Graduates oppotunities

Laboratory Technician – Analytical & Microbiology

Job details

• Job location: Zanzibar
• Job category: Agriculture
• Job type: Full Time
• Job posted: September 2, 2026
• Job deadline: September 12, 2026

About this role

The positions are intended to support C-Weed Mwani’s expanding activities in seaweed cultivation, marine resource management, laboratory quality control, R&D, agricultural biostimulants and product development.

Purpose of the position

To support C-Weed Mwani’s Quality Control, Laboratory and R&D activities through reliable execution of routine physicochemical, analytical and microbiological testing of seaweed, seaweed-derived products, agricultural biostimulants, food-related materials and other products under development.

The ideal candidate should be a practical laboratory technician who is comfortable with both wet chemistry and microbiological laboratory work, rather than someone whose experience is limited to one area.

Key responsibilities

• Perform routine physicochemical and analytical testing of raw materials, intermediate products and finished products.
• Conduct wet chemistry analyses according to approved laboratory methods and
• Perform routine microbiological testing, including preparation of media, sample preparation, microbial enumeration and related analyses.
• Operate, maintain and perform basic troubleshooting of laboratory
• Prepare reagents, standards, solutions and culture media
• Perform laboratory calculations, record results and maintain complete laboratory
• Assist in method verification, method development and laboratory R&D
• Support sampling, sample preparation, testing and
• Maintain laboratory records in accordance with Good Laboratory Practice (GLP).
• Follow laboratory SOPs, safety procedures and quality control
• Support implementation and maintenance of laboratory systems aligned with ISO/IEC 17025
• Participate in calibration, verification and routine maintenance activities for laboratory
• Identify abnormal results, out-of-specification results and analytical problems and report them appropriately.
• Maintain laboratory cleanliness, organization, chemical safety and good
• Support QC and R&D testing activities as

Equipment experience

Experience operating or working with the following would be highly desirable:

• UV-Visible Spectrophotometer
• Viscometer
• Mufle Furnace
• Soxhlet Apparatus
• Other routine analytical and microbiological laboratory equipment

Minimum qualifications

• Diploma in Laboratory Technology, Laboratory Sciences, Analytical Chemistry, Chemistry, Microbiology or a closely related discipline.
• Practical laboratory experience is strongly

Required technical competencies

• Wet chemistry and analytical laboratory
• Basic microbiological
• Accurate sample preparation and laboratory
• Good laboratory documentation and data
• Understanding of GLP and laboratory quality
• Basic understanding of ISO/IEC
• Ability to follow SOPs and standardized analytical
• Ability to interpret laboratory results and identify unusual or inconsistent

Added advantages

• Tissue culture
• Biotechnology or biochemistry
• Experience with food, agricultural, environmental or natural-product
• Experience with method validation/verification.
• Experience working in an ISO/IEC 17025-accredited
• Experience with instrumental analytical

General expectation for all three positions

Although each position has a different technical specialization, candidates should demonstrate the following general characteristics:

• Practical and field-oriented
• Ability to work independently and as part of a multidisciplinary
• Good technical documentation and reporting
• Ability to collect accurate and reliable
• Willingness to learn and work across C-Weed Mwani’s evolving R&D and production
• Good communication and interpersonal
• Professional integrity and attention to
• Willingness to work in environments that may require travel, field deployment or relocation depending on the position.