Careers at Pfizer

Pfizer, a global leader in the pharmaceutical space, are hiring at their state-of-the-art Grange Castle Biotech Plant in Dublin, Ireland. 

Currently the largest pharmaceutical sector investor and employer in Ireland, Pfizer employs approximately 4,000 people within five sites across manufacturing, shared services, R&D, treasury and commercial operations. 

Since opening their first site in Ireland in 1969, the company has invested over $8 billion in operations, solidifying themselves as one the country's leading employers and the main attraction in the pharmaceutical space. 

Globally, Pfizer are the world's largest biopharmaceutical company, with a broad and diversified global product portfolio and leadership across most high-growth therapeutic areas. Many of these new leading medicines are manufactured for global export in Ireland, emphasising the significance and importance of their Irish sites to their international strategy.

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Working at Grange Castle 

The Biotech Plant at Grange Castle is Pfizer's biggest investment in Ireland and one of the largest integrated biotechnology plants in the world. Part of the Pfizer Specialty Biotech manufacturing network, the facility houses a pilot-plant, laboratories and equipment to assist in the production of numerous types of biological drugs.

The site is also home to scientists from Pfizer's biotherapeutics research organisation, who work on drug discovery and optimisation projects in collaboration with other Pfizer research and development sites, as well as various partners.

Leading the global fight against Covid-19, Pfizer are currently completing a multi-million euro investment of the facility, allowing them to produce one of the active drug substance ingredients for the Covid vaccine in Ireland. 

At Grange Castle you will play an integral role in the future of medicine, helping in the development of new and improved ways to prevent and treat disease for the benefit of millions around the world. Pfizer are continuously committed to applying science with innovation to improve health and well-being at every stage of life. 

Job Opportunities

Pfizer are currently hiring at their Grange Castle Biotech Plant for the following roles:

If you do not see a relevant position right now but are interested in a career with Pfizer, please complete the form above and we can notify you when new roles are available.

Why Pfizer? 

At Pfizer you will find a collaborative culture that is inclusive and diverse for all - an integral part of their workplace environment. Pfizer recognise that their people are their most valuable asset and key to success, which means a good work-life balance, wide-ranging benefits and career mobility for employees is fundamental.

The company are also committed to ensuring their people are supported as much as possible. There is a huge focus on developing colleagues and helping them fulfil their career goals, with individual career plans and learning and development opportunities central to their way of work.

You will have the opportunity to work on a diverse range of projects at Pfizer, enabling you to enhance your career internally and see your contribution make an impact globally. All employees are provided with the resources, technology, facilities and environment to enable them to tackle the world's most complex health challenges and make real, life-changing progress.

Join a mainstay of the Irish pharmaceutical industry, developing ground-breaking solutions at Grange Castle.


"I've been here 10 months and I love it. Each day is different and there are constant opportunities to learn and grow. There is a very positive work culture at Pfizer: individual ownership and involvement is encouraged and there is a friendly and open environment among colleagues."

Brian Sheehan

QC Analyst, Pfizer Grange Castle

Help deliver a brighter tomorrow for millions worldwide.

To learn more about the opportunities at Pfizer, complete our form above or apply to one of the current roles here.

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