Microbiology Jobs at Diageo, UK
Diageo is hiring a Microbiologist to join its Beer Manufacturing team at the Guinness Packaging Site in Runcorn, England. This is a full-time, permanent role. The Microbiology Jobs at Diageo offer exciting opportunities to support microbiological quality, food safety, and compliance across a large-scale, 24/7 beverage manufacturing operation. Ideal for professionals with strong microbiology expertise, this role plays a critical part in ensuring product integrity and world-class brewing standards.
Job Details:
- Job Title: Microbiologist
- Company: Diageo (Guinness Beer Packaging)
- Location: Runcorn, England (Primary Site)
- Additional Locations: Manchester, Liverpool
- Job Type: Full-time, Permanent
- Work Environment: Site-based, 24/7 operation
- Job Requisition ID: JR1120885
- Posted On: 23 December 2025
- Application Deadline: 05 January 2026
- Industry: Food & Beverage Manufacturing / Microbiology
About the Company:
Diageo is one of the world’s leading consumer goods companies, producing iconic brands enjoyed across the globe. With more than 27,000 employees worldwide, Diageo’s Supply Chain and Manufacturing teams play a vital role in sourcing, producing, and delivering premium beverages. The Guinness Packaging facilities in Runcorn and Belfast are key production hubs, supported by ongoing investments in technology, quality, and operational excellence.
Educational Requirements for the Microbiologist Role:
- Degree in Microbiology, Food Science, or a related scientific discipline
- Relevant laboratory or industrial microbiology experience
- Experience in beverage, food, or manufacturing environments is advantageous
Key Responsibilities of the Microbiologist:
- Perform routine and positive-release microbiological testing across the site
- Conduct classical microbiology techniques including aseptic sampling, plating, staining, microscopy, and product testing
- Prepare analytical reagents and manage laboratory consumables and stock levels
- Participate in microbiological ring schemes and support internal and external audits
- Provide timely and accurate microbiological data to support production and quality decisions
- Support Quality Sample Plans and compliance with food safety certifications (FSSC 22000, ISO 9000)
- Assist with commercialization trials and continuous improvement initiatives
- Collaborate with central microbiology experts and participate in weekly microbiology review calls
- Provide cross-functional support across the wider Quality team when required
Skills Required for the Microbiologist Role:
- Strong technical knowledge of classical microbiology techniques
- Experience working in analytical, microbiological, or manufacturing laboratories
- High level of accuracy, attention to detail, and data integrity
- Solid understanding of GMP, food safety, and quality standards
- Excellent communication and stakeholder engagement skills
- Ability to work effectively in a fast-paced, 24/7 production environment
- Experience in beverage manufacturing or brewing analysis is an advantage
Benefits of the Microbiology Jobs at Diageo:
- Permanent role with a globally recognized organization
- Opportunity to work at a high-volume, advanced manufacturing site
- Exposure to world-class brewing and microbiological standards
- Inclusive, diverse, and supportive workplace culture
- Career development within Diageo’s global Supply Chain network
- Contribution to iconic brands with international reach
- Strong focus on safety, quality, and continuous improvement
