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Feel IT Services Logo Feel IT Services · IT - Software Development

C# Backend Developer

Romania; Moldova, Iasi · Job Posted January 29, 2026
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Job Description

We are seeking a highly skilled and experienced C# Backend Developer to join our team, focusing on building and maintaining high-scale, performance-critical services. You will work on a platform that is an immersive 3D virtual environment designed for high-engagement corporate use cases, including virtual events, training, and the digital workplace. The ideal candidate will have a deep understanding of modern software architecture, database management, and deployment practices, with a strong commitment to quality and security.

Job Responsibility

  • Design, develop, and maintain robust, scalable backend services and Microservices primarily using C# (.NET 6/7/8)
  • Implement solutions for real-time communication (e.g., SignalR, WebSockets) to support multiplayer or high-frequency data synchronization scenarios
  • Design and optimize relational and NoSQL database schemas to ensure high performance and scalability
  • Apply best practices for high-scale systems, including caching, load balancing, and advanced performance tuning
  • Ensure API quality by designing and documenting clean, maintainable interfaces (gRPC, REST) and implementing strong testing practices
  • Utilize Docker and Kubernetes for service deployment and contribute to CI/CD pipeline management
  • Integrate and manage messaging/queueing systems such as Azure Service Bus, RabbitMQ, or Redis Pub/Sub
  • Enforce security best practices and maintain comprehensive monitoring and tracing solutions (e.g., Application Insights, OpenTelemetry)

Requirements

  • Strong proficiency in C# with deep knowledge of the .NET ecosystem
  • Proven hands-on experience with Microservices architectures
  • Proficiency with real-time communication protocols, specifically SignalR or WebSockets
  • Deep expertise in Relational and NoSQL Databases and performance optimization
  • Experience building and maintaining high-scale systems (caching, load balancing)
  • Solid understanding of security best practices (authentication, authorization, rate limiting)
  • Experience with Docker and container orchestration (Kubernetes preferred)
  • Ability to deploy and maintain services in on-premise environments (networking, firewalls)
  • Strong ability to design and document APIs using gRPC or REST

Nice to have

  • Knowledge of Node.js (TypeScript)
  • Experience with Azure services (Functions, AKS, App Service, Cosmos DB, Service Bus)
  • Experience with Firebase (Auth, Firestore, Cloud Functions)

What we offer

  • Competitive salary based on experience
  • Supportive working climate with flexible work practices
  • Lunch tickets
  • Coffee, fruits and other goodies at the office
  • Sport facilities
  • Company-sponsored events
  • Travelling opportunities in some project areas
  • Career development opportunities (certifications / trainings / conferences)
  • Feel IT referral bonus
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