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 with its own owned and operated global mobile core network in 15 countries, fully fledged in-house developed eSIM technology, and an extensive portfolio of telecom licenses; 1GLOBAL operates as a fully regulated telecommunications provider across 43 countries worldwide.

The company serves many of the world’s leading banks, multinational enterprises, global retailers and digital-first businesses, including neo-banks, global fast moving consumer goods companies, travel leaders, and payment service providers. Today, 1GLOBAL connects more than 80 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. In 2026 also the parent of the Lidl Group acquired a 10% interest in 1GLOBAL as part of a deal for Lidl to offer globally to its 180 million consumers communication services. Recent years have marked a defining phase in 1GLOBAL’s journey, with major enterprise and mass-consumer client wins accelerating its 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. It operates as a fully regulated Mobile Virtual Network Operator (MVNO) in 15 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, its team of close to 550 experts across 16 countries is united by a single ambition: to redefine global mobile connectivity through technology, scale, and execution excellence.

About the Team

We are looking for an experienced Charging Team Lead to own and evolve our online and offline charging capabilities. This role combines technical authority, people leadership, and delivery ownership across the charging domain and mediation and billing integrations. As Charging Team Lead, you will guide the team responsible for designing, implementing, operating, and scaling high-volume charging solutions that rate usage events accurately and in real time. You will work closely with Product, IT, Finance, Operations, and Billing teams to translate business needs into reliable platform capabilities while building the technical knowledge and operational maturity of the team.

You will be part of an international environment where engineering ownership, customer focus, accountability, and collaboration are expected. Fluency in English is essential for this role; please ensure your CV is submitted in English as part of your application.

About the Role

• Lead the charging engineering team day to day, setting priorities, managing delivery plans, and ensuring predictable, on-time execution.
• Interpret business needs from customers, stakeholders, and product managers, translating them into clear technical designs and actionable development tasks.
• Own the technical direction for the charging domain, balancing short-term delivery pressure with long-term platform resilience, scalability, and maintainability.
• Design, document, and communicate solution architectures, including technical impact, effort, dependencies, and resource requirements.
• Lead by example through hands-on technical guidance, design reviews, code reviews, and pragmatic engineering decision-making.
• Act as a subject matter expert for all real-time rating and charging and offline charging mediation.
• Ensure seamless integration between charging, mediation, billing, CRM/BSS, and network systems.
• Oversee configuration work, Diameter-based network integrations, charging flow monitoring, event rating accuracy, and platform stability.
• Contribute to capacity planning, performance tuning, and platform evolution so the charging estate remains resilient and cost-efficient as the business scales.
• Promote and enforce best practices in AI assisted development, coding standards, software quality, automated testing, CI/CD, deployment reliability, and full lifecycle ownership.
• Ensure observability, security, networking, and operational readiness are considered across new and existing charging capabilities.
• Participate in recruitment and uphold high standards for technical excellence across the team.

Requirements

About You

Must Have

• Proven technical leadership and people management experience in a team lead, engineering lead, or similar role.
• Strong knowledge of real-time rating, online charging, offline charging mediation, and telecom or subscription-based billing flows, with deep hands-on expertise.
• Strong understanding of the Diameter protocol, network integration patterns, rating scenarios, charging system monitoring, and event-level troubleshooting.
• Solid understanding of CI/CD pipelines, containerization technologies (Docker, Kubernetes), automated testing, DevOps principles, deployment stability, and operational support.
• Experience with observability and monitoring tools such as Grafana, Prometheus, and Loki.
• Ability to manage multiple initiatives simultaneously while balancing delivery commitments with long-term technical vision.
• Excellent communication, mentoring, and presentation skills, including the ability to train non-technical or less technical colleagues.
• Strong emotional intelligence, cross-functional collaboration skills, and commitment to team engagement and continuous learning.
• Fluent written and spoken English.

Nice to Have

• Experience with Optiva or Oracle charging products is a plus.

Benefits

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.