Global Full-Stack Engineer

You will work hands-on across the backend and frontend, helping build the core platform for collecting and analyzing GenAI usage logs, security detection, and data visualization. You will also collaborate with global customers and team members in English.

Responsibilities

• Design and develop backend/frontend features using Go, Python, and TypeScript
• Build log collection, analytics, and visualization platforms
• Develop security features such as prompt and anomaly detection
• Integrate with GenAI services including ChatGPT, Microsoft Copilot, and Gemini
• Design APIs, databases, and system architecture
• Design, operate, and improve AWS cloud infrastructure
• Conduct code reviews and improve engineering quality and processes
• Collaborate with PMs, designers, and security specialists

Tech Stack

Go, TypeScript, Next.js, React, PostgreSQL, Redis, AWS (ECS/Fargate, RDS, S3, Cognito, CloudWatch), Docker, Terraform, GitHub Actions

Location: Sapporo, Sendai, or Fukuoka, Japan

Requirements

Must Have

• 3+ years of web application development experience using Go, Python, or TypeScript
• Experience with Git/GitHub in a team development environment
• Experience developing, deploying, and operating applications in cloud environments such as AWS
• Business-level English for communication with global customers and teams

Nice to Have

• Experience developing or operating GenAI/LLM applications
• Experience with data platforms, log analytics, or visualization products
• Knowledge of cybersecurity, threat detection, vulnerabilities, or attack techniques
• Experience with GraphQL, gRPC, JSON-RPC, or database design
• AWS architecture/operations experience
• Experience developing products in small teams or startup/early-stage environments