Senior Backend Engineer (Go), Communication Platform Department, PPD, Tokyo

**About the company:** Money Forward Minato-ku, Tokyo Money Forward is a fintech startup delivering tools to visualize and improve both individuals'​ and companies'​ financial health. **Responsibilities:** Design, build, and maintain high-performance, scalable backend systems and microservices through active daily coding and code reviews. Set technical direction for platform projects, translating complex business requirements and domain logic into sound, future-ready architecture. Proactively identify operational risks, reduce technical debt, and enforce high standards for software security, performance, and system reliability. Plan and execute core infrastructure initiatives to ensure long-term platform stability, development efficiency, and seamless cross-product integration. Provide technical mentorship to engineers, elevating the team’s engineering standards, troubleshooting techniques, and problem-solving capabilities. Requirements 6+ years of experience developing and operating medium-to-large-scale web services, with strong expertise in Golang. Proven track record in designing scalable backend architectures, microservices, and robust Web APIs leveraging AWS, relational databases (SQL), and sound data modeling. Deep knowledge of backend system design and automated testing strategies to ensure long-term system scalability, performance, and reliability. Demonstrated ability to make critical technical decisions, mentor engineers, foster team growth, and champion software engineering best practices. Exceptional communication and stakeholder management skills, with a proven ability to lead cross-functional initiatives alongside product managers, designers, and leadership. Strong sense of ownership, self-direction, and resilience in fast-moving, evolving environments. Business level English proficiency (TOEIC score of 700 or above equivalent). Nice to haves While not specifically required, tell us if you have any of the following. Experience with Kafka and event-driven or message-driven architectures to build scalable, decoupled systems. Practical knowledge of Domain-Driven Design (DDD) to model and organize complex business domains. Experience working within multicultural, multinational engineering teams across diverse backgrounds. Advanced AWS expertise, specifically focused on cloud architecture optimization and performance tuning. Familiarity with Agile and Scrum methodologies, including sprint planning, estimation, and retrospectives. Japanese proficiency is not required but nice to have. Compensation ¥7,008,000 ~ ¥11,004,000 annually. **Requirements:** 6+ years of experience developing and operating medium-to-large-scale web services, with strong expertise in Golang. Proven track record in designing scalable backend architectures, microservices, and robust Web APIs leveraging AWS, relational databases (SQL), and sound data modeling. Deep knowledge of backend system design and automated testing strategies to ensure long-term system scalability, performance, and reliability. Demonstrated ability to make critical technical decisions, mentor engineers, foster team growth, and champion software engineering best practices. Exceptional communication and stakeholder management skills, with a proven ability to lead cross-functional initiatives alongside product managers, designers, and leadership. Strong sense of ownership, self-direction, and resilience in fast-moving, evolving environments. Business level English proficiency (TOEIC score of 700 or above equivalent). **Nice to have:** While not specifically required, tell us if you have any of the following. Experience with Kafka and event-driven or message-driven architectures to build scalable, decoupled systems. Practical knowledge of Domain-Driven Design (DDD) to model and organize complex business domains. Experience working within multicultural, multinational engineering teams across diverse backgrounds. Advanced AWS expertise, specifically focused on cloud architecture optimization and performance tuning. Familiarity with Agile and Scrum methodologies, including sprint planning, estimation, and retrospectives. Japanese proficiency is not required but nice to have. **Compensation:** ¥7,008,000 ~ ¥11,004,000 annually.