Sr. Principal Process Engineer

At Lilly, we unite caring with discovery to make life better for people around the world. We are a global healthcare leader headquartered in Indianapolis, Indiana. Our employees around the world work to discover and bring life-changing medicines to those who need them, improve the understanding and management of disease, and give back to our communities through philanthropy and volunteerism. We give our best effort to our work, and we put people first. We're looking for people who are determined to make life better for people around the world.

Lilly is currently constructing an advanced manufacturing facility for the production of API molecules. This facility is intended to provide APIs for current and future products, including new modalities. This is a unique opportunity to be a part of the leadership team for the startup of a manufacturing site, and the successful candidate will help to build the organization, the facility and the culture to enable a successful startup into GMP manufacturing operations.

Position Overview
The Senior Principal Process Engineer provides technical leadership for production operations in small molecule or peptide manufacturing. Responsibilities include mentoring process engineers, sustaining process knowledge, supporting process and equipment optimization, managing equipment qualification and capability, and overseeing engineering systems and assets.

During the project delivery and startup phase (expected 2029–2030), the role will be dynamic and collaborative—focused on building the organization, implementing GMP-supporting systems and processes, and shaping site culture to enable successful full-scale manufacturing.

Responsibilities

• Mentor process engineers in core engineering practices for oligonucleotide API supply
• Promote data-driven decision-making using statistical methods and first principles
• Support and review root cause analyses and technical documentation
• Identify and address process knowledge gaps affecting equipment and process performance
• Capture key process knowledge such as material and energy balances, kinetics, and design basis
• Maintain process safety foundations and support hazard reviews
• Ensure equipment qualification aligns with intended use and remains valid after changes or maintenance
• Integrate modeling and simulation to enhance process understanding and control
• Drive continuous improvement in equipment and processes as part of cross-functional teams
• Lead or support tech