English summary for screening — check the original posting before applying.
Mercari is seeking Backend Product Engineers to innovate in the AI x CS domain. You will build a foundational system for managing vast amounts of customer service knowledge for AI utilization and optimize customer inquiry response processes through automation. This role involves close collaboration with non-technical departments to translate business needs into technical specifications and contribute to long-term technology strategy.
Must-haves
- Empathy for Mercari Group's mission and values.
- 5+ years of experience developing large-scale web applications, with experience in designing, developing, and operating systems considering scalability and maintainability.
- Experience designing and developing scalable APIs using modern languages like Go.
- Experience developing SPAs with complex state management using React and TypeScript.
- Excellent communication skills, able to explain clearly and persuasively to both technical and non-technical stakeholders.
- Experience developing and operating systems using public clouds like Google Cloud or AWS.
Nice-to-haves
- Experience developing and deploying systems utilizing LLMs.
- Understanding of customer service operations and knowledge of CS workflows (e.g., call handling, ticket creation, escalation) and KPIs (e.g., response rate, resolution rate).
- Experience developing or operating/maintaining CS/call center related products (e.g., CRM, FAQ systems, chatbots).
Tech stack
GoPythonGoogle Cloud PlatformAmazon Web ServicesKubernetesGoogle Cloud SpannerCloud SQLAlloyDBgRPCGraphQLTerraformBigQueryLookerdbtDatadogGCP Cloud MonitoringPagerDutyGitHub ActionsArgo WorkflowsGitHubClaude CodeGitHub CopilotCursorGeminiReactTypeScript
Work style
Hybrid, Tokyo, Japan (Roppongi). Flexible working hours with no core time.
Other notes
Annual salary range: 9,200,000 JPY - 14,000,000 JPY. Bonus twice a year.