EXFO tech stack
EXFO builds mostly with Python, C#, JavaScript, C++. Its stack also includes Linux, Windows, Snowflake, Cypress. Linux is named in 6 of the 19 job postings EXFO published in the last 12 months (32%). Counted by Alion from the job postings of EXFO, updated Oct 8, 2026.
What programming languages does EXFO use?
Python is named in 26% of job postings at EXFO, followed by C# (16%), JavaScript (16%), C++ (11%).
C# 
C++ 
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What frameworks and libraries does EXFO use?
Cypress is named in 11% of job postings at EXFO, followed by Playwright (11%), Rest-Assured (11%), Selenium (11%).
Cypress
2 11%
Playwright
2 11%
Rest-Assured
2 11%
Selenium
2 11%
Transformers
2 11%
Flutter
1 5%
Streamlit
1 5%
Fiber
1 5%
What cloud and platforms does EXFO use?
Linux is named in 32% of job postings at EXFO, followed by Windows (21%), GitLab (16%), AWS (11%).
GitLab
3 16%
AWS
2 11%
GitLab CI
2 11%
Kubernetes
2 11%
Postman
2 11%
Power BI
2 11%
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What developer tools does EXFO use?
Git is named in 32% of job postings at EXFO, followed by Rest API (26%), Docker (16%), Cursor (11%).
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Which engineering practices does EXFO ask for?
CI/CD is named in 26% of job postings at EXFO, followed by ETL/ELT (5%), IAM (5%), Pipeline as Code (5%).
What does each EXFO team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
4 postingsHow does your stack fit EXFO?
How modern is the EXFO stack?
EXFO scores 73 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 EXFO stack in its industry?
Share of the 134 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like EXFO
Questions about the EXFO tech stack
What programming languages does EXFO use?
The languages named in EXFO job postings are Python (26%), C# (16%), JavaScript (16%), C++ (11%), Go (11%), as a share of the 19 postings of the last 12 months.
Does EXFO use Cypress?
Yes. Cypress is named in 2 of 19 job postings (11%) and required in 2 of them.
What cloud and platforms does EXFO use?
The cloud and platforms named in EXFO job postings are Linux (6), Windows (4), GitLab (3) (postings in brackets).
What skills do you need for a Backend job at EXFO?
Backend postings at EXFO most often require Git (3), C# (2), Cursor (2), Docker (2), out of 4 postings in the last 12 months.
Is the EXFO tech stack changing?
No new technology has appeared in EXFO job postings in the last six months.
How modern is the EXFO tech stack?
EXFO scores 73 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 EXFO tech stack?
Alion reads every job posting EXFO publishes and tags the technologies each one names. The figures on this page count the 19 postings of the last 12 months and were updated on Oct 8, 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, "EXFO tech stack: 55 technologies from 19 job postings", as of Oct 8, 2026. https://alion.io/company/exfo/technologies