Close to infrastructure
Software for cloud resources, local systems, edge devices, VPNs, remote sites, and technical operating processes.
Custom software with infrastructure and operations built in.
Custom software for companies whose processes do not fit into standard SaaS.
I build production-ready platforms, dashboards, and automation systems for infrastructure, IoT, remote access, provisioning, and operational processes - with deployment, monitoring, and operations considered from the start.
100+
Projects
12+
Industries
Software, Cloud & Ops
Focus
Custom Platforms
Provisioning
IoT & Edge
Managed Operations
Not standard web development. Software for real operating environments.
Many developers build web interfaces. I build systems that have to run reliably in production: with clear roles, interfaces, deployment, and an operating model.
Production-ready
Architecture, deployment, CI/CD, monitoring, backups, security, and maintainability are planned from the beginning.
Operations-oriented
Not just features, but stable systems that can be extended, monitored, and operated after launch.
Especially suitable for
industrial companiestechnical service providersSaaS providersoperators of distributed sitesIoT and edge projectsmanaged service providerscompanies with grown software
What I build
When standard software is not enough, teams often end up with spreadsheets, manual work, or fragile internal tools. I turn that into reliable platforms that fit how your company actually operates.
01
Internal Platforms & Business Tools
Custom web platforms for operational processes that cannot be mapped cleanly into standard software.
Operating platformsAdmin dashboardsWorkflowsCustomer portalsRoles & permissions
For companies that do not want another spreadsheet or assembled workaround, but a clean platform for real processes.
Example: Internal dashboard for operational teams with role model, audit logs, reporting, and connected business systems.
02
Infrastructure & Provisioning Portals
Software for automating cloud, server, site, or development environments.
Self-service portalsCloud resourcesProxmoxKubernetesTerraform / Ansible
For teams that no longer want to provision infrastructure manually, but standardize and automate it in a traceable way.
Example: Portal for managing customer environments and automatically provisioning new instances.
03
IoT, Edge & HMI Platforms
Platforms for distributed sites, plants, machines, gateways, and local infrastructure.
Site managementBrowser HMIRemote accessDevice managementMQTT
For companies whose software must not only display data, but make real technical infrastructure accessible, controllable, and operable.
Example: Remote-access platform for HMI access across distributed sites with role-based customer access.
04
Monitoring & Operations Platforms
Dashboards, alerting, and operational overviews for systems, devices, infrastructure, and applications.
GrafanaPrometheusLokiHealth checksAlerting
For teams that need to understand operating states and act reliably, not just collect data.
Example: Operational overview for applications, infrastructure, and devices with health checks, escalation logic, and a clear view for technical teams and decision-makers.
05
AI/MVP Production Hardening
Turning existing prototypes, MVPs, and AI-generated applications into production-ready systems.
Code reviewSecurity hardeningAuthCI/CDMonitoring
For teams that quickly built a prototype and now need a system that is secure, maintainable, and production-capable.
Example: Lovable, Bolt, v0, or Cursor prototype with clean data model, auth, deployment, monitoring, and backup concept.
When I am the right fit
Typical situations where external technical depth creates clarity quickly.
- 01You need a custom platform, but not a classical web agency.
- 02Your MVP works, but it is not production-ready.
- 03Your software depends on infrastructure, devices, sites, or cloud resources.
- 04You want to provision cloud, server, or customer environments automatically.
- 05You have HMI, IoT, edge, or remote-access requirements.
- 06Your existing application has grown and is hard to operate.
- 07You want to move away from manual processes, spreadsheets, or fragile scripts.
- 08You need secure roles, permissions, audit logs, and traceable access.
Plan. Build. Run.
From idea to running system.
The difference: operations are not an afterthought. They shape architecture and development from the beginning.
01
Plan
I clarify requirements, user roles, technical risks, interfaces, infrastructure, security requirements, and the operating model. The result is a realistic scope and an architecture that fits the project.
02
Build
I build the application: frontend, backend, APIs, data model, integrations, auth, roles, dashboards, and automation. Always with deployment, maintainability, and operations in mind.
03
Run
I bring the software into production: hosting, CI/CD, monitoring, backups, updates, security, documentation, and optional ongoing operations.
How a project with me can start
The entry point depends on whether software already exists, a new system is planned, or a prototype needs to become production-ready.
01
Scope software project
For early ideas, unclear requirements, or several possible paths.
