Senior Java Full-Stack Developer

Quick Facts

• Role: Senior Java Full-Stack Developer

• Scope: Development and maintenance of business applications (backend, databases, REST API integrations) in a microservices architecture

Description

You will design, implement, and evolve new features for business applications, collaborating with analysts and the rest of the project team. The role focuses on high-quality code using established best practices, including REST APIs, backend services, databases, testing, and production troubleshooting. You will also support workflow-oriented business processes and use AI tools to assist software development and maintenance.

Responsibilities

• Design, develop, and maintain microservices-based applications

• Build backend solutions with Java, Spring Boot, Spring Cloud, and Hibernate

• Design and implement REST API and system integrations

• Apply Domain-Driven Design (DDD) to translate business requirements into technical solutions

• Implement asynchronous communication using Apache Kafka

• Create and maintain unit, integration, and automated tests

• Implement business process solutions using BPMN and workflow engines

• Ensure code quality via code reviews, pair programming, and best practices

• Diagnose, monitor, and optimize application performance; resolve production issues

• Implement resilience patterns for distributed systems

• Collaborate with business analysts, architects, testers, integration teams, and DevOps

• Participate in CI/CD and deployments to test and production environments

• Use AI/agentic AI tools to support analysis, design, implementation, testing, and maintenance

• Participate in Agile/Scrum ceremonies and contribute to technical standards and team best practices

Requirements

• Minimum 5 years of commercial Java development

• Experience with Apache Kafka

• Very good knowledge of Spring Framework, Spring Boot, Spring Cloud, and Hibernate/JPA

• Experience designing and building REST APIs

• Very good knowledge of relational databases and SQL

• Experience with microservices architecture

• Knowledge of Docker

• Knowledge of Git and CI/CD practices

• Knowledge of DDD and practical experience applying it

• Knowledge of OOP and Functional Programming paradigms

• Ability to create unit and integration tests

• Practical knowledge of testing frameworks/tools: JUnit, TestNG, Spock, WireMock, Testcontainers

• Knowledge of BPMN and experience with process/workflow engines

• Knowledge of resilience patterns for distributed systems (Circuit Breaker, Retry, Bulkhead, Fallback)

• Ability to diagnose and solve application performance problems

• Experience working in Agile/Scrum teams

• Ability to use AI tools supporting the development process

Benefits

• Benefits via a cafeteria system

• Long-term collaboration under a B2B contract

• Opportunity to work on a project with real impact on the client’s business direction