Networks Support Engineer

About Us

1GLOBAL is a technology-driven global mobile communications provider, delivering global connectivity solutions to enterprises and consumers. Powered by a best-in-class telecom platform – including its own owned and operated global mobile core network, fully fledged in-house developed eSIM technology, and an extensive portfolio of telecom licenses – 1GLOBAL operates as a fully regulated telecommunications provider across 40 countries worldwide.

We serve many of the world’s leading banks, enterprises, and digital-first businesses, including neo-banks, global fast moving consumer goods companies, travel leaders, and payment service providers. Today, 1GLOBAL connects more than 70 million people and devices globally, enabling our customers to launch, scale, and innovate with confidence in the mobile ecosystem.

1GLOBAL is a profitable, fast-growing business. With full-year revenues in 2025 exceeding US$200 million and profits of over US$25 million, we generate strong cash flows to fund our growth allowing us to continuously invest in infrastructure, platform innovation, and global expansion. Recent years have marked a defining phase in our journey, with major enterprise and mass-consumer client wins accelerating our evolution into a global mobile connectivity powerhouse, purpose-built to enable consumer brands to enter and succeed with their own  aspirations to offer telecommunications services to their clients.

Founded in 2022 by experienced technology entrepreneurs, Hakan Koç and Pyrros Koussios, 1GLOBAL has rapidly emerged as a European technology leader shaping the future of global telecommunications. We operate as a fully regulated Mobile Virtual Network Operator (MVNO) in 12 countries and as a regulated telecom operator in an additional 28 markets. Headquartered in the Netherlands, with world-class R&D hubs in Lisbon, Berlin, and São Paulo, our team of close to 500 experts across 15 countries is united by a single ambition: to redefine global mobile connectivity through technology, scale, and execution excellence.

About the Team

A brief description of the team and an overview of the role

About the Role

• Monitor and support CORE and RAN networks to ensure high availability and performance.
• Troubleshoot service-impacting issues across Voice, Data, SMS, and Registration services.
• Analyze and resolve network faults using tools and traces involving protocols such as SS7, MAP, ISUP, SIP, CAP, DIAMETER, and related telecom signaling stacks.
• Escalate and coordinate with vendor and engineering teams on complex incidents.
• Participate in the root cause analysis of major incidents and implement corrective actions.
• Support daily operations and incident management, ensuring compliance with SLAs.
• Create and maintain accurate documentation related to procedures, configurations, and fault analysis.
• Collaborate with cross-functional teams, including Radio Planning, Core Engineering, and Customer Support.
• Stay updated on network evolutions, including 5G, IoT ecosystems, and virtualisation trends.

About You

• Degree in Telecommunications Engineering, Computer Science, or equivalent practical experience.
• Solid experience with troubleshooting in CORE and/or RAN networks.
• Strong understanding of telecom signaling protocols: SS7, MAP, ISUP, SIP, DIAMETER, CAP, etc.
• Hands-on experience diagnosing issues across Voice, Data, SMS, and network attach/registration flows.
• Experience with trace analysis and monitoring tools (e.g., Wireshark).
• Knowledge of the IoT ecosystem or M2M services is a plus.
• Strong incident management and problem-solving skills involving complex telecom infrastructures.
• Excellent English communication skills (written and verbal).
• Ability to work independently and prioritize tasks under pressure.
• Team player, highly organized, and detail-oriented with a structured approach to work.
• Critical thinker with a mindset focused on continuous improvement.
• Comfortable working in high-demand, fast-paced environments, including on-call rotations.

Why 1GLOBAL?

• Growth Opportunities: Advance your career in one of the fastest growing telecommunications companies, expanding over 100% year-on-year under the leadership of successful tech entrepreneurs.
• Major Transaction Exposure: Be in the driver’s seat for transactions that will have an impact on the future telco industry.
• Work with a Talented Team: From the Board and the Founders to the Senior Management Team, you will collaborate daily with the most capable and renowned external advisors, and constantly being exposed to talented and driven individuals.
• Dynamic Work Environment: Thrive in a collaborative, fast-paced workplace where innovation is encouraged, and every contribution counts.
• Professional Development: Work alongside industry experts to enhance your skills and knowledge in a cutting-edge field.
• International Experience: Gain opportunities to work in different 1GLOBAL offices around the world as you grow within the company.
• Open Communication Culture: Join a team where your ideas are heard, and open dialogue is encouraged, fostering a supportive and transparent work environment.
• Get Things Done Attitude: Be part of a results-driven team that values efficiency, creativity, and the drive to make a tangible impact in the industry.

1GLOBAL is an equal opportunity employer, we value your character as much as your talent. Diversity drives our innovation, and we offer a collaborative, dynamic, and international work environment. We are excited for you to join our mission to revolutionise connectivity globally.