Voice Software Engineer (Lisbon based)
1GLOBAL
·Today
- Location
- Lisbon, Lisbon, Portugal
- Workplace
- Hybrid
- Type
- Full-time
- Department
- Technology
- Source
- Workable
Description
About Us
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 a member of the Network Engineering team within the Voice and Services functional area, you will be responsible for the design, development, testing and lifecycle management of voice and messaging services delivered through IMS and Telecom Application Server platforms. This includes proposing, analyzing and defining requirements for new and existing voice systems, and developing service logic using service creation frameworks such as Rhino (JAIN SLEE), Oracle Communications Application Server, or equivalent platforms.
You will define and support the technology evolution roadmap for the application server and voice service layer, and collaborate with other functional areas on cross-functional projects.
About the Role
- Design, develop, test and deploy voice/IMS service logic on Telecom Application Server platforms (e.g., Rhino/JAIN SLEE, Oracle Communications Application Server, or equivalent service creation frameworks), using SIP, CAMEL and Diameter interfaces
- Collaborate with other Networks teams to define and manage projects for the delivery of new voice and application server solutions
- Own end-to-end project delivery: network design, integration and migration strategy, and collaboration with other relevant departments
- Design new consumer and corporate voice/telecom solutions
- Create and maintain technical documentation (HLDs, LLDs, Work Orders, etc.) throughout the solution lifecycle
- Implement solutions in live environments and define end-to-end system testing requirements
- Define and track Quality and Performance indicators
- Perform capacity and performance analysis, reporting, and define improvement solutions
- Define and implement service and resource configuration on relevant systems
- Contribute to complex solutions that influence current product design and address design issues for future products/technologies
- Maintain close working relationships with external partners (carriers, service providers)
- Elaborate and manage the change request process with partners to meet network requirements
- Own the network elements roadmap, including software/hardware upgrade planning across the component lifecycle
- Drive process improvements, especially cross-team processes
- Document the existing technology portfolio and propose recommendations for improvements or alternatives