Fin tech stack
Fin builds mostly with Python, SQL, JavaScript, Node JS. Its stack also includes Expo, AWS, React Native, React.js. Python is named in 7 of the 12 job postings Fin published in the last 12 months (58%). Counted by Alion from the job postings of Fin, updated Sep 29, 2026.
What programming languages does Fin use?
Python is named in 58% of job postings at Fin, followed by SQL (58%), JavaScript (25%), Node JS (17%).
What frameworks and libraries does Fin use?
React Native is named in 17% of job postings at Fin, followed by React.js (17%), Temporal (8%).
What cloud and platforms does Fin use?
Expo is named in 17% of job postings at Fin, followed by AWS (17%), Figma (8%), GCP (8%).
What developer tools does Fin use?
Adobe Illustrator is named in 8% of job postings at Fin, followed by Terraform (8%).
Adobe Illustrator
1 8%
Terraform
1 8%
Which engineering practices does Fin ask for?
Smart Contracts is named in 58% of job postings at Fin, followed by DeFi (50%), AI Agents (8%), Machine Learning (8%).
How does your stack fit Fin?
How is the Fin 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 Fin stack?
Fin scores 82 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: 0; legacy ones: 0.
How common is the Fin stack in its industry?
Share of the 396 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Fin
Questions about the Fin tech stack
What programming languages does Fin use?
The languages named in Fin job postings are Python (58%), SQL (58%), JavaScript (25%), Node JS (17%), Rust (17%), as a share of the 12 postings of the last 12 months.
Does Fin use React Native?
Yes. React Native is named in 2 of 12 job postings (17%) and required in 2 of them.
What cloud and platforms does Fin use?
The cloud and platforms named in Fin job postings are Expo (2), AWS (2), Figma (1) (postings in brackets).
Is the Fin tech stack changing?
No new technology has appeared in Fin job postings in the last six months.
How modern is the Fin tech stack?
Fin scores 82 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: 0; legacy ones: 0.
How does Alion know the Fin tech stack?
Alion reads every job posting Fin publishes and tags the technologies each one names. The figures on this page count the 12 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, "Fin tech stack: 22 technologies from 12 job postings", as of Sep 29, 2026. https://alion.io/company/fin/technologies