Quality Assurance Technician (Night Shift)

Greenhouse•Mississauga, ON

4d•Onsite

About The Position

Greenhouse is a plant-based beverage company and Certified B Corporation. We believe growth is always possible and that quality and food safety are non-negotiable. Our overnight operations are critical to keeping our facilities compliant, safe, and audit-ready. This role plays a key part in protecting product integrity, enforcing standards, and ensuring every batch meets our quality expectations. We’re hiring an Overnight Quality Assurance Technician to independently oversee quality, food safety, sanitation, and compliance during night shift operations in a beverage manufacturing environment. This is a steady overnight shift (non-rotational). You will serve as the sole Quality Assurance presence and primary decision-maker for quality and food safety during the overnight shift. You will monitor multiple production lines, conduct beverage sensory and specification checks, enforce GMP standards, verify sanitation systems, and apply structured, step-by-step decision-making processes when issues arise. This role is ideal for someone who is observant, decisive, process-driven, and confident working independently, someone who identifies risks early and acts before they become deviations.

Requirements

2+ year of Quality Assurance experience in beverage manufacturing
Experience performing beverage sensory evaluations and product specification verification
Strong working knowledge of GMPs, SOPs, and SSOPs in a liquid processing environment
Demonstrated experience verifying and troubleshooting CIP and COP systems
Strong risk-based thinking and ability to follow structured decision-making processes
Ability to multitask and confidently monitor multiple production lines simultaneously
High confidence with assertive, clear communication when enforcing standards
Strong documentation and traceability skills with high attention to detail
Comfort working independently on a steady overnight shift (non-rotational)
Strong situational awareness—you notice issues before they become deviations
Working knowledge of microbiology, chemical handling (SDS/MSDS), titration, and sanitation chemistry
Proficiency with Excel, Word, and PowerPoint

Responsibilities

Independently monitor multiple beverage production lines during overnight operations
Ensure compliance with GMPs, SOPs, SSOPs, HACCP, SQF, and regulatory requirements (CFIA, FDA, Organic, Kosher)
Actively enforce GMP standards and address non-compliance immediately
Apply structured, step-by-step decision-making processes when initiating product holds, line stops, or escalations
Conduct beverage sensory evaluations (taste, aroma, appearance, texture)
Verify finished product specifications (pH, Brix, viscosity, fill weights, packaging integrity, etc.)
Identify and address deviations from product specifications in real time
Verify sanitation and allergen control programs for beverage processing equipment (tanks, fillers, lines, transfer systems)
Verify CIP (Clean-in-Place) and COP (Clean-out-of-Place) systems, ensuring cycles meet defined parameters. Confirm chemical concentrations, contact times, temperatures, and titrations meet specification. Release equipment and filling lines for use accordingly.
Ensure sanitation activities comply with SSOP requirements
Take corrective action when sanitation standards are not met
Effectively prioritize and monitor QA oversight across multiple active production lines
Maintain strong situational awareness across the facility while working independently
Identify early warning signs of quality or food safety risks
Intervene early to prevent non-conformances rather than reacting after the fact
Complete QA documentation accurately and on time during overnight shifts
Maintain organized, audit-ready traceability and retention sample records
Document investigations, root cause analysis, and corrective actions clearly and thoroughly
Communicate assertively when quality or GMP standards are not met
Provide thorough written shift handovers outlining observations, actions taken, and required follow-ups
Escalate issues appropriately following defined protocols