Network and Firewall Engineer

Join our dynamic team as a Senior Network Engineer at inetum2, where your expertise will play a crucial role in designing, implementing, and maintaining our network infrastructure. You will collaborate with cross-functional teams to ensure optimal performance, security, and scalability of our network services.

As a Senior Network Engineer at Inetum, you will play a pivotal role in ensuring the reliability, efficiency, and security of our clients' network infrastructures within a collaborative shared services environment. You will be tasked with the operation and maintenance of LAN/WAN, datacenter, and security components around the clock. Your expertise will be crucial in managing complex incidents (L2/L3) and implementing necessary changes and upgrades.Key Responsibilities:Operations & Monitoring: Oversee the seamless operation of LAN/WAN/WLAN, datacenter networks, and customer interconnections. Monitor network devices (e.g., switches, routers, firewalls, VPNs, proxies, load balancers) and effectively manage alerts through diagnosis, prioritization, resolution, or escalation.Incident Management (L2/L3): Take charge of complex incident resolution, conducting advanced troubleshooting (logs, packet captures, traces), and keeping internal teams and clients informed of progress. Your contributions will help minimize recurring issues through preventive measures and root cause analysis.Changes & Projects: Prepare, validate, and execute network changes (upgrades, migrations, patching). Document changes and actively participate in architecture evolution projects. You will execute high-impact interventions, often outside regular business hours.On-call & Out-of-hours Support: Provide 24/7 on-call support as per the rotation schedule, promptly addressing critical incidents to ensure service continuity and adherence to SLA commitments.Documentation & Continuous Improvement: Maintain comprehensive technical documentation and runbooks, facilitate knowledge sharing, and contribute to the enhancement of processes, automation, standardization, and optimization of infrastructure for improved performance, resilience, and security.

About Us1GLOBAL is a leading technology-based mobile communications provider, specializing in global connectivity solutions for both enterprises and consumers. Our operations are supported by an advanced telecom platform, featuring our proprietary global mobile core network and in-house developed eSIM technology, alongside a comprehensive portfolio of telecom licenses. 1GLOBAL is fully regulated in 40 countries around the world.We proudly serve many of the world’s foremost banks, enterprises, and digital-first businesses—including neo-banks, prominent fast-moving consumer goods companies, travel industry leaders, and payment service providers. Currently, we connect over 70 million people and devices globally, empowering our clients to launch, scale, and innovate confidently within the mobile ecosystem.As a profitable and rapidly expanding business, we project full-year revenues exceeding US$200 million in 2025, with profits exceeding US$25 million. Our strong cash flows enable us to continually invest in infrastructure, platform innovation, and global expansion. Recent years have marked a transformative phase in our growth, highlighted by significant enterprise and mass-consumer client acquisitions that have propelled us into a global mobile connectivity powerhouse, uniquely positioned to help consumer brands successfully offer telecommunications services.Founded in 2022 by seasoned technology entrepreneurs, Hakan Koç and Pyrros Koussios, 1GLOBAL has rapidly positioned itself as a European technology leader shaping the future of global telecommunications. Operating as a fully regulated Mobile Virtual Network Operator (MVNO) across 12 countries and as a regulated telecom operator in an additional 28 markets, our headquarters are located in the Netherlands, complemented by world-class R&D hubs in Lisbon, Berlin, and São Paulo. Together, our team of nearly 500 experts across 15 countries is driven by a common goal: to redefine global mobile connectivity through technological innovation, scale, and execution excellence.About the TeamWe are seeking a talented and motivated Senior IP Network Engineer to join our IP Networks Team. In this pivotal role, you will have the opportunity to design, build, and manage the future landscape of our global IP infrastructure. If you are passionate about cutting-edge networking technologies, including Software-Defined Networking (SDN), and are dedicated to creating scalable, secure, and high-performance network solutions, we want to hear from you.As a Senior IP Engineer / Architect, you will play a key role in shaping and evolving our global IP backbone, ensuring it facilitates seamless interconnections with Mobile Network Operators (MNOs) and spans cross-continental data centers. You will utilize SDN technologies to design and optimize network performance.

