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C Software Engineer – Linux/UNIX System Interface (Cyber Security)

BlackBelt Technology
Security Engineer • On-site • Full-time • 📍 Budapest
📄 View original listing (EN)

A BlackBelt multinational team is looking for a Software Engineer with strong C development and Linux/UNIX system-interface expertise to contribute to critical authentication infrastructure projects, focusing on Kerberos-based systems and low-level security solutions.

Stack

jiraLinuxPerlPython

Responsibilities

  • ▹Design, develop and maintain C-based applications in Linux/UNIX environments
  • ▹Work with system-level interfaces (POSIX APIs, processes, file systems, sockets)
  • ▹Develop and enhance Kerberos authentication systems and related tooling
  • ▹Maintain and improve internal implementations of open-source technologies such as OpenSSH
  • ▹Monitor performance, debug and optimize low-level system components
  • ▹Build automation tools to streamline administrative and operational processes
  • ▹Improve and maintain CI/CD and deployment automation pipelines
  • ▹Collaborate with engineers, product owners and stakeholders on authentication strategies

Requirements

  • ▹Strong proficiency in the C programming language
  • ▹Deep understanding of Linux/UNIX system programming and system interfaces
  • ▹Solid experience in network programming
  • ▹Good knowledge of security concepts (authentication, authorization, cryptography)
  • ▹Experience working in controlled enterprise environments
  • ▹Practical experience with Perl and Python
  • ▹Strong attention to detail and good organizational skills
  • ▹Ability to communicate complex technical topics clearly
  • ▹Strong teamwork skills in a distributed environment

Nice to have

  • ▹Experience working in an Agile environment using tools such as Jira
  • ▹Experience contributing to UNIX/Linux-based open-source projects

Soft skills

Strong attention to detailGood organizational skillsClear communication of complex technical topicsStrong teamwork in a distributed environment

What we offer

  • ▹BlackBelt team of technology professionals
  • ▹Support for growth with trainings and certifications
  • ▹Diversity – option to switch between projects and Delivery Units
  • ▹WOW (Wellbeing Office Way) health and well-being program
  • ▹Supportive, caring organisation