LINE Executive and Leadership Team

September, 2026

Leadership Overview

LINE has 8 executives leading key functions including strategy, corporate governance, operational management, technology infrastructure, information systems, financial oversight, and technical support.

Focused on connecting users through seamless communication, LINE delivers innovative social networking services while maintaining a robust digital ecosystem across global markets.

Leadership Roles at LINE

  • Chief Executive Officer - Jun Masuda
  • Chief Executive Officer & Representative & Director - Soyeon Song
  • Director, Chief Executive Officer Office - Leah Oh
  • Chief Financial Officer & Executive Director - Hwang In-Joon
  • Chief Technology Officer - Leo Weng
  • Chief Information Officer & Portfolio Manager - HyoungJoo Lee
  • Senior Vice President, Chief Technology Officer - Euivin Park
  • Chief Technology Officer, Office Staff - Ryan Seung
  • Jun Masuda - Chief Executive Officer

    Jun Masuda, the Chief Executive Officer at LINE, directs the overarching strategic vision for the instant messaging platform. Masuda architects long-term growth initiatives while overseeing the expansion of social networking services across the Asian market. By aligning product development with user engagement metrics, the Chief Executive Officer ensures the platform remains competitive against global messaging rivals. Jun Masuda maintains constant communication with the Board to refine corporate objectives and drive sustainable revenue streams. This leadership role involves managing complex stakeholder relationships and fostering a culture of rapid innovation within the engineering teams. Through the optimization of freeware service models, Masuda secures the company's position as a leader in digital connectivity. The Chief Executive Officer prioritizes user privacy and data security as core pillars of the corporate mission, ensuring that every strategic decision enhances the overall value proposition for millions of daily active users.
    Jun Masuda

    Soyeon Song - Chief Executive Officer & Representative & Director

    Soyeon Song, the Chief Executive Officer & Representative & Director at LINE, manages corporate governance and legal compliance across all international operations. Song executes high-level administrative policies while representing the company in critical negotiations with external partners and regulatory bodies. As the Chief Executive Officer & Representative & Director, Song ensures that internal processes align with the broader objectives set by the SoftBank Group and LY Corporation. This role involves supervising the board of directors to maintain transparency and operational integrity. Soyeon Song drives the implementation of corporate standards that govern the freeware app ecosystem, ensuring consistent service delivery across diverse geographic regions. By balancing fiscal responsibility with aggressive market expansion, Song strengthens the company's foundation. The Chief Executive Officer & Representative & Director oversees the integration of new business units, facilitating seamless collaboration between departments to support the company's mission of providing reliable, high-speed communication tools to a global user base.

    Leah Oh - Director, Chief Executive Officer Office

    Leah Oh, the Director, Chief Executive Officer Office at LINE, coordinates executive workflows and streamlines communication between the C-suite and departmental leads. Oh manages the daily operations of the executive office, ensuring that strategic priorities receive immediate attention from the leadership team. As the Director, Chief Executive Officer Office, Oh facilitates cross-functional projects that bridge the gap between social networking product teams and corporate strategy. This role involves analyzing operational efficiency to identify bottlenecks in the service delivery pipeline. Leah Oh drives the execution of internal initiatives that support the company's mission of fostering digital connectivity. By managing the flow of information to the Chief Executive Officer, Oh enables data-driven decision-making across the organization. The Director, Chief Executive Officer Office monitors project timelines and resource allocation, ensuring that all business units remain focused on achieving quarterly growth targets while maintaining the high standards expected of a premier messaging service provider.

    Hwang In-Joon - Chief Financial Officer & Executive Director

    Hwang In-Joon, the Chief Financial Officer & Executive Director at LINE, manages the company's fiscal health and long-term financial planning. Hwang directs the budgeting, accounting, and financial reporting processes that support the company's operations. As the Chief Financial Officer & Executive Director, Hwang oversees capital allocation and investment strategies to drive sustainable growth. This role involves working closely with the Board to ensure financial transparency and regulatory compliance. Hwang In-Joon drives the development of revenue models that leverage the platform's massive user base, including advertising and premium service offerings. By monitoring market performance and economic indicators, Hwang ensures that the company maintains a strong competitive position. The Chief Financial Officer & Executive Director coordinates with other executives to align financial resources with the company's mission of providing innovative social networking services. Hwang manages the financial risks associated with global expansion, ensuring that the company remains profitable while continuing to invest in technological advancements.

