M
3-8-5 Tatsumi, Koto-Ku, Tokyo 135-0053, Japan
Full-time
Based on experience and skills
at LY Corporation • Tokyo, Japan
We are looking for an experienced Backend Software Engineer to join the team behind LINE's Messaging Platform. This role involves designing, implementing, and evolving critical backend systems that enable global real-time communication at scale. You will play a technical leading role in ensuring high reliability, performance, and security, while contributing to system architecture and engineering excellence across teams to ensure seamless communication for hundreds of millions globally. As a senior contributor to the Messaging Platform team, you will be responsible for designing, delivering, and operating highly scalable and reliable backend services that handle tens of billions of messages per day across the LINE ecosystem. Your work will include long-term architectural initiatives, cross-functional collaboration, and continuous improvement of our services' scalability and maintainability. You'll provide technical leadership in developing new features and improving existing systems, with a strong emphasis on system optimization, fault tolerance, observability, and CI/CD automation. You will also mentor other engineers, shape team standards, and help define platform strategy that anticipates future business needs. Our team is composed of talented engineers from diverse countries and backgrounds. We foster a culture of curiosity, learning, innovation, mutual trust and proactivity that empowers us to deliver at scale and adapt quickly to change. Responsibilities include leading the design and implementation of scalable backend features and APIs, architecting distributed systems, driving collaboration across organizational boundaries, and shaping the long-term technical vision. Mentoring engineers and establishing engineering best practices are also key aspects of this role. Depending on the team and specific components, this role may include on-call responsibilities.
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