Custodial Support Assistant; Part-Time
Listed on 2026-01-19
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Maintenance/Cleaning
Cleaning Services, Facility Maintenance, Janitor
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 SummaryLIGO Laboratory (the Laser Interferometer Gravitational-wave Observatory) seeks a highly motivated and skilled part-time Custodial Support Assistant to join its team.
This position is located in Richland, WA.
LIGO Laboratory is a National Science Foundation major facility dedicated to observing the newly discovered gravitational-wave universe. 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 o.caltech.edu.
EssentialJob Duties
The successful candidate will be a member of the Facilities Group. This position will be a part of the maintenance staff and report to the Facilities Team Lead. The maintenance staff is responsible for all of the day-to-day maintenance and repair of the entire Observatory and support buildings.
The Custodial Support Assistant is responsible for maintaining a clean, sanitary, and welcoming environment in designated LIGO Hanford Observatory buildings, including LExC and LSB. Duties include, but are not limited to:
Daily/Routine Cleaning Responsibilities:
- Vacuum vestibules, entryways, entry mats, and all carpeted areas
- Mop all hard-surface floors
- Empty and dispose of trash and recycling
- Dust furniture and fixtures
- Damp-clean tables and surfaces
- Clean interior and exterior of main entry doors
- Spot clean interior glass, light switches, door handles, and visible carpet stains
Exhibit Hall & Auditorium (LExC):
- Wipe and clean all exhibits using LIGO-approved cleaners and techniques (training and materials provided)
Restroom & Shower Facilities:
- Clean and sanitize toilets, urinals, sinks, faucets, flush valves, counters, and mirrors
- Spot clean restroom partitions
- Refill all restroom dispensers as needed, including hand soap, paper towels, toilet tissue, and feminine hygiene products
Kitchen & Break Areas:
- Sanitize sinks and countertops
- Empty trash
- Clean microwaves
- Refill soap and towel dispensers as needed
- Wipe down door handles and light switches
Monthly Cleaning Tasks:
- Wipe down chairs, baseboards, and moldings
- Perform high dusting of refrigerators, vending machines, air vents, and other elevated surfaces
- Remove spider webs from high corners
As-Needed & Special Services:
- Spot clean carpets using LIGO-provided equipment and cleaning supplies
- Clean outdoor furniture when weather permits
- Provide cleaning assistance in additional lab areas as requested
- Perform other related duties as assigned
- The candidate must have a minimum of High School Diploma or GED
- Must have at least 1 year of related work experience cleaning facilities
- Proficiency with communication skills, written and verbal, and be able to communicate with people who have a broad range of backgrounds and skills
- Must have a valid driver's license at the time of employment and be able to maintain it throughout the course of employment
- Must have the ability to lift 20 pounds of office supplies and equipment
- Working knowledge with standard office computing applications (e.g. Outlook and web applications)
- General knowledge in planning and scheduling work tasks
- Resume
$19.00 - $24.00 Per Hour
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.
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