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Senior Software Engineer, Advertisement Optimization Group - Merchandising and Advertisement Department (MAD)

Tokyo, Japan💼 Full-time🗓 2026-03-24 → 2026-07-31

Core

Design, develop, and optimize complex data processing pipelines and high-throughput APIs for AI-driven advertisement optimization systems.

Role type

Senior Software Engineer (Infrastructure & Platform)

Builds

Ad optimization logic, bidding/budget allocation platforms, and performance measurement systems for publishers and advertisers.

Domain

E-commerce, Ad-tech, AI-driven optimization

Deliverable

production ML models | infrastructure

Required skills

Distributed systems design, high-throughput API development, system architecture, data structures and algorithms, CI/CD pipelines, GCP deployment, asynchronous processing, REST APIs, event-driven systems, code review leadership, technical strategy planning.

Preferred skills

Container orchestration (Docker, Kubernetes), high-availability system design, SQL/NoSQL databases, caching strategies, observability tools (Prometheus, Grafana, ELK, OpenTelemetry), security best practices.

Technologies

Python, Java, Go, GCP, Docker, Kubernetes, Prometheus, Grafana, ELK, OpenTelemetry

Responsibilities

Lead design and architecture of large-scale distributed software systems; Develop high-quality, maintainable code across the full SDLC; Mentor and support junior/mid-level engineers; Identify and resolve complex issues related to performance, scalability, and system reliability; Contribute to long-term technical strategy and platform modernization; Evaluate and integrate new tools and frameworks.

Seniority

Senior, hands-on IC with mentorship responsibilities

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