We are looking for a .NET Developer for a platform built on a microservice-based backend architecture. The system handles real-time communication, geospatial calculations, media processing, and integrations with multiple external services.The backend is developed using .NET 7, C# 11, and follows Clean Architecture and Domain-Driven Design (DDD) principles.

What will need to do:

— Design, develop, and maintain backend microservices using ASP.NET Core (.NET 7)

— Implement business logic following Clean Architecture and DDD

— Work with PostgreSQL/PostGIS for complex data models and geospatial queries

— Build and optimize real-time communication features using SignalR

— Develop and maintain background jobs using Hangfire

— Integrate external services (OAuth providers, payment systems, media services, notifications)

— Optimize performance, scalability, and database queries

— Ensure application security following OWASP Top 10

— Participate in code reviews, refactoring, and architectural discussions

— Collaborate closely with product and frontend teams

Our expectations:

— 3+ years of experience with .NET 7 and C# 11

— 1+ years of experience with EF Core 7 (migrations, DbContextFactory, DbContextPool, compiled models)

— Deep understanding of ASP.NET Core, Web API, Middleware, Dependency Injection

— Advanced use of LINQ, async/await, and asynchronous programming

— Experience with PostgreSQL

— Experience with microservices, high-load systems and real-time systems (SignalR or similar)

— Strong understanding of Redis (StackExchange.Redis, Sorted Sets, Lua scripts)

— Knowledge of DRY, SOLID, and KISS principles

— Analytical mindset and attention to detail

— English at a B1-B2 level, Russian at a B2 level

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It will be a plus:

— Media processing experience (ImageSharp, FFmpeg)

— AWS S3 or similar object storage

— Experience with payment integrations (Stripe, PayPal, Apple IAP, Google Play Billing)

— Firebase, Google Cloud Vision API

— Unit and integration testing (xUnit/NUnit, Moq/NSubstitute)

— Experience working with legacy codebases

— Experience with large-scale databases and long-lived projects

Why Join Us

At Mad Devs, you will be part of a company that values meticulous attention to detail, strategic thinking, and continuous improvement. You will work on meaningful projects alongside a talented and supportive team. By joining our team, you will have the opportunity to make a real impact, grow your career, and contribute to developing cutting-edge solutions in the world of quality assurance.