Signalling Security Specialist
Employment Information
Report this job
Job expired or something wrong with this job?
Job Description
Telecom signalling security specialist auditing telecom networks with PTA and supporting PTM IDS deployments. Delivering customer reports, presentations, troubleshooting, and operational improvements.
Responsibilities:
- Support and operate P1 Security solutions in production contexts, notably PTM and VKB
- Conduct signalling security audits using proprietary PTA tooling
- Scope audits, including objectives, perimeter, constraints, timelines, and deliverables
- Prepare safe execution plans and operational safeguards
- Execute signalling security audits in a controlled manner
- Analyze results, validate findings, and assess exploitability and root cause
- Draft technical reports in English and present findings to customers
- Act as a technical point of contact for customers through scoping, updates, and delivery
- Deliver presentations, training, and debrief sessions
- Provide IT support for the PTM IDS through customer ticket workflows
- Troubleshoot and maintain PTM deployments, including Linux and virtualization layers
- Operate and improve tooling and scripts for investigations, maintenance, and deployments
- Collaborate with Engineering and R&D to improve tooling, detection quality, and operational processes
- Maintain internal documentation and handover notes
Requirements:
- Ability to draft professional, structured technical reports and slide decks in English
- Strong verbal communication skills for presenting and interacting directly with customers
- Solid understanding of telecom core architecture, roaming concepts, and signalling security in real operator environments
- Ability to read and reason about SS7/SIGTRAN, Diameter, LTE/IMS, and GTP-C call flows
- Ability to connect traces/observations to concrete security findings
- Familiarity with GSMA Fraud & Security standards, notably FS.11, FS.19, and FS.20
- Ability to translate standards requirements into test cases, evidence collection, and actionable remediation
- Mastery of roaming signalling attacks and call flows
- Comfortable using a terminal and basic Linux commands
- Proficiency in Python for one-off analysis or testing scripts
- Ability to write and maintain Bash/shell scripts for operational needs
- Experience with Linux and ESXi/VM operations is a plus
- Customer-centered, autonomous, rigorous, and proactive mindset
- Ability to work with Central European Time overlap preferred
Benefits:
- Remote-first team
- Preference for candidates who can overlap working hours with Central European Time
Similar Jobs
Security Engineer – GRC
Security Engineer owning governance, risk, and compliance for Alan’s health insurance and prevention platform. Managing ISO 27001, DORA, HDS, audits, risk, and security automation.
Associate Security Architect
Associate Security Architect detecting and mitigating cyberattacks for Akamai's managed security customers. Protecting digital properties through Akamai's distributed cloud, edge, and security platform.
Cloud Security Engineer
Cloud Security Engineer securing Azure infrastructure, identities, and AI workloads for a global IT transformation leader. Driving remediation, policy-as-code guardrails, and Microsoft Defender for Cloud posture improvement.
Portuguese Speaking Cybersecurity Customer Expert
Cybersecurity customer experts supporting Portuguese-speaking clients with security software and incident inquiries. Mercier Consultancy Group provides recruitment and BPO services across Europe.
Senior Cybersecurity Financial Compliance SME
Senior cybersecurity compliance SME ensuring DoW and Army audit readiness for ASRC Federal’s Vantage system. Applying NIST controls, FIAR requirements, and financial management overlays.
Security Architect
Arquiteto de Segurança da Informação na Verity, consultoria de transformação e engenharia digital. Projetando controles, riscos e práticas DevSecOps para ambientes Cloud e on-premises.
Security System Analyst – Lenel, Milestone
Security Systems Analyst supporting Lenel OnGuard and Milestone physical security systems for Securitas UK. Owning incident resolution, troubleshooting faults, and coordinating third-party engineers.
Cybersecurity Engineer
Cybersecurity Engineer automating cybersecurity operations, scripting, and API integrations for The Home Depot. Troubleshooting incidents and strengthening threat defense and access management.
Transit Safety Security Specialist
Transit safety specialist leading U.S. infrastructure safety, security, and certification projects for AECOM. Developing risk analyses, PTASPs, compliance documentation, and client training.
Manager, Cyber Security
Cyber Security Manager leading incident response, detection engineering, and security operations. Protecting Ping Identity’s cloud identity platform and enterprise systems.
Senior Domain Consultant – AI Security
AI Security Domain Consultant securing enterprise AI agents, applications, data, and supply chains. Leading customer PoVs, executive demos, architectures, and Prisma AIRS roadmap feedback.
Senior Security Architect – AD/Entra ID
Senior Security Architect securing Microsoft Active Directory and Entra ID environments for GuidePoint Security’s cybersecurity clients. Designing IAM architecture, automating administration and resolving complex identity security issues.
Information Security Engineer
Information Security Engineer securing Keyfactor’s cryptographic trust infrastructure. Managing monitoring, vulnerability assessments, incident response, and ISO 27001/SOC 2 compliance.
Cybersecurity Governance Analyst
Cybersecurity governance analyst developing enterprise policies, vendor risk assessments, and compliance controls. Supporting Agero’s digital driver assistance services through audits, remediation, and security awareness.
Senior Software Engineer – Security, Distributed Systems
Senior software engineer building backend distributed systems for RapidFort’s cybersecurity and software supply chain platform. Developing secure, scalable services across Linux, containers, Kubernetes, and cloud environments.
Staff Security Engineer, Proactive Security
Staff Security Engineer leading proactive security services, infrastructure protection, and secure engineering paths at DoorDash. Building resilient products for the technology and logistics company’s delivery network.
Managing Director, Enterprise Security Architecture – Engineering
Managing Director leading enterprise security architecture and cybersecurity platforms for The Cigna Group. Advancing cloud, DevSecOps, AI security, and cyber defense at scale.
Offensive Security Engineer / Penetration Tester
Offensive Security Engineer conducting web, mobile, Active Directory and cloud penetration tests for Genesis’s global product IT ecosystem. Building automation and AI-agent workflows for offensive security.
Senior Data Security Specialist – Data Security Strategy
Especialista sênior liderando estratégia de segurança e governança de dados corporativos. Proteção de informações sensíveis com DLP, DSPM, Purview e ambientes cloud.
Senior Manager, Global Security Technology
Global Security Technology leader shaping strategy, platforms, and modernization. Managing enterprise security projects, vendors, budgets, and global capability delivery for Johnson & Johnson healthcare operations.