Mobile Core OSS Engineer

Wireless Logic

MOBILE CORE ENGINEER – SUBSCRIBER DATA MANAGEMENT & SIGNALING - COM4 ABOUT US Com4 is a leading global service provider in the Internet of Things (IoT), also known as “Machine to Machine” (M2M). We offer mobile data subscriptions tailored to our customers' applications in their connected devices and equipment. This connectivity enables innovative solutions across many sectors, such as energy, security, transport, and welfare technologies. Com4 is a significant player in the Norwegian telecom market, with a 50% market share in the IoT segment. Through roaming agreements, we offer IoT communication on 2G/3G/4G/5G across 700 networks globally. As a Mobile Virtual Network Operator (MVNO), Com4 has its own mobile core network and a portfolio of Business Support Systems (BSS) and Operational Support Systems (OSS). A central element of our core network is our IP/MPLS network, which connects network elements across our various data centers and forms the interface toward our customers and partners/providers of peering, IP Transit, and IPX/GRX. We have solutions for several VPN variants adapted for business customers with dedicated APNs and diverse communication needs. We make extensive use of MPLS in both IP and mobile network elements for efficient service production. FW and NAT solutions are important security elements in our design. The services we produce meet high requirements for uptime, and solution flexibility is a central part of the offering we provide to customers. Moving forward, the network is being further developed to support 5G SA mobile services, scale, and increase the degree of automation. ABOUT THE ROLE We are looking for a Mobile Core Engineer responsible for subscriber data systems across legacy and 5G, ensuring consistency and correct behavior during authentication, provisioning, and mobility.  We will consider both senior candidates with extensive experience and juniors with shorter experience, and can adapt tasks and responsibilities in line with the candidate's profile. We are looking for someone who is solution-oriented and fearless when facing complicated tasks. We value good cooperation and communication skills, while it is also crucial to work independently and proactively within your own field of expertise. To further strengthen our technical team, we are looking for an Mobile Core Engineer – Subscriber Data Management & Signaling who has competence or experience in several of the following areas, as well as an interest in learning more: * Mobile Core network architecture (3GPP releases/GSMA/IETF standards)  * Mobile Network functions across different technologies - 5G SA/NSA and 4G EPC  * Interfaces with adjacent systems in a mobile operator environment  * Operate and maintain subscriber systems: HLR / HSS/UDM/UDR & Policy control systems SPR/ PCF / Charging systems.  * Develop and maintain signaling routing on the STPs, DRAs, SCP & SEPP including NRF & NSSF for 5G SA.  * Support subscriber provisioning and lifecycle management   * Ensure data consistency across multi-IMSI / multi-SIM environments  * Support integration with other core network functions  * Technical vendor management, including feature requirements specification and follow-up  * Familiarity with protocols like SIGTRAN, Diameter, Radius, and HTTP.  * Monitor platform performance and ensure high availability   * Collaborate with vendor for onboarding new network functions  * Good understanding of cloud environments (Telco Cloud) and virtualization.  * Knowledge of APIs is a plus  * Experience in virtualization and Kubernetes is a plus  * Knowledge of roaming and interconnect scenarios   * Basic scripting or database querying (SQL)  * IoT experience is beneficial but not required  * Support automation initiatives for operational efficiency  * Strong teamworking and collaboration skills  * Customer-focused mindset with strong communication abilities  * Participate in an on-call rotation, troubleshoot issues, and drive incident resolution to minimize downtime. Conduct post-mortems and implement corrective actions to enhance reliability.  WE OFFER Com4 is a highly attractive workplace. We have a flexible and growth-oriented entrepreneurial culture, while offering security and competitive terms. We have an excellent working environment—here you will find pleasant and competent colleagues in a team that helps each other and works together as one. We place great emphasis on the social aspect, including regular events and celebration of successes with company trips, etc. We offer state-of-the-art premises in the tech hub that has emerged at Løren/Hasle-Linje. We expect independence and commitment from you, and in return offer flexibility regarding home office and the choice of work tools that suit you. ABOUT THE EMPLOYER Com4 is a mobile operator offering communication services for the growth market of the Internet of Things (IoT). Com4 is a company based in Oslo with solid finances after many years as a market winner in Norway. Our owner is the Wireless Logic Group in the UK, a recognized leader in the Managed IoT industry globally, with 12 million SIMs worldwide and operations in more than 10 countries.  #LI-Hybrid #LI-CC1 We know the world has changed, and we want to offer our employees the chance to collaborate at our unique office spaces, whilst enjoying the convenience of working from home. We've adopted a hybrid working approach to give more flexibility on where and how we work. You'll find out more about what this means for this role during the recruitment process, but we are currently excited to have our employees experience our office culture as much as possible.   Wireless Logic Group unites and brings people together. We accomplish this when we lead with a lens of diversity, equity, and inclusion in everything we do. As a global company that drives culture we aim to reflect the world’s diverse voices both internally and externally to ensure success in our mission.   By applying for this role, you are consenting for us to hold and process your data in compliance with the General Data Protection Regulations. If you have any questions or wish to exercise your right to access, erase or restrict the holding or processing of your data please contact us (recruitment@wirelesslogic.com) and we will respond to your query as soon as possible.

