Circle tech stack
Circle builds mostly with SQL, Python, JavaScript, Go. Its stack also includes AWS, GCP, React.js, MySQL. ChatGPT is named in 21 of the 65 job postings Circle published in the last 12 months (32%). Counted by Alion from the job postings of Circle, updated Nov 12, 2026.
What programming languages does Circle use?
SQL is named in 29% of job postings at Circle, followed by Python (23%), JavaScript (15%), Go (15%).
SQL
19 29%
Python
15 23%
JavaScript
10 15%
Go
10 15%
TypeScript
8 12%
Java
7 11%
Ruby
4 6%
Rust
2 3%
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What frameworks and libraries does Circle use?
React.js is named in 8% of job postings at Circle, followed by Ruby on Rails (6%), Next.js (3%), Tailwind CSS (3%).
React.js
5 8%
Ruby on Rails
4 6%
Next.js
2 3%
Tailwind CSS
2 3%
LangGraph
1 2%
LightGBM
1 2%
XGBoost
1 2%
LangChain
1 2%
What databases does Circle use?
MySQL is named in 6% of job postings at Circle, followed by PostgreSQL (6%), Google BigQuery (2%), Oracle (2%).
What cloud and platforms does Circle use?
AWS is named in 12% of job postings at Circle, followed by GCP (12%), Kubernetes (12%), Azure (8%).
AWS
8 12%
GCP
8 12%
Kubernetes
8 12%
Azure
5 8%
Figma
4 6%
Amazon EKS
2 3%
Chainalysis
2 3%
Okta
2 3%
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What developer tools does Circle use?
Cursor is named in 11% of job postings at Circle, followed by Model Context Protocol (8%), Terraform (8%), Claude Code (8%).
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What AI and ML technologies does Circle use?
ChatGPT is named in 32% of job postings at Circle, followed by Claude (23%), LLM (8%), Gemini (3%).
Which engineering practices does Circle ask for?
AI Agents is named in 23% of job postings at Circle, followed by CI/CD (17%), Agentic Workflows (9%), Blue-Green Deployment (6%).
AI Agents
15 23%
CI/CD
11 17%
Smart Contracts
4 6%
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What other technologies does Circle use?
Solana is named in 5% of job postings at Circle, followed by Ethereum (3%).
What does each Circle team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Finance
10 postingsBackend
9 postingsManagement
7 postingsAnalytics
5 postingsDevOps
5 postingsHow does your stack fit Circle?
How much does Circle pay by technology?
Median stated pay of the postings that name each technology, against the median of all Circle postings with stated pay: $205k across 53 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Python | 15 | $205k | 0% |
| ChatGPT | 15 | $170k | −17% |
| SQL | 14 | $205k | 0% |
| Claude | 11 | $170k | −17% |
| JavaScript | 10 | $198k | −3% |
| TypeScript | 8 | $205k | 0% |
| Go | 7 | $205k | 0% |
| Kubernetes | 7 | $205k | 0% |
| Java | 6 | $237k | +15% |
| AWS | 6 | $205k | 0% |
How is the Circle 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 Circle stack?
Circle scores 85 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: 4; legacy ones: 0.
How common is the Circle stack in its industry?
Share of the 335 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Circle apart
Companies with a stack like Circle
Questions about the Circle tech stack
What programming languages does Circle use?
The languages named in Circle job postings are SQL (29%), Python (23%), JavaScript (15%), Go (15%), TypeScript (12%), as a share of the 65 postings of the last 12 months.
Does Circle use React.js?
Yes. React.js is named in 5 of 65 job postings (8%) and required in 5 of them.
What cloud and platforms does Circle use?
The cloud and platforms named in Circle job postings are AWS (8), GCP (8), Kubernetes (8) (postings in brackets).
What skills do you need for a Finance job at Circle?
Finance postings at Circle most often require ChatGPT (7), Claude (3), out of 10 postings in the last 12 months.
Is the Circle tech stack changing?
Yes. Gemini, Superset, Okta, SLI/SLO/SLA first appeared in Circle job postings in the last six months.
How modern is the Circle tech stack?
Circle scores 85 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: 4; legacy ones: 0.
How does Alion know the Circle tech stack?
Alion reads every job posting Circle publishes and tags the technologies each one names. The figures on this page count the 65 postings of the last 12 months and were updated on Nov 12, 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, "Circle tech stack: 93 technologies from 65 job postings", as of Nov 12, 2026. https://alion.io/company/circle/technologies