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About Mihai Rizea & Rizea Networks
Principal Network Architecture & IT Security Consultant
Rizea Networks is the consulting practice created by Mihai Rizea – Principal Consultant that designs, secures and operates critical infrastructures for banks, retail and organizations with strict availability and compliance requirements.
Who is behind Rizea Networks?
Network architecture built as if for your own organization
Rizea Networks is the IT architecture and consulting practice founded by Mihai Rizea – Principal Consultant with direct experience as a Network Manager for organizations with dozens of locations, thousands of users, and critical infrastructures in production 24/7.
We went through all the stages of a complex project: real infrastructure inventory, architecture definition, phased migration, security hardening, observability and continuous optimization. No improvisations, no “audit-only documentation” – everything is designed to remain operational in 3–5 years.
- Projects delivered in banking, national retail, NFIs and environments with strict regulations.
- Hands-on expertise on Cisco, Palo Alto, enterprise Wi-Fi, MPLS, VPN, SD-WAN and multi-cloud.
- "Security by design" approach: segmentation, role-based access, logging, backup and tested DR plan.
Clear technical direction, from analysis to operation
In all projects, we follow a simple and very strict axis: analysis, architecture, implementation, observability, continuous optimization. Each stage has concrete deliverables: L2/L3 schemes, security policies, operational procedures, capacity plan, incident runbooks and structured handover to internal teams.
Enterprise architecture
Core–Distribution–Access, HA firewall, DC–HQ–cloud interconnection and clear segmentation.
Observability & SOC
Unified telemetry, smart alerts, dashboards for NOC & management.
SD-WAN connectivity
Resilient multisite links, optimized routing, and QoS for critical applications.
Zero-Trust by design
Micro-segmentation, identity, access policies and permanent auditing.
Mission
To deliver network and security infrastructures that support the business, not block it. Every design decision is tied to a clear business objective, not just a generic “best practice”.
Integrated security
Security is not an added layer, but part of the architecture: segmentation, access controls, filtering, logging, backup and tested recovery plan.
Observability
Without visibility, any network becomes a “black box.” We implement telemetry, alerting, and dashboards that reduce MTTR and eliminate blind spots.
Multi-site connectivity
Robust networks between headquarters, warehouses, data centers, and the cloud – with routing and QoS designed for the organization's critical applications.
Cloud & automation
Hybrid architectures, secure tunnels to Azure/AWS, infrastructure pipelines and documented and tested backup/recovery processes.
Methodology
Complete blueprint, phased validation, resilience testing, failover scenarios and training for internal teams, so you don't depend on just one person.
Conformity
Design aligned with audit requirements and standards: ISO 27001, NIS2, CIS Benchmarks, access policies and critical action logging.
Partnerships
We don't just deliver a project and disappear. We provide post-implementation support, clear SLO/SLI, regular reviews, and a long-term technical roadmap.
Applied innovation
We introduce new technologies – SD-WAN, zero-trust, micro-segmentation – gradually and controlled, depending on the maturity of the organization and budget.
Why Rizea Networks
What do companies that choose R Networks get?
We don't sell "equipment" or "consulting hours", but operational results: uptime, visibility, fewer incidents and an infrastructure ready for the coming years.
Complete blueprint, not just a project
Clear documentation: diagrams, policies, procedures, incident runbooks, capacity plans. Everything needed for internal teams to operate the infrastructure.
Especially useful for auditing, people rotation, and scaling.
Direct access to the architect
You work directly with the person thinking about the architecture, not with layers of account management. Technical discussions with the technical decision maker, without distortions.
Fewer delays, better reasoned decisions.
Maintenance & evolution, not just “deploy”
Optionally, we can stay involved for upgrades, hardening, new tunnels, new locations, and integration with other platforms.
The project remains current, it does not "go out of date" in 1–2 years.
>99.9%
Target availability for designed critical infrastructures
130+ locations
Operate in distributed environments (retail, warehouses, HQ, DC)
5 stages
Clear methodology: analysis → design → implementation → observability → optimization
Trust built over time, not through slogans
Many customers prefer to remain discreet, especially in banking and financial services. Below are some wordings inspired by real feedback – which you can later turn into visual testimonials, once you have the customers’ consent.
★★★★★
“We went from a legacy network that was difficult to understand to a clear, documented, and easy-to-operate architecture. The migration was done in stages, without stopping operations.”
IT director - financial sector
★★★★★
“Wi-Fi and connections between locations are no longer a stress factor. We have visibility, we know what’s happening and who’s in charge when something unexpected comes up.”
Operations Manager – national retail network
If you want to discuss network architecture, security or migrating an existing infrastructure, send a message via the contact page. contact or consult the list of services available.
References in design & security:
NIS2,
ISO/IEC 27001,
CIS Benchmarks.