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Senior .NET Developer
- Posted25 November 2025
- Salary$180000 - $190000 per annum
- LocationSydney
- Job type Permanent
- Expertise Sirius Technology
- ReferenceBH-65121
Job Description
Senior .NET Developer | Cloud Engineering | Australia
Join a high-performing engineering team delivering scalable, cloud-native platforms for complex and high-traffic environments. We’re seeking a Senior .NET Developer who loves solving tough problems, shipping great code, and continually improving systems.
What you’ll do
Apply now or reach out for a confidential discussion.
Join a high-performing engineering team delivering scalable, cloud-native platforms for complex and high-traffic environments. We’re seeking a Senior .NET Developer who loves solving tough problems, shipping great code, and continually improving systems.
What you’ll do
- Build and optimise high-performance .NET Core applications and distributed services
- Contribute to cloud infrastructure and deployment pipelines using AWS services and infrastructure-as-code tools
- Work with event-driven and streaming architectures across services such as AWS Lambda, MSK Connect, Flink, Neptune & Athena
- Take features end-to-end—design, implementation, testing, deployment and monitoring
- Ramp up quickly on existing systems and deliver meaningful improvements early on
- Solid track record of shipping production software in complex systems
- Ability to work autonomously and collaborate effectively within cross-functional teams
- Strong problem-solving skills with the ability to navigate ambiguity
- Growth mindset—comfortable learning new AWS services and tools as needed
- Customer-centric approach to product and technical decisions
- Strong experience with C#, .NET Core & RESTful APIs
- Experience with cloud environments (AWS preferred) and IaC tools like CloudFormation/Terraform
- CI/CD pipeline knowledge (GitHub Actions, TeamCity or similar)
- Good understanding of relational and document databases: Aurora, Postgres, SQL Server, DocumentDB
- Solid software engineering principles: OOP, clean architecture, SOLID
- Networking fundamentals; Linux & Windows environments
- Experience with data/streaming tools such as Glue, Kinesis, EMR, Firehose
- Exposure to observability tooling (Grafana/Prometheus)
Apply now or reach out for a confidential discussion.