Job title: Process Engineering Intern

• Location: Waterford, Ireland

• Start date: January 2026

• Duration: 6-8 months

About the job 

As a Process Engineering Intern, you will be part of a highly focused and integrated engineering team supporting the manufacturing and packaging of commercial pharmaceutical products. You will gain hands-on experience in a Controlled Not Classified (CNC) environment, contributing to process engineering activities, validation tasks, and continuous improvement initiatives. Your work will support the production of Auto Injectors and Lyo vials, as well as the technology transfer of new products. You will also collaborate with vendors and cross-functional teams to ensure smooth operations and equipment maintenance.

The Product Supply APU is currently expanding and includes multiple platforms for the inspection, assembly, labelling, and cartoning of autoinjectors and prefilled syringes. This internship offers a unique opportunity to develop your engineering skills in a fast-paced, innovative setting.

Ready to grow your skills while helping shape the future of healthcare? At Sanofi, you’ll be empowered to learn, ask questions, and bring your ideas to life – all while supported by inspiring mentors and collaborative teams.

About Sanofi

We’re an R&D-driven, AI-powered biopharma company committed to improving people’s lives and delivering compelling growth. Our deep understanding of the immune system – and innovative pipeline – enables us to invent medicines and vaccines that treat and protect millions of people around the world. Together, we chase the miracles of science to improve people’s lives.

Main responsibilities:

• Ensure compliance with safety standards at all times

• Provide technical support for process and equipment issues

• Drive process and product improvements

• Support qualification and validation of new products and processes

• Analyse machine performance and production data

• Manage improvement projects within defined scope, budget, and timelines

• Contribute to new product introductions and capacity expansions

• Assist with maintenance planning and design changes

• Execute change controls and support OEE and yield improvements

About you   

To excel in this role, you will need to:

• Be currently enrolled in the penultimate year of an undergraduate or postgraduate (Master’s) program, with an expected graduation date in 2027

• Be pursuing a degree in a STEM field (e.g., Engineering, Science, Technology, Mathematics)

• Demonstrate a strong interest in engineering and manufacturing processes

• Have solid analytical and problem-solving skills

• Be proactive, detail-oriented, and eager to learn in a fast-paced environment

• Communicate effectively and work well within cross-functional teams

• Show initiative and ownership in delivering tasks and contributing to projects

• Be comfortable working in a regulated, safety-conscious environment

Why choose us? 

• Stretch your skills through apprenticeships, internships, graduate programs, and international experiences that grow with you. 

• Learn from inspiring mentors and collaborative teams while contributing to real projects that shape the future of healthcare. 

• Build your future with access to the latest tools, digital innovation, and continuous learning that keep you ahead of the curve. 

• Explore more with personalized development plans, short-term gigs, and internal mobility across functions and countries. 

• Grow in a purpose-driven company where your voice matters and your work helps improve millions of lives. 

• Thrive in inclusive, flexible workplaces that support your personal and professional well-being. 

• Launch your career with a company that invests in you — and empowers you to reimagine what’s possible.

#LI-EUR

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Pursue Progress. Discover Extraordinary.

Join Sanofi and step into a new era of science - where your growth can be just as transformative as the work we do. We invest in you to reach further, think faster, and do what’s never-been-done-before. You’ll help push boundaries, challenge convention, and build smarter solutions that reach the communities we serve. Ready to chase the miracles of science and improve people’s lives? Let’s Pursue Progress and Discover Extraordinary – together.

At Sanofi, we provide equal opportunities to all regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, protected veteran status or other characteristics protected by law.

Watch 'One day at Sanofi' and check out our Diversity Equity and Inclusion initiatives at sanofi.com