Software Engineer

Salt is currently hiring a Software Engineer for a client of ours in Amsterdam.Role is paying 103 euros an hour and you require kvk/zzp. This is a 12 month contract with 1 or 2 days a week on site.We are looking for a Software Engineer II to design, build, and maintain scalable, reliable software solutions. In this role, you will develop high-quality applications, contribute to system design, improve service reliability, and collaborate with cross-functional teams to deliver business-critical features. You will take ownership of services throughout their lifecycle, from development and testing to deployment, monitoring, and production support.Key ResponsibilitiesDesign, develop, test, and maintain high-quality software and APIs.Write clean, maintainable, and well-tested code, with a focus on continuous improvement and refactoring.Own services end-to-end, including deployment, monitoring, troubleshooting, and production support.Participate in incident response, root cause analysis, and implementation of long-term reliability improvements.Collaborate with engineers, product managers, and stakeholders to design scalable technical solutions.Contribute to architectural decisions, automation, and engineering best practices.Support continuous delivery and ensure secure, reliable, and observable systems.Participate in an on-call rotation as required.Required Skills & ExperienceBachelor's degree in Computer Science or a related field (or equivalent experience).Strong experience with Java (17+), Maven, Spring or Dropwizard, and REST APIs.Experience with Kubernetes, AWS (EKS, S3), GitLab CI/CD, and deployment automation tools.Strong understanding of API design, OpenAPI specifications, and API lifecycle management.Experience with unit and integration testing in CI/CD pipelines.Familiarity with observability tools such as Grafana, Loki, OpenTelemetry, and distributed tracing.Experience with canary deployments and modern cloud-native architectures.Nice to HaveExperience with GraphQL.Knowledge of developer documentation, SDKs, and Swagger.Understanding of testing strategies, security best practices, and data modelling.Familiarity with Perl for reading and maintaining legacy code.What You'll Help DeliverImprove service maturity through automated testing and engineering best practices.Scale services while maintaining high availability and reliability.Support the migration of legacy consumers to modern API-based integrations with minimal disruption.