Job Description
Profectus is seeking multiple experienced Senior C#/.NET Software Engineers to support application development and sustainment within an Australian Government agency. You will work across the full stack of application development within a small team, building and maintaining web applications and custom internal applications in a Microsoft environment. The work covers solution design, coding, database development, release and deployment, and Level 3 support of production applications.
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Key Responsibilities
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Design and develop scalable applications using C# and .NET Framework/.NET Core
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Build and maintain web applications using ASP.NET MVC, Web API and up-to-date front end technologies
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Create and maintain database solutions using SQL Server, Entity Framework and related data technologies
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Develop responsive user interfaces using HTML5, CSS3 and JavaScript
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Maintain deployment procedures, code repositories and CI/CD pipelines
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Write clean, maintainable and well documented code aligned to established coding standards
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Participate in code reviews and provide feedback to other developers
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Optimise application performance and address scalability requirements
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Work with testing teams to confirm quality before release
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Provide technical guidance and mentoring to junior developers
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Debug and resolve software defects and performance issues
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Maintain and enhance existing applications based on user feedback and business requirements
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Monitor application performance using logging and monitoring tools and implement improvements
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Document technical specifications and maintain system documentation
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Required Experience
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5+ years of commercial C# development experience
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Strong proficiency with .NET Framework 4.5+ and/or .NET Core/.NET 5+
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Experience with ASP.NET MVC, Web API and web application development
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Solid understanding of object oriented programming principles and design patterns
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SQL Server experience covering database design and complex query development
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HTML5, CSS3, JavaScript and at least one modern JavaScript framework
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Experience with DevOps practices, source control and CI/CD pipelines
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Ability to take technical responsibility across all stages of software development and to plan and drive development activities
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Experience planning and delivering release packages, including risk assessment, post release review and rollback
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Experience delivering systems integration between applications and building continuous integration capability
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Desirable Experience
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Experience designing complex applications, components and modules, including alternative design options and trade offs
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Experience taking technical responsibility for configuration development and deployment
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Ability to advise on and select development methods and tools in line with agreed standards
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Awareness of emerging technologies and their impact on an organisation
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Previous experience delivering within an Australian Government agency
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Security Clearance Requirements
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Must be an Australian Citizen
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Must be able to obtain a Negative Vetting Level 1 (NV1) clearance
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An active NV1 clearance is preferred
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Working Arrangements
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Hybrid
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Canberra
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Why Profectus
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Profectus partners with Australian Government agencies to deliver trusted ICT capability across complex delivery programs. We take a long term, relationship driven approach, supporting our people across the full lifecycle of their engagement while contributing to outcomes of national importance.

📌 Senior C#.Net Software Engineer (Canberra)
🏢 Profectus
📍 Canberra