New
Senior Java Backend Developer - 100% remote
Cooperation type: Employment
Compensation: from 2400 € / month
Location: Remote 100%
Seniority: Senior
Project length: 12 months
Start: 1/4/2027
Language: Slovak
Profession: Back-end
Required technologies
General Description
We are seeking a Senior Backend Developer for a fintech client. You will build and operate production-grade Java services together with the DevOps tooling around them.
AI-assisted development is part of the day-to-day work. Experience integrating AI features into production applications is welcome.
What will you be doing?
- Design, build, and operate backend services using Java and Spring Boot.
- Develop and maintain microservices, including the messaging and API surface between them.
- Take ownership of services throughout their full lifecycle: design, delivery, deployment, and operation.
- Strengthen CI/CD, testing, and observability practices around the platform.
- Use AI tooling effectively throughout the software development lifecycle, including coding, code review, refactoring, and test generation.
- Apply sound engineering judgment to assess where AI helps and where it does not in the development process.
- Collaborate closely with product, engineering, and platform partners.
- Contribute to code reviews, provide and receive feedback, and work as part of a team.
- Maintain a strong focus on security and clean, maintainable design over quick fixes.
Requirements
Required
- Experience with Agile software development.
- Strong understanding of object-oriented programming and object-oriented design concepts.
- Java 17 or later and Spring Boot 3.x.
- Microservices, including clean service boundaries, inter-service contracts, and resilience patterns.
- REST principles and RESTful web services, as well as SOAP web services.
- Documenting REST APIs with OpenAPI.
- Relational databases, especially MySQL, and sound SQL fundamentals.
- JPA and Hibernate, including database migrations with Liquibase.
- Secure authentication and authorization using OAuth 2.0 and JWT.
- Integration and component testing, including Testcontainers.
- Maven and GitLab CI/CD pipelines.
- AWS and Docker.
- Production observability covering logging, metrics, and tracing.
- Fluent English.
Nice to have
- WebFlux and reactive Spring.
- NoSQL technologies, particularly AWS DynamoDB and S3.
- Groovy and Spock for testing.
- Postman.
- Scripting with Bash or Python.
- Dynatrace, Splunk, or CloudWatch.
- JIRA and Confluence.
- Container and serverless infrastructure beyond Docker, such as ECS or Lambda.
- Experience integrating AI features into production applications.
Ways of working
- Senior-level ownership and sound engineering judgment.
- A pragmatic, outcome-focused approach.
- Commitment to clean, maintainable design rather than quick fixes.
- Collaborative approach to code reviews, feedback, and teamwork.
- Strong focus on security.
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