Vienna is the natural eastern anchor of the Austrian market and the cross-border twin of Bratislava — 60 km between the two capitals, one of the densest commercial corridors in the EU. For a Slovak integrator with A1 paperwork on standby and a working command of ÖVE/ÖNORM standards, Wien is reachable in a same-week dispatch cycle. We haven't yet delivered a project directly in Vienna; this page is about how we engage the city, what stack we bring, and which segments fit our discipline.
High-end residential, smart-home and private LLM segment
For the Austrian high-end residential market the technical brief usually arrives the same way: client doesn't want cloud, doesn't want subscriptions, doesn't want dependence on a foreign vendor backoffice. The integrator stack that answers that brief: **KNX bus** as the stable hardware layer (shutters, doors, windows, underfloor heating), **Loxone Miniserver Gen 2** as the orchestration brain, **DALI-2** as tunable-white lighting via Helvar drivers, **Frigate VMS** with local Coral TPU accelerators for object detection on outdoor cameras, and **Ollama** with a privately hosted LLM (e.g. Qwen 2.5 14B on a Ryzen 9 + RTX 4090 rig in the utility room) for voice control and a personalised assistant for the owner.
What makes a project of this type interesting isn't the number of integrated systems — it's their **layering**. KNX stays reliable even when the internet drops. The Loxone Miniserver keeps running even when KNX has a local bus error. Frigate has its own NVR loop independent of cloud services. Ollama never sends voice data anywhere outside the house. For an owner asking "what happens when there's lightning outside and the internet's gone for 2 days" — the answer is "nothing happens, the house runs the same as if you were online." That's the design discipline we bring to the segment.
Regulatory framework — Wiener Bauordnung + OIB
In Vienna, building decisions are made under Wiener Bauordnung (WBO) + OIB-Richtlinien (1 mechanical strength, 2 fire safety, 3 hygiene, 4 safety in use, 5 noise protection, 6 energy efficiency). For Loxone-type projects, OIB 4 (fire safety — KNX systems on evacuation routes) and OIB 6 (energy efficiency — DALI-2 tunable white must contribute to the EPB calculation, not just sit alongside it) are particularly relevant.
For electrical installations ÖVE/ÖNORM E 8001 + E 8002 (special environments — sauna rooms, pools, technical cleanrooms in private homes are real, especially in Hietzing and Döbling). For inspections ETV 2020 — periodic electrical-installation inspections every 5 years for residential, annually for commercial above 1,000 m².
Cross-border vector — the Vienna triangle
Vienna sits in one of Europe's strongest cross-border nodes. 60 km to Bratislava, 70 km to the Hungarian border, 250 km to the Czech border. For an integrator who keeps A1 documentation on standby, that means a "Vienna project" in practice often means the Danube area in Bratislava, the supplier orbit around Audi Hungaria Győr, or the Magna Liesing logistics hub. For our operations from Prešov it's a 6-hour drive on D1/A4 — comparable to Bratislava plus one hour through Schwechat.
For on-site visits and spec meetings we fly via BTS (50 minutes from Košice) plus 60 km by car. For longer deployments (a typical Loxone hardware install + commissioning runs 3–4 weeks) we would lodge within reach of Schwechat or directly in Wieden.
Posted Workers — e-ZKO routine
For work in Vienna we need e-ZKO registration via the BMAW portal 7 days in advance, A1 from the Slovak Social Insurance Agency, and documentation showing compliance with the Kollektivvertrag for electrotechnical work (KV Elektro-, Audio-, Video- und Alarmanlagen — current Facharbeiter rate around €21 gross per hour). Cross-border VAT goes via reverse charge under § 19 UStG 1994 — invoice with the client's Austrian VAT number and the standard "Übergang der Steuerschuld" note.
Which pillars fit best
For Vienna unambiguously **Smart Buildings + Software/AI**, with the KNX/Loxone/DALI-2 stack plus Frigate VMS and Ollama-based private LLM as the differentiator. Our tech stack fits precisely here: KNX bus as the foundation, Loxone as orchestration, local AI as the differentiator against integrators still shipping data to AWS/Azure clouds.
For the data centre segment (NTT Wien, Equinix VI1, Interxion VIE1) **Data Centres + Software/AI** with focus on DCIM (EcoStruxure IT), cooling design (rear-door HX for racks above 25 kW), and AI cluster integration for tech firms' R&D branches. We haven't delivered this in Vienna yet; the design stack is transferable from the data centre work we run elsewhere.
For Siemens Mobility Floridsdorf, OMV Vienna, Frequentis and similar enterprise clients — **Industry + Automation** via Sondermaschinenbau and robotic-cell integration. Here we're looking for the first client and we're in the pre-engagement phase.
Conclusion — how we engage Vienna
In Vienna we engage clients through the cross-border channel from Bratislava — Slovak engineering plus Austrian regulatory discipline (ÖVE, OIB, e-ZKO). The first question that lands from high-end residential clients is usually "can you do it without cloud?" — and the answer is yes. That's our differentiator for the Austrian market. For larger commercial projects (data centres, automotive supplier) we're at the early-stage relationship-building phase — the transferable competencies are ready, the first Vienna reference is what we're working towards.