Flex tech stack
Flex builds mostly with Java, SQL, TypeScript, JavaScript. Its stack also includes AWS, Amazon EKS, DynamoDB, Snowflake. AWS is named in 16 of the 38 job postings Flex published in the last 12 months (42%). Counted by Alion from the job postings of Flex, updated Sep 27, 2026.
What programming languages does Flex use?
Java is named in 37% of job postings at Flex, followed by SQL (32%), TypeScript (16%), JavaScript (16%).
What frameworks and libraries does Flex use?
JUnit is named in 32% of job postings at Flex, followed by React Native (8%), React.js (8%), Spring Boot (8%).
JUnit
12 32%
React Native
3 8%
React.js
3 8%
Spring Boot
3 8%
Cypress
2 5%
Playwright
2 5%
Rest-Assured
2 5%
Selenium
2 5%
Show all (12)
What databases does Flex use?
DynamoDB is named in 37% of job postings at Flex, followed by Snowflake (37%), Amazon Aurora (32%), MySQL (13%).
What cloud and platforms does Flex use?
AWS is named in 42% of job postings at Flex, followed by Amazon EKS (37%), Kubernetes (37%), Datadog (37%).
AWS
16 42%
Amazon EKS
14 37%
Kubernetes
14 37%
Datadog
14 37%
GitHub Actions
12 32%
GitHub
8 21%
Tableau
5 13%
Figma
4 11%
Show all (19)
What developer tools does Flex use?
Gradle is named in 32% of job postings at Flex, followed by Terraform (32%), Rest API (24%), dbt (13%).
Gradle
12 32%
Terraform
12 32%
Rest API
9 24%
dbt
5 13%
Docker
3 8%
AWS CDK
2 5%
Claude Code
2 5%
Cursor
1 3%
Show all (10)
What AI and ML technologies does Flex use?
LLM is named in 13% of job postings at Flex, followed by Claude (5%).
Which engineering practices does Flex ask for?
CI/CD is named in 47% of job postings at Flex, followed by A/B Testing (21%), AI Agents (11%), LLM Guardrails (8%).
CI/CD
18 47%
AI Agents
4 11%
State Management
2 5%
Show all (20)
What does each Flex team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
15 postingsQA
3 postingsData Science
3 postingsHow does your stack fit Flex?
How much does Flex pay by technology?
Median stated pay of the postings that name each technology, against the median of all Flex postings with stated pay: $240k across 25 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| AWS | 12 | $240k | 0% |
| Amazon EKS | 10 | $233k | −3% |
| DynamoDB | 10 | $233k | −3% |
| Java | 10 | $233k | −3% |
| Kubernetes | 10 | $233k | −3% |
| Snowflake | 10 | $233k | −3% |
| Datadog | 9 | $215k | −10% |
| Amazon Aurora | 9 | $215k | −10% |
| GitHub Actions | 9 | $215k | −10% |
| JUnit | 9 | $215k | −10% |
How is the Flex 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 Flex stack?
Flex 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: 2; legacy ones: 0.
How common is the Flex stack in its industry?
Share of the 39 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Flex
Questions about the Flex tech stack
What programming languages does Flex use?
The languages named in Flex job postings are Java (37%), SQL (32%), TypeScript (16%), JavaScript (16%), Python (11%), as a share of the 38 postings of the last 12 months.
Does Flex use JUnit?
Yes. JUnit is named in 12 of 38 job postings (32%) and required in 12 of them.
What cloud and platforms does Flex use?
The cloud and platforms named in Flex job postings are AWS (16), Amazon EKS (14), Kubernetes (14) (postings in brackets).
What skills do you need for a Backend job at Flex?
Backend postings at Flex most often require AWS (15), Amazon EKS (13), DynamoDB (13), Java (13), out of 15 postings in the last 12 months.
Is the Flex tech stack changing?
Yes. Looker, Cypress, Playwright, Rest-Assured first appeared in Flex job postings in the last six months.
How modern is the Flex tech stack?
Flex 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: 2; legacy ones: 0.
How does Alion know the Flex tech stack?
Alion reads every job posting Flex publishes and tags the technologies each one names. The figures on this page count the 38 postings of the last 12 months and were updated on Sep 27, 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, "Flex tech stack: 75 technologies from 38 job postings", as of Sep 27, 2026. https://alion.io/company/flex/technologies