Consulting for GACP- and GMP-compliant cannabis production systems: facility planning, quality management and audits

Croptimizer UG (haftungsbeschränkt)

Berlin (Schönwalder Str. 16) · Berlin (Cannabis Future Hub, Holzmarktstr. 66)New on Amplifa

2025Founded

2Locations in Berlin

UG (haftungsbeschränkt)Legal form, HRB 277466 B (AG Charlottenburg)

About Croptimizer

Croptimizer UG is a consulting company founded in 2025 by Stellan Zytur and based in Berlin. The company supports cannabis clubs (cultivation associations), medical cannabis production companies and research institutions from the initial concept phase through to stable operation – with a focus on regulatory-compliant, GACP- and GMP-conformant production systems. The range of services covers project development and licensing procedures under MedCanG, KCanG and AMG, the establishment and optimization of quality management systems, GACP/GMP audits, cultivation planning with nutrient and lighting strategies, and facility and infrastructure planning including floor plan design, site analysis and owner representation. Croptimizer UG is registered as a consulting firm in the BAFA programme promoting business consultancy for SMEs. The owner combines more than seven years of hands-on experience in the German cannabis industry with training at Humboldt University of Berlin.

Site: Berlin
Processes: Project development & setup of cannabis production systems (cannabis clubs, medical cannabis), Quality management & audits (GACP/GMP compliance, qualification of technical systems,, Cultivation planning & production consulting (nutrient and lighting strategies, variety consulting,, Facility & infrastructure planning (site analysis, floor plan design, design of technical, Planning & licensing of cannabis facilities (MedCanG, KCanG, AMG), Consulting on infrastructure, cultivation, quality management and compliance, GACP/GMP audits, Project development and licensing procedures (MedCanG, KCanG, AMG)
Materials: GACP Compliance, GMP Compliance, Quality Management Systems, Licensing procedures MedCanG / KCanG / AMG
Founded: 2025
Industries: Medical cannabis production, Cannabis clubs / cultivation associations, Research institutions, Agriculture & horticulture

01
Site analysis & usage concept
02
Project development & licensing procedures
03
Facility & infrastructure planning
04
Setup & design of the production system
05
Qualification & validation
06
QM setup & audits
07
Regulatory approval & operation

Services & Methods

GACP

GACP Compliance

Good Agricultural and Collection Practices as the basis for cultivation planning and external audits of cannabis production.

GMP

GMP Compliance

Qualification of technical systems and GMP documentation for pharmaceutical manufacturing of medical cannabis.

QMS

Quality Management Systems

Establishment, optimization and validation of standardized processes including internal audits and audit preparation.

MEDCANG

Licensing procedures MedCanG / KCanG / AMG

Development and support of procedures for licensing cannabis facilities under German law.

Locations

Berlin (Schönwalder Str. 16)

Business address / Legal notice

Berlin (Cannabis Future Hub, Holzmarktstr. 66)

Cannabis Future Hub location

Industries

Medical cannabis productionCannabis clubs / cultivation associationsResearch institutionsAgriculture & horticulture

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Project development & setup of cannabis production systems (cannabis clubs, medical cannabis)Engineering	–	–	–	–	–
Quality management & audits (GACP/GMP compliance, qualification of technical systems,Testing	–	–	–	–	–
Cultivation planning & production consulting (nutrient and lighting strategies, variety consulting,Engineering	–	–	–	–	–
Facility & infrastructure planning (site analysis, floor plan design, design of technicalEngineering	–	–	–	–	–
Planning & licensing of cannabis facilities (MedCanG, KCanG, AMG)Engineering	–	–	–	–	–

Additional services

Consulting on infrastructure, cultivation, quality management and complianceGACP/GMP auditsProject development and licensing procedures (MedCanG, KCanG, AMG)Establishment and design of cannabis clubs and medical cannabis production systemsRegulatory communicationBusiness plans & site strategiesEstablishment and optimization of quality management systemsQualification of technical systems & GMP documentationValidation of standardized processesInternal audits and audit preparationSupplier qualificationExternal GACP auditsCultivation planning and production consulting (nutrient/lighting strategies, variety consulting)Hygiene conceptsPlanning and evaluation of scientific trial seriesFacility and infrastructure planningFloor plan design for production facilities and laboratoriesDesign of technical infrastructureProject management and owner representationBAFA-subsidized business consulting for SMEs

Reference customers

Humboldt University of Berlin (guest scientist, Cannabis Research Lab)

History

2025
Founding of Croptimizer UG by Stellan Zytur – consulting on infrastructure, cultivation, quality management and compliance; GACP/GMP audits; projects for medical facilities and cannabis clubs.
2022
December 2022 to July 2025: Senior Manager Production at German Cannabis Standard GmbH, Berlin – planning and licensing of cannabis facilities (research, cultivation association, medical cannabis), cooperative research project “Cannabis Underground” in a decommissioned mine.
2021
April 2021 to November 2022: Cultivation and manufacturing at Demecan GmbH, Ebersbach – commissioning of the production facility, GMP qualification of equipment and systems, audits at producers in Australia, Canada and South Africa. Since March 2023 also guest scientist at the Cannabis Research Lab