What jobs is Castellum Security Collective hiring for right now?
As of Nov 14, 2026, Castellum Security Collective has 31 open jobs on Alion. 20 of them state a salary (65%). They are posted in 10 cities. 2 allow remote or hybrid work. Most open roles: Field & Service 22, Operations 3, Solutions 2. Its postings score C on the Alion truth index.
How Castellum Security Collective hires
Castellum Security Collective scores C on the Alion truth index (A is best, E worst), measured over 31 open roles re-checked against its own hiring board: 55% look like ghost listings, 0% have gone stale and 0% are the same role posted again. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
What Castellum Security Collective posted in the last two weeks
Which roles Castellum Security Collective is hiring for
Where Castellum Security Collective is hiring
Castellum Security Collective hires from 10 offices across 1 countries, holding 22 of its open vacancies between them.
How the work at Castellum Security Collective is set up
Salaries in Castellum Security Collective vacancies
20 of 31 vacancies state a salary (65%). The range below is built from those 20 stated figures only, never from an estimate.
Open vacancies at Castellum Security Collective
Questions about jobs at Castellum Security Collective
Is Castellum Security Collective hiring right now?
Yes. As of Nov 14, 2026, Castellum Security Collective has 31 open jobs on Alion.
What roles does Castellum Security Collective hire for?
Castellum Security Collective is hiring mostly for Field & Service, Operations and Solutions. The largest group is Field & Service with 22 open vacancies.
How much does Castellum Security Collective pay?
65% of vacancies at Castellum Security Collective state a salary. Across those 20 stated figures the range runs from $51k to $61k, with a median of $54k.
Where does Castellum Security Collective hire?
Castellum Security Collective has open vacancies in 10 places, most of all in Netherlands, Oldenzaal, Nieuw-Vennep. Castellum Security Collective is run from Rijsenhout.
Does Castellum Security Collective offer remote work?
Yes. 2 of the open vacancies at Castellum Security Collective allow remote or hybrid work, which is 6% of the board.
How long have Castellum Security Collective vacancies been open?
Half have been on Alion for 101 days or less. 16 vacancies at Castellum Security Collective have been listed for more than 90 days, and postings of that age are far more often out of date.
How reliable are Castellum Security Collective job postings?
Castellum Security Collective scores C on the Alion truth index (A is best, E worst), measured over 31 open roles re-checked against its own hiring board: 55% look like ghost listings, 0% have gone stale and 0% are the same role posted again.
How do you apply to Castellum Security Collective?
Castellum Security Collective accepts applications through Recruitee, so the form opens on that system rather than on Alion.
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How to cite this page
These figures are published under a free licence. You may reuse them, including commercially, as long as you credit Alion and link back to this page.
Alion, "Castellum Security Collective: 31 open jobs", as of Nov 14, 2026. https://alion.io/company/castellumsecurity/jobs
Licence: CC BY-SA 4.0Map: OpenFreeMap, OpenStreetMap. City coordinates: GeoNames (CC BY 4.0)