Senior iOS Engineer, Money Forward Cloud, Fukuoka

About Us

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 “account aggregation” technology to gather user data, turning it into useful insights for our customers.

Our company has reached a turning point from "Cloud to AI" and is accelerating company-wide AI Transformation (AX) toward achieving our goal of becoming the "No. 1 Back-Office AI Company in Japan" under "Money Forward AI Vision 2026."

Leveraging our robust customer base of over 440,000 companies and years of accumulated business logic, we are expanding beyond the traditional SaaS market into the ¥14.1 trillion "Digital Worker" market, where autonomous AI agents substitute and augment human labor.

To turn this grand ambition into reality, we are driving "AI-PDLC / AI-SDLC (AI-Driven Development)" to redefine the product development process itself. We are seeking engineers who want to look beyond simple SaaS feature additions—redefining architecture and user experiences using cutting-edge AI agent technologies to co-create next-generation products across job functions.

Overview

At Money Forward, we leverage technology to solve financial challenges for businesses and individuals. Our Fukuoka office leads the development and operations of our flagship B2B services: Money Forward Expense and Money Forward Payables.

We are looking for an iOS Engineer to join the Money Forward Expense team. Money Forward Expense is an enterprise SaaS platform that integrates data across diverse back-office platforms and applications to automate and streamline expense management workflows.

Our mobile development team is dedicated to shipping new features and continuously refining UI/UX so users can effortlessly manage expenses from their smartphones. Enhancing app stability, resilience, and overall product quality is equally central to our mission.

We welcome applications from iOS engineers who are excited to collaborate across disciplines, tackle complex technical challenges, and drive the continuous growth of our product.

About the Fukuoka Development Base

Since opening in December 2017, Money Forward’s Fukuoka Development Base has steadily expanded alongside a growing community of talented engineers and designers.

In November 2025, we relocated our office to "Fukuoka Daimyo Garden City" to set the stage for our next chapter of growth. We are now aggressively recruiting engineers and designers to help our organization leap forward.

Our local vision is "Move Forward." We place the highest priority on growth opportunities for every member, striving to be an energetic hub where everyone can boldly take on new technologies and complex challenges.

[UI Turn Support Campaign Ongoing]

Money Forward is currently running a campaign to support relocation to our Fukuoka 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.

Responsibilities and Duties

• Lead technology selection and architecture design for the iOS application, overseeing end-to-end delivery from design and development to operations.
• Collaborate closely with Product Managers, UI/UX Designers, and Backend Engineers to flesh out ambiguous requirements through prototyping and technical spikes (including identifying non-functional requirements and technical risks).
• Build and continuously optimize development workflows leveraging Generative AI and AI agents to accelerate delivery velocity and improve engineering quality.
• Balance release quality, technical debt, and development speed to continuously improve product reliability (including test automation in partnership with QA).
• Elevate team technical capabilities and mentor team members through architectural design reviews, code reviews, and introducing industry best practices.
• Expand technical impact beyond iOS by contributing across boundaries, including API design and integration (Ruby on Rails / GraphQL).
• Contribute to cross-organizational engineering initiatives and knowledge sharing within the company-wide mobile engineering community.

Required Skills and Experience

• 5+ years of professional experience developing iOS applications using Swift (or equivalent depth of experience).
• Proven track record leading iOS app architecture and tech stack selection, with end-to-end ownership from commercial release to ongoing production operations.
• Hands-on experience driving test automation (e.g., XCTest or equivalent frameworks).
• Daily practical experience integrating Generative AI tools (e.g., Claude Code, Cursor, GitHub Copilot) into development workflows to measurably boost productivity and code quality.
• Experience delivering software within Agile/Scrum team environments.
• Proven ability to build consensus with cross-functional stakeholders and proactively push projects forward.

Preferred Skills and Experience

• Business-level Japanese proficiency.
• Deep understanding of iOS build systems and hands-on experience building/maintaining mobile CI/CD pipelines.
• Experience building internal developer tooling or optimizing workflows using AI agents and MCP (Model Context Protocol).
• Practical experience developing iOS applications consuming GraphQL APIs.
• Experience modularizing large-scale iOS applications to accelerate build times and streamline team collaboration.
• Experience managing dependencies and designing scalable architectures (e.g., Clean Architecture) in multi-module environments.
• Full-stack or cross-boundary engineering experience involving backend frameworks (e.g., Ruby on Rails).
• Experience serving as a Tech Lead, guiding technical direction and mentoring engineers.
• Experience building B2B SaaS or enterprise productivity applications.
• Active contributions to open-source software (OSS).

Language Requirements

• Japanese: Not required
• English: Business level (equivalent to TOEIC 700 or above)
  • If you do not have a qualification equivalent to TOEIC 700 or above, you will be required to take a company-designated test during the selection process.

Technology Stack and Tools Used

• iOS: Swift, SwiftUI, Core Data, Apollo, ReactorKit, The Composable Architecture (TCA), Swift Package Manager (SPM)
• Android: Java / Kotlin, Android Jetpack (Camera, DataBinding, Navigation, etc.), LiveData / ViewModel, Dagger / Hilt, OkHttp3, Retrofit2, Apollo Android
• Backend: Ruby on Rails, Go, Node.js, GraphQL
• Frontend: React, TypeScript, Next.js
• Database: MySQL (Amazon Aurora)
• Infrastructure & Middleware: AWS (ALB, EC2, ECS, RDS, S3, SQS, ElastiCache, EKS, etc.), GCP (BigQuery, Firebase), Kinsta, NGINX, Squid, Memcached, Apache Kafka, Logstash, Filebeat, Maxwell, Kibana, Elasticsearch, Fluentd, Envoy, Puma, HAProxy, Docker, Redis, Terraform
• CI/CD & Source Control: GitHub, GitHub Actions, CircleCI, ArgoCD, AWS CodeBuild
• Development Environment: Docker, Vagrant, Terraform Enterprise
• Monitoring & Observability: Datadog, Rollbar, Bugsnag, Sentry, New Relic
• Collaboration & Project Tracking: Slack, Jira, Asana, Trello, Backlog
• Business Platforms: Salesforce, HubSpot, Marketo
• Security & Quality Automation: OWASP ZAP, Burp Suite, Sider (Brakeman), Snyk, VAddy, Dockle, Trivy, and various AI tooling

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.