
Join a state-of-the-art vaccines manufacturing facility in Dundalk and play a key role in shaping and embedding Environmental, Health & Safety standards across a growing operational site.
As a Senior EHS Specialist, you will lead the implementation of site-wide EHS programmes, ensuring compliance with regulatory requirements while fostering a strong safety culture. Acting as a trusted partner to site leadership and a deputy to the EHS Lead, you will have the opportunity to influence how EHS standards, systems, and behaviours are embedded across the organisation.
This is an exciting opportunity for an experienced EHS professional who enjoys building programmes, driving change, engaging stakeholders, and making a visible impact across a complex manufacturing environment.
Adaptability, Biosafety, EHS Auditing, EHS Compliance, EHS Program Management, Environmental Regulatory Compliance, Health and Safety Legislation, Incident Investigations, Occupational Safety and Health Programs, Pharmaceutical Industry, Process Safety Management, Safety Programs, Self Motivation, Training and Development
Current Employees apply HERE
Current Contingent Workers apply HERE
We keep the patient at the very heart of all that we do and strive to find solutions and treatments for some of the world's most challenging healthcare needs.
As an equal opportunity employer, we are proud to be a company that embraces the value of bringing diverse, talented, and committed people together.
Please don't hesitate to contact the Talent Acquisition Advisor assigned to this role should you need any support during our recruitment process.
We are committed to flexible working where possible, and this is why our Company has introduced a new hybrid working model for office-based colleagues around the world.
Please feel free to speak to us about what flexibility means to you during your application.
Invent solutions to meet unmet healthcare needs, please apply today.
Merck & Co., Inc., Rahway, NJ, USA, also known as Merck Sharp & Dohme LLC, Rahway, NJ, USA, does not accept unsolicited assistance from search firms for employment opportunities. All CVs / resumes submitted by search firms to any employee at our company without a valid written search agreement in place for this position will be deemed the sole property of our company. No fee will be paid in the event a candidate is hired by our company as a result of an agency referral where no pre-existing agreement is in place. Where agency agreements are in place, introductions are position specific. Please, no phone calls or emails.
Regular
Hybrid
09/24/2026
*A job posting is effective until 11:59:59PM on the day BEFORE the listed job posting end date. Please ensure you apply to a job posting no later than the day BEFORE the job posting end date.

At MSD, known as Merck & Co., Inc., Rahway, NJ, USA in the United States and Canada, we are unified around our purpose: We use the power of leading-edge science to save and improve lives around the world. For more than 130 years, we have brought hope to humanity through the development of important medicines and vaccines. We aspire to be the premier research-intensive biopharmaceutical company in the world – and today, we are at the forefront of research to deliver innovative health solutions that advance the prevention and treatment of diseases in people and animals. We foster a diverse and inclusive global workforce and operate responsibly every day to enable a safe, sustainable and healthy future for all people and communities. For more information, visit www.msd.com and connect with us on Facebook, Instagram, Twitter, and YouTube.