SI& tech stack
SI& builds mostly with JavaScript, Python, Apex, C#. Its stack also includes AWS, Azure, PyTorch, TensorFlow. AWS is named in 14 of the 19 job postings SI& published in the last 12 months (74%). Counted by Alion from the job postings of SI&, updated Oct 16, 2026.
What programming languages does SI& use?
JavaScript is named in 32% of job postings at SI&, followed by Python (26%), Apex (26%), C# (11%).
C# 
Show all (12)
What frameworks and libraries does SI& use?
PyTorch is named in 26% of job postings at SI&, followed by TensorFlow (26%), React.js (21%), Vue.js (21%).
What databases does SI& use?
PostgreSQL is named in 16% of job postings at SI&, followed by MySQL (11%), Snowflake (11%), Amazon Redshift (5%).
PostgreSQL
3 16%
MySQL
2 11%
Snowflake
2 11%
Amazon Redshift
1 5%
BigQuery
1 5%
Google BigQuery
1 5%
What cloud and platforms does SI& use?
AWS is named in 74% of job postings at SI&, followed by Azure (68%), GCP (47%), Agentforce (26%).
AWS
14 74%
Azure
13 68%
GCP
9 47%
Databricks
4 21%
Show all (24)
What developer tools does SI& use?
Informatica is named in 26% of job postings at SI&, followed by Docker (21%), Jenkins (16%), CloudFormation (11%).
What AI and ML technologies does SI& use?
Gemini is named in 26% of job postings at SI&.
Gemini
5 26%
Which engineering practices does SI& ask for?
AI Agents is named in 26% of job postings at SI&, followed by CI/CD (16%).
What does each SI& team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
4 postingsDevOps
4 postingsData Science
3 postingsHow does your stack fit SI&?
How much does SI& pay by technology?
Median stated pay of the postings that name each technology, against the median of all SI& postings with stated pay: $76k across 18 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| AWS | 13 | $76k | 0% |
| Azure | 12 | $76k | 0% |
| GCP | 8 | $80k | +4% |
| JavaScript | 6 | $73k | −4% |
| Agentforce | 5 | $76k | 0% |
| Apex | 5 | $76k | 0% |
| Gemini | 5 | $76k | 0% |
| MuleSoft | 5 | $76k | 0% |
| OpenAI | 5 | $76k | 0% |
| PyTorch | 5 | $76k | 0% |
How modern is the SI& stack?
SI& 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: 1; legacy ones: 0.
Companies with a stack like SI&
Questions about the SI& tech stack
What programming languages does SI& use?
The languages named in SI& job postings are JavaScript (32%), Python (26%), Apex (26%), C# (11%), PHP (11%), as a share of the 19 postings of the last 12 months.
Does SI& use PyTorch?
Yes. PyTorch is named in 5 of 19 job postings (26%) and required in 5 of them.
What cloud and platforms does SI& use?
The cloud and platforms named in SI& job postings are AWS (14), Azure (13), GCP (9) (postings in brackets).
What skills do you need for a Backend job at SI&?
Backend postings at SI& most often require AWS (4), JavaScript (4), React.js (4), Vue.js (4), out of 4 postings in the last 12 months.
Is the SI& tech stack changing?
No new technology has appeared in SI& job postings in the last six months.
How modern is the SI& tech stack?
SI& 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: 1; legacy ones: 0.
How does Alion know the SI& tech stack?
Alion reads every job posting SI& 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 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, "SI& tech stack: 57 technologies from 19 job postings", as of Oct 16, 2026. https://alion.io/company/siac-co-jp/technologies