Network Optimization Engineer (Lisbon based)

1GLOBAL is a technology-driven global mobile communications provider helping enterprises and consumer brands deliver seamless connectivity worldwide. Powered by a best-in-class telecom platform, proprietary eSIM technology, and its own mobile core network across 15 countries, 1GLOBAL operates as a fully regulated telecommunications provider in 43 countries.

Founded in 2022, 1GLOBAL has rapidly become one of Europe's fastest-growing telecom technology companies, connecting more than 80 million people and devices globally. Our customers include leading banks, multinational enterprises, global retailers, travel companies, payment service providers, and digital-first businesses.

Headquartered in the Netherlands, with R&D hubs in Lisbon, Berlin, and São Paulo, 1GLOBAL employs over 550 professionals across 16 countries. With annual revenues exceeding US$200 million and a strong track record of profitability, we continue to invest in innovation, infrastructure, and international expansion as we redefine the future of global mobile connectivity.

About the Team

As 1GLOBAL expands its global customer base and service portfolio, the performance, reliability, and scalability of our mobile network are increasingly critical. As a Network Optimization Engineer, you will drive operational excellence, service assurance, and continuous improvement across our network and services, spanning multiple core network domains.

About the Role

About You

Your primary focus will be detecting, investigating, and resolving network and service issues before they impact customers. You will define the monitoring strategy, performance frameworks, and operational processes needed to spot degradation, bottlenecks, and emerging risks early, and use network data and KPIs to drive rapid incident response, thorough root cause analysis, and lasting corrective actions.

The Network Optimization team oversees network changes, defines service and network KPIs, builds recovery and resilience mechanisms, and ensures operational readiness across all network domains. Beyond resolving issues, the team turns operational learnings into structural improvements in network architecture, platform design, and service flows. Working closely with Network Engineering, Network Observability, Operations, Product, Software Engineering, Legal & Regulatory, and commercial teams, it serves as the focal point for service performance and reliability across 1GLOBAL.

Must Have

Nice to Have

Why 1GLOBAL?

• Growth Opportunities: Advance your career in one of the fastest growing telecommunications companies, expanding over 50% 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.