Telecom security trainer

Founded in 2011 P1 Security is on a mission to secure critical and sovereign mobile networks by providing services and technologies to identify detect and recover from critical threats and vulnerabilities.

We address telecom security challenges across 5G cloud-based infrastructure OpenRAN network slicing edge computing (MEC) and legacy telecom systems (2/3/4G) including Diameter SS7 SIGTRAN GTP and related attack surfaces.

Our team includes telecom operators security professionals and researchers who regularly share cutting-edge work at international security conferences and GSMA working groups. P1 Labs our R&D branch also shares open-source initiatives with the telecom security community (GitHub).

We are seeking an experienced Freelance Telecom Security Trainer to deliver high-impact onsite technical training for mobile network operators (MNOs) regulators and enterprise clients worldwide.

Working on a per-mission basis you will adapt and present established course content and practical lab materials from P1 Securitys training platform. You will help engineering and security operations center (SOC) teams understand telecom protocol vulnerabilities assess their impact and apply effective detection and defense strategies.

This role combines deep telecom security expertise with strong classroom facilitation skills and a practical hands-on approach to learning.

• Deliver multi-day onsite technical workshops worldwide adapting your approach to participants technical backgrounds and learning objectives.

• Prepare for each mission by reviewing the course scope audience prerequisites learning objectives and practical lab requirements with the P1 Security team.

• Adapt existing online curriculum presentations exercises and lab materials for engaging live classroom delivery.

• Explain signaling flows trust boundaries protocol vulnerabilities attack scenarios and defensive controls clearly and accurately.

• Facilitate hands-on exercises in authorized controlled lab environments and help participants troubleshoot technical issues.

• Answer participant questions on telecom security including detection mitigation and operational defense strategies.

• Check participants understanding through practical exercises discussion and knowledge checks.

• Coordinate classroom and lab readiness with P1 Security and the client before delivery.

• Gather participant feedback and share recommendations to improve course content and delivery.

• Respect client confidentiality intellectual property and agreed rules of engagement throughout each mission.

• Deep telecom security expertise in one or more of the following domains:

• SS7 / SIGTRAN: MAP/CAP signaling common abuse scenarios and signaling security controls. Related course: TS-201 2G 3G and SS7 Mobile Network Security.

• LTE / Diameter: S6a Gx and Gy interfaces protocol vulnerabilities and defensive measures. Related course: TS-401 LTE Security and Insecurity.

• GTP-C: Versions 1 and 2 control-plane procedures security risks and mitigation strategies. Related training tracks: TS-201 2G/3G and TS-401 LTE / EPC depending on the mission scope.

• IMS / SIP: Signaling fundamentals protocol weaknesses and protection mechanisms. Related course: TS-250 IMS Security.

• 5G: Service-based architecture (SBA) HTTP/2 and JSON-based APIs and interconnect security involving N32 and the Security Edge Protection Proxy (SEPP). Related course: TS-501 5G Telecom Security hands-on course.

• You do not need to cover every domain to apply. Specialists in one or several domains are welcome. Missions will be matched to your demonstrated expertise; please indicate the courses and topics you are confident teaching independently.

• Proven experience delivering technical training workshops or hands-on instruction to engineering or SOC teams.

• Ability to explain complex technical concepts manage classroom discussion and adapt to mixed levels of experience.

• Practical experience analyzing telecom signaling traces and using packet-analysis tools such as Wireshark.

• Confidence working with Linux-based lab environments and troubleshooting connectivity or exercise issues.

• Professional preparation reliable delivery and clear communication with clients and the P1 Security team.

• Willingness and ability to travel internationally for short-term onsite engagements: typically around five days per mission including travel with some engagements requiring up to two weeks onsite.

• Experience in telecom security consulting penetration testing incident response signaling monitoring or mobile core network operations.

• Familiarity with 3GPP security specifications and relevant GSMA signaling security guidance.

• Experience with signaling firewalls roaming and interconnect security or telecom threat detection.

• Experience adapting digital learning content into instructor-led courses and practical exercises.

• Familiarity with virtualized or containerized lab environments and scripting for lab preparation.

• Experience teaching international audiences or working across different cultural and organizational contexts.

• Fluent professional English with the ability to deliver technical instruction and facilitate discussions.

• Additional languages are a plus including French.

• Contract type: Freelance on a per-mission basis.

• Delivery location: Onsite at client locations worldwide.

• Mission duration: Typically around five days including travel; some engagements may require up to two weeks onsite.

• Headquarters: Paris France.

• Training materials: Established curriculum and lab materials from P1 Securitys training platform adapted for each classroom engagement.

• Commercial arrangements: Scope preparation time delivery dates fees and travel and accommodation arrangements to be agreed for each mission.

• First contact call (10-20min)

• Direct manager call (30min)

• Capability assessment exercice (depending on position)

• C-level & Director call (30 min)

If you are a motivated and experienced professional who is passionate about cybersecurity and driving innovation we would love to hear from you! Join P1 Security and be part of a fascinating mission to protect critical infrastructure and work alongside industry experts in the cybersecurity field.

To apply please send your CV or professional profile and a short introduction highlighting your telecom security expertise and training experience. Include the protocols and courses you can teach examples of previous workshops or audiences your availability your location and travel flexibility and your indicative daily rate. Please do not include confidential client information.

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