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Case Study

nextGYM GmbH: Rolling Out New Studios in 5 Minutes Instead of 4 Hours

How WZ-IT moved nextGYM GmbH's staffless 24/7 studios from decentralized Raspberry Pi management to a central, sovereign remote-management and provisioning platform - new locations live in 5 minutes instead of 3 to 4 hours.

nextGYM Management Dashboard
At a Glance

The Project in Brief

Client

nextGYM GmbH

Country

Germany (Leipzig)

Industry

Staffless 24/7 fitness studios (smart gyms)

Challenge

Decentralized per-studio Raspberry Pi devices, 3 to 4 hours of manual setup, individual SSH access, configuration drift and no central control

Solution

Central cloud dashboard with template-based provisioning, Node-RED IoT automation, RBAC and WireGuard mesh VPN

Result

New-studio setup from 3 to 4 hours down to 5 minutes (98 % faster), 100 % automated, monitored 24/7

About the Client

The Challenge

nextGYM GmbH

nextGYM GmbH

nextGYM GmbH operates staffless smart-gym studios accessible around the clock. App check-in via QR code, online membership and self-service only work if the technology in every studio runs reliably. The original infrastructure was based on Raspberry Pi devices installed locally in each studio and maintained individually.

This decentralized architecture led to significant challenges: different configuration states, complex asset management, 3 to 4 hours of manual setup per studio and no central control. Scaling during expansion became increasingly difficult and security-critical.

Achieved Results

From 3 to 4 hours to just 5 minutes: deployment time for new studios reduced by 98 %.

100 % automation and 24/7 monitoring ensure maximum efficiency and reliability.

Market & Trends

Staffless Studios Are the Fastest-Growing Segment

The German fitness market hit a record in 2025 with EUR 6.25bn net revenue (+7.4 %) and 12.36m members (+5.6 %) across 9,647 facilities. The strongest growth comes from the chain and smart-gym segment - exactly the staffless, small-footprint model nextGYM GmbH operates. Scaling that model requires no on-site staff, but technology that lets every location be provisioned, monitored and secured centrally.

+12.6 %

The chain and smart-gym segment grows fastest according to Deloitte; roughly 186 additional smart-gym sites were added in the last year alone.

3 to 6 months

Several staffless-studio operators reach break-even within this window - with just 2 to 4 hours of operator time per week per site (BODYMEDIA).

1,000+ by 2027

fit+ alone opened 250+ studios in six years and targets more than 1,000 - scaling stands or falls with central remote operations.

≈ $20.6bn

That is where the IoT fleet-management market is heading by 2030 (~17 % CAGR, Grand View Research) - every unmanned location is a distributed edge node that must be managed centrally.

Sources: Deloitte / DSSV "German Fitness Market" 2025/2026, BODYMEDIA, Grand View Research.

Transformation

From Manual Management to Fully Automated Cloud

Before: Decentralized Management

Deployment

3 to 4 hours of manual effort

Management

Individual SSH access per device

Configuration

Inconsistent across locations

After: Cloud-Based Automation

Deployment

5 minutes with one click

Management

Central dashboard for everything

Configuration

Unified templates

98%
Time saved on new setup
5 Min
Deployment time per studio
100%
Automation level
24/7
Monitoring & Support
Features

The Solution

Feature icon

Automated Provisioning

Cloud-init and automated scripts set up a new studio with one click - with no manual steps on site.

Feature icon

Central Management

One dashboard for all studios and devices - with a fleet overview and per-location detail view.

Feature icon

IoT Integration

Node-RED controls temperature, ventilation, lighting and other building systems per studio.

Feature icon

Template System

Node-RED configurations are bundled into reusable template packages that auto-deploy for every new studio - no configuration drift.

Feature icon

Secure Remote Access

Fine-grained RBAC, per-site firewall policies, SSO and WireGuard mesh VPN instead of exposed devices.

Feature icon

File Management & Backups

Integrated file browser for location-specific documents plus automated backups and disaster recovery.

