Base Layer tech stack
Base Layer builds mostly with Python, SQL, JavaScript, TypeScript. Its stack also includes Google Cloud Run, GCP, PostgreSQL, FastAPI. Python is named in 11 of the 24 job postings Base Layer published in the last 12 months (46%). Counted by Alion from the job postings of Base Layer, updated Oct 15, 2026.
What programming languages does Base Layer use?
Python is named in 46% of job postings at Base Layer, followed by SQL (17%), JavaScript (8%), TypeScript (4%).
What frameworks and libraries does Base Layer use?
FastAPI is named in 17% of job postings at Base Layer, followed by SQLAlchemy (8%), SQLModel (8%).
What databases does Base Layer use?
PostgreSQL is named in 17% of job postings at Base Layer, followed by BigQuery (4%), Google BigQuery (4%), Snowflake (4%).
BigQuery 
What cloud and platforms does Base Layer use?
Google Cloud Run is named in 21% of job postings at Base Layer, followed by GCP (21%), LangSmith (13%), Cloudflare (8%).
Google Cloud Run
5 21%
GCP
5 21%
LangSmith
3 13%
Cloudflare
2 8%
Fastly
2 8%
Apache Kafka
1 4%
Spark
1 4%
What developer tools does Base Layer use?
Braintrust is named in 13% of job postings at Base Layer, followed by Microsoft Excel (4%), Model Context Protocol (4%).
What AI and ML technologies does Base Layer use?
LLM is named in 17% of job postings at Base Layer.
LLM
4 17%
Which engineering practices does Base Layer ask for?
AI Agents is named in 88% of job postings at Base Layer, followed by Embeddings (33%), Function Calling (13%), LLM Evaluation (13%).
AI Agents
21 88%
Embeddings
8 33%
Function Calling
3 13%
Platform Engineering
1 4%
What does each Base Layer team work with?
The technologies each team's postings require most often, with the number of postings that require them.
AI/ML
5 postingsBackend
3 postingsHow does your stack fit Base Layer?
How modern is the Base Layer stack?
Base Layer scores 75 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 common is the Base Layer stack in its industry?
Share of the 401 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Base Layer apart
Companies with a stack like Base Layer
Questions about the Base Layer tech stack
What programming languages does Base Layer use?
The languages named in Base Layer job postings are Python (46%), SQL (17%), JavaScript (8%), TypeScript (4%), as a share of the 24 postings of the last 12 months.
Does Base Layer use FastAPI?
Yes. FastAPI is named in 4 of 24 job postings (17%) and required in 4 of them.
What cloud and platforms does Base Layer use?
The cloud and platforms named in Base Layer job postings are Google Cloud Run (5), GCP (5), LangSmith (3) (postings in brackets).
What skills do you need for a AI/ML job at Base Layer?
AI/ML postings at Base Layer most often require Python (5), Braintrust (3), LLM (3), LangSmith (3), out of 5 postings in the last 12 months.
Is the Base Layer tech stack changing?
No new technology has appeared in Base Layer job postings in the last six months.
How modern is the Base Layer tech stack?
Base Layer scores 75 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 Base Layer tech stack?
Alion reads every job posting Base Layer publishes and tags the technologies each one names. The figures on this page count the 24 postings of the last 12 months and were updated on Oct 15, 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, "Base Layer tech stack: 29 technologies from 24 job postings", as of Oct 15, 2026. https://alion.io/company/base-layer/technologies