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Principal Facilities Engineer

Regeneron
Raheen, Limerick Posted Sep 8, 2026
On-siteEUR 63,200 - 103,200 / year

About this role

Principal Facilities Engineer

locations

Limerick

time type

Full time

posted on

Posted Today

job requisition id

R48619

Build our future together:

At Regeneron, we use science and innovation to develop life-changing medicines for people with serious diseases. Regeneron is currently seeking a Principal Facilities Engineer to join our Facilities Operations, Utilities & HVAC team.

This position offers the opportunity to contribute to a fast-growing, science-driven organization making a meaningful difference to patients worldwide.

When & where:

  • Location: Raheen, Limerick

What you’ll do

  • Designing and specifying cGMP clean/grey utilities, & HVAC equipment, piping, ducting and/or controls
  • Managing small-to-mid sized projects related to utilities & HVAC equipment & services
  • Conducting troubleshooting for complex issues with plant equipment issues and associated systems, identifying and recommending corrective actions
  • Assisting in the design review, site acceptance and installation of equipment
  • Supporting the QA Validation department by preparation of design documents and assists in protocol execution
  • Assisting in investigations of utility systems, and control system anomalies as well as safety incidents
  • Implementing corrective/preventative actions for existing equipment and maintenance processes
  • Preparing engineering evaluations and test plans for and executes modification change control documentation
  • Interpreting P&IDs, equipment/system layouts, wiring diagrams and specifications in planning and performing maintenance and repairs
  • Maintaining company reputation by enforcing compliance with all relevant laws, policies and regulations

The environment and physical rhythms of this role:

  • You have strong analytical and interpersonal skills
  • You are able to prioritise and re-prioritise as needed and adapt to change
  • You are comfortable working in a fast-paced setting

Let’s find out if we’re a fit:

  • Principal - Requires BS/BA in Mechanical engineering with 8+ years of relevant experience or equivalent combination of education and experience.

  • Thrive today. Grow tomorrow.

  • IRELIM #JOBSIEST #LI-Onsite

  • Does this sound like you? 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 during the recruitment process, unless such accommodation would impose undue hardship.

  • Salary Range (annually)

  • €63,200.00 - €103,200.00

  • About Us

  • Regeneron is a leading biotechnology company that invents life-transforming medicines for people with serious diseases. Founded and led for over 30 years by physician-scientists, our unique ability to repeatedly and consistently translate science into medicine has led to nine FDA-approved treatments and numerous product candidates in development, almost all of which were homegrown in our laboratories. Our medicines and pipeline are designed to help patients with eye diseases, allergic and inflammatory diseases, cancer, cardiovascular and metabolic diseases, neurology, infectious diseases and rare diseases.

  • Regeneron is also proud of award winning culture of innovation, being recognized as a Great Place to Work in 2021, Fast Company’s Best Workplace for Innovators in 2020, and Forbes JUST companies in 2020, among others.

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