Linux Hacker & Nix Wizard (Senior / Expert)

Remote
- Kraków, Kielce, Małopolskie, Poland
Tooling Space

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.

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Current recruitment process: For the purpose of recruitment, I hereby give consent as per art. 6.1.a of the GDPR to processing of my personal data (other than that listed in art. 22 [1] § 1 Labour Code) by Virtus Lab Sp. z o. o. (as Co-Controller for a full list of joint controllers, see Privacy Policy) with its headquarters at Szlak 49 Street, 31-153 Cracow. At the same time I accept the Privacy Policy of the Data Controller. I acknowledge that my personal data will be kept for the duration of the recruitment process and as regards any potential claims, for the period of 36 months maximum, and that I have the right to access this data or have it rectified or deleted on demand. This consent can be withdrawn at any time, but this withdrawal does not make the previous processing illegal*.

Future recruitment processes: I hereby give consent as per art. 6.1.a of the GDPR to the processing of my personal data by Virtus Lab Sp. z o. o. (as Co-Controller for a full list of joint controllers, see Privacy Policy) with its headquarters at Szlak 49 Street, 31-153 Cracow, in order to use this data in future recruitment processes. I hereby agree to possible storage of my personal data for this purpose in Virtus Lab’s database for a period of 36 months maximum. At the same time I accept the Privacy Policy of the Data Controller. I acknowledge that I have the right to access this data or have it rectified or deleted on demand. This consent can be withdrawn at any point, but this does not make the previous processing illegal*.

Linux Hacker & Nix Wizard (Senior / Expert)

Job description

Job requirements

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