Senior Software Engineer – Java (f/m/x)

JavaSpring BootMongoDBMySQLKafkaAWSDockerKubernetesSwaggerREST APISoapEdiSftpAmazon SQSGraalvm

Work Type

Hybrid

Job Type

Full Time

Location

Berlin

Salary

Not specified

Responsibilities

Design, develop, and operate backend microservices using Java and Spring Boot following Domain-Driven Design and clean architecture principles
Build event-driven pipelines using Kafka and SQS to ingest, normalise, and distribute high-volume carrier-tracking events
Integrate new carriers across REST, SOAP, EDI, and SFTP designing resilient clients for third-party APIs
Design efficient scalable data models in MongoDB and MySQL
Deploy and operate containerised services on Kubernetes (AWS, Datadog, Prometheus)
Write well-tested contract-first code
Actively contribute to design discussions code reviews and agile ceremonies

5+ years of backend development experience
Strong proficiency in Java and Spring Boot / Spring ecosystem
Solid experience with microservices and event-driven architectures (Kafka, SQS, or equivalent)
Contract-first API development with OpenAPI
Hands-on knowledge of NoSQL (MongoDB) and relational (MySQL) databases including data modelling and performance tuning
Strong grasp of Domain-Driven Design and software architecture
Proven experience integrating third-party APIs and designing for resilience against unreliable upstreams
Production experience with Docker, Kubernetes, and cloud-native AWS environments
Familiarity with GraalVM native images is a plus
Familiarity with Vue and TypeScript is a plus

Senior Software Engineer – Java (f/m/x)

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