You got questions? We are here to help!
Solution & Architecture

One Central Control Plane for the Entire Studio Fleet

At the center sits a central, EU-hosted control plane: the management dashboard with provisioning, RBAC and asset administration. Each studio location is an edge node reachable only through an encrypted WireGuard mesh tunnel - no device is exposed to the open internet. New locations are rolled out from templates and operational within minutes.

Cloud Control Plane (EU-hosted)

Central dashboard, provisioning engine, RBAC, asset and credential management, file browser

Management Dashboard
Provisioning & Templates
RBAC & SSO
File Browser & Backups
WireGuard Mesh VPN

Encrypted connectivity for each site with its own firewall policy - no exposed device

Studio Edge Nodes

Per studio: edge device with deployed template and Node-RED IoT control

Studio 1
Node-RED
Temperature · Ventilation · Lighting
Studio 2
Node-RED
Temperature · Ventilation · Lighting
Studio 3
Node-RED
Temperature · Ventilation · Lighting
Dashboard in Detail

The Management Dashboard in Action

A custom-tailored dashboard perfectly adapted to customer requirements that fully automates repetitive tasks.

Dashboard Overview

Here you can see an overview of the various machines managed through the dashboard. In this example, a new machine 'Studio-3' is being deployed.

nextGYM Dashboard Overview

Templates for New Machines

The software is pre-configured via templates. Node-RED configurations can be combined into template packages that are automatically rolled out when creating new machines.

Node-RED Templates

Detailed Machine Management

Standardized fields for all important data: credentials, configurations, information and notes - everything centrally in one place.

Studio Details

Integrated File Browser

Location-specific files can be stored and secured directly in the dashboard. All documents are exactly where they are needed.

File Browser

User Management & Security

Fine-grained permission management with individual firewall policies, SSO services and mesh VPN support for maximum security.

Permission Management
Technology Stack

Technologies Used

Open, EU-hosted building blocks - no hyperscaler lock-in.

Coolify
Node-RED
Node.js
React
Docker
WireGuard
Nginx
PostgreSQL
Hetzner
Why Custom & Sovereign

WZ-IT: the Partner for Remote Management of Distributed Sites

Off-the-shelf remote support like TeamViewer or per-device licences do not solve the unmanned-site problem: they scale expensively per device, expose targets and provide neither role-based governance nor unified provisioning. Instead, WZ-IT builds a dedicated control plane where secure remote access, provisioning and audit are designed together from the start.

RBAC, Governance & Audit by Design

Fine-grained roles, central credential management and traceable access - a foundation for NIS2-era expectations when managing distributed sites and member data.

Secure Remote Access, Not Bolt-On

Every site is reachable through WireGuard mesh VPN with its own firewall policy - no exposed device, no per-device VPN client. "Reach a remote site safely" becomes a solved, standardized problem.

Sovereign, EU-Hosted, Open Source

Hetzner, Coolify, Docker, Node-RED, WireGuard and PostgreSQL keep data and infrastructure in the EU - with no hyperscaler lock-in. A concrete trust anchor for German and DACH operators.

One Platform for the Whole Site Lifecycle

Provision via templates, operate via dashboard and Node-RED, secure via RBAC, firewall, SSO and VPN, monitor 24/7 - one control plane instead of a toolbox.

nextGYM GmbH is served DACH-locally from Germany - the same remote-management expertise WZ-IT uses to run critical infrastructure in Australia (ABCO Water Systems / AB-View) from a DACH base.

Managing Distributed Sites Centrally - Without On-Site Staff?

We build and operate remote-management and provisioning platforms for unmanned sites and IoT fleets - secure, sovereign, EU-hosted.

Free intro call

Let's talk about your project - honest and no strings attached

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  • Concrete next steps for infrastructure, software or AI

No risk: worst case, you leave with a clearer understanding of your project than before.

