Full Stack Engineer

🚀 Senior Software Engineer | FinTech | ¥9M–¥12M | Tokyo / Hybrid

I’m currently hiring a Senior Software Engineer for my client, a technology-driven company working on the modernization of financial systems and next-generation payment platforms in Japan.

This is a great opportunity for an experienced engineer who wants real technical ownership, rather than simply implementing predefined requirements.

💡 What makes this role interesting?:

🔹 High technical autonomy

You’ll lead architecture design, technology selection, and key technical decisions across complex systems.

🔹 Modern FinTech projects

Work on large-scale financial platforms using technologies such as cloud-native infrastructure, microservices, event-driven architecture, and GenAI.

🔹 Upstream involvement The team is often involved from the early stages of projects, including requirements definition, PoCs and MVPs — giving engineers the opportunity to influence both the technology and the solution.

🔹 Global engineering environment 🌎

The company has engineers from 25 countries, creating a genuinely multicultural development environment.

🔹 Agile development

Unlike many traditional financial projects in Japan, the team works with Agile methodologies such as Scrum and Kanban, with engineers involved throughout the development lifecycle.

🛠 Tech stack

Depending on the project, you may work with:

• Java / Kotlin / Spring
• Go
• C# / .NET / ASP.NET
• Vue.js / Nuxt.js / Quasar
• TypeScript / JavaScript
• AWS / GCP / Azure
• Terraform / OpenTofu
• Kubernetes & microservices

👤 What we're looking for:

We're looking for someone with:

✅ 7 years of software engineering experience

✅ Experience as a Senior Engineer / Tech Lead, including leading a team of 3 engineers

✅ Strong experience across 2 of the following: Spring, Vue/Nuxt/Quasar, Go, C#/.NET

✅ Cloud architecture experience with AWS, GCP or Azure

✅ Experience with modern architectures such as microservices, distributed systems or event-driven architecture

✅ Professional English communication skills, Japanese is not mandatory for Senior Fullstack Engineers

Experience in FinTech, enterprise-scale systems, consulting/upstream development, high-security environments, or PoC/MVP development is a strong plus.

💰 Package

💴 ¥9M–¥12M annual salary (could be more depending on candidates experience)

🏠 Flexible work style — once a week in office minimum

⏰ Flextime with no core hours

📍 Tokyo

🌎 International / multicultural engineering environment

📈 Career opportunities:

Depending on your interests, there are opportunities to grow toward roles such as:

Tech Lead | Engineering Manager | Principal / Specialist

If you're a senior engineer who wants to have a genuine impact on architecture, technical strategy and the modernization of financial infrastructure in Japan, please apply to this role.