Chemical Process Engineer

Job Description

Job Description

Chemical Process Engineer
Kelly® Science & Clinical is seeking a Chemical Process Engineer for a contract position at a cutting-edge client in the pharmaceutical/API manufacturing industry in St Louis, MO. If you're passionate about bringing the latest scientific discoveries to life and are ready to take the next step in your career, trust The Experts at Hiring Experts . Pay: $45-55/hour
Schedule: Mon-Fri On-site | Full-Time | Occasional travel to customer sites expected Overview
Our client is an industry-leading company at the forefront of GMP Active Pharmaceutical Ingredient (API) manufacturing. They specialize in translating bench-scale chemistry into robust, commercial-ready processes — operating across kilo lab, pilot, and commercial scales to deliver high-quality small-molecule APIs that meet the most rigorous regulatory standards.
In this role, you will be responsible for bridging the gap between R&D and full-scale manufacturing. You will translate bench chemistry into plant-ready processes, optimize yield and quality, and support technology transfers across all scales of production. You'll collaborate cross-functionally with R&D, Analytical, QA/QC, Supply Chain, and external customers to ensure timelines and critical quality attributes are met — all within a cGMP-compliant environment. Responsibilities

• Scale-up & Tech Transfer: Convert lab procedures into scalable unit operations including reaction, crystallization, filtration, and drying; author and execute transfer packages and PPQ protocols
• Validation & Compliance: Lead and author process validation documentation, batch records, and change controls; investigate deviations and out-of-specification (OOS) results and drive CAPA resolution
• Cross-Functional Collaboration: Partner closely with R&D/Analytical, QA/QC, Supply Chain, and external customers to meet project timelines and ensure Critical Quality Attributes (CQAs) and Critical Process Parameters (CPPs) are achieved
• Documentation: Write SOPs, technical reports, and summaries suitable for regulatory inspections and internal governance

Qualifications

• Education: BS in Chemistry, Chemical Engineering, or a related discipline
• Experience: 3–7 years of experience in GMP small-molecule API manufacturing and/or process scale-up
• Technical Skills: Demonstrated bench chemistry background with a strong understanding of reaction mechanisms, impurity control, and crystallization science — including chemical mass balance, reaction outcome prediction, and scenario-based problem solving
• Regulatory Knowledge: Solid grasp of cGMP standards, data integrity requirements, and regulatory expectations; strong technical writing ability

What Happens Next
Once you apply, you'll proceed to next steps if your skills and experience look like a good fit. But don't worry — even if this position doesn't work out, you're still in our network. That means our team of expert Science & Clinical recruiters will have access to your profile, making your opportunities limitless.

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As part of our promise to talent, Kelly supports those who work with us through a variety of benefits, perks, and work-related resources. Kelly offers eligible employees voluntary benefit plans including medical, dental, vision, telemedicine, term life, whole life, accident insurance, critical illness, a legal plan, and short-term disability. As a Kelly employee, you will have access to a retirement savings plan, service bonus and holiday pay plans (earn up to eight paid holidays per benefit year), and a transit spending account. In addition, employees are entitled to earn paid sick leave under the applicable state or local plan. Click here for more information on benefits and perks that may be available to you as a member of the Kelly Talent Community.

Why Kelly® Science & Clinical?

Kelly Science & Clinical is your connection to premier scientific and clinical companies looking to hire industry experts just like you. Our team creates expert talent solutions to solve the world’s most critical challenges. Every day, we match science professionals with dream jobs that fit their skills, interests, and career goals-it’s the way we think job searching should be. Nearly 100 percent of our science recruiters have a professional background and education in science, so we know a thing or two about the science market and how to get your expertise noticed.

About Kelly

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