Software Engineer, Backend – Ops Foundation

Mercari, Inc.

Software Engineer developing AI knowledge platforms at Mercari. Collaborating to automate customer service operations and enhance user experience through technology.

Posted 5/26/2026full-timeMinato City • 🇯🇵 JapanMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSCloudGoReactTypeScript

About the role

Key responsibilities & impact

Development of an AI knowledge platform: We will organize and structure the vast amount of CS knowledge required to solve customers’ issues, and build a foundational system that centrally manages it in a form that AI can utilize at an advanced level.
Automation and optimization of inquiry response processes: We will understand existing CS workflows, untangle on-the-ground challenges, and build a system that enables AI agents to autonomously resolve inquiries with high reliability.
Collaboration with stakeholders: We will work closely with non-technical departments responsible for handling customer inquiries, translate business requirements into technical specifications, and develop and operate systems, while also taking responsibility for formulating and driving medium- to long-term technology strategies.

Requirements

What you’ll need

Empathy with the mission and values of Mercari Group and its affiliates.
5+ years of experience developing large-scale web applications. Experience designing, developing, and operating systems with scalability and maintainability in mind.
Experience designing and developing scalable APIs using modern languages such as Go.
Experience developing SPAs with complex state management using React, TypeScript, etc.
Excellent communication skills, with the ability to provide clear and persuasive explanations to both technical and non-technical audiences.
Experience developing and operating systems using public clouds such as Google Cloud and AWS.
Preferred Experience/Skills
Experience in system development using LLMs through to production deployment.
Understanding of CS operations, with knowledge of customer support workflows (receiving calls, ticket creation, escalation, etc.) and KPIs (response rate, resolution rate, etc.).
Experience in developing or operating and maintaining CS/call center-related products (CRM, FAQ systems, chatbots, etc.).
Language
Japanese: Independent (CEFR - B2)
English: Independent (CEFR - B2) Preferred

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account Mercari, Inc. Website LinkedIn All Job Openings 1001 - 5000 employees Founded 2013 🛍️ eCommerce 🏪 Marketplace 🌍 Social Impact eCommerce
Marketplace
Social Impact Mercari, Inc. is a marketplace platform that allows users to buy and sell various items, offering a convenient and efficient way for individuals to engage in commerce. The company emphasizes innovation, diversity, and inclusion in its work culture while striving to unleash the potential of its employees. With a commitment to sustainable practices, Mercari aims to create a positive impact within the communities it serves and beyond. Software Engineer, Backend – Ops Foundation 🔥 50 minutes ago 🏢🏡 Minato City – Hybrid ⏰ Full Time 🟡 Mid-level 🟠 Senior 🔙 Backend Engineer 🗣️🇯🇵 Japanese Required AWS Cloud React TypeScript Go Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
Development of an AI knowledge platform: We will organize and structure the vast amount of CS knowledge required to solve customers’ issues, and build a foundational system that centrally manages it in a form that AI can utilize at an advanced level.
Automation and optimization of inquiry response processes: We will understand existing CS workflows, untangle on-the-ground challenges, and build a system that enables AI agents to autonomously resolve inquiries with high reliability.
Collaboration with stakeholders: We will work closely with non-technical departments responsible for handling customer inquiries, translate business requirements into technical specifications, and develop and operate systems, while also taking responsibility for formulating and driving medium- to long-term technology strategies. 🎯 Requirements
Empathy with the mission and values of Mercari Group and its affiliates.
5+ years of experience developing large-scale web applications. Experience designing, developing, and operating systems with scalability and maintainability in mind.
Experience designing and developing scalable APIs using modern languages such as Go.
Experience developing SPAs with complex state management using React, TypeScript, etc.
Excellent communication skills, with the ability to provide clear and persuasive explanations to both technical and non-technical audiences.
Experience developing and operating systems using public clouds such as Google Cloud and AWS.
Preferred Experience/Skills
Experience in system development using LLMs through to production deployment.
Understanding of CS operations, with knowledge of customer support workflows (receiving calls, ticket creation, escalation, etc.) and KPIs (response rate, resolution rate, etc.).
Experience in developing or operating and maintaining CS/call center-related products (CRM, FAQ systems, chatbots, etc.).
Language
Japanese: Independent (CEFR - B2)
English: Independent (CEFR - B2) Preferred Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

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Hard Skills & Tools

large-scale web applicationsscalable APIsGoReactTypeScriptpublic cloudsGoogle CloudAWSLLMsCS/call center-related products

Soft Skills

empathyexcellent communication skillscollaborationpersuasive explanations