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Mid-Level C# / AWS Software Engineer

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Randstad

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Location:
Australia , Melbourne

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided
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Job Description:

Join a well-known Australian retail organisation building and operating cloud-native services across order management, loyalty, vouchers, wallet integrations, and customer services. You'll work on a serverless platform where reliability, observability, and clean engineering practice are genuinely valued. This is a hands-on role with real ownership from design through to production deployment.

Job Responsibility:

  • Designing and building production-grade C#/.NET services on AWS serverless infrastructure
  • Developing REST APIs, event-driven flows, and integration patterns across retail and enterprise systems
  • Improving existing order, loyalty, voucher, and customer integration services
  • Diagnosing production issues using CloudWatch logs, metrics, alarms, and traces
  • Contributing to architecture discussions and constructively challenging designs
  • Writing well-tested, maintainable code with clear separation of concerns
  • Helping mentor junior engineers through code reviews, pairing, and technical guidance
  • Documenting patterns, runbooks, and decisions for long-term maintainability

Requirements:

  • Strong C# skills with .NET 8+, ASP.NET Core, async patterns, and background processing
  • Solid REST API development including OpenAPI, authentication/authorisation, validation, and error handling
  • Hands-on AWS serverless experience across Lambda, API Gateway, DynamoDB, SQS, EventBridge, S3, and CloudWatch
  • Infrastructure as code using AWS SAM or CloudFormation with CI/CD pipeline experience
  • Database proficiency across PostgreSQL and DynamoDB including indexing and query tuning
  • Experience with event-driven design, retries, dead-letter queues, and external system integration
  • Unit, integration, and contract-style testing with testable architecture
  • Azure DevOps or GitHub pipelines for build and release automation
  • Engineering judgement to balance delivery, reliability, maintainability, and operational complexity

Nice to have:

  • Background in retail, loyalty, e-commerce, or order management platforms
  • Familiarity with SAP Commerce Cloud / Hybris integrations
  • Experience with Cognito, OAuth/OIDC, or private API patterns
  • DynamoDB Streams, EventBridge Pipes, or Step Functions
  • OpenSearch or search/indexing experience
  • Blazor Hybrid / MAUI or front-end frameworks such as Vue or React

Additional Information:

Job Posted:
May 17, 2026

Expiration:
June 12, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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