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Principal Engineer
SG
Job Description
Hiring a skilled Network Engineer to join our Radio Technology team, driving the design, deployment, and evolution of next-generation mobile networks.
This role combines deep technical expertise in 4G/5G RAN, hands-on rollout experience, and a forward-looking mindset toward AI-driven and Open RAN network transformation.
MAJOR DUTIES AND RESPONSIBILITIES
• Act as a domain expert in RAN design and optimization, focusing on 5G architecture, parameter planning, and network tuning.
• Collaborate closely with Antina site rollout, integration, and field validation of mobile base stations.
• Familiar with both indoor and outdoor 4G/5G base stations deployment and integration of both indoor and outdoor.
• Collaborate with internal stakeholders and infrastructure partners to manage rollout activities, site integration, and performance validation.
• Conduct end-to-end feature testing, lab trials, and user acceptance testing for firmware, software upgrades, and new network capabilities.
• Familiar with the UE test tools and perform drive test to validate the network performance, including signalling analysis and troubleshooting.
• Support multi-band and multi-technology trials and deployments and spectrum re-farming for both NSA and SA networks.
• Engage in Open RAN and AI-RAN initiatives, including RIC integration, SON, and automation for zero-touch operations.
• Leverage 3GPP standards and best practices to support scalable and future-ready network architectures.
• Apply cost-optimized strategies to improve CAPEX/OPEX efficiency in network rollouts and enhancements.
• Contribute to enterprise 5G and private network deployments, supporting industry-specific use cases and business demands.
• Collaborate with analytics and strategy teams to explore data monetization opportunities using RAN/Core network insights and digital twin technologies.
Qualifications
• Bachelor’s degree in electrical/Electronic Engineering, Computer Science, or a related field.
• 5+ years of hands-on experience in mobile network design, planning, and optimization.
• Strong understanding of 4G/5G RAN + ORAN technologies, network layers, and deployment workflows.
• Experience with multi-vendor environments and integration of third-party network solutions.
• Proficient in Radio network troubleshooting, parameter tuning, and performance analytics.
• Familiarity with cloud-native architecture, containerization (e.g., Kubernetes), and network slicing is preferred.
• Hands-on experience with scripting or programming (e.g., Python, Java, C#, SQL) for automation and reporting.
• Strong analytical, interpersonal and communication skills to lead cross-functional collaboration and vendor coordination.
• AI certification is an advantage
Skills and Competencies:
• Cellular DAS Design, Deployment, Commissioning & Optimization
▪ RF Lab Architecture & Operations, Shielded Chambers (5G FR1/FR2)
▪ G NR Beamforming, MIMO, CA, EN-DC, DSS
▪ MNO Liaison, Vendor Governance, RFP/BOM
▪ Tools: Atoll, iBwave, Actix, TEMS, Keysight, R&S, Anritsu
▪ RF System Design & Multi-Technology Integration (5G/4G/3G)
▪ Distributed Antenna System (DAS) Engineering (Active/Passive/Hybrid)
▪ In-Building Coverage (IBC) Planning & Venue Modelling
▪ Fiber & RF Distribution Network Architecture (RF/Optical)
▪ Test Methodology Development, Quality Assurance & Compliance
▪ Performance Analysis, KPI Reporting & Optimization
▪ Contractor, Vendor & Supplier Performance Management
▪ Commercial Proposal Preparation, Costing & Technical Documentation