Java Fullstack Developer

About the Role

On behalf of our clients across banking, the public sector, and e-commerce (including a market leader in the region), we are looking for experienced Java Fullstack Developers open to a hybrid role in Warsaw. We offer the opportunity to drive system development using modern technologies across the Java ecosystem (Java 17+, Spring Boot, microservices, Cloud, Docker/Kubernetes) within mature teams and diverse projects.

Responsibilities

• Design, develop, and maintain robust, scalable software solutions using Java and modern frameworks.
• Implement clean, well-tested REST/SOAP APIs and integrate frontend interfaces with backend services.
• Write unit and integration tests to ensure code quality, stability, and high performance.
• Collaborate within cross-functional, Agile teams on system architecture, code reviews, and feature planning.
• Debug, optimize, and refactor existing applications while maintaining documentation and supporting deployment pipelines.

Requirements

• Minimum 5 years of commercial experience as a Java Developer
• Solid hands-on experience with core technologies: Java 11–21, Spring, and Spring Boot
• Proficiency in data persistence: JPA, Hibernate, and Spring Data
• Hands-on experience developing RESTful and SOAP web services
• Strong knowledge of relational databases and SQL
• Proficiency with version control systems (Git)
• Solid unit and integration testing skills (JUnit, Spock, Mockito) alongside frontend testing experience (Jest, Cypress, TestNG, or similar)
• Good understanding of containerization (Docker)
• Experience with build automation tools: Maven or Gradle
• Hands-on frontend development experience using Angular and/or React
• Strong English communication skills (minimum B2 level)
• Readiness for hybrid work in Warsaw

Nice to Have

Experience in at least one of the following areas (project-dependent):

• Cloud platforms: AWS, GCP, or Azure
• Container orchestration: Kubernetes
• Messaging & Event Streaming: Kafka or JMS
• Database & Caching technologies: NoSQL databases, Redis, Ignite, or Hazelcast
• Modern Web Development: JavaScript (ES6+), TypeScript, RxJS, state management (NgRx / Redux / Vuex), and build tooling (npm / Webpack / Angular CLI)
• Secondary Languages: Kotlin
• Application Security: OWASP Top 10, OAuth2, JWT, and Spring Security
• Quality & Operations: Performance optimization/testing, CI/CD pipelines, and Jenkins

We Offer

• A good and friendly atmosphere in the company and the satisfaction of working with both departmental colleagues and direct superiors.
• Large internal technology conferences, star parties, and team outings.
• Flexibility in working hours and mode of work delivery: remotely or in a hybrid model.
• Clear, straightforward development paths: choose between a managerial or expert development path.
• Facilitation of the development of desired competencies, subsidized training, and courses.
• Many years of experience in the market and implementation of national and international projects.
• Free participation in language lessons for those who speak fluently and wish to maintain or develop their language skills.
• Attractively decorated relaxation areas, equipped kitchens with aromatic coffee, and support for all passions, including soccer teams, marathon runners, and other active sports lovers.

About the Company

We are committed to providing a unique atmosphere, supporting professional growth, and ensuring comfort at work. Join our team and contribute to impactful projects in a dynamic and supportive environment.

Apply for the Position

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