Video Surveillance · Access Control & Alarm Systems
Castellum Security Collective offices and sites
Castellum Security Collective has 11 sites in 1 country; 11 sites have open roles now. The busiest is Oldenzaal. The head office is in Rijsenhout.
Data updated Nov 14, 2026 · Back to the company report
11Sites
1Countries
11Hiring offices
25Open roles
Every site
| Site | Country | Type | Open roles | Roles in 90 days | Hires most for | Engineering | Seen since |
|---|---|---|---|---|---|---|---|
| Rijsenhout | Netherlands | Headquarters | 3 | 2 | Solutions, Industrial Engineering | 0% | Feb 2026 |
| Oldenzaal | Netherlands | Plant / site | 4 | 2 | Field & Service | 0% | Jun 2026 |
| Nieuw-Vennep | Netherlands | Support & operations | 4 | 1 | Operations, Field & Service | 0% | Sep 2024 |
| Nuenen | Netherlands | Plant / site | 3 | 1 | Field & Service | 0% | Nov 2025 |
| Bodegraven | Netherlands | Not classified | 2 | 2 | Support, Field & Service | 0% | Oct 2026 |
| Alkmaar | Netherlands | Not classified | 2 | 1 | Operations, Field & Service | 0% | Feb 2026 |
| Hoogeveen | Netherlands | Not classified | 2 | 0 | Field & Service | 0% | Jul 2026 |
| Veenendaal | Netherlands | Not classified | 2 | 0 | Field & Service | 0% | Mar 2025 |
| Dordrecht | Netherlands | Not classified | 1 | 1 | Field & Service | 0% | Sep 2026 |
| Aalten | Netherlands | Not classified | 1 | 0 | Field & Service | 0% | Jun 2026 |
| Baarn | Netherlands | Not classified | 1 | 0 | Field & Service | 0% | Feb 2025 |
Source: office addresses in postings and company registers
How to cite
Castellum Security Collective, Offices. Alion, Nov 14, 2026. https://alion.io/company/castellumsecurity/offices