Timo and Robin, founders of WZ-IT
Jakob Öschlberger
WZ-IT's advice on our Azure migration was technically sound and completely non-binding right from the intro call - we took away a great deal.
Jakob ÖschlbergerInno7 GmbH

Industry-leading companies worldwide rely on us

  • Rekorder
  • Keymate
  • Führerscheinmacher
  • SolidProof
  • ARGE
  • Boese VA
  • nextGYM
  • Maho Management
  • Golem.de
  • Millenium
  • Paritel
  • Yonju
  • EVADXB
  • Mr. Clipart
  • Aphy
  • Negosh
  • Odiseo Solutions
  • AInergy

What do our customers say?

Andrea Pawlowski
Architecture ConsultingSovereign Software SelectionOpen Source Strategy
I got to know Timo and Robin as dedicated and professional partners who make a lot of things possible for their clients that initially seem impossible. I felt very well advised. The services offered have thoroughly convinced me. (translated)

Andrea Pawlowski

Communications Manager, Golem.de

Golem.de - leading German IT news outlet.

Golem.de
Plan a sovereign open-source stack
Sonja Aßer
Software DevelopmentPHP ModernizationAPI Extension
With Timo and Robin, you're not only on the safe side technically - you also get the best human support! Whether it's quick help in everyday life or complex IT solutions: the guys from WZ-IT think along with you, act quickly and speak a language you understand. The collaboration is uncomplicated, reliable and always on an equal footing. That makes IT fun - and above all: it works! Big thank you to the team! (translated)

Sonja Aßer

Data Manager, ARGE

ARGE Neue Medien - master data & digital standards for plumbing and building technology.

ARGE
Modernize your legacy software
Aleksandr Shuliko
Cloud MigrationAWS ExitProxmox81% Cost Reduction
I recently worked with Timo and the WZ-IT team, and honestly, it turned out to be one of the best tech decisions I have made for my business. Right from the start, Timo took the time to walk me through every step in a simple and calm way. No matter how many questions I had, he never rushed me. The results speak for themselves. With WZ-IT, we reduced our monthly expenses from $1,300 down to $250. This was a huge win for us.

Aleksandr Shuliko

CTO, EVA Real Estate, UAE

EVA Real Estate - leading real-estate agency in Dubai.

EVA Real Estate
Cut cloud cost - up to −81%
Pascal Hakkers
Managed ProxmoxClusterMonitoringHigh Availability
WZ-IT manages our Proxmox cluster reliably and professionally. The team handles continuous monitoring and regular updates for us and responds very quickly to any issues or inquiries. They also configure new nodes, systems, and applications that we need to add to our cluster. With WZ-IT's proactive support, our cluster and the business-critical applications running on it remain stable, and high availability is consistently ensured. We value the professional collaboration and the noticeable relief it brings to our daily operations.

Pascal Hakkers

Managing Director, Aphy B.V., Netherlands

Aphy - AI platform for hotel back-office.

Aphy
Build a high-availability Proxmox cluster
John Hellmerichs
Proxmox & VirtualizationBackupVPNSecurity
WZ-IT provided very competent support in implementing our server and virtualization infrastructure. As part of the project, a Proxmox-based virtualization environment was set up along with a virtual machine for our application systems. Additionally, a structured backup concept was implemented. A particular focus was on security: the setup of a VPN tunnel and the clean implementation of encryption and access concepts were professionally executed. The structured consulting as well as the reliable and swift implementation deserve special mention. We are very satisfied with the services provided and are happy to recommend WZ-IT.

John Hellmerichs

Managing Director, AInergy GmbH

AInergy - consultancy for energy and facility management.

AInergy GmbH
Virtualize with Managed Proxmox
Matthias Zimmermann
Open Source ArchitectureImplementationTechnical Consulting
We have had very good experiences with Mr. Wevelsiep and WZ-IT. The consultation was professional, clearly understandable, and at fair prices. The team not only implemented our requirements but also thought along and proactively. Instead of just processing individual tasks, they provided us with well-founded explanations that strengthened our own understanding. WZ-IT took a lot of pressure off us with their structured approach - that was exactly what we needed and is the reason why we keep coming back. (translated)

Matthias Zimmermann

Managing Director, Annota GmbH

Annota - healthtech startup with an AI documentation assistant.

