Signalling Security Specialist

<p>About the Role</p> <p>As a <strong>Telecom Signalling Security Analyst</strong>, you will combine customer-facing delivery with hands-on technical execution in sensitive telecom environments.</p> <p>You will:</p> <ul> <li>Support and operate P1 Security solutions in production contexts (notably <strong>PTM</strong> and <strong>VKB</strong>).</li> <li>Conduct <strong>signalling security audits</strong> using proprietary tooling (notably <strong>PTA</strong>) and deliver rigorous, professional reports and presentations to customers.</li> </ul> <p>This is a profile-focused role: we are looking for someone who can cover both audit delivery and operational support.</p> <p>Our teams are remote-first, with a preference for candidates who can overlap working hours with Central European Time.</p> <h2>Tasks</h2> <p>Key Responsibilities</p> <ul> <li><p><strong>Customer delivery & communication</strong></p> </li> <li><p>Act as a technical point of contact for customers: scoping, updates, and delivery.</p> </li> <li><p>Deliver presentations, training, and debrief sessions.</p> </li> <li><p><strong>Signalling Security Audits (PTA)</strong></p> </li> <li><p>Contribute to audit scoping (objectives, perimeter, constraints, timelines, deliverables).</p> </li> <li><p>Prepare safe execution plans and operational safeguards.</p> </li> <li><p>Execute signalling security audits using <strong>PTA</strong> and associated tooling in a controlled manner.</p> </li> <li><p>Analyze results, validate findings, and assess exploitability/root cause.</p> </li> <li><p>Draft professional technical reports in English and present findings to customers.</p> </li> <li><p><strong>PTM operations & IT support (ticket management)</strong></p> </li> <li><p>Provide IT support for the PTM IDS in the context of customer ticket workflows.</p> </li> <li><p>Troubleshoot and maintain PTM deployments, including Linux and virtualization layers.</p> </li> <li><p>Operate and improve day-to-day tooling/scripts used for investigations, maintenance, and deployments.</p> </li> <li><p><strong>Collaboration & continuous improvement</strong></p> </li> <li><p>Work closely with Engineering and R&D to improve tooling, detection quality, and operational processes.</p> </li> <li><p>Maintain clear internal documentation and handover notes.</p> </li> </ul> <h2>Requirements</h2> <p>Required Skills & Qualifications</p> <ul> <li><p><strong>Technical writing (English)</strong>: ability to draft professional, structured technical reports and slide decks</p> </li> <li><p><strong>Client communication</strong>: strong verbal communication skills for presenting and interacting directly with customers.</p> </li> <li><p><strong>Telecom core & roaming security</strong>: solid understanding of telecom core architecture, roaming concepts, and where signalling security fits in real operator environments.</p> </li> <li><p><strong>Signalling protocols & call flows (hands-on)</strong>: ability to read and reason about SS7/SIGTRAN, Diameter, LTE/IMS and GTP-C call flows, and connect traces/observations to concrete security findings.</p> </li> <li><p><strong>Standards-driv