Specjalista ds. bezpieczeństwa Cloudflare

BlueBinary develops modern online services in the iGaming industry for its clients, handling over 100 million daily requests with a distributed, efficient infrastructure focused on scalability, security, and reliability.

• Minimum 2 years of practical experience with Cloudflare at Enterprise or Pro/Business level.
• Proficiency in configuring DDoS protection at Layer 7, including mitigation of HTTP flood, slowloris, and cache-busting attacks.
• Ability to write advanced WAF Custom Rules using Wirefilter expressions.
• Availability for on-call duty during critical incidents.
• Experience with Rate Limiting, both classic and Advanced.
• Knowledge of Cloudflare Bot Management or Bot Fight Mode.
• Deep understanding of the OSI model, HTTP/HTTPS protocols, and WebSocket.
• Analytical skills for log and network traffic analysis.
• Excellent knowledge of OWASP Top 10 security threats.
• English language proficiency at minimum B2 level for technical communication and documentation.

Nice to have:

• Cloudflare Accredited Configuration Engineer certification.
• Familiarity with Cloudflare Workers, R2 storage, and experience with Nginx.
• Experience with Node.js/Express.js and Docker.

• Comprehensive configuration and management of DDoS protection at layers L3/L4/L7.
• Creating and maintaining WAF rules to block malicious traffic, SQL injection, and XSS.
• Designing rate limiting and bot management strategies to protect APIs and payment endpoints.
• Managing Firewall Rules and Custom Rules including geoblocking, IP reputation, and ASN blocking.
• Optimizing caching settings (Cache Rules, Page Rules, Tiered Cache) for performance and security.
• Managing DNS infrastructure, proxy settings, and SSL/TLS configurations.
• Monitoring and deeply analyzing security logs (Security Analytics, Security Events).
• Responding to security incidents and attacks in real time.
• Close cooperation with the backend team to secure new functionalities and endpoints.