Probiotic Microbiologist

Long Island Labs Llc•Town of Islip, NY

3d•$80,000 - $95,000

About The Position

Long Island Labs is seeking a Probiotic Microbiologist to lead molecular and cellular testing of probiotic products. The role designs and runs PCR/qPCR assays, extracts DNA from complex matrices, and uses flow cytometry to identify, quantify, and characterize probiotic strains. The successful candidate owns specialized probiotic testing protocols and translates complex data into clear, defensible results for clients and internal teams. The position involves molecular assay development and execution, DNA extraction, cellular analysis, specialized probiotic testing, data interpretation and reporting, and maintaining laboratory quality and compliance. Work is performed primarily in a laboratory environment and includes exposure to biological materials, chemical reagents, and laboratory equipment.

Requirements

Hands-on expertise in PCR, qPCR, DNA extraction, and flow cytometry.
Strong ability to interpret complex biological data and troubleshoot assay development.
Excellent written and verbal communication skills for reporting and collaborative research.
Wear required personal protective equipment and follow biosafety and chemical hygiene procedures.
Ability to stand or sit for extended periods, perform repetitive fine-motor tasks such as pipetting, and lift up to 25 lbs.

Nice To Haves

Ph.D. in Biology, Microbiology, Molecular Biology, or a closely related field is strongly preferred; candidates with an M.S. and extensive industry experience will also be considered.
Direct background in probiotic testing, microbiome research, or microbial strain characterization.
Experience working in an ISO/IEC 17025-accredited or other regulated testing laboratory.

Responsibilities

Design, optimize, validate, and execute PCR and qPCR assays for microbial identification and quantification, including primer/probe selection, standard curves, and efficiency and specificity checks.
Perform DNA extraction from complex biological matrices, such as capsules, powders, foods, beverages, and fermentation samples, and verify extract quality and concentration.
Use flow cytometry for cellular analysis, live/dead viability testing, and population characterization, including staining strategies, gating, and instrument quality control.
Lead specialized probiotic testing protocols, including strain identification, stability (shelf-life) testing, and efficacy evaluation.
Support label-claim verification by correlating molecular, cytometric, and plate-count results.
Analyze complex datasets, troubleshoot assay performance, and draw defensible conclusions.
Maintain rigorous, contemporaneous documentation of methods, raw data, and results.
Present findings to cross-functional teams and clients through written reports and verbal briefings.
Ensure laboratory operations comply with standard operating procedures, quality control guidelines, and the lab's ISO/IEC 17025 quality system.
Author and revise SOPs and support method validation, internal audits, and corrective actions as needed.
Follow laboratory safety, biosafety, and waste-handling requirements.