C5i tech stack
C5i builds mostly with Python, Java, TypeScript, SQL. Its stack also includes Kubernetes, Azure, LangChain, PostgreSQL. Azure is named in 11 of the 24 job postings C5i published in the last 12 months (46%). Counted by Alion from the job postings of C5i, updated Nov 12, 2026.
What programming languages does C5i use?
Python is named in 42% of job postings at C5i, followed by Java (21%), TypeScript (21%), SQL (17%).
Python
10 42%
Java
5 21%
TypeScript
5 21%
SQL
4 17%
JavaScript
4 17%
PowerShell
2 8%
Bash
1 4%
C#
1 4%
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What frameworks and libraries does C5i use?
LangChain is named in 21% of job postings at C5i, followed by LangGraph (17%), Angular (13%), FastAPI (13%).
LangChain
5 21%
LangGraph
4 17%
Angular
3 13%
FastAPI
3 13%
React.js
3 13%
CrewAI
3 13%
Django
2 8%
Flask
2 8%
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What databases does C5i use?
PostgreSQL is named in 17% of job postings at C5i, followed by Amazon Redshift (8%), Google BigQuery (4%), GraphDB (4%).
What cloud and platforms does C5i use?
Kubernetes is named in 46% of job postings at C5i, followed by Azure (46%), AWS (25%), VMWare (21%).
Kubernetes
11 46%
Azure
11 46%
AWS
6 25%
VMWare
5 21%
GitLab
4 17%
GCP
3 13%
Databricks
2 8%
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What developer tools does C5i use?
Ansible is named in 17% of job postings at C5i, followed by Rest API (17%), Model Context Protocol (17%), Docker (13%).
Ansible
4 17%
Rest API
4 17%
Model Context Protocol
4 17%
Docker
3 13%
Proxmox VE
3 13%
Git
2 8%
GraphQL
2 8%
pySpark
2 8%
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Which engineering practices does C5i ask for?
CI/CD is named in 58% of job postings at C5i, followed by AI Agents (25%), RAG (21%), Multi-Agent Systems (17%).
CI/CD
14 58%
AI Agents
6 25%
RAG
5 21%
Prompt Engineering
4 17%
Configuration Management
3 13%
Function Calling
3 13%
Show all (20)
What does each C5i team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Solutions
7 postingsDevOps
7 postingsBackend
6 postingsHow does your stack fit C5i?
How modern is the C5i stack?
C5i 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: 1; legacy ones: 0.
How common is the C5i stack in its industry?
Share of the 526 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like C5i
Questions about the C5i tech stack
What programming languages does C5i use?
The languages named in C5i job postings are Python (42%), Java (21%), TypeScript (21%), SQL (17%), JavaScript (17%), as a share of the 24 postings of the last 12 months.
Does C5i use LangChain?
Yes. LangChain is named in 5 of 24 job postings (21%) and required in 2 of them.
What cloud and platforms does C5i use?
The cloud and platforms named in C5i job postings are Kubernetes (11), Azure (11), AWS (6) (postings in brackets).
What skills do you need for a Solutions job at C5i?
Solutions postings at C5i most often require Python (5), SQL (3), Azure (2), CrewAI (2), out of 7 postings in the last 12 months.
Is the C5i tech stack changing?
No new technology has appeared in C5i job postings in the last six months.
How modern is the C5i tech stack?
C5i 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: 1; legacy ones: 0.
How does Alion know the C5i tech stack?
Alion reads every job posting C5i publishes and tags the technologies each one names. The figures on this page count the 24 postings of the last 12 months and were updated on Nov 12, 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, "C5i tech stack: 85 technologies from 24 job postings", as of Nov 12, 2026. https://alion.io/company/c5i/technologies