    Leo Weng - Chief Technology Officer

    Leo Weng, the Chief Technology Officer at LINE, architects the core messaging infrastructure and scalable cloud systems that power the platform. Weng directs the engineering teams responsible for maintaining high availability and low latency for millions of concurrent users. As the Chief Technology Officer, Weng oversees the development of new features that enhance the social networking experience, including real-time communication tools and multimedia sharing capabilities. This role involves collaborating with security experts to protect user data against emerging cyber threats. Leo Weng drives the adoption of cutting-edge technologies to improve the efficiency of the freeware app. By managing the technical roadmap, Weng ensures that the platform remains at the forefront of digital innovation. The Chief Technology Officer monitors system performance across global data centers, implementing upgrades that support the company's mission of providing a seamless, reliable, and secure communication environment for users worldwide.

    HyoungJoo Lee - Chief Information Officer & Portfolio Manager

    HyoungJoo Lee, the Chief Information Officer & Portfolio Manager at LINE, manages the company's internal data architecture and digital asset portfolio. Lee directs the implementation of information systems that support business intelligence and operational analytics. As the Chief Information Officer & Portfolio Manager, Lee oversees the strategic investment in software tools that optimize internal workflows and data management. This role involves analyzing market trends to guide the development of new service offerings within the social networking ecosystem. HyoungJoo Lee drives the integration of advanced analytics to improve user retention and platform engagement. By managing the portfolio of digital services, Lee ensures that the company's technological investments yield maximum returns. The Chief Information Officer & Portfolio Manager coordinates with other C-suite leaders to align information technology with the company's broader mission of delivering high-quality communication services. Lee maintains a focus on scalability, ensuring that the infrastructure supports rapid growth across diverse international markets.

    Euivin Park - Senior Vice President, Chief Technology Officer

    Euivin Park, the Senior Vice President, Chief Technology Officer at LINE, leads the research and development initiatives focused on next-generation messaging protocols. Park directs the engineering teams in exploring artificial intelligence and machine learning applications to enhance user interaction. As the Senior Vice President, Chief Technology Officer, Park oversees the technical strategy for mobile application development, ensuring compatibility across various operating systems and devices. This role involves mentoring senior engineers and fostering a culture of technical excellence. Euivin Park drives the implementation of robust backend systems that support the company's mission of providing a reliable social networking experience. By managing the technical roadmap for future product releases, Park ensures that the platform evolves to meet changing user demands. The Senior Vice President, Chief Technology Officer collaborates with the broader technology leadership to maintain system stability and security, ensuring that the company remains a dominant force in the global digital communication landscape.

    Ryan Seung - Chief Technology Officer, Office Staff

    Ryan Seung, the Chief Technology Officer, Office Staff at LINE, supports the technical leadership team by managing specialized projects related to network optimization and system reliability. Seung directs the implementation of technical protocols that improve the speed and quality of instant messaging services. As the Chief Technology Officer, Office Staff, Seung oversees the maintenance of critical server infrastructure and ensures that the platform remains resilient during peak usage periods. This role involves analyzing system logs to identify and resolve performance issues before they impact the user experience. Ryan Seung drives the adoption of efficient coding practices across the development teams to reduce technical debt. By managing the technical support operations, Seung ensures that the company's mission of providing seamless communication is upheld. The Chief Technology Officer, Office Staff collaborates with other technical leads to integrate new features into the existing architecture, ensuring that the platform remains stable and scalable for a growing global user base.

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    Frequently Asked Questions Regarding LINE Top Executives and Leadership Team

    Who leads LINE?
    LINE is led by Jun Masuda (Chief Executive Officer), along with executives such as Soyeon Song (Chief Executive Officer & Representative & Director) and Leah Oh (Director, Chief Executive Officer Office).
    Who is part of LINE’s executive team?
    The executive team of LINE includes leaders such as Jun Masuda (Chief Executive Officer), Soyeon Song (Chief Executive Officer & Representative & Director), Leah Oh (Director, Chief Executive Officer Office) and other senior executives.
    How many executives does LINE have?
    LINE has 8 executives leading key business areas.
    What roles are included in LINE’s leadership team?
    The leadership team of LINE includes roles such as Chief Executive Officer, Chief Executive Officer & Representative & Director, Director, Chief Executive Officer Office, Chief Financial Officer & Executive Director, Chief Technology Officer.