Annota
Design an open-source AI architecture
Sebastian Maier
Sovereign CollaborationOpen Source StackOperationsMaintenance
Timo and Robin from WZ-IT set up a RocketChat server for us - and I couldn't be more satisfied! From the initial consultation to the final implementation, everything was absolutely professional, efficient, and to my complete satisfaction. I particularly appreciate the clear communication, transparent pricing, and the comprehensive expertise that both bring to the table. Even after the setup, they take care of the maintenance, which frees up my time enormously and allows me to focus on other important areas of my business - with the good feeling that our IT is in the best hands. I can recommend WZ-IT without reservation and look forward to continuing our collaboration! (translated)

Sebastian Maier

Managing Director, Yonju GmbH

Yonju - business coaching and AI products.

Yonju
Get collaboration fully managed
Gabriel Sanz Señor
Production DeploymentCI/CDPaaSOperations
Counting on WZ-IT team was crucial, their expertise and solutions gave us the pace to deploy in production our services, even suggesting and performing improvements over our configuration and setup. We expect to keep counting on them for continuous maintenance of our services and implementation of new solutions.

Gabriel Sanz Señor

Managing Director, Odiseo Solutions

Odiseo Solutions - software engineering for the space industry.

Odiseo Solutions
Ship your prototype to production
Andrea Pawlowski
Architecture ConsultingSovereign Software SelectionOpen Source Strategy
I got to know Timo and Robin as dedicated and professional partners who make a lot of things possible for their clients that initially seem impossible. I felt very well advised. The services offered have thoroughly convinced me. (translated)

Andrea Pawlowski

Communications Manager, Golem.de

Golem.de - leading German IT news outlet.

Golem.de
Plan a sovereign open-source stack
Sonja Aßer
Software DevelopmentPHP ModernizationAPI Extension
With Timo and Robin, you're not only on the safe side technically - you also get the best human support! Whether it's quick help in everyday life or complex IT solutions: the guys from WZ-IT think along with you, act quickly and speak a language you understand. The collaboration is uncomplicated, reliable and always on an equal footing. That makes IT fun - and above all: it works! Big thank you to the team! (translated)

Sonja Aßer

Data Manager, ARGE

ARGE Neue Medien - master data & digital standards for plumbing and building technology.

ARGE
Modernize your legacy software
Aleksandr Shuliko
Cloud MigrationAWS ExitProxmox81% Cost Reduction
I recently worked with Timo and the WZ-IT team, and honestly, it turned out to be one of the best tech decisions I have made for my business. Right from the start, Timo took the time to walk me through every step in a simple and calm way. No matter how many questions I had, he never rushed me. The results speak for themselves. With WZ-IT, we reduced our monthly expenses from $1,300 down to $250. This was a huge win for us.

Aleksandr Shuliko

CTO, EVA Real Estate, UAE

EVA Real Estate - leading real-estate agency in Dubai.

EVA Real Estate
Cut cloud cost - up to −81%
Pascal Hakkers
Managed ProxmoxClusterMonitoringHigh Availability
WZ-IT manages our Proxmox cluster reliably and professionally. The team handles continuous monitoring and regular updates for us and responds very quickly to any issues or inquiries. They also configure new nodes, systems, and applications that we need to add to our cluster. With WZ-IT's proactive support, our cluster and the business-critical applications running on it remain stable, and high availability is consistently ensured. We value the professional collaboration and the noticeable relief it brings to our daily operations.

Pascal Hakkers

Managing Director, Aphy B.V., Netherlands

Aphy - AI platform for hotel back-office.

Aphy
Build a high-availability Proxmox cluster
John Hellmerichs
Proxmox & VirtualizationBackupVPNSecurity
WZ-IT provided very competent support in implementing our server and virtualization infrastructure. As part of the project, a Proxmox-based virtualization environment was set up along with a virtual machine for our application systems. Additionally, a structured backup concept was implemented. A particular focus was on security: the setup of a VPN tunnel and the clean implementation of encryption and access concepts were professionally executed. The structured consulting as well as the reliable and swift implementation deserve special mention. We are very satisfied with the services provided and are happy to recommend WZ-IT.

