Adrián Freisinger

Responsible for designed, implemented and operated a nationwide WAN infrastructure interconnecting data centers and regional offices across Argentina, ensuring high availability, redundancy and secure internet connectivity.

• Managed core and edge routing infrastructure based on Cisco (ISR, ASR, Catalyst) and Alcatel-Lucent (7750 SR, 7210 SAS) equipment.
• Configured and maintained dynamic routing protocols including BGP (eBGP/iBGP) and OSPF for nationwide traffic engineering and redundancy.
• Operated MPLS-based WAN circuits, coordinating with multiple ISPs for backbone connectivity and SLA compliance.
• Implemented HSRP/VRRP for gateway redundancy and high availability at branch and data center levels.
• Designed VLAN segmentation, trunking (802.1Q), and Layer 2/Layer 3 switching environments.
• Applied QoS policies for traffic prioritization (voice, critical services, internet breakout).
• Configured firewall policies, ACLs and NAT to secure inter-site and internet communications.
• Performed network monitoring (SNMP, NetFlow), capacity planning and deep troubleshooting of latency, jitter, packet loss and routing convergence issues.
• Led incident response and root cause analysis for critical WAN and internet outages.
• Automated configuration backups and repetitive tasks using scripting to improve operational reliability.

Responsible for the planning, specification, procurement and implementation of nationwide telecommunications services within a public administration framework, ensuring regulatory compliance, transparency and budget control.

• Drafted technical specifications and bidding documents (Pliegos Técnicos) for public tenders related to data networks, MPLS services, internet connectivity and IP telephony.
• Participated in evaluation committees, performing technical and economic assessment of vendor proposals in accordance with public procurement regulations.
• Prepared technical reports and formal evaluation documents to support award recommendations.
• Managed telecom budget planning, cost projections and financial tracking aligned with institutional guidelines.
• Coordinated with legal, procurement and audit departments to ensure compliance with national public administration procedures.
• Supervised implementation and rollout of WAN, LAN and telephony services across regional offices nationwide.
• Oversaw acceptance testing, service validation and compliance verification prior to operational approval.
• Ensured adherence to SLA agreements and regulatory requirements during contract execution.
• Produced official documentation, technical memoranda and infrastructure reports for internal and external control bodies.
• Acted as technical liaison between institutional authorities, service providers and operational teams.

Head of Telecommunications Engineering, responsible for the strategic planning, governance and oversight of nationwide data and telephony infrastructure within a public administration environment.

• Reported directly to executive management, providing technical advisory, strategic planning and budget forecasting for nationwide telecommunications services.
• Led the Engineering Department, supervising multidisciplinary technical teams and coordinating nationwide infrastructure initiatives.
• Directed the preparation of technical specifications (Pliegos Técnicos) and procurement documentation for public tenders related to WAN, MPLS, Internet and IP telephony services.
• Participated in bid evaluation committees, overseeing technical and financial assessments to ensure transparency, regulatory compliance and cost-efficiency.
• Managed annual telecommunications budgets, financial planning and contract execution control.
• Acted as primary institutional liaison with service providers, carriers and technology vendors, overseeing SLA compliance and contractual obligations.
• Represented the department before internal and external audit bodies, preparing technical reports and ensuring procedural compliance.
• Supervised implementation, deployment and commissioning of telecommunications services across regional offices nationwide.
• Established governance processes, documentation standards and operational policies for infrastructure lifecycle management.
• Led incident escalation management and executive-level reporting for critical service disruptions.

Responsible for the design, implementation and operation of nationwide WAN infrastructure connecting multiple regional offices across Argentina.

• Designed and maintained large-scale WAN networks interconnecting data centers and branch offices across the country.
• Managed routing protocols (BGP, OSPF) ensuring high availability and optimized traffic engineering.
• Coordinated with ISPs for internet connectivity, redundancy, and MPLS circuits provisioning.
• Implemented network segmentation, VLAN architecture, and firewall policies to ensure secure communications.
• Performed capacity planning, monitoring, and troubleshooting of latency, packet loss, and routing convergence issues.
• Automated network configuration tasks using scripting to improve operational efficiency.
• Participated in incident response and root cause analysis for critical network outages.

Python backend developer responsible for designing, implementing and maintaining software solutions that support engineering infrastructure and real-time communication platforms.

• Developed backend services and APIs to support internal engineering platforms such as Jitsi (video conferencing) and Matrix (federated messaging).
• Implemented automation scripts and microservices to streamline deployment, configuration and monitoring of infrastructure components.
• Integrated monitoring and observability tools (Grafana, Prometheus) for real-time metrics visualization and alerting.
• Built RESTful APIs and backend services using Python, ensuring scalability, reliability and secure authentication mechanisms.
• Automated infrastructure workflows using Ansible and containerized services with Docker.
• Designed logging and metrics pipelines to improve incident detection and performance analysis.
• Collaborated with network and infrastructure teams to bridge backend development with operational requirements.
• Performed troubleshooting and performance tuning of real-time communication systems.
• Maintained CI/CD pipelines to ensure controlled deployments and version management.