Senior Software Engineer / English (RT), Jobs in Tokyo, Japan - New Job Opening

Lead the Future of FinTech in an Engineering-First Culture. Join a Global Team of Experts from 25+ Countries!(Residing in Japan）

■ Job Title

Senior Software Engineer

■ Company Overview

We are a global, engineering-led organization where over 80% of our employees are engineers and leadership holds deep technical backgrounds. We specialize in high-stakes sectors like FinTech and PharmaTech, collaborating with forward-thinking clients to modernize mission-critical systems. With a team representing over 25 nationalities, we prioritize an environment where technical growth is driven by daily work, supported by cloud-native architectures and Generative AI (GenAI).

■ Your Role and Responsibilities 

• Lead architecture design and core technology decisions to maximize system quality and reliability.
• Drive modernization efforts for financial systems by resolving technical debt and building scalable foundations.
• Engage in hands-on development for complex, high-impact tasks.
• Establish and maintain technical standards, including development guidelines and testing strategies.
• Mentor mid-level engineers through code reviews, OJT, and career guidance.
• Collaborate with business teams and client engineering groups to communicate technical feasibility and architectural direction.

■ Experience and Qualifications

• 7+ years of practical experience as a software engineer.
• Proven experience leading teams of 3+ members as a Senior Engineer or Tech Lead.
• Deep expertise in at least two major stacks: Spring (Java/Kotlin), Vue.js/Nuxt.js, Go, or C#.NET.
• Hands-on experience with cloud-native platforms (AWS, GCP, or Azure) and IaC (Terraform).
• Experience designing modern systems (microservices, distributed systems, event-driven architecture).
• Fluent technical communication skills in English for collaboration within a multinational team.

■ Additional Preferred Qualifications

• Experience in financial system or FinTech development with high security standards.
• Experience in consulting-style upstream processes and proposing technical solutions to customers.
• Experience with large-scale enterprise systems and PoC/MVP development.
• Experience introducing and operating agile practices (Scrum, Kanban).]

■ Good Reasons to Join

• High Technical Autonomy: Significant discretion in selecting architectures and technology stacks.
• Global Impact: Join an international culture with 25+ nationalities and tackle top-tier technical challenges.
• Growth Paths: Pursue specialist tracks like Tech Lead or Principal Engineer with performance-based raises every six months.
• Flexible Environment: Full flexible working hours (no core time) and the ability to work from home or the office.

■ Work Location
Tokyo (Remote/Hybrid options available)