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

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.

• 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

• 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

• 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)

• 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

• 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

• Ability to lift/move boxes up to 50 lb

• Ability to stand at a bench for extended periods

We are committed to diversity and inclusivity in our hiring practices.