Wireless Logic

BILLING ENGINEER – COM4 ABOUT US Com4 is a leading global service provider in the Internet of Things (IoT), also known as “Machine to Machine” (M2M). We offer mobile data subscriptions tailored to our customers' applications in their connected devices and equipment. This connectivity enables innovative solutions across many sectors, such as energy, security, transport, and welfare technologies. Com4 is a significant player in the Norwegian telecom market, with a 50% market share in the IoT segment. Through roaming agreements, we offer IoT communication on 2G/3G/4G/5G across 700 networks globally. As a Mobile Virtual Network Operator (MVNO), Com4 has its own mobile core network and a portfolio of Business Support Systems (BSS) and Operational Support Systems (OSS). ABOUT THE ROLE We are looking for a Billing Engineer for our BSS team, motivated to ensure that the business critical billing is performed with high quality on time. This is a vital role for the company. You will be part of a BSS team responsible for CMP & Billing, and you will report to the Head of BSS. As part of this team you will ensure revenue assurance, handle day-to-day operations, and help shape product development to automate and scale these complex data pipelines. In this role you will work tightly with finance, sales, data engineering, product, and customer operations. We are looking for a senior candidate, but mid-level professionals with the right qualifications are encouraged to apply. You don’t need a background in Telecom or IoT to be successful, that can be learned. What matters most is your ability to solve problems and drive results. We value strong collaboration, open communication, and a proactive mindset where you can take ownership of your work. While the skills below are helpful, we prioritize your potential and eagerness to learn; this role offers significant room for growth.  To further strengthen our technical team, we are looking for a Billing Engineer who has competence or experience in several of the following areas, as well as an interest in learning more: * Experience with billing, revenue assurance or managing complex data. * Knowledge of automatic billing and pricing systems, with experience managing invoicing operations, rating engines, and managing high-volume data transactions. * Familiarity with the telecom value chain, charging models, or CDR processing. * Bonus points for knowing TM Forum frameworks (eTOM, SID, TAM). * A developer mindset and background is considered a plus, but not a must. If you like to develop your own solutions, it is good to know that you will have powerful AI tools at your disposal (including Claude) and macs capable of system development. * Some proficiency in IT development, system operations, and automation tools (including SQL and scripting languages), for either collaborating with Com4 developers or creating efficiency autonomously. * An interest or background in billing product management, such as adapting price plans to offerings. At Com4 this means IoT cellular data products or broadband solutions like Fixed Wireless Access or new satellite services like Starlink reselling. * A proactive approach, you can drive projects forward without being micromanaged. A positive, solution-oriented attitude when facing new challenges. * Excellent teamwork skills and the ability to work across different departments in Com4. You can effectively communicate with B2B customers, colleagues and stakeholders. * Fluency in Norwegian and English. WE OFFER Com4 is a highly attractive workplace. We have a flexible and growth-oriented entrepreneurial culture, while offering security and competitive terms. We have an excellent working environment—here you will find pleasant and competent colleagues in a team that helps each other and works together as one. We place great emphasis on the social aspect, including regular events and celebration of successes with company trips, etc. We offer state-of-the-art premises in the tech hub that has emerged at Løren/Hasle-Linje. We expect independence and commitment from you, and in return offer flexibility regarding home office and the choice of work tools that suit you. ABOUT THE EMPLOYER Com4 is a mobile operator offering communication services for the growth market of the Internet of Things (IoT). Com4 is a company based in Oslo with solid finances after many years as a market winner in Norway. Our owner is the Wireless Logic Group in the UK, a recognized leader in the Managed IoT industry globally, with 12 million SIMs worldwide and operations in more than 10 countries.  #LI-Hybrid #LI-CC1 We know the world has changed, and we want to offer our employees the chance to collaborate at our unique office spaces, whilst enjoying the convenience of working from home. We've adopted a hybrid working approach to give more flexibility on where and how we work. You'll find out more about what this means for this role during the recruitment process, but we are currently excited to have our employees experience our office culture as much as possible.   Wireless Logic Group unites and brings people together. We accomplish this when we lead with a lens of diversity, equity, and inclusion in everything we do. As a global company that drives culture we aim to reflect the world’s diverse voices both internally and externally to ensure success in our mission.   By applying for this role, you are consenting for us to hold and process your data in compliance with the General Data Protection Regulations. If you have any questions or wish to exercise your right to access, erase or restrict the holding or processing of your data please contact us (recruitment@wirelesslogic.com) and we will respond to your query as soon as possible.

