademicJobs.com, ensuring access to the latest Caltech vacancies. Jobs at Caltech uni are ideal for those passionate about pushing the boundaries of science and technology. Caltech job postings include positions in chemistry, data science, and professional services such as IT and research administration. Caltech Employment through AcademicJobs.com connects talented individuals with Caltech Uni vacancies, providing a seamless pathway to join a prestigious institution driving global scientific progress.

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