540 tech stack
540 builds mostly with Python, SQL, Java, C#. Its stack also includes AWS, Azure, Delta Lake, BigQuery. AWS is named in 22 of the 26 job postings 540 published in the last 12 months (85%). Counted by Alion from the job postings of 540, updated Oct 16, 2026.
What programming languages does 540 use?
Python is named in 62% of job postings at 540, followed by SQL (31%), Java (15%), C# (8%).
What frameworks and libraries does 540 use?
Feast is named in 8% of job postings at 540, followed by Ray (8%), Pytest (4%), Dagster (4%).
What databases does 540 use?
Delta Lake is named in 8% of job postings at 540, followed by BigQuery (8%), Google BigQuery (8%).
BigQuery 
What cloud and platforms does 540 use?
AWS is named in 85% of job postings at 540, followed by Azure (65%), Databricks (50%), Spark (50%).
AWS
22 85%
Azure
17 65%
Databricks
13 50%
Spark
13 50%
GCP
11 42%
Kubernetes
7 27%
GitLab
6 23%
Show all (31)
What developer tools does 540 use?
Git is named in 42% of job postings at 540, followed by Docker (27%), Terraform (23%), Argo Workflows (12%).
Git
11 42%
Docker
7 27%
Terraform
6 23%
Argo Workflows
3 12%
Rest API
2 8%
Swagger
2 8%
pySpark
2 8%
CloudFormation
2 8%
Show all (14)
Which engineering practices does 540 ask for?
CI/CD is named in 62% of job postings at 540, followed by ETL/ELT (35%), Machine Learning (31%), Platform Engineering (23%).
CI/CD
16 62%
Platform Engineering
6 23%
Time Series Forecasting
6 23%
RAG
5 19%
Show all (16)
What does each 540 team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Data Science
7 postingsSolutions
7 postingsDevOps
3 postingsAI/ML
3 postingsProduct
3 postingsHow does your stack fit 540?
How is the 540 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 540 stack?
540 scores 74 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: 1; legacy ones: 0.
How common is the 540 stack in its industry?
Share of the 5,634 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like 540
Questions about the 540 tech stack
What programming languages does 540 use?
The languages named in 540 job postings are Python (62%), SQL (31%), Java (15%), C# (8%), Kotlin (8%), as a share of the 26 postings of the last 12 months.
Does 540 use AWS?
Yes. AWS is named in 22 of 26 job postings (85%) and required in 18 of them.
What cloud and platforms does 540 use?
The cloud and platforms named in 540 job postings are AWS (22), Azure (17), Databricks (13) (postings in brackets).
What skills do you need for a Data Science job at 540?
Data Science postings at 540 most often require Python (7), Databricks (6), SQL (6), Spark (6), out of 7 postings in the last 12 months.
Is the 540 tech stack changing?
Yes. LLM Guardrails, Rest API, AI Agents, Tableau first appeared in 540 job postings in the last six months.
How modern is the 540 tech stack?
540 scores 74 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: 1; legacy ones: 0.
How does Alion know the 540 tech stack?
Alion reads every job posting 540 publishes and tags the technologies each one names. The figures on this page count the 26 postings of the last 12 months and were updated on Oct 16, 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, "540 tech stack: 77 technologies from 26 job postings", as of Oct 16, 2026. https://alion.io/company/540-co/technologies