Senior Java Developer (Kotlin)

Summary

Remote Crew is looking for a Senior Java Developer to join an engineering team focused on building robust, scalable backend systems. You’ll work in an Agile, collaborative environment, owning technical implementation across the full development lifecycle. This role involves working with modern JVM technologies, infrastructure tooling such as Terraform and Kubernetes, and distributed systems components like Kafka and GraphQL Federation. You’ll contribute to designing and developing backend services while helping shape engineering best practices and mentoring junior developers.

Salary: €40k-€50k (Employee) \\ up to €60k/year (B2B)

Location: Remote (Portugal)

What You’ll Do

• Design, develop, and maintain scalable backend services using Java (Kotlin experience).
• Participate in the full software development lifecycle: requirements gathering, architecture, coding, testing, and deployment.
• Work with Agile teams, contributing to sprint planning, code reviews, and technical discussions.
• Implement infrastructure components using Terraform and collaborate on CI/CD automation.
• Build and maintain integrations using technologies like Kafka and GraphQL Federation.
• Work with Kubernetes for deployment, scaling, and application management.
• Apply strong testing practices, including unit, integration, and TDD/Shift-Left methodology.
• Collaborate with cross-functional teams, share knowledge, and mentor junior engineers.

What We’re Looking For

Mandatory Requirements:

• 5+ years of experience in software development with a focus on Java backend development.
• Experienced with Kotlin.
• Strong understanding of OOP principles and design patterns.
• Experience with Terraform.
• Solid experience with unit tests, integration tests, and TDD.
• Proficiency with Git and CI/CD pipelines.
• Knowledge of Kafka.
• Experience with Kubernetes.
• Experience with GraphQL Federation.
• Knowledge of AWS or Azure Cloud.
• Strong analytical and problem-solving skills.
• Excellent communication and teamwork abilities.

Nice to Have:

• Experience with Spring Boot or similar JVM backend frameworks.
• Background working in Agile teams.