Senior Software Developer

Responsibilities

• Implement robust, well-tested C# .NET services following clean architecture principles
• Contribute to service boundary design, asynchronous messaging flows, and worker processes
• Build and maintain backend ingestion flows for high-volume sensor data
• Write clean, well-tested code with strong unit and integration coverage
• Support frontend engineers with clean API contracts and contribute to CI/CD pipelines

Requirements

• 5+ years of commercial C# .NET experience
• Experience with distributed systems, async patterns, and event-driven architecture
• Experience building data ingestion or processing pipelines
• Strong PostgreSQL skills including schema design and efficient queries
• Strong testing culture with unit and integration testing expertise
• Familiarity with AWS deployment and monitoring
• Experience with modular or service-oriented architectures
• Self-directed contractor mindset with ability to deliver independently

Preferred Qualifications

• Exposure to React or TypeScript

About the Company

ONYX Insight is a growing technology and engineering organisation in the renewable energy sector. Our vision is to build a more efficient future by becoming the world’s most innovative provider of predictive technology solutions for wind turbines.