Callista tech stack
Callista builds mostly with SQL, Java, TypeScript, JavaScript. Its stack also includes Azure, Databricks, Angular, PostgreSQL. Azure is named in 20 of the 40 job postings Callista published in the last 12 months (50%). Counted by Alion from the job postings of Callista, updated Nov 13, 2026.
What programming languages does Callista use?
SQL is named in 45% of job postings at Callista, followed by Java (43%), TypeScript (33%), JavaScript (33%).
SQL
18 45%
Java
17 43%
TypeScript
13 33%
JavaScript
13 33%
Python
7 18%
Kotlin
5 13%
C#
1 3%
Go
1 3%
Show all (12)
What frameworks and libraries does Callista use?
Angular is named in 33% of job postings at Callista, followed by Hibernate (8%), Spring Boot (8%), Pytest (3%).
What databases does Callista use?
PostgreSQL is named in 18% of job postings at Callista, followed by Azure SQL Database (10%), Delta Lake (8%), MS SQL (5%).
PostgreSQL
7 18%
Azure SQL Database
4 10%
Delta Lake
3 8%
MS SQL
2 5%
ElasticSearch
1 3%
OpenSearch
1 3%
What cloud and platforms does Callista use?
Azure is named in 50% of job postings at Callista, followed by Databricks (33%), Kubernetes (25%), Power BI (13%).
Azure
20 50%
Databricks
13 33%
Kubernetes
10 25%
Power BI
5 13%
Apache Kafka
4 10%
Spark
4 10%
GitLab
3 8%
AWS
2 5%
Show all (20)
What developer tools does Callista use?
Docker is named in 13% of job postings at Callista, followed by Git (13%), pySpark (10%), Azure Data Factory (5%).
Docker
5 13%
Git
5 13%
pySpark
4 10%
Rest API
2 5%
Terraform
2 5%
dbt
2 5%
Copilot
1 3%
Show all (19)
What AI and ML technologies does Callista use?
LLM is named in 8% of job postings at Callista, followed by Claude (3%).
Which engineering practices does Callista ask for?
Data Vault is named in 13% of job postings at Callista, followed by CI/CD (10%), ETL/ELT (10%), Incident Management (8%).
CI/CD
4 10%
Incident Management
3 8%
AI Agents
2 5%
Clean Architecture
2 5%
RAG
2 5%
Show all (17)
What does each Callista team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Data Science
12 postingsBackend
9 postingsDevOps
7 postingsAI/ML
3 postingsHow does your stack fit Callista?
How is the Callista 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 Callista stack?
Callista scores 80 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: 2; legacy ones: 0.
How common is the Callista stack in its industry?
Share of the 1,447 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Callista
Questions about the Callista tech stack
What programming languages does Callista use?
The languages named in Callista job postings are SQL (45%), Java (43%), TypeScript (33%), JavaScript (33%), Python (18%), as a share of the 40 postings of the last 12 months.
Does Callista use Angular?
Yes. Angular is named in 13 of 40 job postings (33%) and required in 13 of them.
What cloud and platforms does Callista use?
The cloud and platforms named in Callista job postings are Azure (20), Databricks (13), Kubernetes (10) (postings in brackets).
What skills do you need for a Data Science job at Callista?
Data Science postings at Callista most often require Databricks (10), Azure (9), SQL (9), Azure SQL Database (4), out of 12 postings in the last 12 months.
Is the Callista tech stack changing?
Yes. Linux, PostgreSQL, Kotlin, Incident Management first appeared in Callista job postings in the last six months.
How modern is the Callista tech stack?
Callista scores 80 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: 2; legacy ones: 0.
How does Alion know the Callista tech stack?
Alion reads every job posting Callista publishes and tags the technologies each one names. The figures on this page count the 40 postings of the last 12 months and were updated on Nov 13, 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, "Callista tech stack: 80 technologies from 40 job postings", as of Nov 13, 2026. https://alion.io/company/callista-3/technologies