Programmer III (Senior .NET Developer)
Purpose of the Role
We are looking for a .NET Developer (Programmer III) to drive the architecture, design, and delivery of enterprise-scale systems using .NET 8–10 technologies.
This is a technical role where you will influence engineering standards, guide solution design, mentor developers, and lead modernisation initiatives across the platform.
Role Description
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Develop and maintain source code (C#, .NET 8+ (aligned to .NET 9/10 roadmap)), solution architecture and system design for large-scale enterprise applications
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Drive adoption of modern engineering practices:
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Microservices & event-driven architectures
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API-first design and integration patterns
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Cloud-native and distributed systems
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Own and guide application performance, scalability, and reliability
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Oversee SQL Server architecture, optimisation, and high-volume data processing
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Lead modernisation initiatives - .NET 8/9/10
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Guide team members on CI/CD, DevOps practices, and automation (build, test, deploy)
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Ensure effective monitoring, logging, and observability practices
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Conduct code reviews, enforce standards, and drive engineering excellence
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Mentor and develop Software Engineers (I & II)
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Collaborate with Architects, Product Owners, and Business stakeholders to deliver scalable solutions
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Ensure delivery aligned to SDLC governance, Agile practices, and engineering standards
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Identify risks and proactively drive technical mitigation strategies
Qualifications and Experience
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7+ years’ software development experience in enterprise environments
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Expert-level C# and .NET 8+ (exposure to .NET 9/10 advantageous)
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Strong experience in system design, architecture, and integration patterns
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Advanced SQL Server skills (performance tuning, indexing, query optimisation)
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Proven technical leadership and mentoring experience
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Strong stakeholder engagement with ability to translate business needs into technical solutions
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Solid understanding of:
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OOP, SOLID principles
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Clean Architecture / layered design
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API design and distributed systems
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Experience using AI-assisted development tools, such as:
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GitHub Copilot / Visual Studio IntelliCode
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Amazon CodeWhisperer or AWS AI services
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Claude or similar AI assistants
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Practical use of AI to improve productivity, code quality, and delivery
Desirable
- Cloud experience: Azure (preferred) or AWS
- Event-driven architecture (e.g. Service Bus, Kafka)
- Containerisation: Docker, Kubernetes (AKS preferred)
- CI/CD pipelines (Azure DevOps, GitHub Actions)
- Observability tools (Application Insights, OpenTelemetry)
- Experience in high-volume, retail, or transactional systems
- Exposure to DDD or CQRS patterns
- Experience integrating AI capabilities into applications (APIs, automation, copilots)
Desired Skills:
- Senior
- Net
- Software
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