Kepler tech stack
Kepler builds mostly with Rust, TypeScript, JavaScript, Python. Its stack also includes OpenAI, AWS, PostgreSQL, React.js. LLM is named in 6 of the 6 job postings Kepler published in the last 12 months (100%). Counted by Alion from the job postings of Kepler, updated Oct 14, 2026.
What programming languages does Kepler use?
Rust is named in 83% of job postings at Kepler, followed by TypeScript (83%), JavaScript (83%), Python (17%).
What frameworks and libraries does Kepler use?
React.js is named in 83% of job postings at Kepler.
React.js
5 83%
What databases does Kepler use?
PostgreSQL is named in 83% of job postings at Kepler.
PostgreSQL
5 83%
What cloud and platforms does Kepler use?
OpenAI is named in 100% of job postings at Kepler, followed by AWS (83%).
What developer tools does Kepler use?
dbt is named in 100% of job postings at Kepler, followed by Claude Code (67%), Cursor (67%), Git (17%).
What AI and ML technologies does Kepler use?
LLM is named in 100% of job postings at Kepler, followed by Claude (83%).
Which engineering practices does Kepler ask for?
CI/CD is named in 100% of job postings at Kepler, followed by AI Agents (83%), ETL/ELT (17%), Fine-tuning (17%).
CI/CD
6 100%
AI Agents
5 83%
Fine-tuning
1 17%
Hallucination
1 17%
RAG
1 17%
How does your stack fit Kepler?
How modern is the Kepler stack?
Kepler scores 87 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 Kepler stack in its industry?
Share of the 34 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Kepler
Questions about the Kepler tech stack
What programming languages does Kepler use?
The languages named in Kepler job postings are Rust (83%), TypeScript (83%), JavaScript (83%), Python (17%), as a share of the 6 postings of the last 12 months.
Does Kepler use React.js?
Yes. React.js is named in 5 of 6 job postings (83%) and required in 2 of them.
What cloud and platforms does Kepler use?
The cloud and platforms named in Kepler job postings are OpenAI (6), AWS (5) (postings in brackets).
Is the Kepler tech stack changing?
No new technology has appeared in Kepler job postings in the last six months.
How modern is the Kepler tech stack?
Kepler scores 87 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 Kepler tech stack?
Alion reads every job posting Kepler 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 14, 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, "Kepler tech stack: 22 technologies from 6 job postings", as of Oct 14, 2026. https://alion.io/company/kepler-5/technologies