10/27/2026 updated
100 % available
Senior Network & Telecom Engineer | BGP, OSPF, MPLS, SS7, Diameter
Rijeka, Croatia
Worldwide
Senior Network & Telecom Engineer with over 10 years of professional experience in IP networking, telecommunications infrastructure, network architecture, system integration, and complex troubleshooting.
I support telecom operators, internet service providers (ISPs), system integrators, and enterprise customers with network design, implementation, integration, troubleshooting, and technical consulting.
CORE EXPERTISE
IP Networking & Routing
- BGP, OSPF, MPLS, TCP/IP, IPv4/IPv6
- Layer 2/Layer 3 networking, VLANs, routing, switching
- VPN connectivity, network redundancy, high availability
- Network troubleshooting, traffic analysis, and performance optimization
Telecom Core & Signalling
- SS7, SIGTRAN, SCTP, M3UA, SCCP, GTT
- Diameter signalling and mobile core interconnection
- GTP-C/GTP-U, GRX/IPX connectivity
- Mobile network integration, signalling connectivity validation, and troubleshooting
Network Architecture & Engineering
- High-Level Design (HLD) and Low-Level Design (LLD)
- Network requirements analysis and solution design
- Network integration, migration, and implementation planning
- Technical documentation, change procedures, and service assurance
Troubleshooting & Root Cause Analysis
- Advanced IP and signalling protocol troubleshooting
- Wireshark, tcpdump, packet capture analysis
- Root Cause Analysis (RCA), fault isolation, and incident investigation
- Network connectivity and routing verification
Technologies & Tools
- Cisco, Nokia, MikroTik, Linux
- Ansible, Python-based automation, network monitoring
- Network configuration, validation, and operational diagnostics
Additional Experience
- Maritime and critical communications systems
- PAGA, intercom, Radio over IP (RoIP), IPTV
- Multicast networking, IGMP, CCTV, and integrated communication systems
SERVICES OFFERED
- Network engineering and technical consulting
- IP network architecture and design
- BGP/OSPF/MPLS troubleshooting and optimization
- Telecom signalling integration and troubleshooting
- Network implementation and migration support
- Root Cause Analysis and technical investigation
- HLD/LLD documentation and implementation planning
- Remote troubleshooting and selected on-site engineering assignments
I combine hands-on implementation capabilities with an architecture-oriented approach, delivering practical, technically justified solutions.
Available for remote B2B projects across Europe and selected on-site assignments by agreement.
Experience
Professional experience10+ years
Freelancer since2026
Languages
EnglishFluentItalianGoodCroatianNative speaker