Principal Engineer

Eli Lilly Eli Lilly · Pharma · Indianapolis, IN

This role is within Bioproduct Research and Development (BR&D) at Eli Lilly, focusing on developing and optimizing biologically derived products. The Principal Engineer will design and execute experiments for cell culture processes, analyze data, author technical reports, and support scale-up and technology transfer. The role also involves evaluating emerging technologies and implementing automation, with a preference for candidates comfortable using AI tools for analysis and design.

What you'd actually do

  1. Design and execute experiments to evaluate, optimize, characterize, and troubleshoot processes and equipment with minimal guidance.
  2. Operate suspension cell culture in shake flasks and small-scale bioreactors (e.g., Ambr250, 5 L benchtop bioreactor).
  3. Analyze and interpret data independently.
  4. Author technical reports, protocols, and regulatory-supporting documentation.
  5. Present clear, actionable, scientific insights to project teams and leadership.

Skills

Required

  • B.S. degree with 6-9 years, or M.S. degree with 3-6 years, of relevant industry experience; degree in chemical engineering, biological engineering, or related discipline.
  • Experience in operating cell culture in shake flasks and small-scale bioreactors.
  • Strong written and verbal communication skills; able to communicate with operations staff and management.
  • Strong problem-solving skills
  • High learning agility

Nice to have

  • Ability to work independently and mentor junior scientists in a collaborative, cross-functional environment.
  • Comfort using AI tools (e.g., Claude, Copilot) for analysis and design.
  • Working knowledge of molecular biology, omics, metabolic flux analysis, and PAT.
  • Creativity to identify improvement opportunities and the initiative to implement them.
  • Proven ability to manage multiple priorities and deliver results in a fast-paced, evolving environment.
  • Experience managing external collaborations with CDMOs.

What the JD emphasized

  • Qualified applicants must be authorized to work in the United States on a full-time basis.