1&1 tech stack
1&1 builds mostly with Python, SQL, Java, JavaScript. Its stack also includes Kubernetes, Linux, SAP BW, PostgreSQL. Python is named in 8 of the 27 job postings 1&1 published in the last 12 months (30%). Counted by Alion from the job postings of 1&1, updated Oct 14, 2026.
What programming languages does 1&1 use?
Python is named in 30% of job postings at 1&1, followed by SQL (26%), Java (22%), JavaScript (15%).
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What frameworks and libraries does 1&1 use?
Spring Boot is named in 7% of job postings at 1&1, followed by ASP.NET Core (4%), Bootstrap (4%), LiteLLM (4%).
What databases does 1&1 use?
SAP BW is named in 7% of job postings at 1&1, followed by PostgreSQL (7%), ElasticSearch (4%), MySQL (4%).
SAP BW 
What cloud and platforms does 1&1 use?
Kubernetes is named in 15% of job postings at 1&1, followed by Linux (11%), Bitbucket (7%), Grafana (7%).
Kubernetes
4 15%
Bitbucket
2 7%
Grafana
2 7%
Apache Kafka
1 4%
ElevenLabs
1 4%
GitHub
1 4%
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What developer tools does 1&1 use?
Prometheus is named in 11% of job postings at 1&1, followed by Git (7%), Model Context Protocol (7%), Docker (7%).
Prometheus
3 11%
Git
2 7%
Docker
2 7%
Adobe After Effects
1 4%
Adobe Premiere Pro
1 4%
Ansible
1 4%
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What AI and ML technologies does 1&1 use?
LLM is named in 7% of job postings at 1&1, followed by ChatGPT (4%), Gemini (4%).
Which engineering practices does 1&1 ask for?
CI/CD is named in 11% of job postings at 1&1, followed by DNS (7%), Human-in-the-Loop (7%), SOAP (7%).
CI/CD
3 11%
RAG
2 7%
Anomaly Detection
1 4%
Embeddings
1 4%
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What does each 1&1 team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Early Careers
7 postingsAI/ML
3 postingsHow does your stack fit 1&1?
How modern is the 1&1 stack?
1&1 scores 86 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 common is the 1&1 stack in its industry?
Share of the 310 companies in the same industries, whose stack Alion knows, that use each technology.
Companies with a stack like 1&1
Questions about the 1&1 tech stack
What programming languages does 1&1 use?
The languages named in 1&1 job postings are Python (30%), SQL (26%), Java (22%), JavaScript (15%), C# (7%), as a share of the 27 postings of the last 12 months.
Does 1&1 use Spring Boot?
Yes. Spring Boot is named in 2 of 27 job postings (7%) and required in 2 of them.
What cloud and platforms does 1&1 use?
The cloud and platforms named in 1&1 job postings are Kubernetes (4), Linux (3), Bitbucket (2) (postings in brackets).
What skills do you need for a Early Careers job at 1&1?
Early Careers postings at 1&1 most often require Java (3), Python (2), SQL (2), out of 7 postings in the last 12 months.
Is the 1&1 tech stack changing?
No new technology has appeared in 1&1 job postings in the last six months.
How modern is the 1&1 tech stack?
1&1 scores 86 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 1&1 tech stack?
Alion reads every job posting 1&1 publishes and tags the technologies each one names. The figures on this page count the 27 postings of the last 12 months and were updated on Oct 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, "1&1 tech stack: 65 technologies from 27 job postings", as of Oct 14, 2026. https://alion.io/company/1-and-1/technologies