About the Role 

The Senior .NET Developer (Technical Lead) leads specialized Level 3 and Level 4 application sustainment and enhancement activities for a suite of secure engineering tools. This role is critical for maintaining mission-focused capabilities, resolving systemic failures, and ensuring compliance with the Information Security Manual (ISM).

Key Responsibilities 

• Lead Level 3 and 4 application support, involving code-level analysis, system patches, and root cause analysis for systemic failures.
• Design and develop Major Enhancements (30+ days effort) strictly adhering to a sequential Waterfall Solution Development Methodology.
• Maintain application security accreditation and configuration in accordance with ISM standards.
• Coordinate end-to-end releases, ensuring only successfully tested and authorized components are deployed into the live production environment.
• Manage high-priority (P1/P2) incidents within strict resolution timeframes (e.g., 4-hour resolution for P1).
• Maintain technical documentation, including Solution Architecture Documents (SAD) and System Design Documents (SDD).

Skills/Experience 

• Expert knowledge of .NET Framework, .NET Core, and C#.
• Deep experience with IIS and web application hosting in Windows Server environments.
• Extensive experience in the full software development lifecycle (SDLC) using Waterfall practices.

   

Mandatory Requirements

• Active AGSVA NV1 Clearance (Required for code-level access and production deployment).
• Must be able to work fulltime from Melbourne (Laverton)

WHO WE ARE 

Kirra Services is a leading provider of IT services and recruitment personnel, headquartered in Canberra, ACT. Award-winning winners of the Seek SARA 2025 Small Recruitment Company of the Year, we partner closely with a range of Federal Government agencies and are continuously seeking talented professionals to join our growing team.  

Kirra Services is proudly SupplyNation Certified and majority Indigenous-owned. We are committed to creating opportunities for all Australians and strongly encourage Aboriginal and Torres Strait Islander candidates to apply for all roles.