Igor Seletskiy

Founder and Chief Executive Officer TuxCare (a Cloud Linux Software, Inc. trade name)

Last Reviewed: September 18, 2026

Executive Summary

Igor Seletskiy founded and runs Cloud Linux Software, Inc., a company that operates under two public identities: CloudLinux, the name it carries in the web hosting market, and TuxCare, the brand for its enterprise Linux patching and extended lifecycle support business. The company’s whole proposition rests on a structural tension in Linux operations, which is that the security fixes everyone agrees are necessary carry an operational cost almost nobody wants to pay, in the form of reboots, maintenance windows, and forced version upgrades. Seletskiy’s answer has been to sell away that cost: KernelCare applies kernel security patches to a running system without a restart, and TuxCare’s extended lifecycle support keeps distributions and language runtimes patched for years after their upstream maintainers have stopped. The software now runs on more than half a million servers for over 4,000 customers, and Seletskiy was also the driving force behind the AlmaLinux OS Foundation, the independent body that emerged when Red Hat changed the terms of CentOS and left a large part of the enterprise Linux world without a free downstream rebuild.

Career Highlights

• Founder and Chief Executive Officer of CloudLinux, which reports over 500,000 servers running its software, more than 4,000 customers including Liquid Web, 1&1, and Dell, over 100 data centre partners, and more than 250 employees worldwide.
• Created KernelCare, which delivers Linux kernel security updates to running systems without a reboot, and Imunify360, the automated security suite for Linux web servers.
• Launched TuxCare as the brand consolidating the company’s enterprise patching and extended lifecycle support offerings for software past its end of life.
• Drove the creation of the AlmaLinux OS Foundation, establishing it as a community-governed nonprofit rather than a vendor-owned project.
• Won the 2025 Gold award for Chief Executive Officer of the Year at the Cybersecurity Excellence Awards, for TuxCare.
• Named a 2024 Most Influential CEO by CEO Monthly.
• A regular speaker at hosting and security industry events including CloudFest, and a frequent voice in the security trade press.

Professional Journey

Seletskiy’s career has been spent in the same overlapping territory of Linux, web hosting, and security for more than two decades, and CloudLinux is the vehicle he built for it. The company started from a specific and unglamorous problem: shared hosting providers run hundreds or thousands of customer accounts on a single machine, and a single badly behaved account can degrade or take down everyone else on it. CloudLinux OS was engineered to fence tenants off from each other with hard resource limits, which turned an operator’s recurring firefight into a configuration setting. That product gave the company its base in the hosting market.

From there the product line expanded along a consistent logic, each addition taking an operational burden off the customer’s hands. Imunify360 automated the detection and remediation of the malware, exploits, and compromised accounts that plague shared web servers. KernelCare attacked the reboot problem directly, applying kernel security patches to a live system so operators no longer had to choose between patching promptly and keeping uptime commitments. Around these sit ImunifyAV for malware scanning, Radar for vulnerability scanning, and AccelerateWP for WordPress performance.

The enterprise business grew out of that patching capability and eventually needed its own name. TuxCare was launched as the brand bringing the enterprise products together, and its central offering is extended, and in the company’s framing endless, lifecycle support: continuing to supply security patches for Linux distributions, shared libraries, and language runtimes after their upstream maintainers have declared them end of life. This matters to organisations, including government agencies and universities, that cannot migrate a production estate on the upstream community’s schedule. Legally the company consolidated too, with Cloud Linux, Inc. merging into Cloud Linux Software, Inc., which trades as TUXCARE and is registered in Palo Alto, California.

The episode that took Seletskiy beyond his own customer base came when Red Hat shifted CentOS from a downstream rebuild of Red Hat Enterprise Linux to the upstream CentOS Stream, removing at short notice the free, binary-compatible enterprise distribution that a large slice of the industry had standardised on. CloudLinux responded by sponsoring a replacement, and Seletskiy pushed for it to be handed to an independent, community-governed nonprofit rather than kept as a company asset. That became the AlmaLinux OS Foundation, and AlmaLinux is now one of the principal CentOS successors. It is the clearest example of the pattern running through his work, which is that the durability of open-source infrastructure is an operational problem with an institutional answer.

He remains chief executive, leading a team that includes Michael Canavan as chief revenue officer, Peter Bauert as chief operating officer, and David Mello as chief experience officer. External recognition has followed the enterprise pivot: he was named a Most Influential CEO by CEO Monthly in 2024, and took the Gold award for Chief Executive Officer of the Year at the 2025 Cybersecurity Excellence Awards. He speaks regularly at industry events such as CloudFest and serves on the advisory board of DevNetwork.

Education

No education could be established for Igor Seletskiy from any source consulted for this profile, including company material, award profiles, published interviews, and trade press. This is an explicit gap rather than an omission.