Linux Hacker & Nix Wizard (Senior / Expert)
Job description
We are #VLteam - tech enthusiasts constantly striving for growth. The team is our foundation, that's why we care the most about the friendly atmosphere, a lot of self-development opportunities and good working conditions (yes, that also means attractive salaries). Trust and autonomy are two essential qualities that drive our performance. We simply believe in the idea of “measuring outcomes, not hours”. Join us & see for yourself!
Job requirements
Linux Hacker & Nix Wizard
Details: Linux Hacker & Nix Wizard (Senior / Expert)
Required skills
Linux Core or Low-Level Linux Kernel Internals - Advanced
Nix - Advanced / Regular
Python Programming- Expert
English Communication: C1 - Advanced
System Architecture & Automation - Advanced
Self-driven & Problem Solving - Advanced
Desired professional profile & core competencies
Deep, hacker-level understanding of Linux internals, memory management, IPC, and system calls.
Expert-level mastery of Python (performance optimisation, async execution, C/Rust interop).
Hands-on expertise with Nix / NixOS or strong mastery of declarative system configuration & reproducible builds.
Advanced experience with low-level kernel diagnostics and profiling (eBPF, perf, strace, valgrind).
Fluent command of spoken and written English.
Uncompromising ownership, analytical rigour, and a natural instinct for deep technical problem-solving.
Advanced Linux internals, expert Python, Nix/NixOS, low-level kernel diagnostics (eBPF, perf, strace, valgrind), fluent English (C1), self-driven problem solving.
Key Responsibilities
- developing Linux systems
- automating system configuration
- optimizing performance
Skills & Tools
Linux, Nix, NixOS, Python, eBPF, perf, strace, valgrind
Job Details
- Category: Software Development
- Seniority: Senior Level
- Commitment: Full Time
- Workplace: Remote — Kraków or Kielce or Wrocław or Poland
- Languages: English
About VirtusLab
A tech company of enthusiasts focused on growth, friendly atmosphere, and self-development opportunities. — Industry: Information Technology