Siena AI tech stack
Siena AI builds mostly with Node JS, TypeScript, JavaScript, Python. Its stack also includes Perplexity, React.js, AWS, PostgreSQL. ChatGPT is named in 19 of the 19 job postings Siena AI published in the last 12 months (100%). Counted by Alion from the job postings of Siena AI, updated Sep 29, 2026.
What programming languages does Siena AI use?
Node JS is named in 16% of job postings at Siena AI, followed by TypeScript (16%), JavaScript (16%), Python (11%).
What frameworks and libraries does Siena AI use?
React.js is named in 16% of job postings at Siena AI, followed by Next.js (11%).
What databases does Siena AI use?
PostgreSQL is named in 11% of job postings at Siena AI, followed by Redis (11%).
PostgreSQL
2 11%
Redis
2 11%
What cloud and platforms does Siena AI use?
Perplexity is named in 100% of job postings at Siena AI, followed by AWS (11%), AWS Fargate (11%), AWS Lambda (11%).
Perplexity
19 100%
AWS
2 11%
AWS Fargate
2 11%
AWS Lambda
2 11%
Amazon EC2
2 11%
GitHub Actions
2 11%
GitHub
1 5%
Postman
1 5%
Show all (12)
What developer tools does Siena AI use?
Cursor is named in 100% of job postings at Siena AI, followed by Lovable (100%), Terraform (11%), Claude Code (5%).
What AI and ML technologies does Siena AI use?
Claude is named in 100% of job postings at Siena AI, followed by ChatGPT (100%), LLM (26%), Midjourney (5%).
Which engineering practices does Siena AI ask for?
AI Agents is named in 95% of job postings at Siena AI, followed by CI/CD (11%), A/B Testing (5%), Prompt Engineering (5%).
What does each Siena AI team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Solutions
4 postingsBackend
3 postingsHow does your stack fit Siena AI?
How is the Siena AI 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 Siena AI stack?
Siena AI scores 90 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: 4; legacy ones: 0.
How common is the Siena AI stack in its industry?
Share of the 3,798 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Siena AI apart
Companies with a stack like Siena AI
Questions about the Siena AI tech stack
What programming languages does Siena AI use?
The languages named in Siena AI job postings are Node JS (16%), TypeScript (16%), JavaScript (16%), Python (11%), as a share of the 19 postings of the last 12 months.
Does Siena AI use React.js?
Yes. React.js is named in 3 of 19 job postings (16%) and required in 3 of them.
What cloud and platforms does Siena AI use?
The cloud and platforms named in Siena AI job postings are Perplexity (19), AWS (2), AWS Fargate (2) (postings in brackets).
What skills do you need for a Solutions job at Siena AI?
Solutions postings at Siena AI most often require ChatGPT (2), Claude (2), Cursor (2), Lovable (2), out of 4 postings in the last 12 months.
Is the Siena AI tech stack changing?
Yes. Node JS, React.js, TypeScript, JavaScript first appeared in Siena AI job postings in the last six months.
How modern is the Siena AI tech stack?
Siena AI scores 90 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: 4; legacy ones: 0.
How does Alion know the Siena AI tech stack?
Alion reads every job posting Siena AI 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 Sep 29, 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, "Siena AI tech stack: 33 technologies from 19 job postings", as of Sep 29, 2026. https://alion.io/company/siena-ai/technologies