Wireless Logic

About Us  Com4 is a leading global service provider within the Internet of Things (IoT), also known as "Machine to Machine" (M2M). We offer global connectivity and mobile data tailored to our customers' applications in their connected devices and equipment. This connectivity enables innovative solutions across multiple sectors, such as energy, security, transport, and e-health technologies.  Com4 is a major player in the Norwegian telecom market, holding a 50% market share within the IoT segment. We also have a global customer portfolio. Through roaming agreements, we provide IoT communication across 2G/4G/5G, LTE-M, and NB-IoT on 700 networks globally.  Furthermore, Com4 is a significant supplier of communication hardware, such as routers and communication modules, which are complemented by various types of our own internally developed SIM cards featuring specialized applications and functionality.  We possess expertise in globally leading HW and SIM solutions for Cellular IoT. Combined with our mobile service capabilities, this allows us to assist customers throughout their entire product development lifecycle—from the initial design phase and piloting, to regional rollout and scaling up to hundreds of thousands of devices globally.  About the Role  We are currently seeking an IoT Solutions Expert for a full-time position at our offices in Oslo. We welcome applicants with both extensive or shorter experience, and the role will be tailored to the right candidate's background.  As an IoT Solution Expert, you will hold a broad and leading technical role within a highly competent environment specializing in IoT solutions based on cellular and satellite connectivity. You will play a central part in driving innovation aligned with customer requirements and market developments. You will engage in direct dialogue with globally leading suppliers of HW, SIMs, and solutions for eSIM management. Additionally, you will work closely with customers to develop new and innovative solutions for IoT connectivity. Our customers' products are utilized worldwide and include solutions within EV charging, smart metering, payment terminals, tracking (animals, assets, bicycles, cars), as well as various industrial applications.  To succeed, you must be an expert who collaborates well across a broad technical and commercial environment. We are looking for someone who is solution-oriented and undaunted by complex tasks. We value strong cooperation and communication skills, while it is equally essential that you can work independently and proactively within your own field of expertise.  Key Responsibilities:  * Technical Advisory & Design: Work closely with customers to analyze requirements, as well as design and architect innovative IoT solutions that meet future demands for security and scalability.  * Vendor Dialogue & Partnerships: Co-operate with globally leading suppliers of IoT hardware, modules, chipsets, and platforms for eSIM/eUICC management.  * SIM Portfolio Development & Management: Collaborate with technical teams and suppliers to develop new SIM and eSIM products, as well as manage the existing SIM and eSIM solutions that Com4 offers today.  * Testing & Lab Work: Evaluate, test, and troubleshoot hardware, SIM cards, and eSIM profiles to ensure optimal performance and network compatibility.  * Automation & Tool Development: Develop internal support tools, scripts, and test scripts to automate workflows and optimize our delivery processes.  * Technological Scouting: Stay up-to-date on trends within IoT, 5G, and satellite technology to ensure Com4 remains at the forefront of market developments.  * Presales: Actively support commercial teams by providing technical advisory on IoT solutions during presales and tender processes.  Desired Qualifications:  * Education: Bachelor's or Master's degree in data communication, electronics, cybernetics, IT, computer science, or equivalent (relevant experience may compensate for a lack of formal education).  * Experience: Experience from a mobile network operator (telco), electronics development, network architecture, or the IT consulting industry is a major advantage.  * Expertise: Strong understanding of, and interest in, specialized hardware, modules, and SIM/eSIM technology.  * Technical Skills: Experience with troubleshooting embedded devices, as well as general programming or scripting skills (e.g., Python, Bash, or similar) for automation purposes.  * Languages: Strong communication skills in Norwegian (or another Scandinavian language) and English, both written and spoken.  What We Offer  Com4 is a highly attractive workplace. We feature a flexible, growth-oriented entrepreneurial culture balanced with stability and competitive terms. We pride ourselves on an excellent working environment—here you will find friendly, highly competent colleagues in a team that supports one another and operates as a unit. We place great emphasis on social activities, including regular events and celebrating our successes with company trips and gatherings.  We offer modern offices located in the growing tech hub at Løren/Hasle-Linje. We expect independence and commitment from you, and in return, we offer flexibility regarding remote work (home office) and your choice of work tools.  About the Employer  Com4 is a mobile operator dedicated to providing communication services for the fast-growing Internet of Things (IoT) market. Based in Oslo, the company boasts strong financial stability after many years as a market leader in Norway. Our owner is the UK-based Wireless Logic Group, a global leader in the industry with 20 million SIMs globally and operations spanning more than 12 countries. We know the world has changed, and we want to offer our employees the chance to collaborate at our unique office spaces, whilst enjoying the convenience of working from home. We've adopted a hybrid working approach to give more flexibility on where and how we work. You'll find out more about what this means for this role during the recruitment process, but we are currently excited to have our employees experience our office culture as much as possible.   Wireless Logic Group unites and brings people together. We accomplish this when we lead with a lens of diversity, equity, and inclusion in everything we do. As a global company that drives culture we aim to reflect the world’s diverse voices both internally and externally to ensure success in our mission.   By applying for this role, you are consenting for us to hold and process your data in compliance with the General Data Protection Regulations. If you have any questions or wish to exercise your right to access, erase or restrict the holding or processing of your data please contact us (recruitment@wirelesslogic.com) and we will respond to your query as soon as possible.