Backend Engineer

Develop and improve backend features for WealthNavi, an automated asset-management robo-advisor. The role covers backend work from requirements definition and design through implementation, release, operations and post-release improvement. In the in-house environment, the engineer contributes to technology selection and proposes and implements changes that improve the product.

Depending on preference and suitability, the engineer joins one of three teams. The Trading Management Team develops systems for trading, customer balance management, deposits and withdrawals. It maintains an internally developed mission-critical core that supports stable operation 24 hours a day, 365 days a year, and handles portfolio security replacement and securities trading system API version-upgrade projects.

The Financial Systems Development Team adds and improves account-opening functions, develops data integrations and builds internal back-office systems used by operators and customer support. Its work includes personal-information transfers related to My Number and review functions for the digital, paperless NISA application process. The Service Feature Development Team works on backend development for the fully automated asset-management service, post-account-opening features and improvements, mobile-app API integration optimization, and improvements to development workflows and system delivery to improve developer experience.

The stated technology stack includes Java, Kotlin, Spring Boot, AWS, Datadog, MySQL with Aurora, and IntelliJ. Required qualifications are at least five years of Java and Spring Boot development experience and continuous experience from requirements definition through maintenance and operations. Preferred experience includes development and operations using cloud services such as AWS, GCP or Azure; system architecture design; designing and building CI/CD environments; coordinating among multiple stakeholders; and knowledge of financial operations. The posting also seeks someone who can take ownership and drive development.

This is a permanent full-time position in Shinagawa, Tokyo, at Gotanda JP Building 9F. Compensation is an annual salary paid in 12 monthly installments, with a stated range of JPY 6.0–11.5 million per year. Working hours use a flextime system with core hours from 10:00 to 16:00 and a 60-minute break. The work arrangement is hybrid, combining at least three office days per week with working from home, subject to exceptions for some assignments.

The posting lists social insurance, a corporate defined-contribution pension, commuting allowance under company rules for direct employment, a massage room, office convenience and beverage facilities, and influenza vaccination. Development support includes subsidies for books, certifications, external training and seminars, plus internal asset-management study sessions. Other arrangements include weekly company meetings and events, welcome and team lunches, a choice of Mac or Windows subject to assignment exceptions, and office chairs provided at all desks. Weekends and public holidays are generally days off, together with year-end and New Year holidays and other company leave. Paid leave is granted from joining, with 15 days in the second year and 20 days from the third year onward; leave can be taken in one-hour increments.