Senior or Staff Java/Kotlin Developer - Remote Portugal

HumanIT Digital Consulting; Lisboa; A distancia; EUR 70.000 - 110.000; Jornada completa

Descripción de la vacante

HumanIT Digital Consulting is seeking a Senior or Staff Java/Kotlin Developer for a fully remote role from Portugal. You will design, implement and maintain backend microservices using Java (and Kotlin) in a cloud-native environment, leveraging Spring Boot, Kafka, Terraform, Kubernetes, and GraphQL Federation across Azure.

You'll contribute to scalable distributed systems, participate in architecture decisions, write production-grade code, and collaborate with cross-functional teams to deliver

Formación

• Proven backend development experience with Java (11+ / 17+ highly valued).
• Strong Kotlin development experience with idiomatic Kotlin code.
• Experience building microservices with Spring Boot and modern JVM stack.

Conocimientos

Java

Kotlin

Spring Boot

Descripción del empleo

Senior or Staff Java/Kotlin Developer - Remote Portugal

Job Openings Senior or Staff Java/Kotlin Developer - Remote Portugal

About the job Senior or Staff Java/Kotlin Developer - Remote Portugal

ABOUT THE OPPORTUNITY

Join a global software engineering company working on cutting-edge distributed systems and cloud-native architectures serving international clients. Position for talented Backend Engineers to build scalable microservices using modern JVM languages, cloud infrastructure, and event-driven architectures. Operating with complete remote flexibility from anywhere in Portugal, you'll work with a sophisticated technology stack combining Java and Kotlin for backend development, Terraform for infrastructure as code, Kubernetes for container orchestration, and Kafka for event streaming. This role offers the opportunity to work with GraphQL Federation for API composition, deploy applications on Azure Cloud, and contribute to systems designed for scale, resilience, and performance. As part of a collaborative engineering culture, you'll participate in architectural decisions, write production-grade code following best practices, and work alongside talented professionals who value quality, innovation, and continuous learning while enjoying the benefits of full remote work and competitive compensation.

PROJECT & CONTEXT

You'll design, develop, and maintain backend microservices using both Java (preferably newer versions like Java 17+) and Kotlin within a cloud-native environment. Your work will involve building event-driven architectures using Apache Kafka for real-time data streaming and asynchronous communication between services, implementing GraphQL Federation for unified API layer across distributed microservices, and leveraging Spring Boot for rapid application development with enterprise-grade features. Operating on Azure Cloud, you'll manage infrastructure using Terraform for declarative infrastructure provisioning and version control, deploy and orchestrate containerized applications on Kubernetes ensuring high availability and scalability, and implement CI/CD pipelines using GitHub for version control and automated deployments. The role requires understanding distributed systems principles, designing APIs that serve various client applications, writing comprehensive tests to ensure code quality and reliability, and participating in code reviews to maintain engineering excellence. You'll collaborate with cross-functional teams including frontend developers, DevOps engineers, and product managers to deliver features aligned with business objectives while ensuring system performance, security, and maintainability across the full development lifecycle.

WHAT WE'RE LOOKING FOR (Required)

• Java Proficiency: Strong hands-on experience with Java for backend development (experience with newer versions like Java 11+ or Java 17+ is highly valued)
• Kotlin Expertise: Solid practical experience developing applications with Kotlin, understanding Kotlin-specific features and idioms
• Spring Boot: Proven experience building micro