Networks Operations Engineer

1GLOBAL is a technology-driven global mobile communications leader, built to help enterprises unlock the full potential of mobile connectivity at scale. Powered by a best-in-class telecom platform – including our own owned and operated global mobile core network, a full end-to-end eSIM technology stack, and an extensive portfolio of telecom licenses – 1GLOBAL operates as a fully regulated telecommunications provider across 40 countries worldwide. Combined with our privileged access to the global wholesale telecom market, this positions us uniquely to deliver seamless, compliant, and scalable connectivity solutions anywhere in the world.

We serve many of the world's leading banks, enterprises, and digital-first businesses, including neo-banks, 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 exceeding US$200 million and profits of over US$25 million, we generate strong cash flows and fund our growth independently—continuously investing 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 telecommunications offerings.

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.

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 services.
• 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, 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.
• In-depth understanding of telecom signalling protocols, including SS7, MAP, ISUP, SIP, DIAMETER, CAP, and others.
• 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 problem-solving skills, particularly in complex telecom infrastructures.
• Excellent English communication skills, both written and verbal.
• Ability to work independently and prioritise tasks under pressure.
• Collaborative team player, highly organised and detail-oriented, with a structured approach to work.
• Critical thinker with a focus on continuous improvement.
• Comfortable working in high-demand, fast-paced environments, including on-call rotations.

Do not apply if:

• You don't like to work independently, with minimum supervision, with strong analytical capabilities, and with a customer-focused mindset.
• If you don't have a team player mentality.
• You are not someone detail-conscious, highly organised and methodical with a strong work ethic.
• You don't practice critical thinking and a continuous improvement mindset.
• You are not comfortable in a fast-paced, intense, and demanding environment.

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.