Keystone tech stack
Keystone builds mostly with Assembly, Python, Stata, SQL. Its stack also includes Tableau, MySQL, Snowflake, AWS. Assembly is named in 44 of the 44 job postings Keystone published in the last 12 months (100%). Counted by Alion from the job postings of Keystone, updated Sep 28, 2026.
What programming languages does Keystone use?
Assembly is named in 100% of job postings at Keystone, followed by Python (39%), Stata (16%), SQL (11%).
Stata 
C# 
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What frameworks and libraries does Keystone use?
Streamlit is named in 2% of job postings at Keystone.
Streamlit
1 2%
What databases does Keystone use?
MySQL is named in 5% of job postings at Keystone, followed by Snowflake (5%), BigQuery (2%), Google BigQuery (2%).
BigQuery 
What cloud and platforms does Keystone use?
Tableau is named in 5% of job postings at Keystone, followed by AWS (2%), Azure (2%), GCP (2%).
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What developer tools does Keystone use?
Microsoft Excel is named in 11% of job postings at Keystone, followed by dbt (5%), Adobe Photoshop (2%), CloudFormation (2%).
What AI and ML technologies does Keystone use?
LLM is named in 9% of job postings at Keystone.
LLM
4 9%
Which engineering practices does Keystone ask for?
Machine Learning is named in 11% of job postings at Keystone, followed by Agentic Workflows (7%), RAG (7%), AI Agents (7%).
RAG
3 7%
AI Agents
3 7%
CI/CD
2 5%
Incident Management
1 2%
Show all (14)
What does each Keystone team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Legal
15 postingsHow does your stack fit Keystone?
How much does Keystone pay by technology?
Median stated pay of the postings that name each technology, against the median of all Keystone postings with stated pay: $194k across 42 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Assembly | 42 | $194k | 0% |
| Python | 16 | $192k | −1% |
| Stata | 6 | $187k | −4% |
| SQL | 5 | $186k | −4% |
How is the Keystone 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 Keystone stack?
Keystone 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: 1; legacy ones: 0.
How common is the Keystone stack in its industry?
Share of the 357 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Keystone apart
Keystone products in its job postings
Postings at Keystone name its own products. They describe what the company makes, so they are left out of the stack above.
Companies with a stack like Keystone
Questions about the Keystone tech stack
What programming languages does Keystone use?
The languages named in Keystone job postings are Assembly (100%), Python (39%), Stata (16%), SQL (11%), C# (5%), as a share of the 44 postings of the last 12 months.
Does Keystone use Tableau?
Yes. Tableau is named in 2 of 44 job postings (5%) and required in 1 of them.
What cloud and platforms does Keystone use?
The cloud and platforms named in Keystone job postings are Tableau (2), AWS (1), Azure (1) (postings in brackets).
What skills do you need for a Legal job at Keystone?
Legal postings at Keystone most often require Python (7), Stata (5), LLM (3), Assembly (2), out of 15 postings in the last 12 months.
Is the Keystone tech stack changing?
Yes. Microsoft Excel, AI Agents, Human-in-the-Loop, Agentic Workflows first appeared in Keystone job postings in the last six months.
How modern is the Keystone tech stack?
Keystone 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: 1; legacy ones: 0.
How does Alion know the Keystone tech stack?
Alion reads every job posting Keystone publishes and tags the technologies each one names. The figures on this page count the 44 postings of the last 12 months and were updated on Sep 28, 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, "Keystone tech stack: 48 technologies from 44 job postings", as of Sep 28, 2026. https://alion.io/company/keystone/technologies