
Manufacturing and Supply
Where the
miracles of
science are made
a reality for patients
Senior Maintenance Engineer
At a glance
Our teams produce and deliver over 4 billion units of medicines and vaccines every year, ensuring every breakthrough gets to the people who need it most.
Our state-of-the-art facilities, AI-powered smart factories, and cutting-edge automation are redefining what’s possible: ensuring treatments reach patients faster, safer, and more sustainably than ever before. This is where your skills, ambition, and passion can shape the future of healthcare.
About the Job
Our Team/Overview:
Senior Maintenance Engineer is under the remit of Reliability & Maintenance function, which is part of the Site Engineering & Maintenance organization.
Main Accountabilities:
• Timely execution of preventive/corrective maintenance
• HSE considerations for maintenance (permits, PTW, LOTO)
• WO accuracy and completeness
• Continuous improvement for maintenance operations
Key involvement in Decision Making process
Key roles (D,A,I):
• I: maintenance plans, procedures, work instructions
• A: shop organization and safety (incl. tools, equipment)
• A: maintainability improvements (accessibility, safety, CI)
• A: feedback to reliability engineering and P&S team
Local specificities
Additional Accountabilities:
• Develop a maintenance plan in alignment with Failure Modes and Effects Analysis (FMEA) by incorporating risk management strategies and proactive maintenance practices to prevent equipment failures.
• Ability to create preventive and predictive maintenance strategies for manufacturing equipment, ensuring that the maintenance plan aligns with the global maintenance strategy approach.
• Knowledge in setting up an initial inventory of spare parts based on the criticality of equipment and manufacturer recommendations, ensuring smooth plant operations after startup.
• Ensure that all equipment maintenance activities and setups comply with applicable industry regulations such as cGMP, FDA guidelines, and other relevant standards.
• Proficiency in using SAP to track maintenance schedules, manage work orders, maintain spare parts inventories, and record maintenance history.
• Familiarity with the specialized equipment used in biopharmaceutical plants, including bioreactors, filtration systems, chromatography systems, autoclaves, and clean-in-place (CIP) systems.
• Oversee the maintenance, repair, and troubleshooting of key equipment utilized in the manufacturing process.
• Address equipment failures or breakdowns promptly to minimize production downtime and maintain smooth operations.
• Maintain thorough documentation for compliance purposes, including the creation of maintenance plans, work order logs, change requests, deviations, and corrective actions.
• Collaborate closely with production, quality control, and engineering teams to identify equipment issues, suggest solutions, and implement necessary changes.
• Coordinate with vendors and suppliers for maintenance services and spare parts procurement.
• Identify opportunities to optimize processes, reduce costs, and enhance efficiency in relation to equipment and maintenance practices.
• Assist in training maintenance technicians on proper equipment operation, maintenance procedures, and safety protocols.
• Ensure all maintenance activities are performed safely, adhering to company safety policies, risk assessments, and regulatory requirements.
nullPursue 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
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Why work with us
- We’re problem-solvers and pioneers. United by the belief that everyone deserves a healthier future. We create best-in-class vaccines that prevent disease and protect lives.
- Innovation drives us. From AI and mRNA to next-gen science, we push the boundaries to deliver first- and best-in-class vaccines for infectious diseases worldwide.
- Growth happens here. With bold investments in R&D and world-class facilities, Sanofians across the entire vaccine lifecycle are shaping the future of global health.
- We do what’s right. Sustainability and DE&I drive our positive global impact—because the diverse communities Sanofians represent are the patients we serve.
All-in on diversity
At Sanofi, diverse perspectives fuel the best solutions for patients. Hear from Monique Vessey, our Supply Chain Transformation Leader, on how her background shapes her approach to delivering life-changing medicines.

"Manufacturing and Supply is the bridge between the science that happens in research laboratories and the people and communities we serve."

Brendan O’Callaghan
Executive Vice President of Manufacturing and Supply
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