Senior Backend .NET Engineer

United ITS is expanding its aviation software engineering team.

We build high-reliability software systems supporting aviation operations, airspace control, and training environments.

We are seeking a Senior Backend .NET Core Engineer to own and architect the integration layer powering real-time operational systems.

This role is responsible for backend architecture, system integration, API gateway design, and ensuring reliable communication between control platforms and external engines.

Key Responsibilities

• Design and implement scalable ASP.NET Core APIs
• Architect and implement Microservices-based backend systems
• Design and manage API Gateway layers for secure and scalable service exposure
• Develop real-time communication layers (REST, WebSocket, event-driven patterns)
• Own integration services and command/event processing pipelines
• Design data models and optimize performance using PostgreSQL and PostGIS
• Ensure thread safety, concurrency control, and high-availability architecture
• Collaborate closely with frontend, desktop, DevOps, and infrastructure teams

Required Qualifications

• 4+ years of experience with .NET / ASP.NET Core
• Strong experience with Microservices architecture and distributed systems
• Hands-on experience with API Gateway design and implementation
• Strong expertise in PostgreSQL, including performance tuning
• Experience working with PostGIS for spatial or geospatial data handling is highly preferred
• Deep understanding of async programming, multithreading, and concurrency control
• Experience designing integration layers or middleware systems
• Solid knowledge of API security, authentication (JWT/OAuth2), and system architecture patterns
• Experience working with mission-critical or real-time systems is highly preferred