Software Engineer, Backend – Payment Core

Mercari, Inc.

Software Engineer designing and operating the payment core infrastructure supporting all payments for the Mercari Group. Collaborating with multilingual teams and ensuring high reliability of payment systems.

Posted 7/13/2026full-timeMinato City • 🇯🇵 JapanMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in Web Application Development, Database Schema Design, and Software Architecture, with a strong focus on reliability and performance in high-traffic environments. Capable of leveraging Generative AI to enhance development workflows and team productivity.

Highest-signal resume keywords

Web Application DevelopmentDatabase Schema DesignSoftware Architecture DesignOperational TuningGenerative AI Implementation

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Web Application DevelopmentDatabase Schema DesignEfficient Query CreationOperational TuningSecurity Knowledge

Soft Skills

OwnershipProblem Definition

Tools & Technologies

SpannerRDBNoSQL

Industry Keywords

Distributed TransactionsHigh AvailabilityLatency Trade-offsExternal Payment Provider IntegrationHigh Traffic Stability

Tech Stack

Tools & technologies

NoSQL

About the role

Key responsibilities & impact

メルカリグループのあらゆる決済を支える汎用基盤の設計から運用まで担う
分散トランザクションの整合性・可用性・レイテンシのトレードオフを設計する
金融水準の信頼性を満たす設計が求められる
汎用基盤としての設計を行う
外部決済プロバイダとの接続を設計する
大規模トラフィックの安定処理を維持する

Requirements

What you’ll need

5年以上の Web アプリケーション開発の経験
DB (Spanner, RDB, NoSQL, etc.) におけるスキーマ設計と効率的なクエリ作成のスキル
Web アプリケーションの運用・チューニング経験、およびセキュリティの知識
ソフトウェアアーキテクチャの設計とミドルウェア選定の経験
曖昧な問題を自ら定義し、オーナーシップを持って開発を推進する力
生成 AI を活用した開発フローの効率化を自ら実践し、チームの生産性向上に寄与できる能力

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 – Payment Core 🔥 1 hour ago 🏢🏡 Minato City – Hybrid ⏰ Full Time 🟡 Mid-level 🟠 Senior 🔙 Backend Engineer 🗣️🇯🇵 Japanese Required NoSQL Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
メルカリグループのあらゆる決済を支える汎用基盤の設計から運用まで担う
分散トランザクションの整合性・可用性・レイテンシのトレードオフを設計する
金融水準の信頼性を満たす設計が求められる
汎用基盤としての設計を行う
外部決済プロバイダとの接続を設計する
大規模トラフィックの安定処理を維持する 🎯 Requirements
5年以上の Web アプリケーション開発の経験
DB (Spanner, RDB, NoSQL, etc.) におけるスキーマ設計と効率的なクエリ作成のスキル
Web アプリケーションの運用・チューニング経験、およびセキュリティの知識
ソフトウェアアーキテクチャの設計とミドルウェア選定の経験
曖昧な問題を自ら定義し、オーナーシップを持って開発を推進する力
生成 AI を活用した開発フローの効率化を自ら実践し、チームの生産性向上に寄与できる能力 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 Find jobs using your resume 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