About the Role Inetum is hiring a Network Engineer Analyst for its Lisbon office. This role focuses on designing, implementing, and maintaining network solutions tailored to client requirements. What You Will Do Design network architectures to support client needs Implement and configure network systems Maintain and troubleshoot network infrastructure Work closely with a team of experienced professionals on client projects Work Environment Join a group that values collaboration and technical expertise. Expect to contribute to a range of projects and interact with colleagues who bring deep experience in network engineering.

At Inetum, we are dedicated to leveraging technology to enhance lives and facilitate genuine business transformation. We are seeking a talented Network Engineer to become a vital part of our global team, focusing on the design, security, and operational excellence of the networks that uphold our international presence.If you are eager to engage with state-of-the-art infrastructures in a vibrant, multicultural setting, this opportunity is perfect for you.Key Responsibilities:Collaborate with an international team managing Network & Security operations for the Inetum Datacenter and global corporate networks.Design, operate, and maintain enterprise-level network infrastructure, firewalls, and network services.Conduct proactive tasks to ensure optimal availability, performance, and reliability of WAN, LAN, VOIP, and related services.Oversee and enhance critical services including DNS, VPN, routing, switching, and security policies.Implement complex IT projects across WAN, LAN, VOIP, server, and network platforms.Provide secondary support for broader network functions at the enterprise level.Deliver exceptional support to both local and remote end-users.Maintain precise documentation and contribute to knowledge base improvements.Make daily operational decisions to ensure the continuity and security of network services.

Join our innovative team as a Senior Network Engineer in Product Development, where you will leverage your expertise to enhance our next-generation network solutions. Your role will involve working with industry-standard practices, interfaces, operating systems, and protocols including DOCSIS 3.0/3.1, SIP, and PacketCable.We seek candidates with a robust understanding of TCP/IP, IPv6, BGP, OSPF, Multicast, and MPLS, with working knowledge of IS-IS. Your extensive experience in Ethernet and IP services such as Ethernet Private Line, Private LAN, Dedicated Internet, and Managed Router will be crucial for success in this role.As a Subject Matter Expert, you will support Layer 2 and Layer 3 protocols essential for Business Services, providing guidance on OAM and CFM, as well as RFC2544, Y.1564, and Y.1731.This position is centered around Network Automation, Software Defined Networks, and Network Virtualization within our Commercial Services line of business. You will play a key role in evaluating, designing, trialing, and deploying our next-generation products and services.Your hands-on experience with national Metro-E networks across multiple vendors, ideally within a service provider environment, will be beneficial. Collaborating with architecture, business units, service delivery, and operations teams, you will drive the ongoing evolution and support of our existing platform.The ideal candidate will possess practical knowledge of managed services for customer network implementations.

Join Inetum as a Network Engineer where you will be an integral part of our innovative technology team. You will design, implement, and manage our network infrastructure, ensuring optimal performance and security. Bring your technical expertise to a dynamic environment where your contributions will directly impact our operations and clients.

