Senior Java Engineer – EU

This is a fully remote position, open to applicants in Spain, +1 more country.

📋 Description

• Create, develop, and sustain backend services utilizing Java and Spring Boot.

• Design REST APIs and implement event-driven integrations using Kafka.

• Produce clean, well-tested code and engage actively in code reviews.

• Collaborate with architects and product owners to decompose requirements and estimate tasks.

• Address production issues while enhancing performance and reliability.

• Build and upgrade backend platforms employing Java, Spring Boot, and microservices.

• Deliver complete production features within a Java microservices environment.

⛳️ Requirements

• Over 6 years of professional experience in backend development using Java.

• Proficient in Java 11+; strong knowledge of Java 8+ features including streams and lambdas.

• Solid understanding of Core Java concepts: OOP, design patterns, collections, multithreading, and concurrency.

• Experience in production environments with Spring Boot and microservices architecture.

• Expertise in REST API design and integration.

• Proficiency in relational databases and SQL (PostgreSQL, Oracle, or similar).

• Familiarity with event streaming or messaging technologies such as Kafka.

• Knowledge of Git, CI/CD pipelines (e.g., Jenkins), and Docker.

• Experience with unit and integration testing frameworks (JUnit, Mockito).

• Fluent in English for daily interactions with clients.

• Residing in Spain or Poland with the legal right to work there.

• Preferred: background in banking, payments, or other financial services.

• Preferred: experience with AWS or another major cloud provider.

• Preferred: knowledge of Kubernetes.

• Preferred: experience with Hibernate / JPA.

• Preferred: exposure to frontend technologies such as React or Angular.

• Preferred: experience in consulting or client-facing projects.

🏝️ Benefits

• People-first company culture.

• Supportive, trusted, and empowered work environment.

• Distributed team with options for remote work.

• Meaningful products and enduring partnerships.

• Opportunities for collaboration with architects and product owners.

• Client-facing work conducted in English.