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Senior Scientist, Manufacturing - Process Development

Bristol-Myers Squibb Company
Cruiserath - IE Posted Oct 30, 2026
Full-time

About this role

At Bristol Myers Squibb, our employees often ask, “Who are you working for?”—a question that fuels collaboration, accountability, and urgency in our work. Our purpose-driven culture inspires us to discover, develop, and deliver innovative medicines to prevail over serious diseases. We offer uniquely interesting and meaningful work, opportunities for growth, and a supportive environment that values inclusion, wellbeing, flexibility, and comprehensive benefits. This is work that transforms the lives of patients, and the careers of those who do it.

Key Responsibilities

  • Provide technical leadership and subject matter expertise for downstream unit operations supporting commercial biologics manufacturing.

  • Led tech transfer of commercial and pipeline assets to the Cruiserath facility and wider network, providing technical oversight and recommendations.

  • Lead or support process troubleshooting, root cause analysis, investigations and the development of scientifically sound corrective and preventive actions.

  • Design, execute and interpret laboratory or scale-down studies that support manufacturing investigations, process understanding and technology transfer.

  • Author and review study protocols, technical reports, scientific assessments, regulatory submission content and responses to technical enquiries.

  • Drive continuous improvement initiatives that enhance process robustness, efficiency, compliance and knowledge management.

  • Collaborate across MS&T, Manufacturing, Quality, Process Development, Analytical, Regulatory and external partner organisations to align technical strategy and execution.

  • Evaluate emerging downstream technologies and recommend fit-for-purpose improvements where these could strengthen manufacturing performance.

  • Mentor and coach scientists and engineers, supporting effective technical decision-making and the development of downstream capability.

  • Technical Scope

The role may support technical studies and manufacturing activities across the following downstream operations:

  • Protein chromatography

  • Viral inactivation

  • Viral filtration

  • Ultrafiltration and diafiltration

  • Membrane and depth filtration

  • Primary recovery and centrifugation

  • Process-scale and laboratory-scale downstream equipment, including chromatography and filtration systems

  • Required Qualifications and Experience

  • Degree in chemical or biochemical engineering, biochemistry, biotechnology or a related scientific discipline.

  • Relevant biopharmaceutical industry experience commensurate with the Senior Scientist level. As an initial benchmark: bachelor’s degree with at least 7 years, master’s degree with at least 5 years, or PhD with approximately 2 to 4 years of relevant experience.

  • Strong scientific understanding of protein purification, protein stability and downstream process performance.

  • Demonstrated experience with downstream processing operations and equipment, including chromatography and ultrafiltration/diafiltration systems.

  • Experience supporting commercial manufacturing, process development, technology transfer, validation or manufacturing investigations in a regulated environment.

  • Ability to independently analyse complex technical issues, integrate multiple data sources and develop clear, evidence-based recommendations.

  • Strong technical writing, presentation and stakeholder communication skills.

  • Working knowledge of GMP expectations and the potential manufacturing and regulatory impact of technical decisions.

  • Preferred Qualifications

  • Experience with process characterisation, scale-down model qualification or continued process verification.

  • Experience leading technical transfer activity and support commercial manufacture

  • Experience authoring or contributing to CMC documentation and supporting regulatory inspections or technical responses.

  • Demonstrated experience mentoring colleagues or providing technical leadership within cross-functional teams.

  • Experience applying structured problem-solving, statistical analysis or design of experiments to bioprocess challenges.

  • Core Competencies

  • Scientific leadership

  • Applies deep technical knowledge and sound judgement to complex downstream challenges.

  • Execution

  • Plans and delivers high-quality technical work with appropriate urgency, rigour and documentation.

  • Collaboration

  • Builds productive relationships across functions, sites and external partners.

  • Communication

  • Conveys technical data, risk and recommendations clearly to scientific and non-scientific audiences.

  • Problem-solving

  • Uses structured, evidence-based approaches to identify root causes and sustainable solutions.

  • Coaching

  • Shares knowledge, provides constructive guidance and helps build team capability.

  • Compliance mindset

  • Understands GMP impact and maintains high standards of data integrity and documentation.

  • Continuous improvement

  • Identifies and implements practical opportunities to improve robustness and efficiency.

  • Working Environment and Role Expectations

  • Work is performed through a combination of office and laboratory-based activities, subject to site requirements.

  • The role requires effective prioritisation across planned studies, manufacturing support and time-sensitive technical issues.

  • The successful candidate is expected to work independently while maintaining close alignment with cross-functional stakeholders and site procedures.

  • Occasional support outside standard working hours or travel may be required depending on manufacturing and technology transfer needs.

  • Why you should apply

  • You will help patients in their fight against serious diseases

  • You will be part of a company that encourages excellence and innovation, respects diversity, develops leaders and values its employees.

  • You’ll get a competitive salary and a great benefits package including, but not only, an annual bonus, pension contribution, family health insurance, 27 days of annual leave, access to BMS Cruiserath on-site gym and life assurance

  • We hire for skills and capabilities, not just credentials – if this role excites you, but doesn’t perfectly match your resume, we encourage you to apply anyway.

  • How We Work

  • Where you work matters – because collaboration, innovation and patient impact happen in many settings. Our roles are structured across four work models: site-essential, site-by-design, field-based and remote-by-design. The model assigned to this role is based on its core responsibilities. Learn more at https://careers.bms.com/ways-of-working.

  • Supporting People with Disabilities

  • BMS is dedicated to ensuring that people with disabilities can excel through a transparent recruitment process, reasonable workplace accommodations/adjustments and ongoing support in their roles. Applicants can request a reasonable workplace accommodation/adjustment prior to accepting a job offer. If you require reasonable accommodations/adjustments in completing this application, or in any part of the recruitment process, direct your inquiries to [email protected]. Visit careers.bms.com/eeo-accessibility to access our complete Equal Employment Opportunity statement.

  • Candidate Rights

  • BMS will consider qualified applicants with arrest and conviction records, pursuant to applicable laws in your area.

  • Data Protection

  • We will never request payments, financial information, or social security numbers during our application or recruitment process. Learn more about protecting yourself at https://careers.bms.com/fraud-protection.

  • Any data processed in connection with role applications will be treated in accordance with applicable data privacy policies and regulations.

  • If this posting is missing required information required by local law or incorrect, contact BMS at [email protected] with the Job Title and Requisition number. Do not send application-related inquiries to this email. To check your application status, please login to your Candidate Home Account.

  • R1607862 : Senior Scientist, Manufacturing - Process Development

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