Si tech stack
Si builds mostly with JavaScript, Python. Its stack also includes AWS, Databricks, Snowflake. AWS is named in 2 of the 3 job postings Si published in the last 12 months (67%). Counted by Alion from the job postings of Si, updated Nov 3, 2026.
What programming languages does Si use?
JavaScript is named in 33% of job postings at Si, followed by Python (33%).
JavaScript
1 33%
Python
1 33%
What cloud and platforms does Si use?
AWS is named in 67% of job postings at Si, followed by Databricks (33%), Kubernetes (33%), Azure (33%).
What developer tools does Si use?
CloudFormation is named in 33% of job postings at Si, followed by Rest API (33%), Terraform (33%), dbt (33%).
Which engineering practices does Si ask for?
ETL/ELT is named in 33% of job postings at Si.
How does your stack fit Si?
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: 0; legacy ones: 0.
How common is the Si stack in its industry?
Share of the 5,828 companies in the same industries, whose stack Alion knows, that use each technology.
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 (33%), Python (33%), as a share of the 3 postings of the last 12 months.
Does Si use AWS?
Yes. AWS is named in 2 of 3 job postings (67%) and required in 1 of them.
What cloud and platforms does Si use?
The cloud and platforms named in Si job postings are AWS (2), Databricks (1), Kubernetes (1) (postings in brackets).
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: 0; 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 3 postings of the last 12 months and were updated on Nov 3, 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: 12 technologies from 3 job postings", as of Nov 3, 2026. https://alion.io/company/si-inc/technologies