Security Engineer - Vulnerability Response (Imunify360)

CloudLinux Inc.; United States; Remote; USD 150,000 - 210,000; Full time

Benefits offered by this job

Remote work

Vacation 24 days per year

National holidays 10 days

Medical insurance

Gym/sports reimbursement

Budget for education

Innovation reward

Job summary

CloudLinux Inc. ищет опытного Lead Security Engineer — Vulnerability Response для нашей Web Protection команды.

Вы будете проектировать и внедрять конвейер на основе ИИ, который выявляет новые критические уязвимости, формирует правила WAF и выпускает обновления в короткие сроки. Вы расширите существующий конвейер WordPress-плагина на ModSecurity/Coraza, будете писать правила и обучать аналитиков, измерять время до защиты и точность срабатываний.

Qualifications

• 5+ лет в веб/приложенной безопасности: исследование уязвимостей, инженерия обнаружения, инженерия WAF или похоже.
• Глубокое понимание классов атак в вебе (SQLi, XSS, RCE, обход аутентификации, traversal, загрузка файлов, десериализация) и как их детектировать в HTTP-трафике.
• Опыт написания правил WAF (ModSecurity/SecLang, OWASP CRS) и регулярных выражений.
• Умение читать PHP-код и понимать уязвимость по advisories/patch diff.
• Сильный Python: сборка авто-матики в продакшене.
• CI/CD и автоматическое тестирование.
• Опыт использования AI/LLM инструментов и умение проверять их вывод.
• Доказанный опыт ведения технических проектов от начала до конца.
• Продуктовый подход: фокус на влияние на клиента, не только на корректность.
• Уровень английского не ниже upper-intermediate.
• Опыт в безопасности WordPress-экосистемы: плагины, источники уязвимостей (Wordfence, Patchstack, WPScan), CVE-бюллетени.
• Coraza или другие WAF движки.
• Аналитика эксплойтов или фон threat intelligence.
• Linux серверная администрация, хостинг индустрия.
• Ответственность и ясность в коммуникациях.
• Умение принимать решения в условиях неполной информации.

Responsibilities

• Разработка и построение AI-драйвенного пайплайна от раскрытия до анонса: intake уязвимостей, triage, черновики правил, тестирование, релиз, публичное advisory.
• Ведущая разработка расширения существующего WordPress-пайплайна на ModSecurity/Coraza правила.
• Написание и обзор правил WAF (ModSecurity/SecLang) для реальных уязвимостей.
• Создание тестовых сред для проверки правил против эксплойтов и реального трафика перед релизом.
• Лидерство и наставничество аналитиков: расстановка приоритетов, удаление блокеров.
• Определение и отслеживание времени до защиты, покрытия и ложных срабатываний, их улучшение.
• Автоматизация формирования advisory как часть пайплайна, согласование формата и процесса ревью с маркетингом.

Skills

WAF инженерия

Python автоматизация

CI/CD

AI/LLM инструменты

Threat intelligence

WordPress безопасность

ModSecurity/SecLang

Coraza

Linux сервер админ

Regex

Tools

ModSecurity/SecLang

OWASP CRS

WordPress

Job description

Описание:

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. Check out our website for more information: cloudlinux.com

Imunify360 Security Suite 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 looking for a Lead Security Engineer - Vulnerability Response to join our Web Protection Team.

The challenge ahead

When a critical vulnerability in a popular web application or WordPress plugin goes public, attackers start exploiting it within hours. Most site owners can't patch that fast. We want our customers protected before the first attack reaches them, and we want them to know it.

• AI-driven vulnerability response. Build and run a pipeline that detects new high and critical vulnerabilities, generates WAF rules with AI assistance, validates them, and ships them to production in a short window.
• Protection plus public announcement, both automated. The same pipeline that ships the rule also produces the public advisory.
• Build on what works. An AI-assisted pipeline already runs for our WordPress protection plugin.
• Speed without breaking sites. On shared hosting, a rule that blocks legitimate traffic is a customer incident.
• Make it measurable. Time-to-protection, coverage of critical vulnerabilities, and false-positive rate are the numbers this role owns.

Задачи:

• Design and build the AI-driven pipeline from disclosure to announcement: vulnerability intake, triage, rule drafting, testing, release, and the public advisory.
• Lead the extension of our existing WordPress-plugin pipeline to ModSecurity/Coraza rules.
• Write and review WAF rules (ModSecurity/SecLang) for real-world web vulnerabilities.
• Build test harnesses that check rules against exploits and real traffic before release.
• Lead and mentor security analysts: set priorities, review their work, remove blockers.
• Define and track time-to-protection, coverage, and false-positive rate, and improve them.
• Automate advisory generation as part of the pipeline, and agree the format and review flow with marketing.

Требования:

• 5+ years in web/application security: vulnerability research, detection engineering, WAF engineering, or similar.
• Deep understanding of web attack classes (SQLi, XSS, RCE, auth bypass, path traversal, file upload, deserialization) and how to detect them in HTTP traffic.
• Hands-on experience writing WAF rules (ModSecurity/SecLang, OWASP CRS, or similar) and regular expressions.
• Able to read PHP code and understand a vulnerability from an advisory or a patch diff.
• Strong Python: you've built automation pipelines that run in production.
• CI/CD and automated testing.
• Hands-on daily use of AI/LLM tools; you know where to trust them and how to verify their output.
• Proven track record of leading a technical project end to end.
• Product mindset: you reason about customer impact, not only technical correctness.
• Upper-intermediate English or better.
• WordPress ecosystem security: plugin vulnerabilities, vulnerability feeds (Wordfence, Patchstack, WPScan), CVE credits or bug bounty.
• Coraza or other WAF engines.
• Exploit analysis or threat intelligence background.
• Linux server administration, hosting industry.
• Strong ownership: you take a goal, not a task list.
• See the whole process and find the bottleneck, not only fix individual issues.
• Communicate clearly and raise risks early.
• Calm under pressure: critical vulnerabilities don't wait for working hours.
• Comfortable making decisions with incomplete information.

Условия:

• 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.