Location: Cairo/Maadi (On-site) Company: Paycore Solutions About Us: Paycore is a leading Fintech company building proprietary core banking technologies. We are detail-oriented, paranoid about security, and operate with a "zero-trust" mindset. We are looking for a hands-on technical leader to own our infrastructure security and compliance roadmap. The Role: We are not looking for a maintenance guy; we are looking for a builder. You will be the guardian of our infrastructure, ensuring our proprietary Python-based core banking system is impenetrable and fully compliant with PCI-DSS standards. Key Responsibilities (The Real Test):PCI-DSS Guardianship: Lead the implementation and maintenance of PCI-DSS v4.0 compliance from the ground up (Network, Data, Policy). Infrastructure Ownership: Manage our on-premise Data Center (Dell Power Edge Servers, HSMs) and secure connectivity (Microwave/Fiber/VPNs). Security Architecture: Design and enforce secure network segmentation (VLANs, Firewalls) using Enterprise-grade equipment (Huawei/Cisco). Disaster Recovery: Architect and test "real-world" DR scenarios to ensure business continuity. Requirements (Must Haves):Experience: 7+ years in System Engineering, with at least 3 years in a Fintech or Banking environment. Compliance: Proven track record of passing PCI-DSS audits. You must know the difference between "compliant" and "secure". Tech Stack: Deep expertise in Linux (Hardening), Python (reading code to audit security), and Database Security. Hardware: Hands-on experience with Enterprise Routers (Huawei/Cisco) and HSM integration. Mindset: You think like a hacker to defend like a fortress. You trust nothing and verify everything.