San Francisco, California, United States · On-site
$40/hr–$50/hr
About Mariana Minerals Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the…
Skills: Chemical Process Operation, Chemical Handling, Equipment Installation, Equipment Troubleshooting, CMMS
San Francisco, California, United States · On-site
$25/hr–$33/hr
Compensation TypeHourly Highgate Hotels Highgate is a premier real estate investment and hospitality management company widely recognized as an innovator in the industry. Highgate is the dominant player in U.S. gateway m…
Skills: Sanitation Standards, Dishwashing Equipment Operation, Chemical Handling, Kitchen Maintenance, Food Storage Rotation
San Francisco, California, United States · On-site
$23/hr–$25/hr
We are hiring immediately for a full time COOK position. Location: Archbishop Riordan - 175 Frida Kahlo Way, San Francisco, CA 94112. Note: online applications accepted only. Schedule: Full time schedule. Monday through …
Skills: Hot Food Preparation, Cashiering, Portion Control, HACCP Standards, Food Safety
San Francisco, California, United States · On-site
$25/hr–$33/hr
Compensation TypeHourly Highgate Hotels Highgate is a leading real estate investment and hospitality management company with over $15 billion of assets under management and a global portfolio of more than 400 hotels span…
Skills: Floor Buffing, Carpet Shampooing, Luggage Assistance, Guest Relations, Cleaning
San Francisco, California, United States · On-site
About Four Seasons: Four Seasons is powered by our people. We are a collective of individuals who crave to become better, to push ourselves to new heights and to treat each other as we wish to be treated in return. Our t…
Skills: Dishwashing, Sanitization, Kitchen Equipment Cleaning, Silver Burnishing, Chemical Handling
San Francisco, California, United States · On-site
We are looking for Seasonal Part Time Car Wash Attendants who take pride in their work and drive customer satisfaction. As a Seasonal Part Time Car Wash Attendant, you will be helping prepare vehicles to be ready for cus…
Skills: Vehicle Cleaning, Vehicle Maintenance Checks, Driving, Customer Satisfaction, Fluid Level Checks
Isuzu Veterans Apprenticeship Program (IVAP)San Francisco, California, United States · On-site
TEC Isuzu Trucks of San Francisco, California is seeking Military Veterans with mechanical experience who are interested in beginning a rewarding career as an Isuzu Service Technician. This opportunity is part of the Isu…
Skills: Diesel Mechanics, Wheeled Vehicle Maintenance, Heavy Equipment Maintenance, Automotive Repair, Aircraft Maintenance
San Francisco, California, United States · On-site
$96k–$117k/yr
Company Description This is a Position-Based Test conducted in accordance with CSC Rule 111A. Specific information regarding this recruitment process is listed below. Application Opening: Tuesday, July 7, 2026Application…
Skills: Custodial Supervision, Facilities Management, Inventory Control, Safety Program Development, Strategic Planning
San Francisco, California, United States · On-site
$100k–$140k/yr
About us Ulysses designs, manufactures, and operates autonomous surface and subsea vehicles for defense, commercial, and scientific missions. Our platform spans Mako (a modular AUV with 60-hour endurance), Leviathan (an …
Skills: PCBA Rework, Soldering, Robot Assembly, Cable Harnessing, Circuit Troubleshooting
San Francisco, California, United States · On-site
$54k–$57k/yr
At Bozzuto, every team member shares a deep commitment to doing good for those around us. We live this each day by designing, building, managing and maintaining one-of-a-kind residences. Whether it’s the talent within ou…
Skills: HVAC Repair, Plumbing, Electrical Repair, Appliance Repair, Preventative Maintenance
San Francisco, California, United States · On-site
$88k–$100k/yr
At Bozzuto, every team member shares a deep commitment to doing good for those around us. We live this each day by designing, building, managing and maintaining one-of-a-kind residences. Whether it’s the talent within ou…
Skills: HVAC Repair, Electrical Repair, Plumbing Repair, Appliance Repair, Team Leadership
San Francisco, California, United States · On-site
$70k–$150k/yr
Who we are Atoms is building the machines that power the next era of progress. Over the last decade, software has transformed the digital world. But the physical world, where food is made, minerals are mined, goods are m…
Skills: Hardware Assembly, Fabrication, Cable Harness Assembly, 3D Printing, PCB Assembly
San Francisco, California, United States · On-site
$70k–$150k/yr
Who we are Atoms is building the machines that power the next era of progress. Over the last decade, software has transformed the digital world. But the physical world, where food is made, minerals are mined, goods are m…
Skills: Hardware Assembly, Fabrication, Cable Harness Assembly, 3D Printing, PCB Assembly
San Francisco, California, United States · On-site
As a Superintendent, you will leverage your capacity for innovation and problem-solving to lead field operations to ensure an exceptional project is delivered to our clients. You will oversee self-performed and contracte…
Skills: Field Operations Leadership, Project Scheduling, Safety Compliance, Quality Control, Jobsite Logistics
San Francisco, California, United States · On-site
What We're Building: We have been quietly building the foundational layers of our Physical AI Scientist platform: 🤖 Physical AI that can operate scientific instruments with human-level dexterity. 🧪 Scientific AI that c…
Skills: Mechanical Intuition, Hardware Debugging, Hardware Assembly, Rapid Prototyping, Technical Drawing Interpretation
San Francisco, California, United States · On-site
