后端开发工程师（Kotlin/Java + Spring Boot），Money Forward X，东京

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 cutting-edge “account aggregation” technology to gather user data, turning it into useful insights for our customers. As announced in "Money Forward AI Vision 2026(https://www.linkedin.com/pulse/full-transcript-money-forward-announced-ai-strategy-vision-phwoc/?trackingId=sl33ZIGRFzkBJJv7wI9qsg%3D%3D)," we view AI utilization not as an option, but as a prerequisite for sustainable enterprise growth. Guided by executive leadership, we are accelerating an all-in AI shift across the entire company. Rather than treating AI merely as an efficiency tool for existing tasks, we fundamentally ask, "How should this process exist in the first place?" to reconstruct products and workflows optimized for the AI era. Powered by a rich, active user base and vast datasets, we strictly practice AI-driven development engineered backward from maximum user value. Internally, we actively integrate generative AI tools into our development environments, driving radical productivity gains and rapid product iterations. We are looking for motivated engineers and product team members who want to embrace new technologies without fear of failure in this period of global trial and error—and who are truly passionate about building high-impact AI services grounded in massive real-world data. About the Role We are seeking an enthusiastic and skilled Intermediate-level Kotlin (Server-side) with Spring Boot Developer to join our dynamic team. In this role, you will be responsible for developing and maintaining server-side applications using Kotlin and the Spring Boot framework, focusing on building and scaling our secure OIDC authentication platform. You will work closely with our cross-functional teams to design, implement, test, and deploy high-quality software solutions that meet our clients' needs. Responsibilities and Duties Design and develop robust, scalable, and secure server-side applications using Kotlin and Spring Boot. Collaborate with product owners, software architects, and other team members to understand requirements and translate them into technical solutions. Write clean, efficient, and maintainable code, following best practices and coding standards. Conduct code reviews and provide constructive feedback to ensure code quality and adherence to coding guidelines. Troubleshoot and debug issues, identify root causes, and implement effective solutions. Collaborate with front-end developers and UI/UX designers to integrate server-side functionality with the user interface. Design, create, and maintain SDK’s to facilitate seamless integration with our backend services. Optimize application performance and ensure scalability and reliability. Write comprehensive unit tests and participate in integration and system testing. Stay up-to-date with the latest industry trends, technologies, and frameworks related to Kotlin and Spring Boot. Required Skill-set Bachelor's degree in Computer Science, Software Engineering, or a related field (or equivalent experience). Proven experience as a Kotlin/Java developer in a server-side development role. Strong proficiency in Kotlin/Java programming language. Solid understanding of Spring Boot framework and its core principles. Proven experience with SDK creation and maintenance. Experience with RESTful API development and integration. Familiarity with database systems such as MySQL, PostgreSQL including performance optimization. Working knowledge of containerization technologies like Docker and orchestration frameworks like Kubernetes. Knowledge of software engineering practices, including version control (e.g., Git), unit testing, and continuous integration. Familiarity with Agile development methodologies. Excellent problem-solving and analytical skills. Strong English communication and collaboration skills. Ability to work independently and as part of a team. Self-motivated and eager to learn and stay updated with new technologies. Familiarity with AI tools and integrating AI capabilities into backend applications. Strong understanding of OIDC, OAuth 2.0 and FAPI related skills and authentication protocols. Good to have Skill-set Experience with cloud platforms such as AWS, Azure, or Google Cloud Platform. Familiarity with microservices architecture and related technologies (e.g., Spring Cloud). Experience with messaging systems such as RabbitMQ or Apache Kafka. Basic understanding of frontend frameworks like Next.js. Japanese Language Proficiency Experience in AI development and/or experience in using AI tools to improve development processes. Money Forward is at a major turning point, shifting "from Cloud to AI." We are currently driving "AX (AI Transformation)"—the next step beyond DX—with the goal of providing "Digital Workers," where AI agents autonomously execute tasks. As we enter a phase of evolving into Japan's No. 1 back-office AI company by integrating AI agents into all of our products in the future, we are looking for individuals who can contribute to AI-driven development and value creation.(More information here(https://www.linkedin.com/pulse/full-transcript-money-forward-announced-ai-strategy-vision-phwoc/?trackingId=sl33ZIGRFzkBJJv7wI9qsg%3D%3D)) 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. (*Excluding certain group companies) 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. 【職種 / 募集ポジション】 Backend Developer (Kotlin/Java + Spring Boot), Money Forward X, Tokyo 【雇用形態】 正社員 【給与】 年収 6,408,000円 〜 9,504,000円 Monthly salary system ※Includes fixed allowances for up to 45 hours of legal overtime, legal holiday work, and 40 hours of late-night work. 【勤務地】 108-0023 21F Tamachi Station Tower S, msb Tamachi, 3-1-21 Shibaura, Minato-ku, Tokyo 【Salary System】 Min 534,000 JPY / month（6,408,000 JPY / year）〜792,000 JPY / month（9,504,000 JPY / year） Each including fixed allowances of 155,489 JPY〜230,617 JPY / month. 【Bonus】 A「High Performance Bonus」may be paid to employees who receive high evaluations based on semi-annual evaluations in addition to their salary. ※Please note that the remuneration of the High Performance Bonus is subject to change according to the company's performance. 【Probation Period】 3 months from join date 【Working Hour System】 Discretionary Labor System for Professional Work ※Conditions apply; subject to change to Flextime System. 【Working Hours】 9:30 - 18:30 (60 min break) are the basic working hours. However, employees are able to choose their working hours at their own discretion. ※There is potential for overtime work outside the determined hours. 【Work Style Policy】 Hybrid work style ・As a standard practice, employees are required to work at the office a minimum of 2 days per week. Employees are encouraged to spend 3 or more days in the office. (This policy may be subject to chan