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Roméo G.RG

Roméo G.

Systems, Telecoms, and Inference Architect

€850/day
Lannion, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Roméo

🌐Systems, Telecoms & Inference Architectwith over 15 years of experience in infrastructure design, optimization, and security.

📡 **VoIP/SIP Expert**: Integration, deployment, and monitoring (Asterisk, Freepbx, Cisco CUCM, Teams Direct Routing, SBC Audiocodes/Oracle/Ribbon).

🚀 **Cloud & Microservices**: Development and orchestration (Docker, OpenTOFU, AWS, GCP, Azure).

🛠️ **DevOps**: Git CI/CD, containerization, scripting (Bash, PowerShell, Ansible, Gitea).

🤖 **AI & LLMs**: Integration of LLM models into business solutions via OpenAI, Langchain. Synthesis, Transcription, Inference, and WebRTC.

🔒 **Securing your IS**: Audit, MCO, PCA, PRA. Implementation of OpenSSL PKI, VPN, Intune access management.

Why choose me?

1️⃣ Versatile Expertise: With over 15 years of experience, I work on complex projects combining systems, networks, security, VoIP, and AI. I can quickly adapt to your specific needs and ecosystem.

2️⃣ Concrete Results: I have led international VoIP/SIP solutions integration/migration projects. Migrated to the cloud. Automated time-consuming processes.

3️⃣ Tailored Support: My approach focuses on listening, understanding your business challenges, and implementing customized, reliable, and high-performance solutions.

4️⃣ Triple Competency: Data/Voice/AI. From Cloud infrastructures (AWS, GCP, Azure), to containers (Docker, OpenTOFU), to advanced networks (BGP, QoS), to security (PKI, VPN). You benefit from industry best practices.

5️⃣ Smooth Communication: Bilingual French/English, I work with both technical teams and decision-makers to ensure the success of your projects.

Choosing me means choosing a trusted partner to lead your IT projects to success! 🚀
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Lannion (up to 50km)

Experience

  • EXFO
    SIP/IMS 4G VoLTE and 5G VoNR Expert
    TELECOMMUNICATIONS
    July 2025 - April 2026 (9 months)
    Rennes, France
    Analysis of current and future needs
    Definition of software, system, and network architecture
    Market solutions benchmark
    Support for supplier selection
    Deployment of a Kamailio IMS VoLTE/VoNR dual-stack IPv4/IPv6 infrastructure
    Development of a SIP IPsec 3GPP monitoring probe simulating a VoLTE/VoNR mobile phone in Rust. UDP/TCP/TLS connection
    Implementation of CI/CD pipelines
    Containerization of infrastructure services and microservices
    Rust Gitlab CI/CD SIP IMS 3GPP
  • Dalon Corp
    Co-founder – Technical Director
    DIGITAL AND IT
    November 2023 - Today (2 years and 9 months)
    Rennes, France
    Development of unified communication and multi-tenant streaming solutions bringing LLMs "Large Language Models" to life
    Integration of language processing (NLP) services with WebRTC/SIP Cloud/Edge/On-Prem technologies.
    Web pre-rendering microservice for search engine optimization for Node.JS/Javascript-based solutions.
    Golang microservice for internet search, image generation, and image analysis for LLMs.
    OpenAPI Specs code generator for AirFrance KLM and MétéoFrance APIs. Microservice enabling LLMs to interact with business APIs.
    Multi-tenant authentication, authorization, and accounting server at the core of a microservices architecture.
    microservices-architecture Livekit NATS Jetstream Rust Golang
  • ILEXIA
    Technical Director
    October 2013 - October 2023 (10 years and 1 month)
    Paris, France
    Management and support of the technical team (5 employees) – Planning, objectives, tasks, GANTT, and RIDA monitoring.
    Facilitation of project workshops (internal/external).
    Development of a data/voice load testing and audit solution. Facilitating the resolution of customer VoIP quality incidents.
    Definition and integration of the new IT system maintenance/business continuity/disaster recovery strategy.
    Support for project owners on end-of-PSTN topics, SIP trunk centralization, multi-vendor federation.
    Renovation of the IT system by containerizing internal and client business applications.
    Skills transfer, quality control, and technical support for employees.
    Implementation of an automated marketing and mass mailing solution.

Recommendations

Gabriel HéronneauGH
Pierre GarnierPG
GD
Gabriel Héronneau and 2 other people have recommended Roméo

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Education

  • Systems, Networks, and Security Architect
    ETNA
    2009
    Architecte Systèmes, Réseaux et Sécurité
  • Networks and Telecommunications
    DUT
    Réseaux et Télécoms

Certifications

  • AudioCodes SBCs - Essentials and Configuration (English)
    AudioCodes
    2022
    SIP Trunk SBC TOIP VoIP Cybersecurity SIP Telecommunications Interoperability Voice over IP (VoIP) WebRTC
  • Cisco Certified Network Associate (CCNA)
    ETNA
    2013
    IPv6 IPv4 Ethernet TCP/IP Cisco Technologies Cisco IOS OSI Model Routing Cisco Networking OSPF

Skill set

Categories