Citco tech stack
Citco builds mostly with Python, SQL, JavaScript, Node JS. Its stack also includes AWS, AWS Lambda, React.js, PostgreSQL. AWS is named in 32 of the 123 job postings Citco published in the last 12 months (26%). Counted by Alion from the job postings of Citco, updated Sep 26, 2026.
What programming languages does Citco use?
Python is named in 21% of job postings at Citco, followed by SQL (21%), JavaScript (10%), Node JS (5%).
Python
26 21%
SQL
26 21%
JavaScript
12 10%
Node JS
6 5%
TypeScript
6 5%
COBOL
4 3%
Visual Basic
3 2%
Bash
2 2%
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What frameworks and libraries does Citco use?
React.js is named in 7% of job postings at Citco, followed by LangChain (2%), TensorFlow (2%), AWS Strands Agents (2%).
React.js
8 7%
LangChain
3 2%
TensorFlow
3 2%
LlamaIndex
2 2%
PyTorch
2 2%
Scikit-learn
2 2%
Nest.JS
2 2%
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What databases does Citco use?
PostgreSQL is named in 5% of job postings at Citco, followed by Delta Lake (3%), MS SQL (3%), Oracle (2%).
What cloud and platforms does Citco use?
AWS is named in 26% of job postings at Citco, followed by AWS Lambda (11%), Amazon S3 (11%), Azure (9%).
AWS
32 26%
AWS Lambda
14 11%
Azure
11 9%
Power BI
11 9%
Databricks
11 9%
GCP
7 6%
Spark
7 6%
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What developer tools does Citco use?
Microsoft Excel is named in 36% of job postings at Citco, followed by Terraform (5%), Git (5%), Jenkins (4%).
Terraform
6 5%
Git
6 5%
Jenkins
5 4%
Rest API
5 4%
pySpark
5 4%
Copilot
4 3%
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What AI and ML technologies does Citco use?
LLM is named in 2% of job postings at Citco, followed by Claude (1%).
Which engineering practices does Citco ask for?
SLI/SLO/SLA is named in 18% of job postings at Citco, followed by ETL/ELT (11%), CI/CD (11%), IAM (8%).
SLI/SLO/SLA
22 18%
CI/CD
14 11%
AI Agents
8 7%
RAG
6 5%
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What does each Citco team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Leadership
11 postingsAnalytics
8 postingsBackend
8 postingsAI/ML
6 postingsHow does your stack fit Citco?
How is the Citco 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 Citco stack?
Citco scores 77 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: 1.
How common is the Citco stack in its industry?
Share of the 57 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Citco apart
Companies with a stack like Citco
Questions about the Citco tech stack
What programming languages does Citco use?
The languages named in Citco job postings are Python (21%), SQL (21%), JavaScript (10%), Node JS (5%), TypeScript (5%), as a share of the 123 postings of the last 12 months.
Does Citco use React.js?
Yes. React.js is named in 8 of 123 job postings (7%) and required in 8 of them.
What cloud and platforms does Citco use?
The cloud and platforms named in Citco job postings are AWS (32), AWS Lambda (14), Amazon S3 (14) (postings in brackets).
What skills do you need for a Leadership job at Citco?
Leadership postings at Citco most often require AWS (9), Python (5), SQL (4), Databricks (3), out of 11 postings in the last 12 months.
Is the Citco tech stack changing?
Yes. Anthropic, Fine-tuning, LlamaIndex, OpenAI first appeared in Citco job postings in the last six months.
How modern is the Citco tech stack?
Citco scores 77 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: 1.
How does Alion know the Citco tech stack?
Alion reads every job posting Citco publishes and tags the technologies each one names. The figures on this page count the 123 postings of the last 12 months and were updated on Sep 26, 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, "Citco tech stack: 142 technologies from 123 job postings", as of Sep 26, 2026. https://alion.io/company/citco/technologies