Castra tech stack
Castra builds mostly with Python, Bash, JavaScript, PowerShell. Its stack also includes Azure, Kubernetes, React.js, Angular. Azure is named in 10 of the 15 job postings Castra published in the last 12 months (67%). Counted by Alion from the job postings of Castra, updated Oct 5, 2026.
What programming languages does Castra use?
Python is named in 53% of job postings at Castra, followed by Bash (33%), JavaScript (27%), PowerShell (20%).
C# 
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What frameworks and libraries does Castra use?
React.js is named in 20% of job postings at Castra, followed by Angular (13%), Blazor (7%), Jetpack Compose (7%).
React.js
3 20%
Angular
2 13%
Blazor
1 7%
Jetpack Compose
1 7%
OpenTelemetry
1 7%
Spring Boot
1 7%
Spring Framework
1 7%
Vue.js
1 7%
What cloud and platforms does Castra use?
Azure is named in 67% of job postings at Castra, followed by Kubernetes (60%), AWS (47%), GCP (40%).
Azure
10 67%
Kubernetes
9 60%
AWS
7 47%
GCP
6 40%
OpenShift
4 27%
Apache Kafka
3 20%
Grafana
3 20%
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What developer tools does Castra use?
Docker is named in 47% of job postings at Castra, followed by Git (27%), Terraform (27%), Prometheus (20%).
Docker
7 47%
Git
4 27%
Terraform
4 27%
Prometheus
3 20%
Ansible
2 13%
ArgoCD
1 7%
Bicep
1 7%
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Which engineering practices does Castra ask for?
CI/CD is named in 40% of job postings at Castra, followed by IAM (13%), GitOps (7%), MVVM (7%).
What does each Castra team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
6 postingsDevOps
4 postingsHow does your stack fit Castra?
How is the Castra stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the Castra stack?
Castra scores 72 out of 100 (Modern). 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.
Companies with a stack like Castra
Questions about the Castra tech stack
What programming languages does Castra use?
The languages named in Castra job postings are Python (53%), Bash (33%), JavaScript (27%), PowerShell (20%), C# (20%), as a share of the 15 postings of the last 12 months.
Does Castra use React.js?
Yes. React.js is named in 3 of 15 job postings (20%) and required in 3 of them.
What cloud and platforms does Castra use?
The cloud and platforms named in Castra job postings are Azure (10), Kubernetes (9), AWS (7) (postings in brackets).
What skills do you need for a Backend job at Castra?
Backend postings at Castra most often require AWS (5), Azure (5), Docker (4), GCP (4), out of 6 postings in the last 12 months.
Is the Castra tech stack changing?
Yes. Apache Kafka, Kotlin, IAM, Red Hat first appeared in Castra job postings in the last six months.
How modern is the Castra tech stack?
Castra scores 72 out of 100 (Modern). 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 Castra tech stack?
Alion reads every job posting Castra publishes and tags the technologies each one names. The figures on this page count the 15 postings of the last 12 months and were updated on Oct 5, 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, "Castra tech stack: 62 technologies from 15 job postings", as of Oct 5, 2026. https://alion.io/company/castra/technologies