Senior Microbiologist

Purpose of the Role

The Senior Microbiologist role is central to maintaining and improving the quality, safety, and long-term stability of our biostimulant products. This position is responsible for overseeing microbiological testing, conducting research to support product integrity, and implementing contamination-control measures across the production process.

The role requires strong scientific expertise, practical problem-solving skills, and a consistent focus on continuous improvement and regulatory compliance.

Key Responsibilities

Microbiological Quality Control & Testing

Conduct and oversee routine microbiological testing of raw materials, in-process samples, and finished products, including microbial limit tests, bioburden testing, total plate count and other relevant indicators.

Analyze and interpret microbiological data, preparing actionable conclusions for internal stakeholders.

Contamination Prevention & Production Hygiene

Lead and participate in projects focusing on microbial contamination control and process optimization.

Monitor and verify sanitation standards across production areas using environmental monitoring, equipment swabs, water testing, and air quality sampling.

Support and validate Cleaning-in-Place (CIP), sanitation procedures, and hygiene practices to prevent product spoilage or unwanted microbial growth.

Method Development & Validation

Develop, optimize, and validate microbiological methods and procedures according to GMP, ISO, and applicable regulatory guidelines.

Ensure methods are suitable for biostimulant matrices and can detect contamination risks unique to biological, organic, or fermentation-based products.

Product Stability & Formulation Support

Participate in new product development by advising on microbial stability considerations (pH, water activity, preservatives, nutrient profiles).

Conduct preservative efficacy testing (challenge testing) and support long-term and accelerated shelf-life studies.

Assist in designing formulations and processes to minimize spoilage and ensure product efficacy throughout storage and distribution.

  Investigation, CAPA & Troubleshooting

Lead root cause investigations for microbiological deviations, contamination incidents, or customer complaints.

Develop and implement corrective and preventive actions (CAPA).

Collaborate closely with R&D, QC Chemistry, Production, and Engineering teams to resolve microbiological challenges and enhance process reliability.

  Laboratory Management & Leadership

Oversee microbiology related aspects of existing routine laboratories.

Oversee calibration, media preparation, consumables inventory, and laboratory upkeep.

Provide technical guidance, mentoring, and training to junior team members and production staff where needed.

Requirements

Education

Bachelor of Science (Honours) or Master’s degree in Microbiology

Experience

Minimum of 5 years’ experience in microbiological testing within the pharmaceutical, food, agriculture, bio stimulant, or related industry.

Proven experience in microbial identification, characterization, and contamination-control strategies.

Experience with preservative systems, method validation, challenge testing, stability studies particularly in the biostimulant area is advantageous.

Skills & Competencies

Deep understanding of microbial processes, laboratory techniques and relevant regulatory standards.

Strong analytical and data-interpretation skills, with the ability to present findings clearly to technical and non-technical audiences.

Excellent problem-solving abilities and experience collaborating in cross-functional teams.

High attention to detail, quality-driven mindset, and commitment to scientific excellence.

Ability to work independently in a fast-paced production and research environment.