we are looking for

Senior Backend Software Engineer (C#) Remote Full-time

Our Customer:

A global product company in the cybersecurity domain, focused on helping organizations identify and reduce identity-based risks across modern IT environments.

Your tasks:

  • Own and maintain backend services written in C# that power high-scale data ingestion and real-time security analysis
  • Work with a complex codebase utilizing semi-functional programming principles to ensure reliability and correctness of security detections
  • Analyze and resolve complex technical issues, including deep debugging of multi-threaded systems
  • Participate in live troubleshooting sessions with enterprise customers, providing hands-on technical support
  • Implement improvements and custom solutions tailored to specific customer environments and architectural needs
  • Continuously optimize system performance for high-throughput data processing

Required experience and skills:

  • 5+ years of backend development experience with strong focus on C# and .NET ecosystem
  • Solid expertise in building and maintaining high-load, scalable backend systems
  • Strong debugging skills in complex, multi-threaded environments
  • Understanding of functional programming concepts (immutability, pure functions, etc.) or willingness to work in such paradigms
  • Experience with identity systems such as Active Directory, LDAP, or cloud identity providers (e.g., Azure AD / Entra ID)
  • Experience with performance optimization of data processing systems
  • Ability to communicate directly with customers and lead technical discussions
  • Strong analytical thinking and problem-solving skills
  • Upper-Intermediate+ English (for direct communication with global clients)

Would be a plus:

  • Background in cybersecurity or security-focused products
  • Experience working with enterprise-level, customer-facing support scenarios
  • Familiarity with distributed systems and real-time data processing architectures

Working conditions

5-day working week, 8-hour working day, flexible schedule

5-day working week, 8-hour working day;

Work from home with coffee

Remote work.

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