Biochemical Formulation and HTS Plating Co-op

At Millipore Sigma, they are at the forefront of life sciences, working tirelessly to tackle the industry's toughest challenges. By collaborating with the global scientific community, they strive to enhance health access worldwide. Their mission is clear: to equip scientists and engineers with top‑notch lab materials, technologies, and services, making research and biotech production simpler, faster, and more successful. With a dedication to shaping the future of drug development, they’re with our customers every step of the way, pioneering tomorrow's possibilities.

Millipore Sigma’s Biochemistry R&D team in Milwaukee, WI is seeking a graduate co‑op for a full‑time, on‑site, six‑month assignment (January to June 2027). The co‑op will help develop high‑throughput screening (HTS) plate products that support drug discovery and development: dry‑ and liquid‑plated biochemical reagents, buffers, biorelevant media, and screening matrices in 24‑, 48‑, 96‑, and 384‑well formats. The co‑op will plan and run experiments, analyze data, and present a final project to the team.

Salary: $25 - $32 per hour.

Shift: First.

Work hours:

8 AM - 5 PM.

Education:

High School.

• Currently enrolled in a Master’s or PhD program studying Biomedical Engineering;
  Biochemical or Chemical Engineering;
  Pharmaceutical Sciences or Pharmaceutics;
  Biochemistry;
  Chemistry
• Hands‑on experience with 24‑ to 384‑well plates (manual or automated liquid handling, plate sealing, or plate‑reader assays).
• Working knowledge of solution preparation, solubility, and solvent compatibility, including aqueous and DMSO systems.
• Experience planning experiments, keeping accurate lab records, and analyzing data (Excel; JMP or similar a plus).
• Clear written and verbal communication; works independently and in a team.
• Available full‑time (40 hours/week), on‑site in Milwaukee, WI, January to June 2027.
• Preferred: automated liquid handlers or solid dispensers, low‑volume dispensing, HPLC/UPLC, LC‑MS, UV‑Vis, or Design of Experiments (DoE).

• Prepare biochemical reagent solutions and formulations (buffers, salts, sugars, cofactors, excipients, and DMSO stocks) for plating.
• Operate or support solid and liquid dispensers, analytical balances, and plate‑handling equipment.
• Help build dispensing workflows: plate layouts, dispensing parameters, dose ranges, and in‑process controls.
• Measure fill accuracy, precision, well‑to‑well and plate‑to‑plate uniformity (gravimetric, UV‑Vis/plate‑reader, or HPLC).
• Support plate qualification (sealing, barcodes, storage, freeze‑thaw, reconstitution, end‑use performance); evaluate carryover, evaporation, edge effects, and solvent compatibility.
• Help troubleshoot precipitation, evaporation, carryover, and inconsistent well dosing.
• Document plate maps, dispensing instructions, protocols, and reports; share results with R&D, Analytical, Manufacturing, Quality, and Automation; follow EHS safety practices.

• HPLC (6 months of experience is preferred)
• UPLC (6 months of experience is preferred)
• LC‑MS (6 months of experience is preferred)
• UV‑Vis (6 months of experience is preferred)
• Design of Experiments (DoE)

• Years of experience: 0 years
• Experience level:
  Entry Level

• Entry Level

• High School (required)

• medical
• prescription
• dental
• vision
• AD&D
• life insurance
• short-term disability
• 401K plan

Equal Opportunity

Employer:

Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants.

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