Full Stack Engineer – Cloud & On‑Premise Systems

About the role

We are looking for a Full Stack Engineer to design, build and evolve a distributed system that spans on‑premises Windows services, cloud‑hosted APIs, real‑time communication and multi‑tenant data platforms.

Key responsibilities

• Design and implement features for both the on‑premise Agent layer and cloud tiers.
• Contribute to architectural decisions such as versioning, modularity, backward compatibility and deployment strategies.
• Develop real‑time communication using SignalR (WebSockets) and gRPC with bidirectional streaming.
• Implement resilient connectivity patterns, including retry policies, reconnection strategies and durable messaging.
• Manage multi‑tenant data access with SQL Server and Entity Framework Core.
• Own the Windows Service lifecycle and support WPF‑based desktop management tools.
• Build secure, production‑grade APIs using JWT, RBAC and mutual TLS (mTLS).
• Implement observability and reliability practices (OpenTelemetry, structured logging, Sentry, health checks).
• Contribute to frontend development with Next.js for real‑time dashboards and configuration portals.
• Integrate with third‑party e‑commerce platforms such as Salla and Shopify.
• Design event‑driven patterns, CQRS, webhook processing, idempotent handlers and rate‑limiting strategies.
• Optimize performance using memory‑efficient techniques like Span, pooling and efficient serialization.
• Work with Azure services (Azure SQL, Azure Identity, Azure DevOps) where applicable.
• Apply ERP domain knowledge (invoicing, inventory, orders) when building business modules.
• Follow Clean Architecture and SOLID principles with strong testing practices.

Required profile

• 3+ years of professional experience with C# and modern .NET (6/7/8).
• Strong expertise in ASP.NET Core, SignalR and gRPC.
• Deep understanding of asynchronous and concurrent programming.
• Solid experience with SQL Server, Entity Framework Core and multi‑tenant SaaS architecture.
• Experience developing Windows Services and WPF applications.
• Knowledge of authentication, authorization and certificate‑based security (JWT, RBAC, mTLS).
• Familiarity with Azure cloud services and ERP business domains.
• Proven ability to write clean, testable code following Clean Architecture and SOLID.

Required skills

• C#
• .NET 6/7/8
• ASP.NET Core
• SignalR
• gRPC
• SQL Server
• Entity Framework Core
• WPF
• Windows Services
• JWT, RBAC, mutual TLS
• OpenTelemetry, Sentry
• Next.js
• Azure SQL, Azure Identity, Azure DevOps
• CQRS, webhook processing
• Span, memory pooling, serialization
• Testing frameworks