Sia tech stack
Sia builds mostly with Python, SQL, Java, C++. Its stack also includes AWS, Azure, PostgreSQL, LangChain. AWS is named in 282 of the 387 job postings Sia published in the last 12 months (73%). Counted by Alion from the job postings of Sia, updated Sep 28, 2026.
What programming languages does Sia use?
Python is named in 64% of job postings at Sia, followed by SQL (34%), Java (22%), C++ (19%).
Python
249 64%
SQL
131 34%
Java
84 22%
C++
75 19%
PowerShell
49 13%
Ruby
48 12%
Scala
29 7%
JavaScript
17 4%
Show all (15)
What frameworks and libraries does Sia use?
LangChain is named in 11% of job postings at Sia, followed by PoC Library (11%), Hadoop (8%), LlamaIndex (7%).
LangChain
43 11%
Hadoop
31 8%
LlamaIndex
28 7%
Flask
24 6%
PyTorch
21 5%
TensorFlow
21 5%
Transformers
19 5%
Show all (46)
And 6 more, each named in fewer postings.
What databases does Sia use?
PostgreSQL is named in 19% of job postings at Sia, followed by Snowflake (10%), Pinecone (1%), Amazon Redshift (1%).
PostgreSQL
75 19%
Snowflake
39 10%
Pinecone
5 1%
Amazon Redshift
4 1%
Milvus
3 1%
Weaviate
3 1%
Google BigQuery
2 1%
Qdrant
2 1%
Show all (14)
What cloud and platforms does Sia use?
AWS is named in 73% of job postings at Sia, followed by Azure (71%), GCP (67%), Kubernetes (21%).
AWS
282 73%
Azure
276 71%
GCP
261 67%
Kubernetes
83 21%
Databricks
77 20%
Power BI
54 14%
Show all (34)
What developer tools does Sia use?
Docker is named in 23% of job postings at Sia, followed by Terraform (17%), Git (9%), Rest API (8%).
Docker
88 23%
Terraform
66 17%
Git
35 9%
Rest API
32 8%
Copilot
25 6%
Cursor
13 3%
Claude Code
11 3%
Show all (28)
What AI and ML technologies does Sia use?
Claude is named in 11% of job postings at Sia, followed by LLM (6%), ChatGPT (2%), Mistral (2%).
Show all (11)
Which engineering practices does Sia ask for?
Machine Learning is named in 39% of job postings at Sia, followed by CI/CD (28%), Computer Vision (19%), NLP (14%).
CI/CD
108 28%
Computer Vision
72 19%
NLP
55 14%
Time Series Forecasting
44 11%
RAG
41 11%
Show all (47)
And 7 more, each named in fewer postings.
What does each Sia team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Data Science
136 postingsSecurity
65 postingsAI/ML
56 postingsAnalytics
27 postingsBackend
22 postingsLeadership
13 postingsHow does your stack fit Sia?
How much does Sia pay by technology?
Median stated pay of the postings that name each technology, against the median of all Sia postings with stated pay: $142k across 47 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Azure | 33 | $136k | −4% |
| AWS | 31 | $136k | −4% |
| GCP | 28 | $136k | −4% |
| Python | 20 | $142k | 0% |
| OpenAI | 20 | $139k | −2% |
| Claude | 16 | $135k | −5% |
| LangChain | 15 | $147k | +4% |
| LlamaIndex | 13 | $147k | +4% |
| Anthropic | 13 | $136k | −4% |
| LLM | 12 | $151k | +6% |
How is the Sia stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the Sia stack?
Sia scores 84 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: 11; legacy ones: 0.
How common is the Sia stack in its industry?
Share of the 899 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Sia apart
Companies with a stack like Sia
Questions about the Sia tech stack
What programming languages does Sia use?
The languages named in Sia job postings are Python (64%), SQL (34%), Java (22%), C++ (19%), PowerShell (13%), as a share of the 387 postings of the last 12 months.
Does Sia use LangChain?
Yes. LangChain is named in 43 of 387 job postings (11%) and required in 42 of them.
What cloud and platforms does Sia use?
The cloud and platforms named in Sia job postings are AWS (282), Azure (276), GCP (261) (postings in brackets).
What skills do you need for a Data Science job at Sia?
Data Science postings at Sia most often require Azure (109), AWS (105), GCP (105), Python (85), out of 136 postings in the last 12 months.
Is the Sia tech stack changing?
Yes. arXiv, Julia, Perl, Amazon Redshift first appeared in Sia job postings in the last six months.
How modern is the Sia tech stack?
Sia scores 84 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: 11; legacy ones: 0.
How does Alion know the Sia tech stack?
Alion reads every job posting Sia publishes and tags the technologies each one names. The figures on this page count the 387 postings of the last 12 months and were updated on Sep 28, 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, "Sia tech stack: 195 technologies from 387 job postings", as of Sep 28, 2026. https://alion.io/company/sia/technologies