Mid-Senior Low-Level Engineer (C/C++)

Warsaw, Poland


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The Infrastructure department is responsible for influencing and tracking change, providing frontline support, and delivering software-defined solutions. 

Our low-level engineering team is a newly formed team created to tackle more sophisticated and profound optimization challenges on multiple fronts - from optimization of memory management on kernel modules to research and development-related tasks focused on bringing better performant solutions to our customers.

Main Responsibilities

  • Create clean, maintainable, performant, and tested code in C, C++, and/or Rust;
  • Solve difficult problems in security, performance, and privacy, networking at scale;
  • Leave the code better than you found it.

Core Requirements

  • Experience (and love) for debugging to ensure that everything works in all cases;
  • Solid knowledge of development in Linux-based environments;
  • Experience with C/C++ development in memory-sensitive environments;
  • Advanced knowledge of the Linux kernel architecture;
  • Desire to learn and improve;
  • Don't worry if you don't tick all the boxes, we would still be interested in hearing from you!

Bonus Points for

  • Experience in Kernel modules development on Linux-based systems;
  • Experience with memory-leak related debugging on the kernel level;
  • Experience with network kernel libraries such as wireguard and netfilter modules.

Tools You Will Use

  • C/C++ and any IDE of your choice;
  • Bash;
  • Linux-based VMs and containers;
  • Git-based automation tools.

Salary Range

  • Gross Salary 19753 - 32857 PLN/month

After you apply

Our recruitment process differs depending on specific positions and/or hiring teams. However, it tends to include the following three main stages and usually doesn’t exceed any more than five steps.

Step 1.

Get to know

The goal of the first step is to get to know each other better. So during that, we talk more about the role and ask you to share your story.

Step 2.

Technical evaluation

We test each applicant's technical knowledge and problem-solving ability through various assessments.

Step 3.

Meet the team

The final step is for you to meet the team, discuss your task, and dig deeper into the role you’re applying for. If everyone’s happy with the result, the closing step will be the offer.

We Offer

Apply now


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Nord Security is a world-leading cybersecurity solutions provider. We aim to shape a more trusted and peaceful online future for people everywhere. To achieve this goal, we’ve built a like-minded community of over 1000 cybersecurity and tech experts driven by Nord values. And we’re always looking to expand our team of: