Evolved Packet Core

1GLOBAL is a technology-driven global mobile communications provider dedicated to empowering enterprises worldwide to unlock the full growth potential of mobile connectivity. With a best-in-class telecom technology platform, a comprehensive suite of globally viable regulatory licenses, and privileged access to the telecom wholesale market, 1GLOBAL is uniquely positioned to deliver seamless compliance and connectivity solutions. Serving the world's leading banks, corporations, and digital-first businesses—including neo-banks, travel companies, and payment service providers—1GLOBAL connects over 43 million devices globally.

With 2024 full-year revenue exceeding US$100 million and in line to exceed US$200 million in FY25, 1GLOBAL is a profitable business generating significant cash flows to fund its ongoing investments in infrastructure, transformation, and growth. 2024 saw major client wins and marked 1GLOBAL's evolution from a multi-market telecommunication provider to a global technology-driven mobile connectivity powerhouse.

Established in 2022 by experienced tech founders and entrepreneurs Hakan Koç and Pyrros Koussios, 1GLOBAL is a European technology leader driving digital transformation in the global telecommunications market. It operates as a fully regulated Mobile Virtual Network Operator ("MVNO") in ten countries and as a regulated telecommunications operator in an additional 31 countries. Headquartered in the Netherlands, with world-class R&D hubs in Lisbon, Berlin, and São Paulo, 1GLOBAL employs over 450 experts across 15 countries.

Position Overview

As a Network Architect, in the Network Team, you will be responsible to propose, analyze and define the requirements for new and existing services and systems, in the functional domain of Evolved Packet Core and 5G SA Core.

You will be responsible for preparing, designing, testing, and delivering new solutions or enhancements to the existing product portfolio. Additionally, you will define and support the technology evolution roadmap for systems within the assigned functional area and domain, while also actively participating in and supporting cross-functional projects in collaboration with other functional areas.

Key Responsibilities

• Collaboration with other Networks teams in defining and managing the projects for delivery of new solutions
• Project delivery. Network design. Integration and migration strategy definition. Collaboration with other relevant departments. Responsible for end-to-end delivery
• Iterates with the customer (internal and external) and other stakeholders to determine the technical requirements, risks, technical impacts, and recommendations
• Design of new consumer and corporate telecom solutions
• Creation of technical documentation (HLD's, LLD's, WO's, etc.) and maintain it over the lifecycle of the solutions
• Understanding of End to End system testing requirements
• Follow-up and define Quality and Performance indicators
• Capacity and Performance Analysis, Reporting and Improvement Solution Definition
• Service & Resource configuration definition and implementation on requested systems
• Work on complex solutions that influence the design of current products and addresses design issues for future products or technologies
• Market prospection of new solutions through elaboration and analysis of Request for Information/Proposal/Quotation processes and negotiation with potential suppliers
• Elaborate, and manage the process, for change requests to current partners in order to meet the network necessities
• Control the network elements roadmap, being responsible for the necessary software/hardware upgrade during the components lifecycle
• Generate and implement process improvements, including and especially cross-team processes
• Follow up of new technology trends in the Telecom industry. Documents the existing technology portfolio and proposes recommendations for improvements and/or alternatives

Requirements

Must Have

• Proven experience on implementation of live solutions on mobile telecom (GSM, UMTS, LTE, IMS), networks design, capacity management, engineering and architecture
• Knowledge of 3GPP, GSMA, ITU standards and specifications
• Experience in the design, test and operation of Packet Core systems, including P-GW, RADIUS, DNS, PCRF, ePDG, DRA
• Experience in defining, establishing and maintaining roaming interconnects for GRX/IPX
• Understanding about IMS architecture. Experience in deploying VoLTE, VoWiFi, and QoS
• Experience in designing, implementing, testing and troubleshooting the following interfaces: Gx, RADIUS, SGi/Gi, Gy, Bp, S6b, S2b, SWm, Sxb
• Experience in mobile services charging (offline, online).
• Experience in Policy control, including DPI and PCRF policy creation
• Experience with IoT, including LTE-M and NB-IoT
• Knowledge and experience with Diameter/SCTP networks and protocols
• Knowledge and experience with protocols such as RADIUS, GTP-C, GTP-U, Diameter, MAP, S6a
• Experience with protocol analyzer tools like Wireshark, Astelia, and ability to use them to troubleshoot networks errors/problems for the mentioned protocols
• Experience with ETSI NFV architecture and solutions
• Familiar with MVNO/MVNE/MVNA architecture(s) and landscape
• English proficiency mandatory, other languages are a plus
• Degree in Telecom Engineering or Computer Science or equivalent experience

Nice to Have

• +8 years working on telecoms, designing and implementing mobile core networks
• +3 years in a telecom strategy role
• Experience in 5G Core design, implementation and operation
• Previous experience with Nokia and Affirmed Networks EPC products

Benefits

What we offer?

• CLT contract — enjoy job stability and reliable benefits that value your work
• Quarterly performance bonuses to reward your hard work and achievements
• Meal allowance paid into Caju card — R$100 per working day
• Health insurance with SulAmérica — 50% covered by the company
• Daycare allowance provided to mothers with children under 3 years old — R$500 per month per child
• Kickstart your journey with an exciting welcome onboarding trip to one of our European offices (Lisbon or Berlin)
  

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.