Senior Solution Architect -SORA Project (RS RAN Div)

Job Description:

About Organization

Rakuten Symphony’s Radio Access Network (RAN Division) is revolutionizing wireless connectivity through the development and management of advanced, cloud-native Open RAN solutions. We empower mobile network operators globally by leveraging open interfaces, containerization, and AI-driven analytics. Our mission is to deliver highly scalable, efficient, and reliable 4G/5G infrastructure that pushes the boundaries of network performance.

As a Senior Solution Architect, you will provide technical leadership for our end-to-end RAN architecture. You will bridge the gap between complex business requirements and engineering execution, ensuring our Open RAN products meet the highest standards of performance, security, and scalability. This is a pivotal role for those who thrive in multi-disciplinary environments and are passionate about shaping the future of 5G and beyond.

Job Duties

• Architectural Leadership: Define end-to-end solution architectures and establish engineering best practices. Ensure all designs prioritize scalability, maintainability, and security.

• Technical Governance: Provide architecture governance and technical guidance to engineering teams throughout the development and deployment lifecycle.

• Performance Optimization: Drive network performance improvement through advanced RF tuning, parameter configuration audits, and AI-driven analytics.

• Software Lifecycle Management: Lead release planning, bug tracking, and Root Cause Analysis (RCA). Manage the First Office Application (FOA) process for new software releases across 4G/5G/NTN/IoT products.

• Standardization: Collaborate with stakeholders to standardize "golden parameters" and baseline configurations to ensure consistent network performance.

• Strategic Alignment: Ensure technical solutions are aligned with product goals and business requirements, facilitating seamless integration from the core network to the edge.

Minimum Qualifications

• Experience: 10+ years of professional experience in mobile network engineering.

• Education: Bachelor’s degree in Electrical or Electronics Engineering (or equivalent).

• Technical Expertise:

  • Deep knowledge of 3GPP and O-RAN standards.

  • Expertise in 4G/5G/NTN/IoT technologies.

  • Proficiency in RF optimization, UE/Trace log analysis, and KPI/Counter management.

  • Strong understanding of Cloud-native/Kubernetes terminology.

• Operational Skills: Experience in Software Release Management (JIRA, bug tracking, RCA), asset planning, and cost analysis.

• Language & Soft Skills:

  • Must be a collaborative team player capable of thriving in multi-disciplinary frameworks.

  • Proven ability to take ownership of complex challenges and drive results in fast-paced environments.

  • Strong problem-solving skills with a proactive, "can-do" attitude.

Preferred Qualifications

• Hands-on experience with SON (Self-Organizing Network) parameter tuning for mobility and traffic balancing.

• Experience in SSVT (System Software Validation Testing) and Cluster Optimization.

• Familiarity with mass event handling and advanced traffic balancing strategies.

• Ability to translate complex technical data into actionable architectural decisions.

Languages:

English (Overall - 3 - Advanced)