[Hiring] Principal Software Engineer @Cloudlinux

Role Description

We are seeking an experienced Principal 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 HTTP 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.

What You'll Work On:

• The IDS/IPS team sits at the critical path of every web request Imunify360 handles.
• Work on hard, high-stakes problems — traffic classification, protocol-level enforcement, WAF evolution, performance at hosting scale.
• Understand not just how to build something, but why it matters and what success looks like.

How We Work:

• We work AI-natively, using AI tools throughout the full engineering cycle.
• Every engineer is expected to know how to get the most out of these tools as a force multiplier.
• If you're used to owning outcomes and using every tool available to deliver them — including AI — we'd like to talk.

Key Responsibilities:

• 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.

Qualifications

• 8 years of progressive experience in software development.
• Fluency with AI-assisted development workflows.
• Go — strong, production-proven proficiency; this is your primary language.
• Hands-on experience with Linux in production environments (CentOS, Debian, or similar), particularly with the network stack.
• Experience with BDD or similar behaviour-driven approaches to defining and validating software.
• Product mindset: you think in outcomes, not in tasks.

Requirements

• Python, C, or Rust — familiarity or working experience is a strong plus.
• Knowledge of network and web security (WAF, IDS/IPS, traffic analysis).
• Experience building AI-powered features or integrating ML into production systems.
• Familiarity with hosting environments (cPanel, Plesk, nginx, Apache).

Benefits

• A focus on professional development.
• Interesting and challenging projects.
• Fully remote work with flexible working hours.
• Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leaves.
• Compensation for private medical insurance.
• Co-working and gym/sports reimbursement.
• Budget for education.
• The opportunity to receive a reward for the most innovative idea that the company can patent.