As a Production Network Engineer at Inetum, you will play a vital role in ensuring the seamless operation, performance, and security of network infrastructures for multiple clients within our shared services team. You will manage and maintain LAN/WAN, datacenter, and security components in a 24/7 production environment, addressing complex incidents (L2/L3) and executing changes and upgrades to enhance service delivery. Key Responsibilities:Operations & Monitoring: Oversee the effective functioning of LAN/WAN/WLAN, datacenter networks, and customer interconnections. Monitor network devices including switches, routers, firewalls, VPNs, proxies, and load balancers, managing alerts through diagnosis, prioritization, resolution, or escalation.Incident Management (L2/L3): Take the lead on complex incidents, performing advanced troubleshooting using logs, packet captures, and traces. Communicate progress to internal teams and clients while contributing to the reduction of recurring incidents through preventive measures and root cause analysis.Changes & Projects: Prepare, validate, and implement network changes such as upgrades, migrations, and patching. Produce thorough change documentation and participate in architecture evolution projects, executing high-impact interventions, often outside of regular business hours.On-call & Out-of-hours Support: Provide 24/7 on-call support in rotation, responding to critical incidents to ensure service continuity and adherence to SLA requirements.Documentation & Continuous Improvement: Maintain technical documentation and runbooks, foster knowledge sharing, and contribute to process improvement, automation, standardization, and optimization of infrastructure for enhanced performance, resilience, and security.

inetum2 is seeking a highly skilled Senior Network and Cloud Infrastructure Architect to join our innovative team in Lisbon. In this pivotal role, you will be responsible for designing and implementing robust cloud infrastructure solutions that meet the needs of our diverse clientele. You will leverage your expertise in networking and cloud technologies to ensure optimal performance, security, and scalability of our systems.As a Senior Architect, you will collaborate closely with cross-functional teams to deliver top-notch solutions that drive business success. Your ability to communicate complex concepts clearly and your passion for technology will be key to helping us achieve our strategic objectives.

Join our dynamic team at inetum2 as a Senior Network-Attached Storage (NAS) Administrator, where you will play a crucial role in managing and optimizing our NAS infrastructure. You will be responsible for the configuration, maintenance, and support of NAS systems to ensure optimal performance and reliability.

About Us1GLOBAL is a cutting-edge global mobile communications provider that delivers unparalleled connectivity solutions to both enterprises and consumers. Our robust telecom platform is powered by our proprietary global mobile core network, advanced in-house developed eSIM technology, and an extensive portfolio of telecom licenses. Operating as a fully regulated telecommunications provider across 40 countries, we ensure compliance and quality in every service we offer.We proudly serve many of the world's top banks, enterprises, and digital-first businesses, including neo-banks, leading fast-moving consumer goods companies, travel industry leaders, and payment service providers. Currently, 1GLOBAL connects over 70 million people and devices globally, empowering our clients to innovate and scale confidently within the mobile ecosystem.1GLOBAL is a rapidly growing and profitable company, with projected full-year revenues exceeding US$200 million by 2025 and profits of over US$25 million. Our strong cash flows enable continuous investment in infrastructure, platform innovation, and global expansion. Recent years have marked a transformative phase in our journey, with significant enterprise and mass-consumer client acquisitions propelling us forward as a global mobile connectivity leader, designed to assist consumer brands in successfully offering telecommunications services.Founded in 2022 by seasoned technology entrepreneurs Hakan Koç and Pyrros Koussios, 1GLOBAL has quickly established itself as a European technology pioneer shaping the future of global telecommunications. Headquartered in the Netherlands, with world-class R&D centers in Lisbon, Berlin, and São Paulo, our dedicated team of nearly 500 experts across 15 countries is united by a single vision: to redefine global mobile connectivity through technological innovation, scalability, and operational excellence.About the TeamWe are in search of a detail-oriented and proactive team leader who excels at solving service challenges and is devoted to continuous improvement. In this pivotal role, you will enhance our technical infrastructure by fostering collaboration between teams and addressing process and technical gaps. Your main objectives will include ensuring operational stability, managing team workloads, and driving ongoing enhancements across our platforms.This position requires close collaboration with Engineering and Product teams to maintain alignment with product roadmaps and technical advancements, ensuring that the team is well-informed and prepared for upcoming developments.

