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Backend Engineer

5.5M JPY - ***M JPY

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Tokyo

Full-time (permanent)

Online Interview: Yes

Remote Work from Overseas: Yes / Remote Work in Japan: No

Top-Selling Points

Rate of Foreigners

Less Than

Frequency of English Usage

Less Than

Related Skills

Development tools

Git

Programming Language

Java Objective-C Shell Script Swift

Operating System

Linux

Server / Middleware

Nginx

Library/Framework

Spring

Language Requirements

Required

Preferred

Job Description

■Department Mission & Overview
The company's online comprehensive payment service is one of the largest payment platforms in Japan, processing over ¥12 trillion annually.
This department handles everything from planning and requirements definition to development and operations in an end-to-end manner. In order to achieve its goal of 25% growth in operating profit, the team is engaged in building new services and improving existing ones.
For services that require a high level of quality, the department maintains a balance between proactive development and robust security, delivering and operating services with a strong sense of speed.

■Job Overview
You will be responsible for the entire phase of system development and operations for the company’s payment service, which is one of the largest payment infrastructures in Japan.

■Responsibilities
The company’s “Comprehensive Payment Service,” as a leading player in the payments industry, serves as a crucial part of social infrastructure, offering financial services that connect businesses and people across a wide range of fields such as e-commerce, finance, and the public sector.
For example, the company independently drives numerous socially impactful projects—such as developing payment systems for online shopping and public utility payments, and creating new smartphone-based payment platforms in collaboration with banks and credit card companies—to make daily life more convenient.
Japan’s payment and financial service infrastructure continues to evolve, providing many opportunities to work with cutting-edge technologies such as AI and fraud detection.
Application engineers play a vital role in supporting the company’s core service infrastructure and are essential contributors to business growth.

～Specifically～
・Planning of feature additions and system analysis/improvement proposals for the company’s in-house payment service
・Enhancement of the in-house payment service (including project management, requirements definition, design and development, testing, release, and operations)
・Planning, proposing, and developing new in-house payment services
*You will be assigned to a department based on your experience and preferences.

■About the Company
This is a publicly listed company on the Tokyo Stock Exchange Prime Market that operates services centered on payments in growing markets such as “cashless,” “FinTech,” and “DX.” It provides a wide range of services—including the comprehensive payment solution "PG Multi-Payment Service"—to over 100,000 e-commerce and online business merchants, achieving one of the largest market shares in the payment industry.
The market in which the company operates continues to grow steadily, driven by the rise of e-commerce and the acceleration of cashless transactions. Business is conducted in a stable environment, and the company continues to generate new value to achieve further growth.

■Four Key Appeals of the Company’s System Engineer Role
・Work at a Growing Company in a Promising Sector
The company is a growth-driven enterprise that continues to expand in the rapidly evolving payment market, achieving increased revenue and profit for 17 consecutive fiscal years since going public, with a target of 25% annual operating profit growth. This dynamic environment fosters continuous opportunities for challenge and innovation.

・Providing One of Japan’s Largest Payment Platforms
The company offers a payment platform that has become essential to daily life, supporting activities such as online shopping and public utility payments. Engineers contribute to the development of a payment platform that handles over ¥13 trillion* in annual transactions, helping to shape the future of digital payments.

・In-House Development of Proprietary Products That Balance Speed and Quality
As engineers at a product-driven company, individuals are granted significant autonomy in development. With a strong emphasis on both speed and quality, they continuously iterate through the PDCA cycle to swiftly deliver robust proprietary products that meet market and customer needs.

・Opportunity to Become a Full-Phase, Full-Stack Engineer
Because the company develops its proprietary products entirely in-house, engineers have access to a wide range of opportunities. There are tasks that allow individuals to leverage their existing skills, as well as opportunities to take on new challenges in unfamiliar areas. This environment empowers engineers to shape diverse career paths through their own initiative.

■Recruitment Background
In order to achieve 25% annual operating profit growth in the rapidly changing cashless market, the company is looking to expand its organization of engineers with the skills and experience to constantly provide new value to the market and customers.

■Career Opportunities and Skills You Can Acquire
・System Development Expertise
You will lead the development of the company’s proprietary payment services. These services utilize a combination of open-source technologies and products such as Java, Spring, Tomcat, and nginx.
As the company emphasizes in-house development, engineers are expected to cultivate not only their technical capabilities but also the ability to effectively coordinate with their teams. Depending on the service, the company employs different development methodologies, including waterfall, agile, and hybrid approaches.

