Security Engineer – Node.js, Proactive Defense

🕒 July 21

🇵🇱 Poland – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

👮‍♂️ Cybersecurity / Security Engineer

👻 Ghost score 13%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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CloudLinux

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2009

☁️ SaaS

🔐 Security

🌐 Web 3

SaaS • Security • Web 3

CloudLinux is a leading provider of operating systems designed specifically for web hosting environments. The company offers a line of products including CloudLinux OS Legacy, CloudLinux OS Shared Pro, and CloudLinux OS Solo, each tailored to improve server stability, security, and performance. With features such as kernel live patching, advanced automation and monitoring tools, and specialized WordPress optimization, CloudLinux helps hosting companies maximize security and profitability while ensuring stable server environments. Over 4,000 companies trust CloudLinux to power millions of websites worldwide, benefitting from increased stability and reduced churn rates. The company emphasizes compatibility with major hosting control panels and CentOS, offering solutions for shared hosts, agencies, and small businesses.

📋 Description

• Build that runtime protection layer end-to-end. • Define the product — what we intercept, what we don't, what the customer-visible surface looks like. • Determine the technical approach — instrumentation strategy, deployment shape, programming language — all open. • Implement the product, end to end, using the full tooling stack provided. • Establish your methodology for building conviction in your detection logic. • Utilize cross-layer signal from existing stack to help with threat intelligence and detection.

🎯 Requirements

• Familiarity with the Node.js runtime and the JavaScript ecosystem. • Strong web application security fundamentals and current knowledge of practical exploitation. • A working sense of how detection rules behave at scale — what catches attackers without flagging the long tail of legitimate code. • Ability to start as the PM, architect, lead engineer, and QA for this product. You ask for resources or help when you need them; you don't wait to be told what to do. • Comfort directing AI coding agents to high-quality output — most of our engineering does this now. • Prior work on runtime-protection products, application firewalls, or instrumentation tooling. • Background in malware analysis or incident response. • Familiarity with managed-hosting environments. • Public security research, vulnerability disclosures, or detection rulesets you've authored.

🏖️ Benefits

• A focus on professional development. • Interesting and challenging projects. • Fully remote work with flexible working hours, that allows you to schedule your day and work from any location worldwide. • 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.