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Job Title: Validation Engineer Company: Green Tank Technologies Corp. (“Greentank”) Location: Toronto, ON (Liberty Village)  Reporting to: Director of Testing About us Greentank is a technology company specializing in advanced atomization and material science. Focused on innovation, it is redefining vaporization with proprietary heating technology designed to enhance performance, consistency, and safety. With a strong intellectual property portfolio and dedicated manufacturing capabilities, Greentank ensures high-quality production and scalability. Led by an experienced management team and a skilled workforce, the company remains committed to technological advancement and industry leadership. As Greentank enters 2026, it is focused on product innovation, market expansion, and operational excellence. Through strategic growth initiatives, it is well-positioned for long-term success across multiple industries. Our Culture At our core, we are a company that values innovation, collaboration, excellence, integrity, diversity & inclusion, and accountability. Our high-performing and passionate culture is built on these pillars, shaping how we work, interact, and grow together. We foster an environment where our team members are encouraged to think creatively, challenge norms, and contribute meaningfully. Through transparency, recognition, and open communication, we create a workplace where everyone feels valued and inspired. Role Summary We’re seeking a Validation Engineer to join our team of product experts. The Validation Engineer will report to Director of Testing and be responsible for development, optimization, and validation of testing methodologies, and compliant laboratory operations. Key Responsibilities: Testing Execution & Experimental Design Support Develop, refine, and validate scientific test methods for electronic vapor products to ensure accuracy, repeatability, and reproducibility. Identify gaps, limitations, and sources of variability in current testing methodologies; propose and implement method improvements. Define test parameters, sample sizes, test conditions, and acceptance criteria based on risk assessment, DOE principles, and scientific rationale. Assist in structuring fit-for-purpose experimental designs (DoE), ensuring clarity on variables, controls, and success criteria. Quality Management System (QMS) & Compliance Operate within and actively support the development of Greentank’s QMS framework, including: SOP adherence and updates Deviation tracking and escalation CAPA support (Corrective & Preventive Actions) Ensure all testing activities meet internal quality standards and are aligned with regulatory expectations (e.g. health Canada). Maintain audit-ready documentation and support internal/external audits where required. Stay updated on industry standards, regulatory expectations, and emerging scientific approaches related to aerosol science, materials testing, and measurement systems. Data Management & Analysis Ensure all test data is: Accurately recorded, structured, and stored in designated systems Traceable to specific samples, equipment, and test conditions Provide scientific data analysis, calculation, and presentation methods to deliver more accurate and intuitive insights. Maintain data logs, test reports, and digital/physical records in accordance with data integrity principles 。 Support the development and maintenance of centralised data repositories and reporting frameworks. Laboratory Resource Management Manage the full lifecycle of test samples and materials to coordinate sample readiness and availability to meet project timelines. Take the main ownership of testing equipment, tools, and jigs sourcing and development.  Take the main ownership of performing maintenance, calibration and repairs on testing equipment. Take the main ownership of handling routine laboratory