Regeneron Ireland Posted August 17, 2026

Senior Mechanical Engineer

Limerick, Ireland Full time
Senior
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Regeneron Ireland is the source of truth for this posting and owns the application process. We surface normalized context and market comparison you won't find on the original listing.

About this opportunity

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   Senior Mechanical Engineer   to join our   Site Engineering   team.

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

Where:

Location: Raheen, Limerick

What you’ll do:

Acting as the primary Mechanical Engineering representative within multidisciplinary project teams from concept development through design, construction, commissioning, qualification, and handover

Coordinating with Process, I&C, Electrical, Maintenance, Operations and Quality groups

Establishing, maintaining and continuously improving site mechanical specifications, design guidelines, equipment datasheets, piping layouts, P&IDs, utility designs, calculations, equipment evaluations, and vendor submissions

Supporting contractor management, construction activities, commissioning plans, startup activities, qualification support, and system turnover documentation

Leading mechanical engineering activities supporting manufacturing, laboratories, clean utilities, process utilities, HVAC systems, building services, and site infrastructure projects

Providing technical oversight and reviewing of engineering consultants, contractors, and vendor designs

Participating in and leading design reviews, constructability reviews, risk assessments, HAZOPs, and engineering evaluations

Evaluating new technologies, equipment upgrades, system expansions, and obsolescence replacement projects

Supporting the development of project scopes, business cases, budgets, schedules, resource plans, and technical justifications

Collaborating with Operations, Maintenance, Manufacturing Sciences, Process Engineering, Quality Assurance, Validation, EHS, and Facilities groups

Mentoring junior engineers and providing technical coaching across the Site Engineering organization

The environment and physical rhythms of this role:

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

Let’s find out if we’re a fit:

Bachelor’s degree in Mechanical Engineering or related discipline.

Minimum 8 years of engineering experience with increasing responsibility in mechanical systems, utilities, facilities, or project engineering.

Demonstrated experience leading mechanical engineering activities for projects within pharmaceutical, biotechnology or other highly regulated industries.

Strong knowledge of mechanical systems including HVAC, utilities distribution, piping systems, pumps, pressure vessels, clean utilities, and facility infrastructure.

Thrive today. Grow tomorrow.

#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 - €103,200.00

Job details

Seniority
Senior
Function
Not listed
Therapeutic area
Not listed
Location
Limerick, Ireland
Employment type
Full time

How this role compares

Computed from every other active role in our database, not just this employer's listings.

We currently track 4269 comparable Senior roles across 140 biopharma companies.

4269Comparable roles tracked
4128Currently active
140Companies hiring similar roles
78Countries represented

Salary context

864 of 4269 peers report a salary range (USD, annualized)

Peers share this role's job function and a matching or adjacent seniority level -- not necessarily the same therapeutic area or country.

This roleSubject Not listed on this posting
Only peer reporting · · $0/yr – $0/yr
Peer group range $0 – $462,500 (median $162,600)

Where these roles are based

Top locations among the 4269 comparable roles

United States1403
China366
Germany348
India220
France183
United Kingdom153

+ 72 more countries

Seniority mix

1142 of 4269 peers have a known seniority level

Senior607
Associate Director324
Principal211

Therapeutic area mix

284 of 4269 peers have a known therapeutic area; the rest are genuinely unlabeled, not hidden

Oncology124
Neuroscience54
Immunology40
Dermatology & Aesthetics21
Rare Disease18
Cardiovascular / CVRM7
Gastroenterology6
Respiratory6
Vaccines & Infectious Disease4
Ophthalmology4

Similar opportunities

The closest matches from our peer group, ranked by how similar they are, not how well you'd qualify for them -- treat this as market context, not a guaranteed shortlist; a weak match is labeled as one below.

60%similar
McDermott Laboratories Limited Northern Cross, Ireland Senior
Same function Same seniority Same country
60%similar
AbbVie Dublin, County Dublin Senior
Same function Same seniority Same country
60%similar
Astellas Pharma Mulhuddart, Ireland Senior
Same function Same seniority Same country
60%similar
AbbVie Sligo, SO Senior
Same function Same seniority Same country
60%similar
AbbVie Sligo, SO Senior
Same function Same seniority Same country
50%similar
Lilly KINSALE, Cork, Ireland Associate Director
Same function Adjacent seniority Same country

Notify me about similar jobs

Get an email when we spot other openings like this one – same job function, comparable seniority, roles you'd actually want to see.

How we calculate "similar"

No black box, no LLM guesswork: a deterministic score built from four normalized attributes. Here's this role's own peer group at different match levels, so you can see the mechanism, not just the result.

Every comparison starts from the same 100-point budget: 25 for working in the same function, 40 for the same therapeutic area, 20 for the same or adjacent seniority, 15 for the same country. A dimension we can't confirm on both sides contributes nothing, never a guess, never a free pass.

60%
Senior Risk Management Engineer / Scientist
McDermott Laboratories Limited · Northern Cross, Ireland · Senior
Function Therapeutic area Seniority Country
60%
Senior Technical Analytical Specialist
AbbVie · Sligo, SO · Senior
Function Therapeutic area Seniority Country
50%
Associate Director, Digital Diagnostics & AI
AstraZeneca · Blanchardstown Road North, Dublin, Ireland · Associate Director
Function Therapeutic area Adjacent seniority Country
50%
Associate Director - IBU Strategic Sourcing
Lilly · Cork, Cork, Ireland · Associate Director
Function Therapeutic area Adjacent seniority Country
Unmatched or unknown dimensions score exactly the same: 0 points, never a partial guess. A role we know almost nothing about beyond its function bottoms out at 25%; it never inflates to 100% just because there's little to compare against. Seniority uses a defined ladder (Associate → Manager → Associate Director → Senior → Principal → Director → Senior Director → Executive/VP) so "Director" and "Senior Director" count as adjacent, but "Director" and "Executive/VP" do not.