Skip to main content
Posted 12 June, 2026

Senior Project Engineer

Regeneron Pharmaceuticals, Inc.
Limerick, Limerick, Ireland Full Time
Reference: 121032687

We are seeking a Senior Project Engineer who will be responsible for designing, specifying and commissioning new and renovated biopharmaceutical process equipment. This position will provide engineering support and problem solving support for existing equipment and manufacturing processes.

As a Sr Project Engineer, a typical day might include the following:
  • Designing and specifying cGMP process equipment, piping, and controls
  • Managing small-to-mid-sized projects related to process equipment and manufacturing
  • Assisting in the design review, site acceptance, and installation of equipment
  • Preparing piping and instrumentation diagrams (P&IDs) and other related drawings
  • Developing Process Flow Diagrams (PFDs) for manufacturing processes
  • Supporting the QA Validation department by preparing design documents and assisting in protocol execution
  • Reviewing and approving lifecycle documentation, cleaning validation protocols, and summary reports
  • Assisting with investigations of process equipment, utility systems, and control system anomalies, as well as safety incidents
  • Assisting management with tracking of department throughput and efficiency
  • Representing the engineering department at cross-functional meetings
  • Supervising direct reports as needed
  • Implementing corrective/preventative actions for existing equipment and manufacturing processes
  • Preparing engineering evaluations and test plans, and executing change control documentation
  • Supervising mechanical, electrical, and automation contractors as needed
  • Maintaining a clean and safe working environment by enforcing procedures, policies, and regulations
  • Maintaining company reputation by ensuring compliance with all relevant laws, policies, and regulations


This role may be for you if:
  • You have excellent technical and analytical skills.
  • You are skilled at problem-solving and continuous improvement.
  • You possess strong communication and collaboration skills.
  • You are adaptable and can work in a fast-paced, regulated environment


To be considered for this opportunity you should have a BS/BEng or higher in chemical/process/mechanical engineering with 5+ years of related experience. Direct experience with biopharmaceutical process equipment is preferred. May substitute relevant experience for education.

#LI-Onsite #JOBSIEPR #IRELIM #REGNIRLTO

Does this sound like you? Apply now to take your first step towards living the Regeneron Way! We are committed to building a workplace with an inclusive culture. Regeneron is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion or belief (or lack thereof), sex, sexual orientation, gender identity or expression, gender reassignment, marital or civil partnership status, civil status, pregnancy or parental status, age, disability, nationality, citizenship status, ethnic or national origin, membership of the Traveler community, familial status, genetic information, military or veteran status, or any other characteristic protected under applicable law. Where required, we will provide reasonable accommodation to applicants with known disabilities or chronic illnesses during the recruitment process, unless such accommodation would impose undue hardship.

Where necessary, we disclose salary ranges for roles in all countries in which we operate. The final offer will be determined within the relevant range based on the country of employment, specific role level, and your skills and experience. In some countries, collective bargaining agreements (CBAs) may apply and influence certain elements of pay or benefits. Regeneron offers a competitive and comprehensive total rewards package which may include, depending on country and role: annual bonuses or other incentive plans, equity awards, pension or retirement benefits, 401(k) company match, health and wellness programs, fitness centers, insurance benefits (e.g. medical, dental, vision, life and disability), paid time off, and family support benefits. For additional information about Regeneron benefits in the U.S., please visit https://careers.regeneron.com/en/working-at-regeneron/total-rewards/. For other locations, additional information will be provided during the recruitment process. If you have any questions, please speak with your recruiter.

Please be advised that at Regeneron, we believe we do our best work when we are together. For that reason, many roles are required to be performed on-site. Please speak with your recruiter and hiring manager for more information about on-site expectations for your role and location.

As part of the recruitment process, certain background checks may be conducted in accordance with the laws of the country where the position is based. The purpose of such checks is to verify certain information prior to the commencement of employment such as identity, right to work and educational qualifications.

For jobs in Canada: this posting is for an existing position.

Salary Range (annually)
€54,200.00 - €88,400.00

Sign up for Job Alerts