John Hellmerichs

Managing Director, AInergy GmbH

AInergy - consultancy for energy and facility management.

AInergy GmbH
Virtualize with Managed Proxmox
Matthias Zimmermann
Open Source ArchitectureImplementationTechnical Consulting
We have had very good experiences with Mr. Wevelsiep and WZ-IT. The consultation was professional, clearly understandable, and at fair prices. The team not only implemented our requirements but also thought along and proactively. Instead of just processing individual tasks, they provided us with well-founded explanations that strengthened our own understanding. WZ-IT took a lot of pressure off us with their structured approach - that was exactly what we needed and is the reason why we keep coming back. (translated)

Matthias Zimmermann

Managing Director, Annota GmbH

Annota - healthtech startup with an AI documentation assistant.

Annota
Design an open-source AI architecture
Sebastian Maier
Sovereign CollaborationOpen Source StackOperationsMaintenance
Timo and Robin from WZ-IT set up a RocketChat server for us - and I couldn't be more satisfied! From the initial consultation to the final implementation, everything was absolutely professional, efficient, and to my complete satisfaction. I particularly appreciate the clear communication, transparent pricing, and the comprehensive expertise that both bring to the table. Even after the setup, they take care of the maintenance, which frees up my time enormously and allows me to focus on other important areas of my business - with the good feeling that our IT is in the best hands. I can recommend WZ-IT without reservation and look forward to continuing our collaboration! (translated)

Sebastian Maier

Managing Director, Yonju GmbH

Yonju - business coaching and AI products.

Yonju
Get collaboration fully managed
Gabriel Sanz Señor
Production DeploymentCI/CDPaaSOperations
Counting on WZ-IT team was crucial, their expertise and solutions gave us the pace to deploy in production our services, even suggesting and performing improvements over our configuration and setup. We expect to keep counting on them for continuous maintenance of our services and implementation of new solutions.

Gabriel Sanz Señor

Managing Director, Odiseo Solutions

Odiseo Solutions - software engineering for the space industry.

Odiseo Solutions
Ship your prototype to production
Andrea Pawlowski
Architecture ConsultingSovereign Software SelectionOpen Source Strategy
I got to know Timo and Robin as dedicated and professional partners who make a lot of things possible for their clients that initially seem impossible. I felt very well advised. The services offered have thoroughly convinced me. (translated)

Andrea Pawlowski

Communications Manager, Golem.de

Golem.de - leading German IT news outlet.

Golem.de
Plan a sovereign open-source stack
Sonja Aßer
Software DevelopmentPHP ModernizationAPI Extension
With Timo and Robin, you're not only on the safe side technically - you also get the best human support! Whether it's quick help in everyday life or complex IT solutions: the guys from WZ-IT think along with you, act quickly and speak a language you understand. The collaboration is uncomplicated, reliable and always on an equal footing. That makes IT fun - and above all: it works! Big thank you to the team! (translated)

Sonja Aßer

Data Manager, ARGE

ARGE Neue Medien - master data & digital standards for plumbing and building technology.

ARGE
Modernize your legacy software
Aleksandr Shuliko
Cloud MigrationAWS ExitProxmox81% Cost Reduction
I recently worked with Timo and the WZ-IT team, and honestly, it turned out to be one of the best tech decisions I have made for my business. Right from the start, Timo took the time to walk me through every step in a simple and calm way. No matter how many questions I had, he never rushed me. The results speak for themselves. With WZ-IT, we reduced our monthly expenses from $1,300 down to $250. This was a huge win for us.

Aleksandr Shuliko

CTO, EVA Real Estate, UAE

EVA Real Estate - leading real-estate agency in Dubai.

