Senior Software Engineer (Linux)

Luxoft; Kraków; On-site; PLN 180,000 - 320,000; Full time

Job summary

Luxoft is seeking an experienced Linux Platform Engineer for Kraków to own end-to-end Linux-based device development. You will serve as the escalation point for complex customer issues, drive fixes, and contribute to platform improvements across kernel, networking, and userspace components.

You will collaborate with software engineers, create diagnostic tools, and help shape product design while delivering robust, scalable software for enterprise customers.

Qualifications

• 5+ years of hands-on experience with Linux-based embedded platforms.
• Deep knowledge of Linux kernel internals, systemd, device drivers, IPC (D-Bus, gRPC, ZeroMQ, Unix sockets).
• Proficiency in C, C++ (C++17), Python, and shell scripting; read and debug code across system layers.
• Broad knowledge across the Linux stack: kernel, drivers, networking, userspace frameworks.
• Experience with debugging tools: strace, ltrace, gdb, perf, ftrace, tcpdump/Wireshark, journalctl.

Responsibilities

• Lead and participate in design and development of next generation products.
• Translate system architecture and requirements into software components.
• Review system design and interfaces; provide technical feedback.

Skills

Linux embedded

Kernel internals

C/C++/Python

Debugging tools

Networking basics

Communication

Enterprise customer work

Tools

Yocto/Buildroot

Git workflows

Job description

Project description

This role is for an experienced Linux Platform Engineer who thrives on solving complex, ambiguous technical problems across the full system stack. You will be the engineering point of contact for critical customer escalations on our next-generation Linux-based devices, including cameras, microphone pods, switches, and other peripherals. Beyond reactive support, you will drive proactive improvements, develop proof-of-concept solutions, and contribute to feature development that prevents future issues.This is not recipe-based technical support. You will operate as a full-stack systems engineer, hunting down root causes in kernel logs, network traces, audio pipelines, and video subsystems. You will propose and implement fixes, collaborate with product engineering teams, and ensure our enterprise customers have world-class experiences. You will be responsible for overall system design and development efforts. You will be responsible for optimizing core aspects of the software that are critical to product design and experience.

Responsibilities

• Lead and participate in the design, and development of our next generation Products.
• Work closely with a team of software engineers to translate overall system architecture and product requirements into well-designed and implemented software components.
• Participate and conduct technical reviews of system design and interface requirements and provide technical feedback and make recommendations.
• Serve as the primary engineering escalation point for complex customer issues on Linux-based CollabOS devices, performing deep technical triage and root cause analysis.
• Develop fixes, workarounds, and patches for identified issues, coordinating with platform teams to ensure proper integration into mainline releases.
• Create diagnostic tools, scripts, and documentation that improve the efficiency of future troubleshooting efforts.
• Drive proof-of-concept development and feature work as capacity allows, contributing to platform improvements informed by real-world customer feedback.
• Analyze device telemetry and logs to identify patterns, predict issues, and propose systemic improvements.
• Build and maintain knowledge bases and escalation procedures that capture tribal knowledge and enable faster resolution times.

SKILLS

Must have

• You have 5+ years of hands-on experience with Linux based embedded platforms.
• You have deep knowledge of Linux platform internals: kernel, systemd, device drivers, and IPC mechanisms (D-Bus, gRPC, ZeroMQ, Unix sockets).
• You possess strong proficiency in C, C++ (C++17), Python, and shell scripting, with the ability to read and debug code across system layers.
• You have broad knowledge across the Linux system stack, including kernel internals, device drivers, networking subsystems, and userspace frameworks.
• You are experienced with debugging tools and techniques: strace, ltrace, gdb, perf, ftrace, tcpdump/Wireshark, journalctl, and similar utilities.
• You have a basic understanding of the TLS protocol and networking layers.
• You communicate effectively with both technical and non-technical stakeholders, translating complex issues into clear explanations and actionable recommendations.
• You are comfortable working directly with enterprise customers and partner engineering teams when needed.

Nice to have

• Linux platform build systems (Yocto, Buildroot) and Git workflows
• You have working knowledge of networking protocols and enterprise networking concepts (802.1x, RADIUS, certificates, proxies, VLANs) and are familiar with Network troubleshooting and protocol analysis (Wireshark, tcpdump, 802.1x)
• You understand video conferencing technologies: codecs, WebRTC, SRTP, SIP, or similar protocols.
• You have a good understanding of DRM/KMS display subsystems and V4L2 camera frameworks
• USB stack debugging