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Backend Software Engineer (C#) @ SquareOne
  • Warsaw
Backend Software Engineer (C#) @ SquareOne
Warszawa, Warsaw, Masovian Voivodeship, Polska
SquareOne
27. 1. 2026
Informacje o stanowisku

We are seeking a highly skilled Backend Software Engineer specializing in C# to maintain and optimize the "engine" of Tenable Identity Exposure. This role is centered on our most critical layer: the data ingestion and analysis engine. Working within a sophisticated codebase that utilizes a unique semi-functional programming style, you will be a key player in ensuring that complex identity data is processed with the highest levels of reliability and efficiency. This position requires not only technical depth but also the professional maturity to engage directly with enterprise customers to resolve complex, real-world security challenges.

This is a hybrid role based in Warsaw or Kraków, requiring 2–3 days per week on-site.


  • 4+ years of experience in Backend development with a focus on C#.
  • Strong analytical and mathematical thinking, suited for a semi-functional code environment.
  • Full English Profi ciency: Essential for clear communication during live support sessions and collaboration with international teams.
  • Experience with Active Directory, LDAP, or Cloud Identity providers – A signifi cant advantage.

We are seeking a highly skilled Backend Software Engineer specializing in C# to maintain and optimize the "engine" of Tenable Identity Exposure. This role is centered on our most critical layer: the data ingestion and analysis engine. Working within a sophisticated codebase that utilizes a unique semi-functional programming style, you will be a key player in ensuring that complex identity data is processed with the highest levels of reliability and efficiency. This position requires not only technical depth but also the professional maturity to engage directly with enterprise customers to resolve complex, real-world security challenges.

This is a hybrid role based in Warsaw or Kraków, requiring 2–3 days per week on-site.

,[Full ownership of C# services handling high-scale data ingestion and real-time security analysis., Working with a complex, semi-functional codebase, ensuring code quality and correctness of security detections., Diagnosing and resolving customer issues, participating in live troubleshooting sessions., Developing ad-hoc improvements and tailored solutions to meet customer architectural needs and maintain product excellence. Requirements: C#, .NET, Analytical skills, Active Directory, LDAP, Cloud Identity Providers

  • Praca Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


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