About the Role iCapital Network is seeking a dynamic Head of Security Engineering to spearhead and enhance our security engineering operations in a regulated financial services environment. This pivotal role merges deep technical expertise, practical operational skills, and effective team leadership to ensure our security architecture, tools, and processes are scalable, robust, and compliant with regulatory standards. In this role, you will oversee a team of security engineers while actively engaging in technical challenges, including leading incident investigations and designing secure architectures. You will collaborate closely with Engineering, DevOps, Infrastructure, and Technology/Development teams to integrate security throughout the software development lifecycle and within cloud infrastructures.

Join our innovative team at inetum2 as a Senior Data Engineer, where you will play a pivotal role in designing and implementing data solutions that drive business insights and enhance decision-making processes. You will leverage your expertise in data architecture, ETL processes, and database management to build robust data pipelines and ensure data integrity across various platforms.

About Us1GLOBAL is a leading technology-focused global mobile communications provider, offering cutting-edge connectivity solutions for both enterprises and consumers. Our advanced telecom platform is underpinned by our proprietary global mobile core network, state-of-the-art in-house developed eSIM technology, and a comprehensive portfolio of telecom licenses. Operating across 40 countries, 1GLOBAL is a fully regulated telecommunications provider.We cater to many of the world’s foremost banks, enterprises, and digital-first businesses, including neo-banks, global fast-moving consumer goods companies, travel giants, and payment service providers. Currently, we connect over 70 million people and devices worldwide, empowering our clients to launch, scale, and innovate confidently in the mobile ecosystem.1GLOBAL is a profitable and rapidly growing entity, with projected full-year revenues exceeding US$200 million and profits over US$25 million by 2025. Our strong cash flows support ongoing investments in infrastructure, platform innovation, and global expansion. Recent successes have marked a pivotal phase in our evolution into a global mobile connectivity powerhouse, designed to enable consumer brands to successfully deliver telecommunications services to their clientele.Founded in 2022 by visionary technology entrepreneurs Hakan Koç and Pyrros Koussios, 1GLOBAL has quickly established itself as a European technology leader shaping the future of global telecommunications. With headquarters in the Netherlands and world-class R&D centers in Lisbon, Berlin, and São Paulo, our team of nearly 500 experts across 15 countries is united by a single ambition: to redefine global mobile connectivity through innovation, scale, and operational excellence.About the TeamAs a member of the Network Engineering team within the Voice and Services functional area, you will play a vital role in proposing, analyzing, and defining the requirements for both new and existing voice services and systems. Your responsibilities will include preparing, designing, testing, and implementing new solutions or modifications to the existing service portfolio. You will also define and support the technology evolution roadmap for systems within your functional area.Additionally, you will collaborate with other functional areas on cross-functional projects.About the RoleWork alongside other Networks teams to define and manage projects for the delivery of voice services.

Role Overview Cato Networks is hiring a Commercial Account Executive in Lisbon. This position focuses on growing our customer base and increasing sales within the cloud networking sector. What You Will Do Connect with prospective clients to learn about their business needs Showcase how Cato Networks' solutions can support their goals Contribute directly to the company’s growth by identifying and closing new business opportunities Location Based in Lisboa, Lisbon, Portugal.

inetum2 seeks an Application Production Infrastructure & Network Consultant based in Lisbon. This position centers on strengthening IT infrastructure and maintaining dependable network solutions for the organization. Key responsibilities Apply technical expertise to improve application production infrastructure Assist with supporting and enhancing network solutions Collaborate with colleagues to ensure reliable IT services Location This role is located in Lisbon.

