Technical Project Manager, Portfolio Management Section (RMI Portfolio & Strategy Office)

Job Description:

About Organization

● Rakuten Mobile's Portfolio Management Section is responsible for portfolio prioritization and to drive strategic initiatives with cross-platform activities by leading the centralized team of project/ program managers.
● Drives and manages the cross domain BU governance and communication

Job Duties

We are seeking an experienced and highly motivated Technical Project Manager to lead complex projects within our Non-Terrestrial Network (NTN) initiatives. The ideal candidate will possess a strong blend of technical expertise in satellite communications, related NTN fields, coupled with a proven track record of successfully delivering large-scale projects from conception to completion. This role requires a strategic thinker who can navigate technical challenges, manage diverse stakeholders, and drive project success in a fast-paced, evolving industry.

Minimum Qualification

• • Bachelor's degree in Engineering, Computer Science, Telecommunications, or a related technical field. Master's degree preferred.
• • Minimum of 10 years of progressive experience in project management, with a proven track record of successfully delivering complex technical projects.
• • At least 3 years of direct project management experience specifically within Non-Terrestrial Networks (NTN), satellite communications, aerospace, or related space-based communication systems.
• • In-depth knowledge of NTN architectures and how they extend terrestrial networks.
• • Focus on designing, analyzing, and optimizing call flow and network signaling within integrated satellite and terrestrial networks.
• • Key responsibilities include ensuring interoperability, managing mobility across diverse networks (e.g., LEO/MEO/GEO, terrestrial)
• • Oversee Designs, implements, and maintains integrated satellite and terrestrial communication systems that provide global connectivity for 5G, IoT, and other applications in remote areas.
• • Understanding NTN architecture, analyzing 3GPP standards, developing solutions for power-constrained satellite components, testing RF and modulation characteristics,
• • Understand and apply 3GPP NTN standards  to enable seamless hybrid cellular and satellite connectivity.
• • Expertise in 5G, 6G, and terrestrial network integration, including concepts like gNB functions hosted in satellites.
• • Work with telco operators, satellite providers, and regulatory bodies to foster innovation and ensure sustainable NTN development.
• • Demonstrated expertise in project management methodologies (e.g., Agile, Scrum, Waterfall, Hybrid) and tools (e.g., Jira, Confluence, Knowledge Hub).
• • Strong understanding of NTN ecosystems, including satellite constellations (LEO, MEO, GEO), ground segment infrastructure, user terminals, network protocols (e.g., 5G NTN, IP), and RF principles.
• • Excellent leadership, communication (written and verbal), interpersonal, and presentation skills.
• • Ability to manage multiple projects concurrently in a fast-paced, dynamic environment.

Preferred Qualification

• • Experience with regulatory compliance in the space or telecom sector.
• • Familiarity with cybersecurity considerations in NTN.
• • Experience managing projects with international components or global teams.
• • Knowledge of specific NTN applications (e.g., IoT, backhaul, direct-to-device)
• • Proficiency in Japanese (verbal and written) is highly preferred.

Languages:

English (Overall - 4 - Fluent), Japanese (Overall - 3 - Advanced)