.NET Lead

Tryzens Limited is a fast growing IT solutions consultancy based in the City of London with offices in Bulgaria, India, Australia and United States. Our areas of expertise include delivery of eCommerce solutions, multi-channel retail solutions and project management amongst others. We provide best of breed solutions and services to several blue chip clients primarily within retail, financial services and other industries.

We have built our delivery focused reputation upon technical innovation, in-depth business knowledge, and creative vision, all of which supports our objective of helping clients to gain true value from eCommerce. We love what we do and our clients love our work.

We are seeking a .NET Technical Lead with a strong background in building scalable, high-performance .NET systems and leading development teams. The ideal candidate will combine deep technical expertise in Azure cloud services, microservices architecture, and complex transactional systems with proven leadership skills in mentoring developers, driving architectural decisions, and owning delivery quality. Experience with wine, alcohol, or collectibles trading platforms is highly desirable, along with a strong understanding of integration with external data providers and event-driven messaging systems.

• Lead the design development, and maintenance of high-performance microservices using .NET 8.0+ and Azure Functions v4 (isolated worker model), spanning Cellar Services, Market Valuation, and Exchange domains
• Own architectural decisions for the platform, including service decomposition, API design, data modelling, and handler-based vertical slice architecture patterns
• Architect and oversee integrations with external APIs and data providers (Wine-Searcher, Liv-ex, Adobe Commerce, Algolia) using Refit-based typed HTTP clients with delegating handlers for authentication
• Design and optimise event-driven workflows using Azure Service Bus topics and subscriptions for notifications, auto-matching, and asynchronous processing
• Collaborate with product managers, UI/UX designers, QA teams, and cloud engineering to deliver high-quality solutions across multiple environments (dev, QA, UAT, production)
• Drive platform scalability, maintainability, and performance through clean architecture, resilience patterns (Polly retry/circuit breaker policies), and Redis caching strategies
• Lead and mentor a team of .NET developers, establishing engineering standards, conducting code reviews, and fostering a culture of technical excellence through Architecture Decision Records (ADRs) and comprehensive documentation
• Champion testing strategy and code quality, including unit, integration, and API tests using Postman, xUnit, and NSubstitute
• Define and enforce CI/CD pipeline standards using Azure Dev Ops YAML pipelines, including multi-stage build, test, and deployment workflows across dev, QA, UAT, and production environments
• Collaborate on infrastructure-as-code practices using Azure Bicep templates for environment provisioning, including Function Apps, SQL Database, Redis Cache, Service Bus, and Key Vault
• Own the observability strategy including Application Insights, Open Telemetry, Serilog structured logging, and health check endpoints
• Design and maintain Blazor Server applications (Admin UI / Support Hub) for internal administration and support tooling

• Integration Testing
• Unit Testing
• CI/CD
• Redis
• Clean Architecture
• Microservices
• Blazor
• Azure Dev Ops
• SQL databases

English