Part-Time Lab Operations Technician (Weighing, Stock Solutions & Receiving) — Automated Lab (Night Shift Available)

onepot • South San Francisco, CA

36d • Onsite

About The Position

onepot is building an automated small-molecule lab where robotics and software drive synthesis and analysis. This role is hands-on lab operations work that directly supports an automated workflow: accurate inputs, clean inventory, and reliable receiving are what keep the automation running. This part-time, on-site role in South San Francisco involves hands-on lab operations work that directly supports an automated workflow. Night shift availability is welcome.

Requirements

• Strong attention to detail; comfortable following SOPs and producing clean records
• Comfort with basic lab math (molarity, dilutions) and working carefully with chemicals
• Reliable and consistent availability for scheduled shifts (night shift ok)
• Basic computer comfort (simple inventory tools)
• Prior lab assistant / lab ops / stockroom / receiving experience
• Familiarity with SDS, chemical compatibility storage, and labeling norms

Nice To Haves

• Ability to lift/move boxes up to 50 lb
• Ability to stand at a bench for extended periods

Responsibilities

• Compound handling & precision weighing (primary): Accurately weigh solid compounds/reagents (mg to g scale) on analytical balances. Prepare labeled aliquots and staging sets that feed automated/robotic workflows. Maintain clean, contamination-aware weighing practices (gloves, anti-static control, clean tools). Record weights, lot numbers, IDs, and operator/date in a traceable format.
• Stock solution preparation: Prepare stock solutions from SOPs (target molarity/concentration, dilution math, mixing). Label and document concentrations, solvent, date, operator, and storage conditions. Flag solubility issues, discrepancies, or labeling/inventory mismatches.
• Receiving, staging & inventory (automation-ready): Receive shipments, verify contents vs packing slips/POs, and triage issues (damage, missing items). Log inventory and assign locations so materials are retrievable fast and consistently. Put away chemicals and supplies in correct storage (ambient/fridge/freezer/flammables/corrosives). Stage supplies/consumables (vials, tubes, tips, labels, solvents, PPE).
• General lab ops support: Keep weighing/receiving areas organized, audit-ready, and safe. Assist with periodic cycle counts and basic inventory cleanup. Follow chemical hygiene and safety procedures consistently.

Benefits

• Pay range and compensation package $28–$32/hour, depending on experience with precision weighing, stock solutions, and inventory discipline (night shift reliability pushes toward the top end).

What This Job Offers

• Job Type: Part-time
• Career Level: Entry Level
• Education Level: No Education Listed