[Job - 28457] Master Backend Engineer (C# / .NET)
- Ciandt
- Remote Brazil
Job Description
Key Responsibilities:
Design, build, and evolve highly scalable backend microservices and integrations using .NET 8/9 and ASP.NET Core within a CQRS + Clean Architecture ecosystem.
Own end-to-end technical solutions, making design decisions and trade-offs across performance, scalability, resilience, and cost.
Develop and optimise RESTful APIs (command/query separation) and event-driven systems via Azure Service Bus, ensuring high throughput and reliability.
Implement and maintain asynchronous and background processing using Azure Functions and message-driven patterns.
Lead data design and performance optimisation in Azure SQL / EF Core, including indexing strategies, query tuning, and transactional consistency.
Establish and promote engineering standards, reusable patterns, and shared components across services.
Apply advanced security practices using Azure Entra ID (OAuth2/OIDC, JWT) and secure-by-design principles.
Contribute to and improve CI/CD pipelines (Azure DevOps) and containerised deployments (Azure Container Apps).
Drive observability and production excellence using Application Insights and OpenTelemetry, defining logs, metrics, and traces.
Lead troubleshooting and incident resolution, performing root-cause analysis in distributed systems.
Collaborate across teams, influencing technical direction and ensuring alignment with architectural standards.
Actively contribute to design reviews, architecture discussions, and knowledge sharing, raising the overall engineering bar.
Required Skills and Qualifications:
Expert-level experience with C# and .NET (preferably .NET 8/9, ASP.NET Core) in production environments
Strong experience designing and operating distributed systems and microservices architectures
Deep understanding of event-driven systems (Azure Service Bus or similar) and asynchronous processing
Advanced knowledge of Azure SQL and Entity Framework Core, including performance tuning and data modelling
Strong experience with Clean Architecture, CQRS, and domain-driven design (DDD)
Solid understanding of concurrency, threading, memory management, and performance optimisation in .NET
Experience with containerisation (Docker) and cloud-native deployments
Hands-on experience with CI/CD (Azure DevOps) and modern DevOps practices
Strong experience with observability (Application Insights, OpenTelemetry) and production diagnostics
Proven ability to debug complex distributed systems and resolve performance issues
Strong communication skills and ability to influence technical decisions
Advanced English
Proactive ownership of complex problems and commitment to continuous improvement.
Strong communication skills with both technical and non-technical stakeholders.
Ability to navigate ambiguity and make pragmatic technical decisions.
Collaborative mindset with a focus on raising team standards and shared outcomes.
Resilient and adaptable in high-scale, production-critical environments.
Nice-to-have Skills:
Experience working across modern microservices and legacy .NET systems.
