Jobs › AbbVie

Principal Research Scientist I - Process Engineering

AbbVie · North Chicago, IL · Full time · Research

Posted Aug 10, 2026 · We last checked this listing on Oct 6, 2026

Apply at AbbVie

Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

The posting asks for proven project leadership in drug product development. Tell me about leading a program where the process kept failing.

What they are checking: Whether they can lead persistently and methodically through a stubborn process problem, rather than guessing or giving up under pressure.

Tell me about a scale-up that went badly. What did you miss?

What they are checking: Whether they can be honest about scale-up failures and what they learned, since this discipline regularly produces difficult setbacks.

What part of drug product manufacturing do you think is most ready to change in the next few years?

What they are checking: Whether they think about the field beyond their current projects.

This is a Principal Research Scientist I seat in research and development process engineering at North Chicago, described as shaping the future of drug manufacturing. What would you want to know about the portfolio before joining?

What they are checking: That they ask what they would actually work on behind the recruiting language.

What would you do

How do you decide when a process is robust enough to transfer to manufacturing?

What they are checking: Whether they make sound judgments about process robustness before transfer, because a premature transfer is very expensive to fix.

How do you work with formulation scientists who want a process that is difficult to manufacture?

What they are checking: Whether they can manage the natural tension between formulation and manufacturability constructively, reaching a product that works at scale.

About the work

This role names direct compression, wet and dry granulation, hot melt extrusion, tableting and encapsulation. Which of those is hardest to scale from development to commercial, and why?

What they are checking: Whether they have real experience across the named drug product processes and understand the specific scale-up challenges each one presents.

Walk me through diagnosing a tableting problem that only appears at full scale.

What they are checking: Whether they can troubleshoot scale-dependent problems methodically, which is the core skill of a process engineer in drug product development.

When would you choose hot melt extrusion over a conventional approach for a poorly soluble compound?

What they are checking: Whether they can reason through formulation and process selection for poorly soluble compounds, choosing approaches based on the molecule's needs.

How do you design an experimental program when you have limited material and limited time?

What they are checking: Whether they design efficient experiments under limited material and time, showing real discipline in the design of experiments.

Practice this interview out loud.

Offer builds a real interview for this exact role at AbbVie from your resume and this job description, asks the questions one at a time, and tells you what landed. The first one is free.

Practice this out loud

The full job description

As published by AbbVie.

Are you a passionate engineer who thrives at the intersection of science, innovation, and impact? AbbVie's Research and Development Process Engineering team is on the front lines of transforming cutting-edge science into life-changing medicines — and we're looking for a Principal Research Engineer I /II to help us push the boundaries of what's possible in drug product development. Join us at our North Chicago, IL hub and be part of something bigger. This isn't just a role — it's an opportunity to shape the future of drug manufacturing . You'll bring your proven project leadership in drug product development to drive synthetic molecule candidates from concept to commercial-ready processes, making real decisions that accelerate medicines to patients who need them most. You'll be a master of drug product manufacturing platforms — direct compression, wet & dry granulation, hot melt extrusion, tableting, encapsulation, and film coating — and you'll apply your deep understanding of powder material properties to unlock new levels of manufacturability and product performance. When challenges arise, you're the person who steps up to troubleshoot complex process and material issues with creativity and rigor. And when it's time to go big, you'll translate bench-scale breakthroughs into pilot plant realities through expert scale-up execution . At AbbVie, we celebrate bold ideas, encourage experimentation, and give talented engineers the resources and autonomy to actually innovate . If you're ready to raise the bar, lead with influence, and leave your mark on some of the world's most important medicines — we want to hear from you. Key responsibilities include: • Lead drug product manufacturing process early phase development for synthetic molecule development candidates within the AbbVie pipeline. • Collaborate with development CMC teams to ensure manufacturing processes are aligned with intended commercial manufacturing sites. • Advance scientific expertise within the function — mentoring peers and influencing senior leadership with your expert insights. • Drive the development of technologies and scientific innovations that expand AbbVie's small molecule formulation capabilities. • Partner cross-functionally to build strategies that directly power AbbVie's drug discovery and development programs. • Champion compliance with AbbVie's safety, quality, and regulatory standards. • BS (+14 yr experience) MS (+12 yr. experience) or PhD (+6 yr experience) in Chemical Engineering, or equivalent scientific/engineering degrees • Strong project leadership experience for drug product development. • Advanced understanding drug product manufacturing platforms with direct compression, wet & dry granulation, and hot melt extrusion which include tableting, encapsulation and film coating. • Advanced understanding of powder material properties and their impact on drug product manufacturability and final product performance. • Ability to apply/interpret models during drug product development to optimize development. • Experience writing regulatory submissions and generating the data required to gain approval • Demonstrated ability to troubleshoot process/material issues. • Apply techniques to scale-up the development process to pilot plant equipment. • Displays technical awareness in various aspects of drug development, adherence to rigorous scientific methods, and commitment to the scientific process. • Strong drive for learning new techniques and technologies. • Excellent oral and written communication skills. • Demonstrated ability to work collaboratively in a cross-functional team setting. Preferred: • Drug Substance Crystallization development knowledge Applicable only to applicants applying to a position in any location with pay disclosure requirements under state or local law: ​ • The compensation range described below is the range of possible base pay compensation that the Company believes in good faith it will pay for this role at the time of thisposting based on the job grade for this position. Individual compensation paid within this range will depend on many factors including geographic location,and we may ultimately pay more or less than the posted range. This range may be modified in the future. ​ • We offer a comprehensive package of benefits including paid time off (vacation, holidays, sick), medical/dental/vision insurance and 401(k) to eligible employees.​ • This job is eligible to participate in our long-term incentive programs. ​ Note: No amount of pay is considered to be wages or compensation until such amount is earned, vested, and determinable. The amount and availability of any bonus, commission,incentive, benefits, or any other form of compensation and benefits that are allocable to a particular employee remains in the Company's sole and absolute discretion unless anduntil paid and may be modified at the Company’s sole and absolute discretion, consistent with applicable law.​ AbbVie is an equal opportunity employer and is committed to operating with integrity, driving innovation, transforming lives and serving our community.  Equal Opportunity Employer/Veterans/Disabled. US & Puerto Rico only - to learn more, visit https://www.abbvie.com/join-us/equal-employment-opportunity-employer.html US & Puerto Rico applicants seeking a reasonable accommodation, click here to learn more: https://www.abbvie.com/join-us/reasonable-accommodations.html

Apply at AbbVie