Senior Backend Engineer (Go / Kubernetes) — Tokyo

Applications: candidates must already be in Japan. Visa sponsorship: not available. Japanese: Not required. English: Fluent. Japan Dev tags: Engineering, Backend, Go, Kubernetes, PostgreSQL.

Location requirement

You must already be living in Japan with valid work authorization. We are not sponsoring relocation or visa transfers from overseas for this role. Applications from outside Japan will not be considered.

About Abbeal

Abbeal is an international IT consulting firm (France, Japan, Canada). Join Abbeal's Tokyo team to build and operate critical backend platforms for Japanese FinTech clients — high-scale, reliability-focused systems in a modern Go and cloud-native stack.

Context

You will join Abbeal's engineering team in Tokyo, embedded on backend platforms for FinTech clients. Expect high-ownership work on distributed services, strong reliability requirements, and a modern cloud-native toolchain. English-speaking environment; Japanese is not required.

Your Mission

• Design, build, and operate backend services in Go
• Own reliability, scalability, and observability of distributed systems
• Model data and manage PostgreSQL at scale (schema design, migrations, performance)
• Run workloads on Kubernetes; manage infrastructure as code with Pulumi
• Collaborate with international teams and client stakeholders

Profile

• Currently based in Japan with valid work authorization — no relocation or visa sponsorship from overseas for this role
• 5+ years (ideally 8–12) in backend engineering, strong in Go (or a systems language with fast ramp to Go)
• Solid experience with Kubernetes and cloud-native operations
• PostgreSQL expertise and distributed systems fundamentals
• Infrastructure as code (Pulumi / Terraform)
• Fluent English; Japanese a plus but not required

Location and Setup

Tokyo — hybrid. Permanent (seishain) role with Abbeal. Hired and supported by Abbeal (visa sponsorship + Mobbeal expat support). Indicative range ¥9M–¥16M/year depending on experience; final package based on profile.