Senior Software Engineer (Go), API Platform Department, PPD, Kyoto

[UI Turn Support Campaign Ongoing]

For residents of Japan — Money Forward is currently running a campaign to support relocation to our Kyoto development base! We are offering 500,000 yen to assist with relocation expenses to engineers who join us mid-career and are currently living in Japan (conditions apply).

Note for Overseas Applicants: If you are applying from overseas, relocation support is available.

Overview

At Money Forward, we are dedicated to transforming financial services using advanced technology. With over 50 services for individuals and businesses, including popular products like Money Forward ME and Money Forward Cloud, we help make managing money easier. We use cutting-edge “account aggregation” technology to gather user data, turning it into useful insights for our customers.

Within the Money Forward Business Segment (MFBS), Money Forward Cloud is a component-based cloud ERP composed of multiple service groups. While these groups provide flexibility for users to choose combinations based on their needs, developing them in isolation can lead to data silos, inconsistent user experiences, and reduced development efficiency. To solve this, our Platform Product Division (PPD) builds the common foundations that unify these services and ensures their stable use across the company.

Our division is responsible for developing and managing shared microservices and backend systems that power workflows and platform functionality across Money Forward Cloud. We work to standardize services, improve collaboration across products, and enhance performance and scalability. By organizing complex system logic, addressing technical debt, and documenting our knowledge, we aim to create a reliable, maintainable, and future-ready platform that delivers consistent value for both developers and end-users.

Main Responsibilities

As a Senior Software Engineer, you will be responsible for building out and supporting our API Platform, which includes our authorization/authentication services, API Gateway, and MCPs.

The API Platform Development Team is responsible for supporting the development and deployment of public APIs across the entire Money Forward Cloud (MFC) product suite. Our services are used mainly by other development teams within Money Forward but have some exposure to our end-users as well.

You will be contributing to a foundational pillar of the MFC experience, supporting rapidly accelerating API development by product teams as we work towards being Japan’s #1 AI Native FinSaaS company.

Specific duties include:

Develop our API Platform using primarily Go, with some JavaScript/TypeScript and React for our user interfaces

Enable product teams to rapidly expand and deploy their API suites, ensuring that our platform is reliable and secure

Write scalable, robust, testable, efficient, and easily maintainable code

Be a leading voice within the team in both technical and product discussions

Assist product teams and customers (via Customer Service members) with any inquiries or support requests they may have

Understand the functional requirements defined by the Product Manager, and break them down into clear technical system requirements

Collaborate with team members, Engineering Manager, Product Manager, and any other stakeholders

Ship software to the production environment

Ensure that our critical components are well monitored in production, and respond quickly to any issues or outages

Required Skills and Experience

Computer Science/Engineering Bachelor’s degree or related technical field

5+ years of software development experience

Experience with OAuth/public API authentication schemes

Experience with RDBMS

Experience working in an Agile/Scrum team

Team player with strong interpersonal skills

Solution-oriented and result-driven

Willingness to work with AI tools to enhance your productivity

Successful track record of developing quality software products and shipping production-ready software

Preferred Skills and Experience

3+ years of experience with Go

Experience with public cloud services such as AWS or GCP

Experience with AI-accelerated development (Claude Code, Codex, etc.), as well as an AI-focused software development life cycle (automated code review, minor defect resolution, etc.)

Experience with platform service development and operations

Experience with system architecture and infrastructure design

Experience leading projects or mentoring engineers

Experience with CI/CD

Hands-on experience with Kubernetes

Language Requirements

Business level English proficiency (TOEIC score of 700 or above equivalent).

Japanese proficiency is not required but an interest in learning or improving is preferred.

Who We're Looking For

A shared belief in Money Forward’s Mission/Vision/Values/Culture.

Passionate about leveraging technology to improve lives and drive impact in financial services.

Strong sense of responsibility and autonomy – drives progress rather than waiting for direction.

Thrives in a collaborative, diverse, and globally distributed environment.

Technology Stack

Backend: Go

Frontend: React, Next.js, TypeScript

Scripting: Python

Monitoring: Datadog, Rollbar

Infrastructure & CI/CD: AWS, Docker, Kubernetes, GitHub Actions, CircleCI (Standard MF stack)

Environment: GitHub, Slack, Jira

Work Environment

At Money Forward, we provide an environment where we can create world-class services together, and we are looking forward to welcoming you.

Provided PC Specs: We provide PCs equipped with the latest CPUs (MacOS or Windows). Custom-made PCs tailored to business requirements and replacements with the latest OS are also possible.

Systems to Enhance the Development Environment: Peripheral devices necessary for work (such as displays, mice, keyboards) can be purchased as office supplies. Generally, you can choose from standard products (catalog), and if conditions are met, you can apply for non-standard products as well.

Money Forward Library: We have a library system where you can freely borrow books, ranging from technical books to management books. Desired books can be purchased at the company's expense.

Referral Driven: We cover the cost of recruitment meals. There is a referral reward system.

Conference Participation Support: The company partially covers participation in domestic and international conferences, such as RubyKaigi and Google I/O.