Includes
- +shared understanding of the problem
- +target picture and initial scope assessment
- +risks and technical dependencies
- +recommendation for the next step
Result: A clear first assessment of whether review, discovery sprint, implementation, or operations makes sense.
02
Discovery & Architecture Sprint
For projects where architecture, scope, and operations need to be clarified before development starts.
Includes
- +requirements and role model
- +system architecture
- +data model and interfaces
- +infrastructure and deployment concept
- +security and operations requirements
- +effort estimate and roadmap
Result: A reliable foundation for development, budget, and implementation.
03
Build / Implementation
For new platforms, dashboards, portals, and automation systems.
Includes
- +frontend and backend
- +APIs and integrations
- +auth, roles, and permissions
- +data model
- +deployment
- +documentation
- +production-oriented setup
Result: A custom-built application that is not only completed, but made usable in production.
04
Review & Production Hardening
For existing applications, MVPs, or AI-generated prototypes.
Includes
- +code and architecture review
- +security and database review
- +deployment and infrastructure check
- +monitoring and backup concept
- +concrete stabilization roadmap
Result: A clear plan for turning a prototype or grown system into a viable production application.
05
Managed Operations
For systems that need to run reliably after launch.
Includes
- +hosting and infrastructure
- +monitoring and alerting
- +updates and security patches
- +backups and recovery
- +CVE monitoring
- +technical development
Result: A managed system instead of software that is left alone after launch.
Track record from production systems
Three selected project examples from software, infrastructure, and operations in real environments.
nextGYM GmbH · Germany
Multi-location management and deployment automation for unmanned gyms
Context
nextGYM operates unmanned gyms with local site infrastructure, IoT components, and recurring deployment processes.
Problem
New sites had to be technically prepared, configured, and integrated into existing processes. The manual effort was high and hard to scale.
Solution
Development of a central platform to manage and provision local site infrastructure. New gyms can be prepared automatically, including IoT integration, templates, VPN, SSO, and operational management.
Result
New site provisioning reduced from several hours to a few minutes. Central management of distributed gyms with IoT and edge integration.
Cloud-InitNode-REDIoTVPNSSOEdge DevicesProvisioningOperations
ABCO Water Ltd. · Australia
Remote-access and HMI platform for distributed water treatment systems
Context
ABCO Water works with distributed technical plants where secure remote access, plant overview, and controlled customer access are important.
Problem
HMI/PLC-adjacent systems and remote sites had to be made securely reachable without uncontrolled network access or manual access workarounds.
Solution
Platform for secure management and remote access to distributed technical plants. With plant management, HMI/PLC-adjacent access, remote sites, role-based access, and secure network architecture.
Result
Central, controlled access to technical infrastructure across distributed sites with secure customer access and an operationally usable platform structure.
HMIPLC-adjacentRemote AccessWireGuardIoTAudit LogsIndustrial SoftwareRemote Sites
EVA Real Estate LLC · United Arab Emirates
Cloud migration to sovereign European infrastructure
Context
EVA Real Estate used an existing cloud infrastructure with high ongoing costs.
Problem
The existing AWS infrastructure caused high monthly costs and did not provide the desired level of data control.
Solution
Migration from AWS to European infrastructure with significant cost reduction, better data control, and a cloud architecture designed for long-term operations.
Result
81 percent cost reduction from USD 1,300 to USD 250 per month, full data sovereignty, and ROI after 4 months.
HetznerProxmoxMigrationGDPRCost OptimizationManaged Infrastructure
The technical depth behind it
I combine software engineering, infrastructure, DevOps, IoT, security, and operations. Not as a loose tool list, but as the foundation for resilient systems.
Software Engineering
TypeScript · React · Next.js · Node.js · Python · Go · Java/Spring Boot · APIs · backend services · data models · multi-tenant
Infrastructure & Cloud
Hetzner · Proxmox · Docker · Kubernetes · Rancher · AWS · Azure · GCP · IONOS · OVH · Terraform · Ansible
Operations & Observability
Grafana · Prometheus · Loki · backups · disaster recovery · CI/CD · monitoring · alerting · incident readiness
IoT, Edge & Remote Access
LoRaWAN · ChirpStack · MQTT · Node-RED · ThingsBoard · WireGuard · NetBird · OPNsense · HMI · remote access
Identity & Security
SSO · OAuth/OIDC · Authentik · Keycloak · roles/permissions · zero trust · audit logs
Open Source & Sovereign Infrastructure
self-hosted SaaS · Nextcloud · Mattermost · GitLab · Odoo · ERPNext · European providers · GDPR-oriented infrastructure
Development with operational reality. Not just architecture on paper.
