Free Pro tech stack
Free Pro builds mostly with Python, SQL, JavaScript, PHP. Its stack also includes Linux, Apache Kafka, PostgreSQL, API Platform. Linux is named in 7 of the 8 job postings Free Pro published in the last 12 months (88%). Counted by Alion from the job postings of Free Pro, updated Oct 11, 2026.
What programming languages does Free Pro use?
Python is named in 63% of job postings at Free Pro, followed by SQL (50%), JavaScript (25%), PHP (25%).
What frameworks and libraries does Free Pro use?
API Platform is named in 25% of job postings at Free Pro, followed by FastAPI (25%), Angular (13%), Nest.JS (13%).
API Platform
2 25%
FastAPI
2 25%
Angular
1 13%
Nest.JS
1 13%
NumPy
1 13%
Nuxt.js
1 13%
React.js
1 13%
Supervision
1 13%
Show all (9)
What databases does Free Pro use?
PostgreSQL is named in 25% of job postings at Free Pro, followed by MySQL (13%).
PostgreSQL
2 25%
MySQL
1 13%
What cloud and platforms does Free Pro use?
Linux is named in 88% of job postings at Free Pro, followed by Apache Kafka (38%), Debian (38%), CentOS Stream (13%).
Apache Kafka
3 38%
Debian
3 38%
CentOS Stream
1 13%
Kubernetes
1 13%
Red Hat
1 13%
Spark
1 13%
Show all (12)
What developer tools does Free Pro use?
Ansible is named in 13% of job postings at Free Pro, followed by Apache HTTP Server (13%), Docker (13%), Git (13%).
Ansible
1 13%
Docker
1 13%
Git
1 13%
PHP-FPM
1 13%
TensorRT
1 13%
Terraform
1 13%
WebSockets
1 13%
Show all (9)
Which engineering practices does Free Pro ask for?
BGP is named in 38% of job postings at Free Pro, followed by MPLS (38%), OSPF (25%), TCP/IP (25%).
Show all (9)
What does each Free Pro team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
3 postingsHow does your stack fit Free Pro?
How much does Free Pro pay by technology?
Median stated pay of the postings that name each technology, against the median of all Free Pro postings with stated pay: $59k across 8 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Linux | 7 | $56k | −5% |
| Python | 5 | $62k | +5% |
How modern is the Free Pro stack?
Free Pro scores 66 out of 100 (Modern). 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 Free Pro stack in its industry?
Share of the 534 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Free Pro
Questions about the Free Pro tech stack
What programming languages does Free Pro use?
The languages named in Free Pro job postings are Python (63%), SQL (50%), JavaScript (25%), PHP (25%), TypeScript (25%), as a share of the 8 postings of the last 12 months.
Does Free Pro use API Platform?
Yes. API Platform is named in 2 of 8 job postings (25%) and required in 2 of them.
What cloud and platforms does Free Pro use?
The cloud and platforms named in Free Pro job postings are Linux (7), Apache Kafka (3), Debian (3) (postings in brackets).
What skills do you need for a Backend job at Free Pro?
Backend postings at Free Pro most often require Apache Kafka (3), Python (3), SQL (3), API Platform (2), out of 3 postings in the last 12 months.
Is the Free Pro tech stack changing?
No new technology has appeared in Free Pro job postings in the last six months.
How modern is the Free Pro tech stack?
Free Pro scores 66 out of 100 (Modern). 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 Free Pro tech stack?
Alion reads every job posting Free Pro 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 11, 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, "Free Pro tech stack: 48 technologies from 8 job postings", as of Oct 11, 2026. https://alion.io/company/freepro-com/technologies