OverviewWe are looking for a senior Network Optimization Engineer to own radio performance and capacity across complex live 4G/5G networks in Europe. The role focuses on end‐to‐end RAN optimization, advanced troubleshooting, and driving KPI and user experience improvements in live networks. We are looking for a senior Network Optimization Engineer to own radio performance and capacity across complex live 4G/5G networks in Europe. The role focuses on end‐to‐end RAN optimization, advanced troubleshooting, and driving KPI and user experience improvements in live networks. You will act as a trusted SME for customers and projects, lead technical discussions, contribute to RAN evolution initiatives, and support the adoption of next‐generation technologies such as ORAN, Cloud RAN, vRAN, and Massive MIMO. This is a senior individual contributor role with strong technical and customer impact. ResponsibilitiesOptimize end-to-end Network, delivering activities for 4G/5G networks, ensuring KPI stability, performance growth, and superior end-user experience. Act as SME for assigned customers and projects, leading technical discussions, governance calls, and executive-level updates on radio performance. Design and execute traffic, capacity, mobility, neighbor, and carrier aggregation optimization strategies across multiple layers and RATs. Perform advanced RAN troubleshooting and root cause analysis using KPIs, Layer 3 logs, PCAPs, drive tests, and feature/parameter correlation. Deliver radio audits, benchmarking, and performance assessments, including Umlaut/P3 and regulatory validations. Define RAN strategies, recommend feature rollouts, and implement special and mass-event optimization plans. Evolve NPO RAN processes, methods, and tools, driving continuous improvement in how optimization is delivered. Be able to work with cross-functional teams, R&D, Care, PM, FM, OMS, to resolve complex RAN issues and ensure delivery excellence. Deliver using influence, plan activities, delegate tasks within project teams, and mentor junior engineers. Contribute to stream-level initiatives, PoCs, and capability development, staying current on emerging RAN technologies such as ORAN, Cloud RAN, vRAN, Massive MIMO, Small Cells, DAS, FWA, Network slicing and Private 5G. Key Skills And Experience10+ years of advanced experience in Radio Network Optimization, with strong expertise in 5G and 4G on the latest Nokia SW/HW releases. Deep knowledge of at least two RATs, including parameters, features, tuning, KPI frameworks, and RAN troubleshooting methodologies. Proven track record of owning complex optimization activities and delivering measurable performance improvements. Strong understanding of RAN architecture, radio features, and performance drivers across multilayer and inter-RAT scenarios. Hands-on capability with NetAct and radio tools, plus Layer 3 and PCAP/Wireshark analysis. Experience with drive test and crowdsourced data, benchmarking, spectrum refarming, 2G/3G sunset strategies, and post-optimization cycles. Excellent customer communication skills, comfortable in technical and governance forums, supported by strong reporting and visualization abilities. Ability to lead through influence, structure work, and elevate team performance. Nice to HaveMultivendor RAN experience, for example Ericsson, Samsung or Huawei. Exposure to Cloud RAN environments and advanced analytics platforms. Experience with ORAN ecosystems, Private Networks, Small Cells, DAS, FWA, and advanced antenna systems. Interest or experience in automation, AI, and ML applied to RAN optimization, for example Python workflows, AI-assisted analysis, or self-optimizing network concepts. About UsNokia is a global leader in connectivity for the AI era. With expertise across fixed, mobile and transport networks, powered by the innovation of Nokia Bell Labs, we're advancing connectivity to secure a brighter world. Learn more about life at Nokia. Our recruitment processWe act inclusively and respect the uniqueness of people. Our employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law. We are committed to a culture of inclusion built upon our core value of respect. If you're interested in this role but don't meet every listed requirement, we still encourage you to apply. Unique backgrounds, perspectives, and experiences enrich our teams, and you may be just the right candidate for this or another opportunity. The length of the recruitment process may vary depending on the specific role's requirements. We strive to ensure a smooth and inclusive experience for all candidates. Discover more about the recruitment process at Nokia. About The TeamSome of our benefits in Portugal : Flexible working arrangements and additional flex benefits to support work–life balance A minimum of 90 days of Maternity and Paternity Leave, with the option to return to work within a year following the birth or adoption of a child (based on eligibility) Medical and life insurance plan, plus paid sick leave for added security Meal allowance to support daily needs Car allowance based on eligibility Well-being programs to support your mental and physical health Opportunities to engage with Nokia Employee Resource Groups (NERGs), as well as access to mentors, coaches, and Employee Growth Solutions A learning culture that promotes continuous personal and professional growth – for your role and beyond#J-18808-Ljbffr