Zeffy tech stack
Zeffy builds mostly with JavaScript, Node JS, TypeScript, SQL. Its stack also includes GitHub Actions, PostgreSQL, Nest.JS, Next.js. JavaScript is named in 2 of the 3 job postings Zeffy published in the last 12 months (67%). Counted by Alion from the job postings of Zeffy, updated Oct 16, 2026.
What programming languages does Zeffy use?
JavaScript is named in 67% of job postings at Zeffy, followed by Node JS (67%), TypeScript (67%), SQL (33%).
What frameworks and libraries does Zeffy use?
Nest.JS is named in 67% of job postings at Zeffy, followed by Next.js (67%), React.js (67%).
What databases does Zeffy use?
PostgreSQL is named in 67% of job postings at Zeffy.
PostgreSQL
2 67%
What cloud and platforms does Zeffy use?
GitHub Actions is named in 67% of job postings at Zeffy.
GitHub Actions
2 67%
What AI and ML technologies does Zeffy use?
Claude is named in 33% of job postings at Zeffy.
Claude
1 33%
Which engineering practices does Zeffy ask for?
CI/CD is named in 67% of job postings at Zeffy, followed by AI Agents (33%).
How does your stack fit Zeffy?
How modern is the Zeffy stack?
Zeffy 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: 1; legacy ones: 0.
How common is the Zeffy stack in its industry?
Share of the 1,264 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Zeffy
Questions about the Zeffy tech stack
What programming languages does Zeffy use?
The languages named in Zeffy job postings are JavaScript (67%), Node JS (67%), TypeScript (67%), SQL (33%), as a share of the 3 postings of the last 12 months.
What cloud and platforms does Zeffy use?
The cloud and platforms named in Zeffy job postings are GitHub Actions (2) (postings in brackets).
Is the Zeffy tech stack changing?
No new technology has appeared in Zeffy job postings in the last six months.
How modern is the Zeffy tech stack?
Zeffy 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: 1; legacy ones: 0.
How does Alion know the Zeffy tech stack?
Alion reads every job posting Zeffy publishes and tags the technologies each one names. The figures on this page count the 3 postings of the last 12 months and were updated on Oct 16, 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, "Zeffy tech stack: 12 technologies from 3 job postings", as of Oct 16, 2026. https://alion.io/company/zeffy/technologies