OPEN Group tech stack
OPEN Group builds mostly with Python, TypeScript, JavaScript, Apex. Its stack also includes AWS, PoC Library, AWS Lambda, PostgreSQL. AWS is named in 5 of the 10 job postings OPEN Group published in the last 12 months (50%). Counted by Alion from the job postings of OPEN Group, updated Oct 17, 2026.
What programming languages does OPEN Group use?
Python is named in 40% of job postings at OPEN Group, followed by TypeScript (40%), JavaScript (40%), Apex (10%).
What frameworks and libraries does OPEN Group use?
PoC Library is named in 50% of job postings at OPEN Group, followed by Django (30%), Django REST Framework (30%), Playwright (30%).
Django
3 30%
Django REST Framework
3 30%
Playwright
3 30%
Vitest
3 30%
Vue.js
3 30%
LangChain
2 20%
Pandas
2 20%
Show all (12)
What databases does OPEN Group use?
PostgreSQL is named in 40% of job postings at OPEN Group, followed by Amazon Aurora (10%).
PostgreSQL
4 40%
Amazon Aurora
1 10%
What cloud and platforms does OPEN Group use?
AWS is named in 50% of job postings at OPEN Group, followed by AWS Lambda (40%), GitHub (40%), OpenAI (40%).
AWS
5 50%
AWS Lambda
4 40%
GitHub
4 40%
AWS Bedrock
1 10%
AWS Fargate
1 10%
Show all (11)
What developer tools does OPEN Group use?
Docker is named in 40% of job postings at OPEN Group, followed by Vite (30%), ESLint (20%), Mypy (20%).
Docker
4 40%
Vite
3 30%
ESLint
2 20%
Mypy
2 20%
Prettier
2 20%
flake8
2 20%
isort
2 20%
Claude Code
1 10%
Show all (10)
What AI and ML technologies does OPEN Group use?
Claude is named in 40% of job postings at OPEN Group, followed by LLM (30%), Gemini (10%).
Which engineering practices does OPEN Group ask for?
AI Agents is named in 20% of job postings at OPEN Group, followed by CI/CD (20%), OCR (20%), RAG (10%).
What does each OPEN Group team work with?
The technologies each team's postings require most often, with the number of postings that require them.
AI/ML
3 postingsHow does your stack fit OPEN Group?
How much does OPEN Group pay by technology?
Median stated pay of the postings that name each technology, against the median of all OPEN Group postings with stated pay: $627k across 10 postings.
| Technology | Postings with pay | Median | vs company median |
|---|---|---|---|
| AWS | 5 | $691k | +10% |
| PoC Library | 5 | $563k | −10% |
How is the OPEN Group 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 OPEN Group stack?
OPEN Group scores 89 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: 3; legacy ones: 0.
Companies with a stack like OPEN Group
Questions about the OPEN Group tech stack
What programming languages does OPEN Group use?
The languages named in OPEN Group job postings are Python (40%), TypeScript (40%), JavaScript (40%), Apex (10%), Kotlin (10%), as a share of the 10 postings of the last 12 months.
Does OPEN Group use PoC Library?
Yes. PoC Library is named in 5 of 10 job postings (50%) and required in 5 of them.
What cloud and platforms does OPEN Group use?
The cloud and platforms named in OPEN Group job postings are AWS (5), AWS Lambda (4), GitHub (4) (postings in brackets).
What skills do you need for a AI/ML job at OPEN Group?
AI/ML postings at OPEN Group most often require AWS (3), AWS Lambda (2), Amazon ECS (2), Claude (2), out of 3 postings in the last 12 months.
Is the OPEN Group tech stack changing?
Yes. Django, Django REST Framework, Playwright, Vite first appeared in OPEN Group job postings in the last six months.
How modern is the OPEN Group tech stack?
OPEN Group scores 89 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: 3; legacy ones: 0.
How does Alion know the OPEN Group tech stack?
Alion reads every job posting OPEN Group publishes and tags the technologies each one names. The figures on this page count the 10 postings of the last 12 months and were updated on Oct 17, 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, "OPEN Group tech stack: 48 technologies from 10 job postings", as of Oct 17, 2026. https://alion.io/company/open-group-co-jp/technologies