About portier
Built for Long-Term Control of Physical Access
Who We Are
portier develops software to control mechanical keys and electronic access systems.
For more than 30 years, we have supported organisations with complex locking systems and high security requirements.
Today, our products are used in hospitals, utilities, government agencies, financial institutions and large enterprise environments across Europe.
We focus on one domain: physical access control that holds up over time.
Why We Build What We Build
Physical access fails in predictable ways:
- Keys remain in circulation.
- Access rights stay active after people leave.
- Rules vary by site.
- Records are reconstructed during audits.
portier exists to replace informal handling with controlled issuing, defined rules and complete records.
We do not replace what already works.
We bring structure, consistency and traceability to it.
Our Operating Principles
These guide how we build and deploy portier.
Innovate
Relentlessly
We improve the way physical access is controlled.
Innovation must improve control, not introduce complexity.
Prioritise
What Matters Most
We focus on risk, accountability and operational clarity.
We build what holds up in real environments.
Empower with
Autonomy and Pride
Responsibility sits with the people closest to the work.
Ownership improves outcomes.
Champion Continuous
Improvement
We learn from deployments.
We refine what we ship.
We remove waste and improve performance over time.
Build Lasting
Relationships
Physical access software is long-term infrastructure. We work with customers and partners accordingly.
Trust is built over years.
Our Team
Decades of Domain Expertise. Aligned on Execution.
Michael leads portier with a focus on long-term product discipline and operational clarity. He previously helped grow a health technology company into complex enterprise and Defence environments before acquiring portier to modernise physical access control without losing its three-decade foundation.
Michael Stuer
CEO
Wina leads product design with a focus on how facilities and security teams actually work. She turns complex access processes into clear, structured software that reduces friction and removes guesswork.
Wina Tansari
Product Design Lead
Tafaquh leads engineering and ensures portier systems remain stable, scalable and reliable in complex enterprise environments. He focuses on fundamentals that hold up under real operational pressure.
Tafaquh Fiddin
Engineering Lead
Christian Helms
Business Development
& Security Analyst
Jesse Valeri
Customer Success Specialist
Nanang Suryadi
Product Engineer
Rohmad Sasmito
Product Engineer
Selma Fatimah
Graphic Designer
Advisory Board
Georg Stüer
Christian Stüer
Media & News
For journalists and analysts covering access, compliance, and infrastructure.
We partner with journalists, analysts, and industry experts to share insight into digital infrastructure, physical security, and access management software.
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Governments are starting to notice physical access
Physical access controls are in scope for ISO 27001 and government compliance frameworks. Most organisations cannot demonstrate what the standards…
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Identity is not the missing primitive in physical access
Cybersecurity settled who owns identity a decade ago. The access industry is now arguing about reopening that question, and the…
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Physical security keeps solving problems that IT solved years ago
Identity in physical access is treated as a unique problem. · 6 min read
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