Senior Kernel Support Engineer

🔥 1 minute ago

🌐 Poland, Romania, +3 more countries – Remote

🇵🇱 Poland – Remote 🇷🇴 Romania – Remote 🇨🇿 Czechia – Remote 🇧🇷 Brazil – Remote 🇦🇷 Argentina – Remote

⏰ Full Time

🟠 Senior

📞 Support Engineer

👻 Ghost score 21%

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TuxCare

WebsiteLinkedInAll Job Openings

51 - 200 employees

🔒 Cybersecurity

☁️ SaaS

🤝 B2B

Cybersecurity • SaaS • B2B

TuxCare is a cybersecurity company that provides enterprise-grade open source supply chain security, long-term lifecycle support, and non-disruptive patching for Linux and language ecosystems. Its products include SecureChain (rebuilt, malware-scanned, continuously patched open-source packages), KernelCare (rebootless kernel patching), LibCare (rebootless patching for OpenSSL and glibc), and Endless Lifecycle Support (ELS) for operating systems, runtimes, and language ecosystems. TuxCare also offers enterprise support for community Linux distributions, custom kernel development, compliance-focused tooling (SBOM, VEX, SLSA attestations), and solutions aimed at healthcare, finance, government, and other regulated sectors.

📋 Description

• Analyze crashes, hangs, and reboots related to live patching, including oops and panic logs, vmcore with the crash tool, and KASAN reports • Determine whether live patching caused an incident and communicate the conclusion to the customer • Investigate patching problems, including apply failures, stuck transitions, unknown symbols, and freeze conflicts with backup tools • Investigate missing patches and new kernel or distribution support requests • Work with the patch team to add kernel and distribution support • Answer deep CVE questions by checking patch sources and documentation • Identify root causes and provide clear reports to the patch team • Follow investigations through to resolution • Act as the named engineer for an enterprise customer during Sev 1 incidents and own cases until closure • Assist during major CVE events • Participate in the team's Sev 1 on-call rotation; 24/7 on-call is a contract obligation

🎯 Requirements

• Strong knowledge of Linux kernel internals, including memory management (MM), VFS, networking, scheduling, and locking mechanisms • Hands-on experience with Linux kernel crash analysis, including crash, vmcore analysis, and kernel oops decoding • Good C programming skills, with ability to read and analyze Linux kernel code and patches to identify root causes • Experience working with vendor security advisories (RHSA, USN, DSA) and kernel changelogs, including Git history • Experience handling critical production incidents and technical escalations for enterprise customers • Ability to communicate complex technical issues and investigation progress clearly • Excellent written English communication skills • Familiarity with Linux live patching technologies (kpatch, livepatch, ksplice) • Experience with virtualization and container technologies, including Proxmox, KVM, OpenVZ, LVE, and cgroups • Experience using Python and shell scripting for automation, troubleshooting, and log analysis • Familiarity with AI/LLM tools for debugging and technical investigations • Experience in Site Reliability Engineering (SRE)

🏖️ Benefits

• A focus on professional development • Interesting and challenging projects • Fully remote work with flexible working hours, allowing you to schedule your day and work from any location worldwide • Paid 24 days of vacation per year • 10 days of national holidays • Unlimited sick leave • Compensation for private medical insurance • Co-working reimbursement • Gym/sports reimbursement • Budget for education • Opportunity to receive a reward for the most innovative idea that the company can patent

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