Oracle ECE Architect - Lisbon Based

About Us

11GLOBAL 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.
Position Overview

We are seeking a highly skilled Oracle ECE and OCOMC Expert to strengthen our charging and billing operations and empower our charging & billing team. The ideal candidate will possess deep expertise in Oracle’s charging and mediation platforms, with the ability to translate complex technical concepts into practical training for non‑technical billing staff. This role bridges IT and business operations, ensuring accurate, scalable, and efficient handling of large volumes of usage events and billing data, in real time, providing team the technical knowledge and skills to manage and monitoring OCS in a way that delivers high levels of service availability to our customers with high level of accuracy in usage events rating, earning from our customers their trust and confidence in the service 1GLOBAL provide them. 

This role positions the expert as both a technical authority in Oracle ECE / OCOMC and a trainer who empowers the billing team to handle large volumes of usage events effectively and securely.

Key Responsibilities

System Expertise

• System Expertise
• Act as the subject matter expert on Oracle ECE (real‑time rating and charging) and OCOMC (offline charging mediation), with special focus on the following areas:
• Network integration (Diameter protocol)
• ECE customization
• Monitoring
• Configure, optimize, and maintain the charging system for high‑volume usage events.
• Ensure seamless integration between charging, mediation, and billing systems.
• Participate in the design and implementation of complex business and technical requirements, ensuring robustness, scalability, and alignment with Oracle’s best practices.
• Contribute to capacity planning, performance tuning, and platform evolution to keep the system resilient and cost-efficient as the business scales.

Training & Enablement

• Develop and deliver structured training programs for the billing team, focusing on maintenance, operation, and monitoring of ECE and OCOMC.
• Create clear documentation, guides, and best practices tailored to billing operations.
• Conduct workshops and hands‑on sessions to build confidence in analyzing event‑level data.

Operational Support

• Collaborate with IT, Finance, and Operations to streamline billing workflows.
• Provide guidance on troubleshooting discrepancies in rated events, mediation records, and invoices.
• Recommend improvements to reporting and data access, including the use of replicated databases for secure read‑only queries.
• Help in improve monitoring tools and methodology (knowledge on integration and development of monitoring tools in Grafana, Prometheus, Loki is a must) 

Must-haves

• Proven expertise in Oracle ECE and OCOMC platforms, for 3 years or more
• Strong knowledge of real‑time rating, charging, and mediation flows.
• Strong knowledge of charging diameter protocol
• Experience with SQL and database query optimization for large datasets.
• Excellent communication and presentation skills; ability to train and mentor non‑technical staff.
• Understanding of telecom and subscription‑based billing models.

Nice-to-haves

• Prior experience leading billing teams or training programs.
• Experience with high‑volume event processing in telecom or digital services industries.

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.