Pennant tech stack
Pennant builds mostly with Node JS, SQL, TypeScript, Go. Its stack also includes GCP, LangSmith, PostgreSQL, Nest.JS. Node JS is named in 3 of the 4 job postings Pennant published in the last 12 months (75%). Counted by Alion from the job postings of Pennant, updated Sep 28, 2026.
What programming languages does Pennant use?
Node JS is named in 75% of job postings at Pennant, followed by SQL (75%), TypeScript (75%), Go (75%).
What frameworks and libraries does Pennant use?
Nest.JS is named in 75% of job postings at Pennant, followed by LangChain (25%), Next.js (25%), Playwright (25%).
Nest.JS
3 75%
LangChain
1 25%
Next.js
1 25%
Playwright
1 25%
React.js
1 25%
Jest
1 25%
Tailwind CSS
1 25%
Vitest
1 25%
What databases does Pennant use?
PostgreSQL is named in 75% of job postings at Pennant, followed by BigQuery (50%), Google BigQuery (50%).
BigQuery 
What cloud and platforms does Pennant use?
GCP is named in 75% of job postings at Pennant, followed by LangSmith (75%), OpenAI (75%), Datadog (50%).
GCP
3 75%
LangSmith
3 75%
Datadog
2 50%
Sentry
2 50%
Figma
1 25%
Kubernetes
1 25%
Show all (9)
What developer tools does Pennant use?
Docker is named in 25% of job postings at Pennant, followed by Terraform (25%), gRPC (25%).
What AI and ML technologies does Pennant use?
LLM is named in 50% of job postings at Pennant.
LLM
2 50%
Which engineering practices does Pennant ask for?
AI Agents is named in 100% of job postings at Pennant, followed by World Models (100%), ETL/ELT (25%), Function Calling (25%).
AI Agents
4 100%
Function Calling
1 25%
Prompt Engineering
1 25%
How does your stack fit Pennant?
How modern is the Pennant stack?
Pennant scores 82 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 Pennant
Questions about the Pennant tech stack
What programming languages does Pennant use?
The languages named in Pennant job postings are Node JS (75%), SQL (75%), TypeScript (75%), Go (75%), Python (50%), as a share of the 4 postings of the last 12 months.
Does Pennant use Nest.JS?
Yes. Nest.JS is named in 3 of 4 job postings (75%) and required in 2 of them.
What cloud and platforms does Pennant use?
The cloud and platforms named in Pennant job postings are GCP (3), LangSmith (3), OpenAI (3) (postings in brackets).
Is the Pennant tech stack changing?
No new technology has appeared in Pennant job postings in the last six months.
How modern is the Pennant tech stack?
Pennant scores 82 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 Pennant tech stack?
Alion reads every job posting Pennant publishes and tags the technologies each one names. The figures on this page count the 4 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, "Pennant tech stack: 37 technologies from 4 job postings", as of Sep 28, 2026. https://alion.io/company/pennant-2/technologies