I am Timo Wevelsiep. For years I have built and operated software and infrastructure systems for companies where technology must not only work, but remain viable over the long term.
My focus is custom software for complex operational environments: internal platforms, cloud and infrastructure automation, IoT/edge systems, HMI/remote-access solutions, dashboards, and production-ready web applications.
I do not work from consulting frameworks, but from practice: real client projects, my own infrastructure, production systems, and operations experience. That is why I think about software beyond features: deployment, monitoring, security, cost, maintainability, and operations matter from the start.
Wevelsiep Advisory is my personal expert brand for this kind of software development: technically deep, infrastructure-aware, and focused on production systems. My work as Managing Director at WZ-IT and owner of merkaio contributes practical experience; both are not positioned as the main brands on this site. Out of Wevelsiep Advisory I also run veriploy, ongoing technical oversight for AI-built software.
Technically deep
Hands-on in software, cloud, infrastructure, IoT, and operations.
Production-oriented
Architecture, deployment, monitoring, and maintainability are considered from the beginning.
Open Source & Sovereignty
Where sensible: open standards, European infrastructure, and less vendor lock-in.
Insights
All postsAI & Automation
Vibe Coding in Production: AI-Generated Code, EU Sovereignty, and the Stack That Actually Holds
Vibe coding with Cursor, Claude Code, v0 or Bolt ships MVPs in hours - but 50% of AI-generated code has security flaws. The practical pillar guide: review, patches, CI/CD, and the EU-sovereign stack reframe.
Strategy
What is a Fractional CTO? Responsibilities, costs, and when it pays off
A Fractional CTO is an external Chief Technology Officer on a part-time basis. Responsibilities, costs, comparison to Interim CTO, and when the model is actually worth it.
Frequently asked questions
Do you build software yourself or only advise?
I focus on technical conception, architecture, and development of production-ready custom software. Depending on the project, I take on technical leadership, architecture, and implementation myself or work with trusted technical resources. The focus is not theoretical advice, but systems that can actually be built and operated.
How are you different from a classic web agency?
Classic web agencies often build websites, frontends, or standard web applications. I focus on software connected to infrastructure, cloud, devices, sites, IoT, security, or operations. That includes deployment, monitoring, backups, role models, audit logs, and long-term maintainability.
Which projects are you especially suited for?
Especially suitable projects include internal platforms, customer portals, operational dashboards, provisioning portals, IoT/edge platforms, HMI/remote-access systems, and existing applications that need to be productionized or modernized.
Do you also take over ongoing operations?
Yes. If desired, I take care of hosting, monitoring, updates, backups, security patches, and ongoing development. Operations are considered in the architecture from the beginning so the application does not become a problem after launch.
Can you take over existing software?
Yes. Typical entry points are code review, architecture review, infrastructure analysis, security check, and a concrete plan for stabilization or further development. This is especially useful for grown internal tools, MVPs, or software without a clean deployment and operations concept.
Do you work with AI-generated software?
Yes. Especially with applications built in tools such as Cursor, v0, Bolt, or Lovable, the bottleneck is often not the prototype but security, architecture, data model, deployment, and operations. I help turn such prototypes into viable production systems.
Is Fractional CTO still an offer?
Yes, but not as the main focus. Strategic sparring, architecture reviews, and technical due diligence are still possible, especially when they lead to concrete implementation, modernization, or operations.
Do you work with existing teams?
Yes. I can implement independently or collaborate with existing development, IT, or operations teams. Often the interface between software development, infrastructure, and operations is the most important part of the project.
Can you only take on architecture or review?
Yes. If implementation is not desired yet, architecture reviews, code reviews, infrastructure reviews, or technical second opinions are possible. The goal is always a concrete, actionable assessment, not theoretical slideware.
How does a project start?
Usually with a short triage call. Depending on the situation, that is followed by a discovery and architecture sprint, a review of existing systems, or a concrete proposal for development and operations.
I will help you scope your software project.
In 15 minutes I clarify with you what this is about: a new platform, existing software, production hardening, IoT/HMI requirements, infrastructure automation, or ongoing operations. After that you know whether a review, discovery sprint, or development project makes sense.
15 minutes · free · no obligation