Toast tech stack
Toast builds mostly with Kotlin, Java, SQL, JavaScript. Its stack also includes AWS, DynamoDB, PostgreSQL, React.js. Kotlin is named in 144 of the 277 job postings Toast published in the last 12 months (52%). Counted by Alion from the job postings of Toast, updated Nov 14, 2026.
What programming languages does Toast use?
Kotlin is named in 52% of job postings at Toast, followed by Java (50%), SQL (19%), JavaScript (15%).
Kotlin
144 52%
Java
138 50%
SQL
53 19%
JavaScript
41 15%
TypeScript
38 14%
Python
36 13%
Go
15 5%
Apex
9 3%
Show all (15)
What frameworks and libraries does Toast use?
React.js is named in 13% of job postings at Toast, followed by Tailwind CSS (9%), Apache Camel (3%), PyTorch (3%).
React.js
35 13%
Tailwind CSS
25 9%
Apache Camel
8 3%
PyTorch
7 3%
Scikit-learn
7 3%
TensorFlow
7 3%
Angular
6 2%
Show all (30)
What databases does Toast use?
DynamoDB is named in 25% of job postings at Toast, followed by PostgreSQL (23%), Snowflake (8%), OpenSearch (4%).
DynamoDB
68 25%
PostgreSQL
65 23%
Snowflake
21 8%
OpenSearch
11 4%
MySQL
5 2%
Oracle
4 1%
Apache Iceberg
4 1%
Amazon Aurora
3 1%
Show all (10)
What cloud and platforms does Toast use?
AWS is named in 26% of job postings at Toast, followed by RabbitMQ (10%), AWS Lambda (9%), Apache Pulsar (8%).
AWS
73 26%
RabbitMQ
27 10%
AWS Lambda
24 9%
Apache Pulsar
21 8%
Datadog
20 7%
Apache Kafka
17 6%
Spark
17 6%
Show all (51)
And 11 more, each named in fewer postings.
What developer tools does Toast use?
GraphQL is named in 22% of job postings at Toast, followed by Rest API (16%), Claude Code (13%), Cursor (8%).
GraphQL
61 22%
Rest API
44 16%
Claude Code
37 13%
Cursor
23 8%
Model Context Protocol
16 6%
Copilot
15 5%
Storybook
13 5%
Show all (34)
What AI and ML technologies does Toast use?
LLM is named in 17% of job postings at Toast, followed by Claude (11%), ChatGPT (<1%), Gemini (<1%).
Which engineering practices does Toast ask for?
AI Agents is named in 21% of job postings at Toast, followed by CI/CD (14%), Machine Learning (9%), Agentic Workflows (5%).
AI Agents
58 21%
CI/CD
39 14%
Prompt Engineering
9 3%
Function Calling
9 3%
Show all (38)
What other technologies does Toast use?
Kotlin Coroutines is named in 1% of job postings at Toast.
Kotlin Coroutines
4 1%
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
133 postingsProduct
21 postingsFinance
17 postingsMobile
12 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: $268k across 138 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| Java | 60 | $309k | +15% |
| Kotlin | 57 | $309k | +15% |
| AWS | 32 | $272k | +1% |
| SQL | 26 | $202k | −25% |
| DynamoDB | 24 | $272k | +1% |
| PostgreSQL | 20 | $282k | +5% |
| Python | 20 | $272k | +1% |
| TypeScript | 20 | $254k | −5% |
| LLM | 18 | $309k | +15% |
| JavaScript | 15 | $254k | −5% |
How is the Toast 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 Toast stack?
Toast scores 83 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 Toast stack in its industry?
Share of the 1,166 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 (52%), Java (50%), SQL (19%), JavaScript (15%), TypeScript (14%), as a share of the 277 postings of the last 12 months.
Does Toast use React.js?
Yes. React.js is named in 35 of 277 job postings (13%) and required in 19 of them.
What cloud and platforms does Toast use?
The cloud and platforms named in Toast job postings are AWS (73), RabbitMQ (27), AWS Lambda (24) (postings in brackets).
What skills do you need for a Backend job at Toast?
Backend postings at Toast most often require Kotlin (106), Java (92), AWS (33), LLM (27), out of 133 postings in the last 12 months.
Is the Toast tech stack changing?
Yes. FFmpeg, C, Atlantis, Cloudflare first appeared in Toast job postings in the last six months.
How modern is the Toast tech stack?
Toast scores 83 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 Toast tech stack?
Alion reads every job posting Toast publishes and tags the technologies each one names. The figures on this page count the 277 postings of the last 12 months and were updated on Nov 14, 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: 183 technologies from 277 job postings", as of Nov 14, 2026. https://alion.io/company/toasttab/technologies