Java Backend Engineer

JUSTROCKET

Backend Engineer responsible for designing and maintaining Java-based backend applications for a fast-scaling IT company in Romania, focusing on code quality and team collaboration.

Posted 7/20/2026full-timeRemote • 🇷🇴 RomaniaMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Java backend development, particularly with Spring Boot and microservices architecture, while optimizing performance and ensuring data integrity. Proven ability to mentor teams and implement modern deployment practices using CI/CD and containerization.

Highest-signal resume keywords

Java 8+ Backend DevelopmentSpring Boot ProficiencyRESTful Microservices DesignSQL Query OptimizationDocker and Kubernetes Knowledge

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Java 8+Spring BootRESTful MicroservicesSQLAsynchronous ProgrammingApache KafkaPerformance TuningSecurity Best Practices

Soft Skills

MentoringCollaborationContinuous Improvement

Tools & Technologies

DockerKubernetesCI/CDJenkins

Industry Keywords

Microservices ArchitectureEvent-Driven ArchitectureRelational Database IntegrationCode ReviewsClean Code Practices

Tech Stack

Tools & technologies

AngularApacheDistributed SystemsDockerJavaJenkinsKafkaKubernetesMicroservicesReactSpringSpring BootSpringBootSQL

About the role

Key responsibilities & impact

Design scalable solutions: Develop and maintain Java-based backend applications and microservices with a focus on performance and reliability.
Deliver high-quality code: Implement Spring Boot applications following best practices in clean code, testing, and performance optimization.
Support modern deployment practices: Work closely with DevOps to containerize and deploy applications and integrate CI/CD pipelines.
Leverage event-driven architecture: Use events to build robust, asynchronous systems that support scalability and decoupled services.
Optimize data interactions: Design and maintain efficient relational database integrations that ensure data integrity and system responsiveness.
Contribute to strong engineering standards: Engage in architectural discussions, perform code reviews, and promote best practices.
Leverage AI code companions: Utilize hands-on AI code companions and intelligent development tools to enhance productivity, accelerate development cycles, and maintain code quality standards while staying current with modern development practices.
Mentor and grow the team: Provide guidance to junior developers and foster a culture of collaboration and continuous improvement.

Requirements

What you’ll need

5+ years of experience in backend software development using Java 8 or above
Full stack development experience with proficiency across backend and frontend technologies (angular or react)
Strong proficiency with Spring Boot and the Spring framework ecosystem
Hands-on experience designing and implementing RESTful microservices
Proficiency in writing optimized SQL queries and working with databases
Working knowledge of Apache Kafka or similar messaging platforms
Strong understanding of asynchronous programming, message-driven systems, and distributed systems
Good understanding of Docker, orchestration platforms like Kubernetes, and CI/CD tools such as Jenkins for automated build and deployment
Fluent in English
Nice to have: German Language Skills
Familiarity with performance tuning and monitoring Java applications
Knowledge of security best practices in backend development

Benefits

Comp & perks

Assistance in setting up the project/integrating with the team
Guidance while onboarding
Support in any aspect of your activities
Other Perks & Benefits
Possibility to work remote
anything you are missing – let's talk!