Ontra tech stack
Ontra builds mostly with Python, Java, SQL, JavaScript. Its stack also includes AWS, Amazon SageMaker, OpenSearch, Flask. LLM is named in 5 of the 6 job postings Ontra published in the last 12 months (83%). Counted by Alion from the job postings of Ontra, updated Oct 31, 2026.
What programming languages does Ontra use?
Python is named in 50% of job postings at Ontra, followed by Java (17%), SQL (17%), JavaScript (17%).
What frameworks and libraries does Ontra use?
Flask is named in 17% of job postings at Ontra, followed by OpenTelemetry (17%), React.js (17%), Ruby on Rails (17%).
What databases does Ontra use?
OpenSearch is named in 17% of job postings at Ontra.
OpenSearch
1 17%
What cloud and platforms does Ontra use?
AWS is named in 17% of job postings at Ontra, followed by Amazon SageMaker (17%), Arize Phoenix (17%), Datadog (17%).
What developer tools does Ontra use?
Claude Code is named in 33% of job postings at Ontra, followed by OpenAI Codex (33%), Model Context Protocol (17%).
What AI and ML technologies does Ontra use?
LLM is named in 83% of job postings at Ontra, followed by Claude (33%).
Which engineering practices does Ontra ask for?
RAG is named in 33% of job postings at Ontra, followed by AI Agents (17%), CI/CD (17%), Function Calling (17%).
How does your stack fit Ontra?
How modern is the Ontra stack?
Ontra scores 89 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: 0.
How common is the Ontra stack in its industry?
Share of the 320 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Ontra
Questions about the Ontra tech stack
What programming languages does Ontra use?
The languages named in Ontra job postings are Python (50%), Java (17%), SQL (17%), JavaScript (17%), Ruby (17%), as a share of the 6 postings of the last 12 months.
What cloud and platforms does Ontra use?
The cloud and platforms named in Ontra job postings are AWS (1), Amazon SageMaker (1), Arize Phoenix (1) (postings in brackets).
Is the Ontra tech stack changing?
No new technology has appeared in Ontra job postings in the last six months.
How modern is the Ontra tech stack?
Ontra scores 89 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: 0.
How does Alion know the Ontra tech stack?
Alion reads every job posting Ontra publishes and tags the technologies each one names. The figures on this page count the 6 postings of the last 12 months and were updated on Oct 31, 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, "Ontra tech stack: 25 technologies from 6 job postings", as of Oct 31, 2026. https://alion.io/company/ontra-ai/technologies