Aon tech stack
Aon builds mostly with SQL, Python, C#, JavaScript. Its stack also includes Azure, Databricks, Delta Lake, MySQL. SQL is named in 16 of the 19 job postings Aon published in the last 12 months (84%). Counted by Alion from the job postings of Aon, updated Nov 13, 2026.
What programming languages does Aon use?
SQL is named in 84% of job postings at Aon, followed by Python (63%), C# (42%), JavaScript (26%).
SQL
16 84%
Python
12 63%
C#
8 42%
JavaScript
5 26%
TypeScript
3 16%
Java
1 5%
MATLAB
1 5%
Node JS
1 5%
Show all (11)
What frameworks and libraries does Aon use?
React.js is named in 11% of job postings at Aon, followed by Cypress (5%), Playwright (5%), Rest-Assured (5%).
React.js
2 11%
Cypress
1 5%
Playwright
1 5%
Rest-Assured
1 5%
Selenium
1 5%
WebDriverIO
1 5%
ASP.NET Core
1 5%
Angular
1 5%
Show all (10)
What databases does Aon use?
Delta Lake is named in 11% of job postings at Aon, followed by MySQL (11%), Snowflake (11%), Azure SQL Database (5%).
Delta Lake
2 11%
MySQL
2 11%
Snowflake
2 11%
Azure SQL Database
1 5%
MS SQL
1 5%
Redis
1 5%
Oracle
1 5%
What cloud and platforms does Aon use?
Azure is named in 63% of job postings at Aon, followed by Databricks (37%), Power BI (32%), Azure DevOps (26%).
Azure
12 63%
Databricks
7 37%
Power BI
6 32%
Azure DevOps
5 26%
.NET
4 21%
Tableau
4 21%
AWS
4 21%
GCP
3 16%
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What developer tools does Aon use?
Alteryx is named in 11% of job postings at Aon, followed by Git (11%), Jenkins (11%), Terraform (11%).
Git
2 11%
Jenkins
2 11%
Terraform
2 11%
Rest API
2 11%
Copilot
2 11%
Cursor
2 11%
Ansible
1 5%
Show all (19)
What AI and ML technologies does Aon use?
Claude is named in 11% of job postings at Aon, followed by Gemini (5%), LLM (5%).
Which engineering practices does Aon ask for?
CI/CD is named in 37% of job postings at Aon, followed by Machine Learning (32%), ETL/ELT (21%), Feature Store (11%).
CI/CD
7 37%
Fine-tuning
1 5%
Incident Management
1 5%
RAG
1 5%
Show all (15)
What does each Aon team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Data Science
5 postingsBackend
3 postingsHow does your stack fit Aon?
How modern is the Aon stack?
Aon scores 86 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: 3; legacy ones: 0.
How common is the Aon stack in its industry?
Share of the 2,568 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Aon
Questions about the Aon tech stack
What programming languages does Aon use?
The languages named in Aon job postings are SQL (84%), Python (63%), C# (42%), JavaScript (26%), TypeScript (16%), as a share of the 19 postings of the last 12 months.
Does Aon use React.js?
Yes. React.js is named in 2 of 19 job postings (11%) and required in 2 of them.
What cloud and platforms does Aon use?
The cloud and platforms named in Aon job postings are Azure (12), Databricks (7), Power BI (6) (postings in brackets).
What skills do you need for a Data Science job at Aon?
Data Science postings at Aon most often require Databricks (4), SQL (4), Azure (3), Power BI (3), out of 5 postings in the last 12 months.
Is the Aon tech stack changing?
No new technology has appeared in Aon job postings in the last six months.
How modern is the Aon tech stack?
Aon scores 86 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: 3; legacy ones: 0.
How does Alion know the Aon tech stack?
Alion reads every job posting Aon publishes and tags the technologies each one names. The figures on this page count the 19 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, "Aon tech stack: 86 technologies from 19 job postings", as of Nov 13, 2026. https://alion.io/company/aon/technologies