
Senior/Principal Process Development Sci
GERMANTOWN, WIJobSeen 1w agoSeen in employer's feed 1w ago
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Job overview
The Senior/Principal Process Development Scientist – HPAPIs develops and optimizes synthetic processes for small-molecule APIs, including ADC payloads, linkers, and payload-linker intermediates. The role spans early development through technology transfer to manufacturing, with emphasis on safety, containment, and cGMP environments. The scientist leads technical work, prepares client-facing and regulatory documentation, supports scale-up, and serves as a technical contact for clients.
Skills & qualifications
Skills
Full job description
JOB REQUIREMENTS: Summary of Role The Senior/Principal Process Development Scientist - HPAPIs is accountable for driving the development and optimization of robust, scalable synthetic processes for small molecule APIs - with a focus on highly potent active pharmaceutical ingredients (HPAPIs), payloads, linkers, payload-linker intermediates - from early development to technology transfer into manufacturing, in a fast paced CDMO environment. The incumbent will write and review technical documents including SOPs, training modules, technical transfer documents, specifications, and development reports to be sent to clients or used in regulatory filings and is responsible for ensuring complex technical information is well understood by team associates, management and clients. The position requires superior leadership behaviors of the Sterling core competencies and non-negotiables, as well as expertise in functional competencies included in this position profile. The role requires expertise in the development of synthetic routes and scalable manufacturing processes for highly potent compounds, including antibody-drug conjugate (ADC) payloads, linker technologies, payload-linker intermediates, and related HPAPI molecules, with a strong focus on safety, containment, and successful transfer into cGMP manufacturing environments. Essential Functions * As a part of a cross-functional development team, designs, plans, and executes process development and optimization for HPAPIs, payloads, linkers, payload-linker intermediates, and small molecule APIs, with ownership of synthetic strategy through to robust, scalable processes with minimal supervision. * Performs process characterization through techniques such as Design of Experiments (DOE), and impurity fate/purge studies to understand and control critical process parameters, including those relevant to highly potent compounds and payload-linker syntheses. * Oversees and supports lab to plant scale-up activities providing on site support as needed for critical operations and troubleshooting, including collaboration with analytical, quality, EHS, and manufacturing colleagues to ensure programs are delivered right first time while meeting containment and safe handling requirements for highly potent compounds. * Executes synthesis activities from gram to multi-kilogram scale at up to 20 L scale, including routine maintenance and troubleshooting of laboratory equipment, containment systems, and engineering controls utilized for handling HPAPIs and payload-linker intermediates. * Isolates and purifies products and intermediates by using standard laboratory techniques, including automated preparative chromatography systems. * Designs multi-step synthetic processes from commercially available starting materials to target compounds, including ADC payloads, linker molecules, payload-linker intermediates, highly potent cytotoxic agents, and related pharmaceutical compounds. * Performs routine analytical procedures to monitor reaction progress (i.e. TLC, GC, NMR, HPLC, LC-MS, KF), and interprets and communicates data effectively, including assessment of impurity profiles and product quality attributes. * Prepares project documentation such as development reports, material specifications, containment assessments, and technology transfers of high technical complexity with minimal supervision. * Serves as a chemistry technical lead and point of contact for client technical representatives during project meetings, technical reviews and site visits. * Establishes and coordinates activities at contract chemical and analytical laboratories, as required. * Ensures timely completion and compliance with cGMP, Safety, and all other relevant company training requirements. * Provides technical leadership in the safe handling, process development, scale-up, an To view the full job description please use the link below. https://www.aplitrak.com/?a id=YmJnZW5lcmljLjEyMDEyLjg3NzBAc3Rlcmxpbmdwc2xjb21wLmFwbGl0cmFrLmNvbQ ***** APPLICATION INSTRUCTIONS: Apply Online: https://www.aplitrak.com/?adid=YmJnZW5lcmljLjEyMDEyLjg3NzBAc3Rlcmxpbmdwc2xjb21wLmFwbGl0cmFrLmNvbQ
How this job compares
Set against the 495 open Chemist jobs on Olive Jobs, counted November 4, 2026.
- Pay
- This postingNot listed
- US median$75–101K/yr134 salary ranges
- US median$26–28/hr137 hourly ranges
- Openings
- Olive Jobs lists 27 open Chemist jobs in Wisconsin and 495 across the US. Under 1% of them nationwide are listed as remote or flexible.
- Hiring the most in Wisconsin
- Actalent4 open
- Eurofins US Network4 open
- MILLIPORESIGMA3 open
- Experience
- Chemist postings that state a minimum ask for 2 years of experience at the median; the middle half ask for 1 to 4 years (297 postings).
- Education
- 241 of the 495 open Chemist jobs (49%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on November 4, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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