> Markdown version of [/jobs/ext/3005132-senior-java-developer](https://www.wearedevelopers.com/jobs/ext/3005132-senior-java-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior Java Developer

- **Company:** Pixie
- **Location:** Sant Joan, Spain (Remote available)
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Amazon Web Services, Cloud Computing, Junit, Python (Programming Language), PostgreSQL, MongoDB, Redis, Mockito, Data Streaming, Java Application Server, Cloud Platform System, Spring-boot, Containerization, Apache Kafka, Code Restructuring, Docker, Microservices
- **Published:** September 19, 2026
- **Apply:** https://www.buscojobs.com.es/senior-java-developer-en-san-juan-ID-372059837

## About the Role

8+ years of professional experience with Java
3+ years working with Java 17 or 21
Strong experience with Spring / Spring Boot
Experience with Kafka
Experience with Redis and PostgreSQL or MongoDB
Strong testing experience with JUnit 5 and Mockito
Experience with AWS or equivalent cloud environments
Knowledge of streaming and microservices architectures
Nice to have
Experience leading complex migrations or refactoring projects
Multimodule Java applications
Docker / containerization and multi-architecture images
Python knowledge

## Description

Hiring Freelance Senior Java DevelopersWe are looking for a Senior Java Developer to join a long-term project for a leading financial institution.Location: MadridRemote: 100% remoteDuration: Long-termEnglish: C1+Requirements8+ years of professional experience with Java3+ years working with Java 17 or 21Strong experience with Spring / Spring BootExperience with KafkaExperience with Redis and PostgreSQL or MongoDBStrong testing experience with JUnit 5 and MockitoExperience with AWS or equivalent cloud environmentsKnowledge of streaming and microservices architecturesNice to haveExperience leading complex migrations or refactoring projectsMultimodule Java applicationsDocker / containerization and multi-architecture imagesPython knowledgeT echnical test: YesClient interview: YesIf you are interested do not hesitate to send me your most updated CV al


## Related Videos

- [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered)
- [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis)
- [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career)
- [Application Modernization and Rabbits](https://www.wearedevelopers.com/videos/120-application-modernization-and-rabbits)
- [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker)
- [Accelerating Authentication Architecture: Taking Passwordless to the Next Level](https://www.wearedevelopers.com/videos/733-accelerating-authentication-architecture-taking-passwordless-to-the-next-level)

## Related Articles

- [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries)
- [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again)
- [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for)
- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)
- [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)