OpenFn tech stack
OpenFn builds mostly with Node JS, JavaScript, Elixir, Apex. Its stack also includes Apache Kafka, GitHub, Apache Camel. Node JS is named in 2 of the 8 job postings OpenFn published in the last 12 months (25%). Counted by Alion from the job postings of OpenFn, updated Oct 14, 2026.
What programming languages does OpenFn use?
Node JS is named in 25% of job postings at OpenFn, followed by JavaScript (25%), Elixir (13%), Apex (13%).
What frameworks and libraries does OpenFn use?
Apache Camel is named in 13% of job postings at OpenFn.
Apache Camel
1 13%
What cloud and platforms does OpenFn use?
Apache Kafka is named in 13% of job postings at OpenFn, followed by GitHub (13%), Kubernetes (13%), MuleSoft (13%).
What developer tools does OpenFn use?
Docker is named in 13% of job postings at OpenFn, followed by Kong (13%).
What AI and ML technologies does OpenFn use?
Claude is named in 13% of job postings at OpenFn, followed by LLM (13%).
Which engineering practices does OpenFn ask for?
AI Agents is named in 38% of job postings at OpenFn, followed by SLI/SLO/SLA (38%), CI/CD (13%).
How does your stack fit OpenFn?
How is the OpenFn 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 OpenFn stack?
OpenFn scores 84 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 OpenFn stack in its industry?
Share of the 345 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like OpenFn
TeamSystem
14 shared technologies
AU SMALL FINANCE BANK Limited
14 shared technologies
Sage IT
15 shared technologies
Solita
14 shared technologies
Bentley Systems
15 shared technologies
Statista
14 shared technologies
Precisely
14 shared technologies
Toshiba Global Commerce Solutions
15 shared technologies
Questions about the OpenFn tech stack
What programming languages does OpenFn use?
The languages named in OpenFn job postings are Node JS (25%), JavaScript (25%), Elixir (13%), Apex (13%), Java (13%), as a share of the 8 postings of the last 12 months.
What cloud and platforms does OpenFn use?
The cloud and platforms named in OpenFn job postings are Apache Kafka (1), GitHub (1), Kubernetes (1) (postings in brackets).
Is the OpenFn tech stack changing?
Yes. SLI/SLO/SLA, AI Agents first appeared in OpenFn job postings in the last six months.
How modern is the OpenFn tech stack?
OpenFn scores 84 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 OpenFn tech stack?
Alion reads every job posting OpenFn publishes and tags the technologies each one names. The figures on this page count the 8 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, "OpenFn tech stack: 17 technologies from 8 job postings", as of Oct 14, 2026. https://alion.io/company/openfn/technologies