About Us1GLOBAL is a pioneering mobile communications provider that leverages advanced technology to offer unparalleled global connectivity solutions for both enterprises and consumers. Our state-of-the-art telecom platform encompasses a proprietary global mobile core network, cutting-edge eSIM technology developed in-house, and a comprehensive array of telecom licenses. Operating as a fully regulated telecommunications entity across 40 countries, we are positioned as a leader in the industry.We cater to some of the world's foremost banks, innovative enterprises, and dynamic digital-first businesses, including neo-banks, global fast-moving consumer goods firms, travel industry leaders, and payment service providers. Currently, 1GLOBAL connects over 70 million individuals and devices worldwide, empowering our clients to launch, scale, and innovate confidently within the mobile ecosystem.1GLOBAL is a rapidly expanding and profitable organization, with projected full-year revenues surpassing US$200 million and profits exceeding US$25 million by 2025. Our robust cash flow supports ongoing investments in infrastructure, platform innovation, and global expansion. Recent years have been transformative as we continue to secure major enterprise and consumer client contracts, solidifying our status as a global mobile connectivity powerhouse.Founded in 2022 by seasoned technology entrepreneurs, Hakan Koç and Pyrros Koussios, 1GLOBAL is quickly establishing itself as a European technology trailblazer shaping the future of telecommunications. With our headquarters in the Netherlands and R&D hubs in Lisbon, Berlin, and São Paulo, our team of nearly 500 skilled professionals across 15 countries is committed to redefining global mobile connectivity through technological innovation and operational excellence.About the TeamAs part of the Network Engineering team within the Signalling function, you will be responsible for analyzing, proposing, and defining the requirements for both new and existing services and systems related to signalling routing and subscriber data management. This role involves the design, testing, and implementation of new solutions or modifications to our existing product portfolio. You will also contribute to the technology evolution roadmap for systems within your functional area and collaborate with other teams on cross-functional projects.

About Us1GLOBAL is a pioneering technology-driven mobile communications provider, dedicated to offering global connectivity solutions for both enterprises and consumers. Our robust telecom platform features a proprietary global mobile core network, in-house developed eSIM technology, and a diverse array of telecom licenses, positioning 1GLOBAL as a fully regulated telecommunications provider across 40 countries worldwide.We cater to numerous esteemed clients, including leading banks, enterprises, and innovative digital-first businesses such as neo-banks, global fast-moving consumer goods firms, travel leaders, and payment service providers. Currently, 1GLOBAL connects over 70 million people and devices globally, empowering our customers to launch, scale, and innovate confidently within the mobile ecosystem.1GLOBAL is a profitable and rapidly growing organization. With projected revenues exceeding US$200 million in 2025 and profits surpassing US$25 million, we are committed to generating strong cash flows that support our growth, enabling continuous investment in infrastructure, platform innovation, and global expansion. Recent years have marked a pivotal period in our journey, with significant enterprise and mass-consumer client acquisitions propelling our transformation into a global mobile connectivity powerhouse, purpose-built to assist consumer brands in realizing their ambitions to offer telecommunications services to their clients.Founded in 2022 by seasoned technology entrepreneurs Hakan Koç and Pyrros Koussios, 1GLOBAL has swiftly established itself as a European technology leader, shaping the future of global telecommunications. We operate as a fully regulated Mobile Virtual Network Operator (MVNO) in 12 countries and as a licensed telecom operator in an additional 28 markets. Headquartered in the Netherlands, with cutting-edge R&D centers in Lisbon, Berlin, and São Paulo, our team of nearly 500 experts across 15 countries share a unified goal: to redefine global mobile connectivity through technology, scale, and exceptional execution.About the TeamAs a Network Solution Architect within the Network Engineering department, you will serve as a Solution Architect for new products, services, and technologies at 1GLOBAL. Your role will involve close collaboration with internal and external customers, as well as various technical stakeholders and vendors, to shape, design, test, and implement innovative solutions.Your responsibilities will include leading the requirements analysis process, engaging with all relevant stakeholders to establish a refined and clear scope, thereby facilitating the creation, documentation, and planning of effective solutions.

Join Altersolutions as a Senior Data Engineer and play a pivotal role in shaping the future of data management. In this dynamic position, you will leverage your expertise to design, develop, and maintain robust data pipelines and architectures, ensuring seamless data flow and accessibility across various platforms. You will collaborate with cross-functional teams to transform data into actionable insights, driving decision-making processes and enhancing business outcomes.