Senior .
NET Developer (Technical Lead) Melbourne (Laverton) Contract Opportunity Defence & Secure Technology Environment About the Organisation Our client is a leading global technology and consulting organisation delivering critical solutions across government and highly secure environments.
They support large-scale technology programs that require robust engineering practices, operational excellence, and strict security compliance.
About the Role We are seeking an experienced Senior .
NET Developer (Technical Lead) to lead application sustainment, enhancement, and support activities for a suite of mission-critical engineering applications operating within a highly secure environment.
This role is ideal for a hands-on technical leader who enjoys solving complex technical issues, driving application improvements, and ensuring the ongoing reliability, security, and compliance of enterprise systems.
Key ResponsibilitiesLead Level 3 and Level 4 application support activities, including code-level troubleshooting and root cause analysis.Design and deliver major application enhancements within a structured Waterfall development methodology.Maintain application security accreditation and configuration in line with Information Security Manual (ISM) requirements.Coordinate end-to-end software releases, ensuring appropriate testing, approval, and deployment controls are followed.Manage high-priority incidents and provide timely resolution of critical production issues.Maintain and update technical documentation,



including architecture and system design artefacts.Provide technical leadership and guidance across application lifecycle activities.Required Skills & ExperienceStrong expertise in.NET Framework,.
NET Core, and C# development.Extensive experience supporting and developing enterprise applications in Microsoft technology environments.Strong knowledge of IIS and Windows Server-based web application hosting.Proven experience across the full Software Development Lifecycle (SDLC).
Demonstrated experience working within structured Waterfall delivery frameworks.Excellent problem-solving, troubleshooting, and stakeholder engagement skills.Experience supporting business-critical systems in secure or regulated environments.Mandatory RequirementsActive AGSVA NV1 Security Clearance is essential.Ability to work full-time onsite in Laverton, Melbourne.Australian Citizenship required due to the security-cleared nature of the environment.What's on Offer?
Opportunity to work on mission-critical technology platforms.Engage in complex technical challenges within a highly secure environment.Join a cooperative team of experienced technology professionals.Long-term contract potential within a major transformation and sustainment program.How to Apply If you are a security-cleared Senior .
NET Developer with strong technical leadership experience and a passion for delivering reliable enterprise solutions, we'd love to hear from you.
Contact: Farbar Siddiq

📌 .Net Technical Lead (Melbourne)
🏢 Whizdom
📍 Melbourne