ELLIS tech stack
ELLIS builds mostly with Python, PHP, C++, Java. Its stack also includes GitLab, Linux, PyTorch, Flax. Python is named in 16 of the 35 job postings ELLIS published in the last 12 months (46%). Counted by Alion from the job postings of ELLIS, updated Oct 25, 2026.
What programming languages does ELLIS use?
Python is named in 46% of job postings at ELLIS, followed by PHP (23%), C++ (11%), Java (6%).
C++ 
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What frameworks and libraries does ELLIS use?
PyTorch is named in 6% of job postings at ELLIS, followed by Flax (3%), Laravel (3%), OpenCV (3%).
Flax 
What cloud and platforms does ELLIS use?
GitLab is named in 6% of job postings at ELLIS, followed by Linux (6%), Windows (3%).
What developer tools does ELLIS use?
Git is named in 6% of job postings at ELLIS, followed by Canva (3%), Docker (3%), Model Context Protocol (3%).
What AI and ML technologies does ELLIS use?
Claude is named in 6% of job postings at ELLIS, followed by LLM (3%).
Which engineering practices does ELLIS ask for?
Machine Learning is named in 11% of job postings at ELLIS, followed by CI/CD (6%), ETL/ELT (6%), EU AI Act (6%).
CI/CD
2 6%
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What does each ELLIS team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Science & Research
12 postingsIndustrial Engineering
6 postingsHow does your stack fit ELLIS?
How much does ELLIS pay by technology?
Median stated pay of the postings that name each technology, against the median of all ELLIS postings with stated pay: $40k across 15 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 7 | $40k | 0% |
| PHP | 5 | $41k | +2% |
How modern is the ELLIS stack?
ELLIS scores 76 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 ELLIS stack in its industry?
Share of the 1,127 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like ELLIS
University of British Columbia
29 shared technologies
AUMOVIO
30 shared technologies
Texas A&M University System
29 shared technologies
Argonne National Laboratory
26 shared technologies
University of Maryland
32 shared technologies
Siemens Healthineers Cancer Care
29 shared technologies
AIG
26 shared technologies
Air Liquide
26 shared technologies
Questions about the ELLIS tech stack
What programming languages does ELLIS use?
The languages named in ELLIS job postings are Python (46%), PHP (23%), C++ (11%), Java (6%), MATLAB (6%), as a share of the 35 postings of the last 12 months.
Does ELLIS use PyTorch?
Yes. PyTorch is named in 2 of 35 job postings (6%) and required in 2 of them.
What cloud and platforms does ELLIS use?
The cloud and platforms named in ELLIS job postings are GitLab (2), Linux (2), Windows (1) (postings in brackets).
What skills do you need for a Science & Research job at ELLIS?
Science & Research postings at ELLIS most often require Python (7), C++ (2), out of 12 postings in the last 12 months.
Is the ELLIS tech stack changing?
No new technology has appeared in ELLIS job postings in the last six months.
How modern is the ELLIS tech stack?
ELLIS scores 76 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 ELLIS tech stack?
Alion reads every job posting ELLIS publishes and tags the technologies each one names. The figures on this page count the 35 postings of the last 12 months and were updated on Oct 25, 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, "ELLIS tech stack: 44 technologies from 35 job postings", as of Oct 25, 2026. https://alion.io/company/ellis-2/technologies