Job title: Process Engineering Intern

• Location: Waterford, Ireland

• Start date: January 2026

• Duration: 8 months

• Hiring Manager: Kieran MacNamara

• Grade: L1.1

About the job 

As a Process Engineering Intern at Sanofi, you will support both daily operations and ongoing continuous improvement initiatives within the pre-filled syringe manufacturing process. Your responsibilities will include assisting in the production of monoclonal antibody (mAb) commercial products, contributing to the technology transfer of new products, and supporting the introduction of capacity enablers. You will work as part of a highly focused and collaborative Engineering Team in a sterile manufacturing environment.

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:

• Support continuous improvement projects in formulation, filling, thawing, and autoclave areas.

• Assist with single-use technology selection and component qualification.

• Contribute to daily operations of the pre-filled syringe manufacturing area.

• Participate in investigations and corrective actions to reduce rejections.

• Liaise with vendors and external labs during investigations.

• Help prepare defect trend reports with cross-functional teams.

• Support process engineering tasks (cycle development, deviations, change controls).

• Provide assistance on aseptic syringe filling line equipment.

• Contribute to performance metrics delivery (SQDCI).

About you   

To excel in this role, you will need:

• To be currently pursuing a degree in an Engineering discipline or a related field

• A desire to develop problem-solving skills

• Strong technical writing skills

• Excellent analytical and problem-solving abilities

• A readiness for continuous learning and improvement

• An open personality and a professional communication style

• High motivation and drive

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

null

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