Backend Engineer (Common Software)

This backend engineering role belongs to the SWE team, which develops shared foundations used across development teams, improves system performance, and addresses technical debt. The team supports long-term, healthy operation of internally developed customer-facing applications, trading systems, and administrative operations systems.

Responsibilities include designing, developing, maintaining, and improving shared platforms used by the development organization. The role also helps standardize development procedures between teams, including coding conventions and Git operating rules. It identifies issues in system structures and technology choices such as frameworks from a sustainability perspective, develops solutions, and supports their introduction. The position also involves leading technical-debt reduction, proposing improvements, and supporting engineers in broadening their understanding of development work.

Example projects include improving the generation speed of portfolio valuations, history graphs, and security-level portfolio views shown in the application home screen and service site. Another project is the shared WealthNavi ID platform, built with Auth0 to manage integrated user IDs across products as the business expands to multiple products.

Required qualifications are at least three years of development experience with Java and Spring Boot, at least five years of total development experience, experience developing and operating BtoC applications in cloud environments, and experience defining requirements and carrying out basic and detailed architecture design for medium-to-large-scale systems or new products. Experience establishing development standards, working on mission-critical systems, coordinating multiple stakeholders, and knowledge of financial operations are welcomed.

The stated development environment includes Java and Kotlin; Spring Boot and Quarkus for backend development; Vue and React for frontend development; Aurora MySQL and BigQuery; AWS, GCP, Datadog, and JP1; and Slack, JIRA, Bitbucket, GitHub, and IntelliJ. The business develops the WealthNavi automated asset-management robo-advisor and other financial services.

The position is a full-time permanent role in Shinagawa, Tokyo, with annual compensation of JPY 6,000,000 to JPY 11,500,000, paid in twelve monthly installments under an annual salary system. Working hours use a flextime system with core hours from 10:00 to 16:00 and a 60-minute break. The holiday schedule includes Saturdays, Sundays, public holidays, year-end and New Year holidays, and other company-designated leave. Annual paid leave is provided from the date of joining, with 15 days in the second year and 20 days from the third year; leave may be taken in one-hour increments.

The workplace uses hybrid working, combining at least three office days per week with working from home, subject to some assignment-specific exceptions. Benefits include social insurance, a defined-contribution pension plan, commuting allowances under company rules for direct employees, a massage room, office refreshments, influenza vaccinations, support for books, certifications, external training, and seminars, as well as internal asset-management study sessions. Employees may choose a Mac or Windows computer, subject to some assignment exceptions. Selection consists of document screening, approximately two to three interviews with employees and executives, and an offer, although the process may change.