Opn tech stack
Opn builds mostly with JavaScript, Java, Node JS, Go. Its stack also includes Azure, AWS, ElasticSearch, PostgreSQL. Azure is named in 7 of the 12 job postings Opn published in the last 12 months (58%). Counted by Alion from the job postings of Opn, updated Sep 28, 2026.
What programming languages does Opn use?
JavaScript is named in 42% of job postings at Opn, followed by Java (33%), Node JS (25%), Go (17%).
What frameworks and libraries does Opn use?
React Native is named in 33% of job postings at Opn, followed by React.js (33%), Next.js (25%), Spring Boot (25%).
React Native
4 33%
React.js
4 33%
Next.js
3 25%
Spring Boot
3 25%
Appium
1 8%
Hibernate
1 8%
JUnit
1 8%
Mockito
1 8%
Show all (14)
What databases does Opn use?
ElasticSearch is named in 42% of job postings at Opn, followed by PostgreSQL (42%), MySQL (8%).
What cloud and platforms does Opn use?
Azure is named in 58% of job postings at Opn, followed by AWS (50%), Kubernetes (50%), GCP (42%).
Azure
7 58%
AWS
6 50%
Kubernetes
6 50%
GCP
5 42%
Amazon EKS
1 8%
Figma
1 8%
Postman
1 8%
Datadog
1 8%
Show all (9)
What developer tools does Opn use?
Docker is named in 33% of job postings at Opn, followed by Copilot (25%), Cursor (17%), Git (8%).
Show all (9)
Which engineering practices does Opn ask for?
Platform Engineering is named in 25% of job postings at Opn, followed by CI/CD (17%), Machine Learning (8%), RAG (8%).
Platform Engineering
3 25%
CI/CD
2 17%
RAG
1 8%
SLI/SLO/SLA
1 8%
Service Mesh
1 8%
What does each Opn team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Backend
5 postingsHow does your stack fit Opn?
How is the Opn 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 Opn stack?
Opn scores 81 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: 1; legacy ones: 0.
How common is the Opn stack in its industry?
Share of the 629 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like Opn
Questions about the Opn tech stack
What programming languages does Opn use?
The languages named in Opn job postings are JavaScript (42%), Java (33%), Node JS (25%), Go (17%), SQL (17%), as a share of the 12 postings of the last 12 months.
Does Opn use React Native?
Yes. React Native is named in 4 of 12 job postings (33%) and required in 2 of them.
What cloud and platforms does Opn use?
The cloud and platforms named in Opn job postings are Azure (7), AWS (6), Kubernetes (6) (postings in brackets).
What skills do you need for a Backend job at Opn?
Backend postings at Opn most often require Java (2), Next.js (2), Node JS (2), React Native (2), out of 5 postings in the last 12 months.
Is the Opn tech stack changing?
Yes. Copilot, Cursor, GCP, LLM first appeared in Opn job postings in the last six months.
How modern is the Opn tech stack?
Opn scores 81 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: 1; legacy ones: 0.
How does Alion know the Opn tech stack?
Alion reads every job posting Opn publishes and tags the technologies each one names. The figures on this page count the 12 postings of the last 12 months and were updated on Sep 28, 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, "Opn tech stack: 50 technologies from 12 job postings", as of Sep 28, 2026. https://alion.io/company/opn/technologies