「JAPAN AI SPEECH」の音声処理基盤について、技術戦略とアーキテクチャ設計を担い、技術選定や精度・レイテンシ・推論コストの判断を行います。会議横断分析やLLMを用いた要約などの機能開発を、PdMと連携しながら設計・実装までリードします。設計レビュー、メンタリング、開発プロセス整備を通じてSpeechチームを技術的に牽引するポジションです。
You will design, implement, and operate security controls for the Software Development Lifecycle, collaborating with software engineers and SREs on code security reviews and automated security checks. The role also evaluates and operates AI development support tools and contributes to incident response, vulnerability management, and security process improvements.
As the primary SRE/infrastructure owner for the Digital Bank and fintech domain, this role builds and operates infrastructure for serving interfaces, data pipelines, and the ML development platform. It focuses on financial-grade network security, monitoring, observability, operations, and the data platform/MLOps interface. The role supports the FY2027 Digital Bank launch and collaborates with SRE, data platform, and product platform teams across the group.
This is a backend engineering role owning the application layer of a private REST API credit microservice used across Digital Bank and group-company fintech products. The role is responsible for designing, implementing, and assuring the quality of the microservice for the FY2027 Digital Bank launch, including machine-learning model integration, credit logic, API contracts, testing, and technical standards.
AIエージェント特有のセキュリティとガバナンスを管理し、信頼性(トラスト)を高める「Trusted AI Agent Platform」の企画・開発を担当します。サービス構想や要件整理、設計、プロトタイプ開発、実証、商用化から将来的な運用・機能拡張までを担います。NTTグループや国内外のパートナーベンダと連携し、AIエージェントを安全に利用するための統合的なプラットフォームサービスを創出します。
The Senior Cyber Threat Hunter will proactively identify and mitigate advanced threats to strengthen Rakuten Mobile's cyber defense posture. The role develops and executes hypothesis-driven hunts, analyzes security data, and translates findings into actionable detection improvements while supporting incident investigation and containment.
Provide L2/L3 troubleshooting support for 5GC E2E operations and resolve technical issues across Core & Cloud. The role includes operational analysis, audits, change implementation, incident support, and collaboration with internal teams, partners, and vendors. The position is based in the Tokyo office.
Design and develop container-based virtualization infrastructure for mobile communication systems. The role integrates hardware, operating systems, virtualization infrastructure software, and third-party components, and includes infrastructure automation, performance tuning, and implementing functionality to support stable and efficient service delivery.
Conduct manual and automated penetration testing across web and mobile applications, APIs, cloud platforms, and network infrastructure. The role also covers AI/ML and telecom security assessments, red team exercises, code and design reviews, reporting, remediation validation, and security research.
Develop and optimize backend microservices and APIs supporting global, multi-channel CPaaS communication services. The role covers distributed systems, databases, Kubernetes operations, CI/CD, observability, and collaboration with product and engineering teams.
This DevOps Engineer role supports the Conversational Experiences Department’s AI-powered products and services by building and operating reliable, scalable, and secure infrastructure. Its core focus is Kubernetes-based infrastructure and cloud-native services, including deployment automation, cloud operations, observability, and platform reliability. The role includes a 24/7 on-call rotation and collaboration with software development teams and cross-functional/international stakeholders.
As a hands-on backend developer, you will build applications and develop software solutions, responding to requests for coding, testing, and maintenance of software programs and systems. The role focuses on cloud management solutions for authorization services, tenant management, and fine-grained access control.
The Security Detection & Automation Engineer develops automated detection logic, security-as-code solutions, and response playbooks to protect Rakuten's private cloud environment. The role builds high-fidelity detection, automated response, and scalable security engineering capabilities to help protect products and production systems and reduce time-to-detect and time-to-remediate.
生成AIプロダクトを支えるインフラエンジニアとして、エンタープライズ企業向けAI導入プロジェクトのインフラ設計・構築や、自社AIプロダクトのインフラ改善・運用を担当します。AWSを中心としたクラウド環境の設計・運用、Infrastructure as Codeの推進、可用性・性能・セキュリティ向上などに取り組みます。