Engineering IT team · Kyiv → worldwide

Describe the task —we'll handle the rest.

IT solutions for business — from a single task to your whole infrastructure: networks, security, automation, self-hosted services, monitoring and support. You don't need to understand the tech: describe the problem and we'll find the solution and own the outcome. A team of engineers, for clients worldwide, except russia and belarus.

response: < 24hfirst consultation: freeformat: B2B / SMBgeography: Ukraine + worldwide
ssh admin@rona-core
/solutions

Not sure which category your task falls into?

That's fine — and it doesn't matter. Just tell us what you need and we'll find the solution. Here's where we're strongest:

01 / network

Networks that stay up.

We design and operate networks on multi-vendor hardware — Cisco, Juniper, MikroTik, FortiGate, Ubiquiti. Hardware is chosen to fit the task and budget, not the other way around. Fault tolerance is built into the architecture, not bolted on later.

5+ vendorsCisco · Juniper · MikroTik · Forti · Ubiquiti
1–3 daystypical office rollout
  • Segmentation, BGP/OSPF, site-to-site VPN — vendor-independent
  • Fault-tolerant multi-WAN and bonding (Ethernet + LTE + satellite)
  • Wi-Fi with no dead zones: guest networks, seamless roaming
net-core · multi-vendor
02 / security

Security & PKI.

Trust infrastructure instead of passwords on sticky notes: certificates, authentication of every device, isolation of critical segments.

802.1Xno stranger's device gets in
EAP-TLSa certificate instead of a password
  • PKI on HashiCorp Vault: CA hierarchy, HSM, automated issuance
  • Cisco ISE, IP telephony and door-access integration
  • Firewall audit, air-gapped networks for critical systems
vault · pki
03 / automation

Business automation.

Orders, invoices, receipts and reports are processed without a human in the loop. n8n workflows — plus custom Python and JavaScript code where no off-the-shelf solution exists.

n8n + codePython · JavaScript
0 manual stepsfrom order to receipt
  • Integrations: EspoCRM, payment gateways, fiscal receipts, POS
  • Custom Python/JS development: scripts, bots, APIs, GUIs
  • Email marketing, payment flows, data synchronization
n8n · python · js
04 / monitoring

Infrastructure monitoring.

We see the problem before your users notice it: metrics, logs and alerts from the whole infrastructure — network, servers, services — on one screen, around the clock.

24/7infrastructure watch
< 1 minfrom failure to alert
  • LibreNMS, Prometheus + Grafana — monitoring at your scale
  • Dashboards, NetFlow analytics, trends and failure forecasts
  • Telegram/email alerts, automatic configuration backups
monitoring · grafana
05 / self-hosted

Self-hosted infrastructure.

Email, CRM, files and even AI — under your control: on your own hardware or on cloud VPS, depending on budget and task. Predictable costs and no dependency on third-party ecosystems.

hardware or VPSto fit your budget
your dataunder your control
  • Proxmox, Ceph, Docker: own servers or cloud VPS
  • Nextcloud instead of Google: files, documents, calendars — air-gapped network if required
  • Mailcow email, PostgreSQL replication, backups, private AI/LLM
proxmox-01 · docker
/support

Support packages.

One-off projects are great, but infrastructure runs continuously. We take your systems under support so you don't have to think about them at all.

Monitoring
We watch your infrastructure 24/7
from €90/mo
  • Monitoring of network, servers and services
  • Alerts on failures via Telegram/email
  • Monthly health and trends report
Discuss support
Enterprise
Tailored to your scale
custom pricing
  • Personal SLA and a dedicated engineer
  • Regular security and capacity audits
  • Participation in infrastructure planning
Discuss support
/principles

How we work.

01

Audit first

No solutions before a diagnosis. We look at what you have and show where the risks are.

02

Everything documented

Every project ends with documentation: diagrams, credentials, runbooks. You're never locked in to us.

03

Safe changes

Work on live systems only with a rollback plan and agreed maintenance windows. Dry-run first, production second.

/faq

Frequently asked questions.

/contact

Let's discuss your task.

Describe the problem in your own words — we'll translate it into a technical scope, estimate the effort and propose options. First consultation is free.

telegram: @Rona_Best
base: Kyiv, Ukraine
response: < 24h