Danil Lobanov | C#/.NET Game Backend Engineer

01. About

C#/.NET backend engineer with production experience in online game server architecture, including server-authoritative logic, matchmaking pipelines, and distributed orchestration across microservices.

I design resilient systems with observability and operations in mind: latency/throughput metrics, queue depth monitoring, structured logging, CI/CD rollbacks, and zero-downtime service evolution.

4+ Years Exp.

60% Queue Time Down

80%+ Test Coverage

4x Throughput Gain

02. Experience

Appfox

Oct 2025 - Present

Senior Game Backend Engineer

Stack: C#, .NET 8, ASP.NET Core, PostgreSQL, EF Core, Redis, RabbitMQ, MassTransit, Kafka, SignalR, Docker, Kubernetes, CQRS, MediatR, GitLab CI/CD

Engineered a hybrid matchmaking service (Redis in-memory + PostgreSQL fallback) and reduced queue time by 60% while handling thousands of concurrent players under auto-scaling.
Redesigned CombatSimulator using CQRS (MediatR) and stateless processing, increasing system throughput by 4x with zero infrastructure changes.
Replaced HTTP polling with SignalR real-time channels and reduced game traffic by 40% while improving reliability.
Implemented UserLifecycleOrchestrator with MassTransit Saga across Identity, Gateway, Combat, and Inventory microservices.
Orchestrated services in Kubernetes with Helm and built GitLab CI/CD pipelines with automated rollback for zero-downtime deployments.

Valletta Software

Mar 2023 - Oct 2025

.NET Backend Engineer - CRM Systems

Stack: C#, .NET 6/8, ASP.NET Core, PostgreSQL, EF Core, RabbitMQ, MassTransit, Redis, CQRS, MediatR, Docker, GitHub Actions, xUnit, Moq, NSubstitute

Built and maintained backend services for a B2B recruitment CRM on .NET 6/8, focused on candidate management, notification pipelines, and analytics.
Designed an asynchronous notification microservice with RabbitMQ, MassTransit, SMTP, and Telegram integrations.
Optimized PostgreSQL plus Redis for reporting workloads and improved service reliability via tests and GitHub Actions CI/CD.

Empire Of Bloom

Sep 2021 - Feb 2023

.NET Backend Engineer - IoT Smart Agricultural Container System

Stack: C#, .NET, MQTT, Modbus RTU, gRPC, RabbitMQ, PostgreSQL, Docker, Azure IoT Hub, Kafka, CQRS

Developed C#/.NET microservices for an IoT container management platform, handling task scheduling, real-time sensor monitoring, and reporting over MQTT/Modbus.
Implemented RabbitMQ + MassTransit asynchronous processing with PostgreSQL and Redis optimization.
Improved monitoring latency and report generation while hardening the system with automated tests and GitHub Actions CI/CD.