We're looking for a Senior Java Backend Engineer to join KWAN on projects where robust, scalable systems are the backbone of how modern companies operate. This is a Remote challenge for residents in Portugal.

You'll work on complex backend architectures built for real production environments: distributed systems, event-driven pipelines, cloud-native infrastructure, and APIs that teams across the business depend on every day. The environment is technical, collaborative, and built for engineers who take ownership of what they ship.

The Challenge:

• Design and build high-performance Java backend systems from architecture to production;
• Work with event-driven architectures using Kafka at scale;
• Manage and evolve cloud infrastructure on Azure with Terraform;
• Develop and maintain GraphQL Federation layers across distributed services;
• Orchestrate containerised workloads with Kubernetes;
• Champion testin...