C# Microservices Software Engineer

Position Summary

This is a senior role, not junior or intermediate. You will be working on advanced microservices using the latest Microsoft technologies, including .NET 9, Azure, Ai, and modern architectural patterns.

The Senior C# Backend Developer is a specialist role focused on designing and building microservices using the Microsoft technology stack. This role is responsible for developing high-performance, scalable, and maintainable backend systems that power our enterprise SaaS platform. The developer will work across service boundaries, integrating systems through APIs, queues, and events, and must be comfortable working in a modern DevOps environment.

You will be a key contributor in shaping and delivering backend services that support multi-tenant microservices, real-time integrations, and advanced business logic.

Key Responsibilities

• Design and implement C# .NET backend services as part of a modern distributed microservices architecture
• Develop and maintain clean, well-tested code with a focus on performance, scalability, and reliability
• Build APIs (RESTful and event-driven) that integrate with both internal and external systems
• Use Azure services such as Azure Functions, Azure App Services, Azure Service Bus, and Azure SQL
• Work with modern patterns including CQRS, domain-driven design, and asynchronous messaging
• Participate in architecture discussions and make recommendations to improve systems
• Write and maintain unit, integration, and automated tests
• Debug, monitor, and troubleshoot distributed systems using tools like Application Insights and Serilog
• Collaborate with DevOps, frontend, and QA teams to ship high-quality software in sprint cycles
• Document key technical decisions, patterns, and system designs

General Responsibilities

• Represent Efficiency Leaders in a professional and ethical manner
• Promote our core values: value creation, sustainable outcomes, and ethical behaviour
• Contribute to a high-performance engineering culture focused on innovation and continuous improvement
• Uphold all responsibilities in the best interests of the company

Key Performance Indicators (KPIs)

• Timely delivery of production-ready, microservice-based features
• Code quality as measured by peer review, coverage, and automated analysis
• System reliability and performance (e.g. uptime, response time)
• Responsiveness to bugs and issues raised from testing or production
• Contribution to architectural improvements and team knowledge

Required Skills and Qualifications

• Bachelor’s degree in Computer Science, Software Engineering, or related field
• 5+ years of experience with .NET Core and C# in backend development
• Strong experience with microservices architecture and design patterns
• Deep knowledge of Azure cloud services (Service Bus, Functions, App Config, Key Vault, SQL)
• Proficiency in RESTful API development, asynchronous messaging, and event-driven systems
• Familiarity with DevOps practices, CI/CD pipelines, and infrastructure-as-code (e.g. Bicep)
• Strong problem-solving skills and ability to work independently on complex problems
• Experience working in agile development environments