Engineering
Electrical engineering & building systems
- Electrical engineering (high & low voltage)
- Safety & protection systems
- Network & data technology
- E-mobility & maintenance
GROUP OVERVIEW
Group Services
Strategic, governance-oriented, and steering services of Giannoulis Holding GmbH to ensure sustainable development, scalability, and long-term value creation across the group.
Core service areas
Direct entry into Engineering, Automation, and Development.
Automation
Smart building & digital control
- Consulting & planning
- Programming & visualization
- Training
- Maintenance & support
Development
Project & planning services across the lifecycle
- Consulting & planning
- Construction monitoring
- Execution
- BIM / digital twin (project-dependent)
Holding services
Focus: strategy, governance, steering, and group-wide guardrails. Operational delivery remains with the subsidiaries.
Strategic direction & planning
Giannoulis Holding defines the group’s long-term strategic direction.
This includes prioritizing business fields, structurally developing existing activities, and preparing and integrating new service and growth areas.
Operational execution is carried out independently by the respective subsidiaries.
Governance & compliance
The holding establishes group-wide governance and compliance structures to ensure transparency, controllability, and regulatory conformity.
This includes governance principles, risk management frameworks, reporting lines, and overarching oversight and control mechanisms across all group companies.
The result is clear accountability, documented decisions, and robust standards for audit, data protection, and risk.
Financial steering & control
Giannoulis Holding is responsible for financial steering at group level through consolidated reporting, structured budget coordination, and cross-company performance monitoring.
Subsidiaries retain full responsibility for their operational business and profit & loss within the defined framework.
This creates reliable decision foundations, clear comparability, and early transparency on deviations and required actions.
Operational support
The holding supports subsidiaries through shared standards, structured processes, and organizational guardrails.
The goal is to increase efficiency, scalability, and consistency across the group while fully preserving technical and operational autonomy.
This strengthens collaboration and quality group-wide without slowing execution on the ground.
Note
Operational, project-based, and customer-facing services are delivered exclusively by the respective subsidiaries of Giannoulis Holding GmbH. Detailed service descriptions, certifications, and project portfolios are provided on each company’s pages.
Next step: choose a subsidiary and view details/portfolio there.
View subsidiaries