PayPay Card Corporation is hiring an AI Platform Engineer

PayPay Card is looking for an AI Platform Engineer focused on cloud-native GenAI infrastructure and enablement. This role will build and operate the foundation that enables internal teams to deliver and operate GenAI applications, agents, RAG systems, and related AI workloads reliably, safely, and cost-effectively Responsibilities - Architect and build AI platform capabilities for applications, agents, RAG systems and related AI workloads - Architect and build infrastructure that is easy to maintain, update and improve - Architect and build infrastructure with appropriate reliability and recovery capabilities for internal AI platform services - Work together with our Security Engineers to provision secure and governed AI platform infrastructure - Build and maintain deployment automation to ensure fast delivery of AI platform services to our developers - Provide self-service capabilities and standard deployment patterns for developers to easily deploy and operate AI-powered application infrastructure - Build and maintain reusable platform templates, deployment patterns and integrations for GenAI applications, agents, RAG systems, MCP-based integrations and agent-to-agent workflows - Build and support monitoring and evaluation capabilities for GenAI systems, including usage, cost, reliability, agent execution and adoption metrics - Continuously research, evaluate, and prototype emerging AI trends, frameworks, and open-source tools to ensure the platform remains cutting-edge. - Drive R&D initiatives for new AI platform capabilities, keeping pace with the rapid evolution of agentic workflows and LLM infrastructure. Tech Stack - AWS: Bedrock, Bedrock Knowledge Bases, OpenSearch, Neptune, S3, ECS, EKS, Lambda, CloudWatch, Cognito, SQS, KMS, Secrets Manager, MSK, CodeCommit, CodeBuild, CodeDeploy, CodePipeline, CloudFormation and other services - AI platform / GenAI capabilities: RAG, vector stores, graph databases, model access patterns, MCP-based integrations, agent orchestration, agent-to-agent workflows, evaluation and observability tooling - Terraform, GitHub Actions, Prometheus, Grafana, Dynatrace, Atlantis, ArgoCD, OpenTelemetry