$55k–$65k/yr
Join a team that’s redefining property management. At 2B Living, we do things differently—we Solve Hard Problems, Grow Courageously, and Row Together to create thriving communities. As an Assistant Property Manager (APM)…
Skills: Problem solving, Organizational skills, Communication, Time management, Microsoft Office
San Francisco, California, United States · On-site
Print Shop Manager (Large-Format Production & Operations Supervisor) Position Summary We are seeking a proactive and experienced Print Shop Manager to join our on-site production team. The ideal candidate will have stron…
Skills: Large-Format Printing, Grand-Format Production, Production Management, Workflow Optimization, Staff Training
San Francisco, California, United States · On-site
We are hiring immediately for a full time SENIOR COOK position. Location: 1455 Third Street, San Francisco, CA 94158. Note: online applications accepted only. Schedule: Full time; Monday through Friday, 12:00 PM to 8:30 …
Skills: High-volume Cooking, Recipe Adherence, Equipment Operation, Food Storage, HACCP Guidelines
San Francisco, California, United States · On-site
Planned Companies –Porter – Job Description Hours: Friday-Tuesday, 7:30am-2:30pm Pay Rate: $21/hr Location: San Francisco Summary Residential and commercial property owners, now more than ever, realize how big a role Jan…
Skills: Vacuuming, Mopping, Floor Stripping, Buffing, Waxing
San Francisco, California, United States · On-site
Planned Companies –Porter – Job Description Hours: Wednesday-Sunday, 7:30am-2:30pm Pay Rate: $21/hr Location: San Francisco Summary Residential and commercial property owners, now more than ever, realize how big a role J…
Skills: Vacuuming, Mopping, Floor Buffing, Floor Waxing, Sanitization
Sign up with Clera and we'll reach out the moment a role actually fits you — no more spraying applications into the void.
Support the design, deployment, and operation of refining processes for critical minerals while assisting in the development of automated plant optimization software. Responsibilities include monitoring chemical processes, maintaining equipment, and documenting operational records.
Requires an associate degree or technical certificate with 3+ years of experience operating industrial equipment in minerals, chemicals, or similar industries. Candidates must be proficient in plant safety protocols like LOTO and capable of lifting up to 50 lbs.
Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.
Mariana Minerals is looking for a highly motivated technician to join our San Francisco Pilot Plant team. You will support the design, deployment, and operation of first-of-its-kind refining processes for critical minerals, while also supporting development of software for automated plant optimization. This position is highly hands-on and will play a critical role in bridging R&D and Operations, ensuring processes are robust, safe, cost-effective, and suitable for commercial production.
Assist engineers and other technicians to operate and monitor copper extraction chemical processes
Safely handle chemicals, raw materials, and waste streams in compliance with SOPs and regulations
Support sampling, quality checks, and basic laboratory measurements
Assist with design, install, startup, and commissioning of new equipment and processes
Take ownership of plant cleanliness and organization, ensuring work areas, tools, and equipment are well-maintained and ready for operations
Perform routine maintenance, inspections, and basic mechanical repairs; document findings & actions in a Computerized Maintenance Management System (CMMS)
Create and maintain procedures, experimental records, shift reports, and other critical operations documents
Associate degree, technical certificate, or equivalent experience in chemical technology, process technology, industrial operations, or a related field
3+ years of experience operating pilot plant or commercial scale industrial equipment in the minerals processing, chemicals, specialty materials, oil & gas, biotech, or similar industry
Prior exposure to core plant safety work processes such as Lockout/Tagout (LOTO), hot work permitting, confined space entry, and safe work permitting systems
Experience using human–machine interfaces (HMIs) and plant software systems to monitor, control, and adjust process operation
Experience with hands-on equipment installation, modification, and troubleshooting
Basic knowledge of inorganic chemistry, pH, and reaction stoichiometry a plus
Experience using engineering documents such as PFDs, control narratives, or P&IDs is a plus
Climb stairs, stand for extended periods of time, and safely lift up to 50 lbs
Extreme Ownership – We take full responsibility for outcomes, relentlessly driving toward solutions.
Engineer Out Requirements, then Automate – We simplify, optimize, and then automate for scale.
Share Your Legos – We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.
Join us as we build the future of responsible mineral sourcing and supply.
Building a better minerals company
Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.
Offices: San Francisco, CA 94107, US · La Sal, UT 84530, US · 1400 Minnesota St, San Francisco, California 94107, US
There are currently 543 open trades positions in San Francisco, CA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include Amerit Fleet Solutions, Compass Group, San Francisco Department of Public Health, ABM Industries, The John Stewart Company, among others. Browse the listings above to see every active employer.
Yes — 11 of the 543 open trades positions offer remote or hybrid work (3 remote, 8 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
