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Networks Operations Engineer

Job in Lisbon, Connecticut, USA
Listing for: 1GLOBAL
Full Time position
Listed on 2026-01-16
Job specializations:
  • IT/Tech
    Telecoms Engineering, Systems Engineer, Cybersecurity
Job Description & How to Apply Below
Location: Lisbon

1

GLOBAL is a technology-driven global mobile communications עקספּירית dedicated to empowering enterprises worldwide to unlock the full growth potential of mobile connectivity. With a best-in-class telecom technology platform, a comprehensive suite of globally viable regulatory licenses, and privileged access to the telecom wholesale market, 1

GLOBAL is uniquely positioned to deliver seamless compliance and connectivity solutions. Serving the world’s leading banks, corporations, and digital-first businesses—including neo-banks, travel companies, and payment service providers—1

GLOBAL connects over 43 million devices globally.

With 2024 full-year revenue exceeding US $100 million and in line to exceed US $200 million in FY25, 1

GLOBAL is a profitable business generating significant cash flows to fund its ongoing investments in infrastructure, transformation, and growth. 2024 saw majorgevoel client wins and marked 1

GLOBAL’s evolution from a multi-market telecommunication provider to a global technology-driven mobile 착이 connectivity powerhouse.

Apparue in 2022 by experienced tech founders and entrepreneurs Hakan Koç and Pyrros Koussios, 1

GLOBAL is a European technology leader driving digital transformation in the global telecommunications market. It operates as a fully regulated Mobile Virtual Network Operator (“MVNO”) in ten countries and as a regulated telecommunications operator in an additional 31 countries. Headquartered in the Netherlands, with world-class R&D hubs in Lisbon, Berlin, and São Paulo, 1

GLOBAL employs over 450 experts across 15 countries.

Position Overview

You will be part of the Platform Support team, responsible for troubleshooting customer network issues related to registration, voice, data, and SMS services across multiple products, including B2B, B2C, and IoT. You will also be involved in API troubleshooting for some of our largest customers.

You should be a well‑organised individual who can manage multiple priorities and work independently while following direction from remote teams. A calm and analytical approach is essential, especially when handling challenging or unexpected situations. Being detail‑oriented and committed to doing things right is key, as are strong interpersonal skills to build effective relationships across teams.

We’re looking for someone who is proactive, motivated, and aligned with the broader goals of our operations. You should understand the impact your work has on the customer experience, particularly during incidents, and be able to connect day‑to‑day local activities with central management through clear communication and reporting. Flexibility and resilience in a fast‑paced environment are a must.

Key Responsibilities
  • Monitor and support CORE and RAN networks to ensure high availability and optimal performance.
  • Monitor and support the API connectivity ecosystem to maintain high availability and performance.
  • Troubleshoot service‑impacting issues across Data and IoT devices, with some involvement in Voice and SMS effective.
  • Analyse and resolve network faults using tools and traces involving protocols such as SS7, MAP, ISUP, SIP, CAP, DIAMETER, and related telecom signalling stacks.
  • Escalate and coordinate with vendors and engineering teams to resolve complex incidents.
  • Participate in root cause analysis (RCA) of major incidents and contribute to the implementation of corrective actions.
  • Support daily operations and incident management

    ISCO ensuring compliance with SLAs.
  • Create and maintain accurate documentation for procedures, configurations, and fault analyses.
  • Collaborate with cross‑functional teams, including Radio Planning, Core Engineering, and Customer Support.
  • Stay up to date with network evolutions, including 5G, IoT ecosystems, and virtualisation trends.
  • Degree in Telecommunications Engineering, Computer Science, or equivalent practical experience.
  • Proven experience in troubleshooting CORE and/or RAN networks.
  • Strong experience working with IoT modules.
  • Hands‑on experience diagnosing issues across Voice, Data, SMS, and network attach/registration flows.
  • Experience with trace analysis and monitoring tools (e.g., Wireshark).
  • Strong incident management and…
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