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 Responsibilities

• Design, 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 & Experience

• Bachelor'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 Have

• Experience 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 Deliver

• Improve 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.