# Senior Java Developer (m/w/d) – Quarkus, GraalVM & API-Integration at Ethinking Gmbh

> Germany · Senior · Backend · open. Source: https://alderhq.app/jobs/personio%3Aethinking-gmbh%3A604613 (read 2026-11-09).

## Facts (observed)

- Company: [Ethinking Gmbh](https://alderhq.app/companies/ethinking-gmbh)
- Location text: Berlin
- Where it can be done from (inferred): Germany (evidence: "Location: Berlin")
- Posted: 2022-02-24 (1719 days ago)
- First seen by alder: 2026-11-04 · last verified: 2026-11-08
- Reposted: 0 times · edited: 0 times
- Apply on the employer's site: https://ethinking-gmbh.jobs.personio.de/job/604613
- Skills listed (inferred): TypeScript, JavaScript, React, Java, GraphQL, AWS, Kubernetes, Docker, LLMs

## Pay and sponsorship

- Posted pay: €60k–€75k per year (from the description)
- Market band for similar posted roles (Berlin, n 6): p25 €76k, median €86k, p75 €115k

## Description (the employer's text)

### Your mission

### You will

- Further develop the XP-Layer and take new features from idea to production.
- Connect CMS APIs, such as Stibo DX CUE, Livingdocs, CoreMedia, Strapi, or WordPress, via REST, GraphQL, or XML web services.
- Transform heterogeneous data models into our generic JSON format for frontends.
- Use GraalVM for polyglot development with JavaScript/TypeScript, for example for flexible, customer-specific transformations.
- Push forward Native Images with Quarkus and GraalVM so our services start faster and use fewer resources.
- Work directly with our customers and their development teams on integration projects.
- Bring AI and agentic approaches into our products, such as LLM-powered features or interfaces for AI agents.
### Your skills

- Several years of experience in backend development with Java
- Solid hands-on experience with Quarkus (required)
- Experience with CMS APIs and integrating external systems via REST, GraphQL, or XML
- Confident handling of data transformation and mapping between different data models
- Experience with containers and Kubernetes, ideally on AWS
- Enjoy working with customers and external development teams
- Good German skills, spoken and written (native level not required), as well as good English
Nice to have

- Experience with GraalVM, especially polyglot with JavaScript/TypeScript
- Experience with Native Images in Quarkus or GraalVM
- Hands-on projects with Stibo DX CUE, Livingdocs, CoreMedia, Strapi, or WordPress
- Initial experience with LLM integrations, AI agents, or agentic development workflows
- Background in the media or publishing industry
### Our offer

### Our Stack

Java · Quarkus · GraalVM · REST · GraphQL · Kubernetes · AWS (incl. Redshift) · React (orchestration UI)

### What we offer

- A gross annual salary of €60,000–75,000, depending on experience
- Full-time, 40 hours per week, with 28 days of vacation
- Permanent employment contract
- A team that works closely together in the Berlin office, with short communication paths and fast decisions
- Products used by millions of people every day
- Real room to shape new topics such as GraalVM, Native Images, and AWS
Work-life balance: Compatibility of family and career (we offer a very flexible working environment and try to make everything possible), Deutschlandticket (public transport pass), modern office in a central location, drinks and snacks

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Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/personio%3Aethinking-gmbh%3A604613 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.