・Fast-Paced Work Environment
In the rapidly evolving payment industry, the company drives decision-making, planning, and implementation with a speed not typically found in large corporations. Engineers are also expected to respond swiftly and proactively—those with a spirit of challenge are especially welcomed.

・Growth as Both an Engineer and an Individual
Building payment services requires a deep understanding of the payment domain. Engineers must stay curious about new technologies and leverage them to enhance service usability. By collaborating with experts from various fields, individuals can improve their knowledge, technical skills, and management capabilities. Furthermore, in order to continue expanding market share, high standards are demanded in all areas—speed, quality, security, and performance—creating an environment where one can grow both professionally and personally.

・Project Management Skills for Building In-House Services
With growing societal interest in FinTech and the advancement of financial services, the company is planning numerous projects in collaboration with major banks, regional banks, and public-sector clients to develop new payment services. These projects typically span six months to a year and involve managing efforts equivalent to several dozen to hundreds of person-months. By working closely with clients and vendors, employees gain valuable experience collaborating with a wide range of stakeholders, including credit card companies and banks.

Required Skills and Experiences

【MUST】 Development experience with web application systems using open languages such as Java [Particularly] Development skills in: - Java, Spring, Shell Script, Linux Application development skills using RDBMS 【WANT】 *Meet any of the following Experience in developing EC web applications (preferably with payment-related projects) Background in major EC (mall) operators or their system development companies Experience with systems for financial institutions/credit card companies (front-end or back-end) Practical experience in upstream processes (requirements definition, basic design) Experience managing external partner company members (SIer experience preferred) Experience building web applications using Java / Spring Framework / Spring Boot / nginx Experience using version control systems such as SVN or Git Experience developing smartphone applications using Java / Swift / Objective-C *For whom: Enthusiastic about Generative AI and the latest IT technologies/tools, contributing to the company’s initiative to become the No.1 AI-driven enterprise group === ■Organization & Work Environment The System Division is structured into five departments, each responsible for supporting the company’s "Comprehensive Payment Service." Each department oversees the development and operation of specific services such as e-commerce and DX support, services for financial institutions, public sector services, post-payment/remittance/digital salary services, and more. ■Technology used *Combination of any of the following ◇Language: Java/PHP/Perl/Vue.js/Swift ◇Framework: Spring Boot ◇Server: Linux/Windows/vmware/Fargate(ECS)/EC2/Lambda ◇DB: Oracle/ MySQL/PostgreSQL/Aurora(MySQL,PostgreSQL)/ElastiCache(Redis,Memcached)/DynamoDB/DocumentDB ◇Others: Atlassian Confluence/Atlassian Jira/ Microsoft Teams

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Working Condition

【Holidays & Leave】
Full two-day weekends (Saturdays & Sundays) and public holidays
Annual paid leave: 10–20 days (minimum granted after six months of employment)
Total annual holidays: 120 days

Summer vacation (5 days) / Year-end and New Year holidays (December 29 – January 3) / Annual paid leave / Special leave for bereavement and celebrations / Parental leave / Childcare leave / Caregiver leave / Maternity support leave / Spousal childbirth leave / Long-service special leave

【Welfare】
Transportation allowance / Family allowance (Spouse: ¥20,000 / Dependents: ¥5,000 per person) / Social insurance coverage (health insurance, pension, employment insurance, workers' compensation insurance)

Retirement age: 60
*Reemployment system available

Training & Education Support
・New employee training
・Basic business skills training
・External seminars
・Management training
・Level-specific training
・Security training
・Compliance training

Additional Benefits
・Childbirth & childcare support (Family support programs, shortened work hours)
・Employee recognition programs (President's Award, Division Head Award, Rookie of the Year, Long-service Awards)
・Childbirth congratulatory bonuses:
　- First child: ¥100,000
　- Second child: ¥300,000
　- Third and subsequent children: ¥500,000
・Health checkups (including full medical examinations)
・Employee stock ownership plan
・Condolence and congratulatory payments
・In-house café (offers drinks, breakfast, and lunch; "Bar Time" every Friday night and various events)
・On-site childcare facility
・In-house massage room
・Nap space for employees

RECRUITMENT PROCESS

Document screening → Interview (multiple times), aptitude test → Offer

*There is a flow to confirm interest in and utilization of AI (the latest IT technologies and tools).
*Reference check/background check may be conducted for some applicable candidates.

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