Toast tech stack
Toast builds mostly with Kotlin, Java, Python, SQL. Its stack also includes DynamoDB, AWS, PostgreSQL, GitHub. Kotlin is named in 35 of the 63 job postings Toast published in the last 12 months (56%). Counted by Alion from the job postings of Toast, updated Sep 29, 2026.
What programming languages does Toast use?
Kotlin is named in 56% of job postings at Toast, followed by Java (52%), Python (16%), SQL (16%).
Kotlin
35 56%
Java
33 52%
Python
10 16%
SQL
10 16%
JavaScript
8 13%
TypeScript
7 11%
Apex
5 8%
Scala
2 3%
Show all (12)
What frameworks and libraries does Toast use?
React.js is named in 10% of job postings at Toast, followed by Tailwind CSS (8%), Lightning Web Components (5%), PyTorch (3%).
React.js
6 10%
Tailwind CSS
5 8%
PyTorch
2 3%
Scikit-learn
2 3%
TensorFlow
2 3%
Angular
1 2%
Show all (14)
What databases does Toast use?
DynamoDB is named in 24% of job postings at Toast, followed by PostgreSQL (19%), Snowflake (8%), OpenSearch (5%).
DynamoDB
15 24%
PostgreSQL
12 19%
Snowflake
5 8%
OpenSearch
3 5%
ElasticSearch
2 3%
Apache Iceberg
1 2%
What cloud and platforms does Toast use?
AWS is named in 22% of job postings at Toast, followed by GitHub (13%), Apache Kafka (13%), RabbitMQ (11%).
AWS
14 22%
GitHub
8 13%
Apache Kafka
8 13%
RabbitMQ
7 11%
AWS Lambda
6 10%
Datadog
4 6%
Apache Pulsar
4 6%
Show all (25)
What developer tools does Toast use?
GraphQL is named in 21% of job postings at Toast, followed by Cursor (13%), Claude Code (10%), Copado (8%).
Show all (15)
What AI and ML technologies does Toast use?
Claude is named in 17% of job postings at Toast, followed by LLM (11%).
Which engineering practices does Toast ask for?
AI Agents is named in 33% of job postings at Toast, followed by Edge AI (21%), CI/CD (19%), Machine Learning (11%).
AI Agents
21 33%
CI/CD
12 19%
Prompt Engineering
5 8%
Platform Engineering
4 6%
Function Calling
2 3%
Show all (30)
What other technologies does Toast use?
Kotlin Coroutines is named in 2% of job postings at Toast.
Kotlin Coroutines
1 2%
What does each Toast team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
33 postingsFinance
5 postingsEnterprise Apps
5 postingsHow does your stack fit Toast?
How much does Toast pay by technology?
Median stated pay of the postings that name each technology, against the median of all Toast postings with stated pay: $260k across 30 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Java | 17 | $254k | −2% |
| Kotlin | 15 | $254k | −2% |
| AWS | 8 | $251k | −3% |
| DynamoDB | 7 | $254k | −2% |
| Claude | 6 | $231k | −11% |
| PostgreSQL | 5 | $254k | −2% |
| Python | 5 | $248k | −5% |
How modern is the Toast stack?
Toast 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: 2; legacy ones: 0.
How common is the Toast stack in its industry?
Share of the 371 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Toast apart
Companies with a stack like Toast
Questions about the Toast tech stack
What programming languages does Toast use?
The languages named in Toast job postings are Kotlin (56%), Java (52%), Python (16%), SQL (16%), JavaScript (13%), as a share of the 63 postings of the last 12 months.
Does Toast use React.js?
Yes. React.js is named in 6 of 63 job postings (10%) and required in 3 of them.
What cloud and platforms does Toast use?
The cloud and platforms named in Toast job postings are AWS (14), GitHub (8), Apache Kafka (8) (postings in brackets).
What skills do you need for a Backend job at Toast?
Backend postings at Toast most often require Kotlin (31), Java (26), Claude (7), Cursor (6), out of 33 postings in the last 12 months.
Is the Toast tech stack changing?
No new technology has appeared in Toast job postings in the last six months.
How modern is the Toast tech stack?
Toast 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: 2; legacy ones: 0.
How does Alion know the Toast tech stack?
Alion reads every job posting Toast publishes and tags the technologies each one names. The figures on this page count the 63 postings of the last 12 months and were updated on Sep 29, 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, "Toast tech stack: 105 technologies from 63 job postings", as of Sep 29, 2026. https://alion.io/company/toasttab/technologies