Open to opportunities

Sebastian Medina

@sebastianmedina

Network engineering intern focused on IMS cloud-native Kubernetes and VoLTE monitoring building operational tooling and evidence-based troubleshooting

Mexico

Message

What I'm looking for

I’m looking for a telecom-focused role where I can own IMS/VoLTE monitoring and troubleshooting, build operational tooling, and deepen my Kubernetes and automation skills—while communicating clearly in English within a collaborative engineering culture.

I’m a network engineering intern specializing in IMS cloud-native infrastructure on Kubernetes, currently supporting AT&T México’s Voice Engineering team. I focus on keeping IMS/VoLTE service healthy through KPI monitoring, alarms, and fast, well-documented troubleshooting.

In my current role, I continuously monitor IMS/VoLTE network KPIs using Nokia PNM and production metric dashboards. I also built a mobile-first PWA KPI Dashboard to help stakeholders review voice network performance directly from mobile devices.

When issues appear, I rely on evidence—not assumptions—by analyzing .pcap traces with careful technical reasoning. For example, I delivered documented technical evidence showing roaming restriction errors were not attributable to the AT&T team, and I implemented a proxy gateway workaround for blacklist/whitelist misconfiguration.

Alongside my internship, I lead TagLife MX as Founder and General Director, where I manage branding, strategy, client relations, and conference presentations. I apply the same operational mindset to entrepreneurship—autonomously running workflows, maintaining a 130+ client portfolio with strong retention, and delivering NFC technology solutions.

Experience

Work history, roles, and key accomplishments

Current

Network Engineering Intern

Current

AT&T México

Dec 2025 - Present (6 months)

Monitors IMS/VoLTE network KPIs using Nokia PNM and production dashboards, and troubleshoots issues using .pcap traces to provide documented evidence to stakeholders. Built a mobile-first PWA KPI dashboard and implemented a proxy gateway workaround to ensure correct routing toward HSS for WLAN-enabled elements.

VoLTE Kubernetes Nokia PNM KPIs

Current

Founder & General Director

Current

TagLife MX

Jan 2024 - Present (2 years 5 months)

Founded and leads an NFC technology company, managing branding, commercial strategy, and client relationships, with active portfolios of 130+ clients and 92% retention across 10+ Mexican states and 3 countries. Runs automation workflows to support parallel operations alongside a full-time role and develops NFC-related products and multimedia content.

NFC Smart Card Design Client Management Commercial Strategy Workflow Automation Product Photography Multimedia Content Technical Presentations

Technical Support Developer

Independent Projects

Jan 2021 - Jan 2023 (2 years)

Deployed Linux-based network environments and set up basic Asterisk (PBX/VoIP) configurations, supporting hands-on network and software setup. Contributed to automation and data prediction research projects while installing and configuring network infrastructure and electronic equipment.

Linux Administration VoIP Network Infrastructure Data Prediction Research