Flex Spring tech stack
Flex Spring builds mostly with Java, JavaScript, SQL, Python. Its stack also includes ElasticSearch, JUnit, Rest-Assured, AWS. Java is named in 5 of the 9 job postings Flex Spring published in the last 12 months (56%). Counted by Alion from the job postings of Flex Spring, updated Oct 13, 2026.
What programming languages does Flex Spring use?
Java is named in 56% of job postings at Flex Spring, followed by JavaScript (33%), SQL (33%), Python (11%).
What frameworks and libraries does Flex Spring use?
JUnit is named in 33% of job postings at Flex Spring, followed by Rest-Assured (33%), Selenium (33%), React.js (22%).
What databases does Flex Spring use?
ElasticSearch is named in 33% of job postings at Flex Spring, followed by MongoDB (22%).
ElasticSearch
3 33%
MongoDB
2 22%
What cloud and platforms does Flex Spring use?
AWS is named in 22% of job postings at Flex Spring, followed by Docker Swarm (11%), Kubernetes (11%), Linux (11%).
AWS
2 22%
Docker Swarm
1 11%
Kubernetes
1 11%
Perplexity
1 11%
ActiveMQ
1 11%
Postman
1 11%
What developer tools does Flex Spring use?
Rest API is named in 78% of job postings at Flex Spring, followed by GraphQL (56%), JMeter (22%), Docker (11%).
What AI and ML technologies does Flex Spring use?
ChatGPT is named in 11% of job postings at Flex Spring, followed by Claude (11%), Gemini (11%), LLM (11%).
Which engineering practices does Flex Spring ask for?
SOAP is named in 67% of job postings at Flex Spring, followed by CI/CD (22%), IAM (11%), Configuration Management (11%).
What does each Flex Spring team work with?
The technologies each team's postings require most often, with the number of postings that require them.
QA
3 postingsHow does your stack fit Flex Spring?
How is the Flex Spring 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 Spring stack?
Flex Spring scores 88 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 Flex Spring stack in its industry?
Share of the 368 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Flex Spring apart
Companies with a stack like Flex Spring
Questions about the Flex Spring tech stack
What programming languages does Flex Spring use?
The languages named in Flex Spring job postings are Java (56%), JavaScript (33%), SQL (33%), Python (11%), as a share of the 9 postings of the last 12 months.
Does Flex Spring use JUnit?
Yes. JUnit is named in 3 of 9 job postings (33%) and required in 3 of them.
What cloud and platforms does Flex Spring use?
The cloud and platforms named in Flex Spring job postings are AWS (2), Docker Swarm (1), Kubernetes (1) (postings in brackets).
What skills do you need for a QA job at Flex Spring?
QA postings at Flex Spring most often require Java (3), ElasticSearch (2), JMeter (2), MongoDB (2), out of 3 postings in the last 12 months.
Is the Flex Spring tech stack changing?
Yes. ElasticSearch, SQL, CI/CD, JMeter first appeared in Flex Spring job postings in the last six months.
How modern is the Flex Spring tech stack?
Flex Spring scores 88 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 Flex Spring tech stack?
Alion reads every job posting Flex Spring publishes and tags the technologies each one names. The figures on this page count the 9 postings of the last 12 months and were updated on Oct 13, 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 Spring tech stack: 31 technologies from 9 job postings", as of Oct 13, 2026. https://alion.io/company/flexspring/technologies