Castelis tech stack
Castelis builds mostly with C#. Its stack also includes .NET, Kubernetes. C# is named in 1 of the 4 job postings Castelis published in the last 12 months (25%). Counted by Alion from the job postings of Castelis, updated Nov 2, 2026.
What programming languages does Castelis use?
C# is named in 25% of job postings at Castelis.
C#
1 25%
What cloud and platforms does Castelis use?
.NET is named in 25% of job postings at Castelis, followed by Kubernetes (25%), Linux (25%), VMWare (25%).
What developer tools does Castelis use?
Ansible is named in 25% of job postings at Castelis, followed by Terraform (25%).
Which engineering practices does Castelis ask for?
TCP/IP is named in 25% of job postings at Castelis, followed by VLAN (25%).
How does your stack fit Castelis?
How modern is the Castelis stack?
Castelis scores 76 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 0; legacy ones: 0.
How common is the Castelis stack in its industry?
Share of the 6,518 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Castelis
Questions about the Castelis tech stack
What programming languages does Castelis use?
The languages named in Castelis job postings are C# (25%), as a share of the 4 postings of the last 12 months.
What cloud and platforms does Castelis use?
The cloud and platforms named in Castelis job postings are .NET (1), Kubernetes (1), Linux (1) (postings in brackets).
Is the Castelis tech stack changing?
No new technology has appeared in Castelis job postings in the last six months.
How modern is the Castelis tech stack?
Castelis scores 76 out of 100 (Cutting-edge). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 0; legacy ones: 0.
How does Alion know the Castelis tech stack?
Alion reads every job posting Castelis publishes and tags the technologies each one names. The figures on this page count the 4 postings of the last 12 months and were updated on Nov 2, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "Castelis tech stack: 9 technologies from 4 job postings", as of Nov 2, 2026. https://alion.io/company/castelis/technologies