EVA Real Estate
Cut cloud cost - up to −81%
Pascal Hakkers
Managed ProxmoxClusterMonitoringHigh Availability
WZ-IT manages our Proxmox cluster reliably and professionally. The team handles continuous monitoring and regular updates for us and responds very quickly to any issues or inquiries. They also configure new nodes, systems, and applications that we need to add to our cluster. With WZ-IT's proactive support, our cluster and the business-critical applications running on it remain stable, and high availability is consistently ensured. We value the professional collaboration and the noticeable relief it brings to our daily operations.

Pascal Hakkers

Managing Director, Aphy B.V., Netherlands

Aphy - AI platform for hotel back-office.

Aphy
Build a high-availability Proxmox cluster
John Hellmerichs
Proxmox & VirtualizationBackupVPNSecurity
WZ-IT provided very competent support in implementing our server and virtualization infrastructure. As part of the project, a Proxmox-based virtualization environment was set up along with a virtual machine for our application systems. Additionally, a structured backup concept was implemented. A particular focus was on security: the setup of a VPN tunnel and the clean implementation of encryption and access concepts were professionally executed. The structured consulting as well as the reliable and swift implementation deserve special mention. We are very satisfied with the services provided and are happy to recommend WZ-IT.

John Hellmerichs

Managing Director, AInergy GmbH

AInergy - consultancy for energy and facility management.

AInergy GmbH
Virtualize with Managed Proxmox
Matthias Zimmermann
Open Source ArchitectureImplementationTechnical Consulting
We have had very good experiences with Mr. Wevelsiep and WZ-IT. The consultation was professional, clearly understandable, and at fair prices. The team not only implemented our requirements but also thought along and proactively. Instead of just processing individual tasks, they provided us with well-founded explanations that strengthened our own understanding. WZ-IT took a lot of pressure off us with their structured approach - that was exactly what we needed and is the reason why we keep coming back. (translated)

Matthias Zimmermann

Managing Director, Annota GmbH

Annota - healthtech startup with an AI documentation assistant.

Annota
Design an open-source AI architecture
Sebastian Maier
Sovereign CollaborationOpen Source StackOperationsMaintenance
Timo and Robin from WZ-IT set up a RocketChat server for us - and I couldn't be more satisfied! From the initial consultation to the final implementation, everything was absolutely professional, efficient, and to my complete satisfaction. I particularly appreciate the clear communication, transparent pricing, and the comprehensive expertise that both bring to the table. Even after the setup, they take care of the maintenance, which frees up my time enormously and allows me to focus on other important areas of my business - with the good feeling that our IT is in the best hands. I can recommend WZ-IT without reservation and look forward to continuing our collaboration! (translated)

Sebastian Maier

Managing Director, Yonju GmbH

Yonju - business coaching and AI products.

Yonju
Get collaboration fully managed
Gabriel Sanz Señor
Production DeploymentCI/CDPaaSOperations
Counting on WZ-IT team was crucial, their expertise and solutions gave us the pace to deploy in production our services, even suggesting and performing improvements over our configuration and setup. We expect to keep counting on them for continuous maintenance of our services and implementation of new solutions.

Gabriel Sanz Señor

Managing Director, Odiseo Solutions

Odiseo Solutions - software engineering for the space industry.

Odiseo Solutions
Ship your prototype to production

Let's Talk About Your Idea

Whether a specific IT challenge or just an idea - we look forward to the exchange. In a brief conversation, we'll evaluate together if and how your project fits with WZ-IT.

E-Mail
[email protected]

Leading companies trust WZ-IT

  • Rekorder
  • Keymate
  • Führerscheinmacher
  • SolidProof
  • ARGE
  • Boese VA
  • nextGYM
  • Maho Management
  • Golem.de
  • Millenium
  • Paritel
  • Yonju
  • EVADXB
  • Mr. Clipart
  • Aphy
  • Negosh
  • ABCO Water Systems
Timo Wevelsiep - Lead IoT Solutions Architect

Timo Wevelsiep

Lead IoT Solutions Architect

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