Senior Software Engineer (remote-only, Europe)
CloudLinux
Senior Software Engineer
CloudLinux is a global remote-first company. We are driven by our principles: do the right thing, employees first, we are remote first, and we deliver high-volume, low-cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure we all are successful.
Imunify360 Security Suite is a product of CloudLinux. It is an innovative security solution designed specifically for shared and VPS/Dedicated servers. The automated, easy-to-use solution with the six-layer approach to security delivers comprehensive and complete attack prevention.
We are seeking an experienced Senior Software Engineer for the Imunify360 IDS/IPS team. The team is responsible for Imunify360's web traffic security layer — the system that intercepts, classifies, and acts on every request before it reaches a web server. We work at the intersection of Linux networking, WAF engineering, and high-performance systems. Every engineer on the team owns features end-to-end — from product spec through implementation and production validation. There's no backlog of tickets to execute. There are problems to solve and outcomes to own.
The IDS/IPS team sits at the critical path of every web request Imunify360 handles. You'll work on hard, high-stakes problems — traffic classification, protocol-level enforcement, WAF evolution, performance at hosting scale — where the decisions you make affect millions of sites. The work is technically deep and product-relevant. You'll be expected to understand not just how to build something, but why it matters and what success looks like.
We work AI-natively. That means using AI tools throughout the full engineering cycle: brainstorming approaches, writing specs, reviewing design decisions, generating and validating code. We expect every engineer to know how to get the most out of these tools — not as a shortcut, but as a force multiplier that lets one person deliver what used to take a team.
If you're used to picking up tickets and closing them, this role isn't a fit.
If you're used to owning outcomes and using every tool available to deliver them — including AI — we'd like to talk!
Key responsibilities include:
- Own features end-to-end: define the problem, shape the solution, ship it, validate it works
- Architect server-side systems with a strong focus on performance, correctness, and operational simplicity
- Write behaviour specs before implementation — define what "done" looks like in machine-verifiable terms before generating a line of code
- Lead design and code reviews that raise the technical bar across the team
- Identify and drive improvements to team processes, tooling, and engineering practices
- Conduct root cause analysis on complex production issues — go deep, fix the right thing
£60k - £110k per year
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