Senior C# Engineer

Domain: Cloud Security / Exposure & Vulnerability Management

We are looking for a Senior Backend Engineer with strong C# expertise to join a team working on a complex, high-impact product in the cybersecurity domain.

The role focuses on maintaining and improving core backend services responsible for data ingestion and analysis, as well as ensuring system stability and supporting customers in real-time troubleshooting scenarios.

Responsibilities

• Maintain and improve C# services responsible for data ingestion and analysis
• Work with a large, complex, long-running codebase
• Investigate and resolve production issues and customer-reported bugs
• Participate in live troubleshooting sessions with customers
• Collaborate with cross-functional teams to deliver targeted improvements
• Ensure system stability and performance across both cloud (SaaS) and on-premise environments

Requirements

• 6+ years of professional experience in software development
• Strong expertise in C#
• Experience working with large-scale, complex systems
• Ability to work with long-lived codebases
• Familiarity with semi-functional programming patterns
• Experience supporting production systems and troubleshooting issues
• Strong communication skills and ability to work directly with customers
• Full English proficiency

Nice to Have

• General infrastructure understanding
• Experience working with hybrid environments (cloud + on-premise)
• Familiarity with security-related domains (optional, not required)

Tech Stack

• Backend: C#, Microsoft SQL Server
• Data Layer: TypeScript
• API: Node.js (Hapi.js), GraphQL
• Frontend: React.js, MobX