Senior Software Engineer (K P), Jobs in Tokyo, Japan - New Job Opening

Job Description

Career Opportunity: Senior Software Engineer in Japan | Tokyo (Hybrid) !

■ Senior Software Engineer (English Required, Japanese is a plus)

■ Company Overview

A fast-growing, engineering-first technology company with over 80% engineers, focused on driving innovation through strong technical leadership and continuous learning.

With a diverse global team across 25+ countries, the company works in small, agile teams delivering high-impact solutions.

Key domains include:

FinTech: Modernizing financial systems, payment platforms, and core banking

PharmaTech: Building SaaS solutions to enhance R&D productivity

The organization is currently expanding its engineering teams to support large-scale digital transformation projects, leveraging cloud-native technologies, mobile development, and Generative AI, with a strong focus on PoC-driven and upstream development work.

■ Your Role and Responsibilities 

●Lead architecture design & technology decisions for scalable, high-quality systems.

●Drive modernization of financial platforms, reducing technical debt

●Provide technical leadership & mentorship to engineers, improving team capability

●Own end-to-end development delivery with focus on quality, timelines, and performance.

●Solve complex challenges related to performance, security, and scalability.

Core Areas

●Architecture & Cloud: Design large-scale systems and cloud-native solutions (AWS/GCP/Azure)

●Development Leadership: Hands-on contribution, agile delivery (Scrum/Kanban), system & database management

●Technical Standards: Define coding practices, test strategies, and best practices

●Mentorship: Guide and upskill junior/mid-level engineers through reviews and coaching

●Stakeholder Management: Collaborate with product, business, and client teams; communicate technical insights clearly

■ Experience and Qualifications

●7+ years of software engineering experience with team leadership (3+members)

●Strong expertise in at least two: Java/Kotlin (Spring), Vue/Nuxt, Go, C# (.NET)

●Hands-on experience with cloud platforms (AWS/GCP/Azure) and IaC tools (Terraform/OpenTofu)

Technical Strengths

●Experience in modern architectures (microservices, distributed systems, event-driven)

●Solid understanding of SDLC, system design, and core computer science fundamentals

Communication

●Ability to communicate effectively in English within a global team (written required, speaking preferred)

■ Good Reasons to Join

●High ownership in architecture & technology decisions

●Work on complex FinTech challenges using modern technologies

●Clear career growth paths (Tech Lead, Principal Engineer, etc.) with competitive compensation

●Opportunity to contribute end-to-end (requirements to design) with real business impact

●Collaborate with a diverse global team (25+ nationalities)

■ Work Location

Tokyo, Japan (Hybrid)

Interested or know someone suitable? Let’s connect!

Share your updated CV at [email protected]

Limited interview slots available – early applicants preferred   

Details will be provided during the meeting.