Full-time

Japanese?

Security

AWS

GCP

Azure

Provide technical security consultation to internal teams, review security designs in development departments, investigate current security technologies, and report findings. Requires five or more years of advanced security experience.

Full-time

Japanese?

Remote

Frontend

TypeScript

React

Design and develop services using microservices and REST APIs, manage projects and products, and work with global teams.

Full-time

Japanese?

Visa maybe

Remote

AI

Build and refine customer-specific AI from leaders’ decision criteria, design RAG corpora, validate output quality, and explain technical constraints and improvement plans to customers.

Full-time

Japanese?

Visa maybe

Frontend

HTML/CSS

Responsible for the web frontend development of the educational service 'ZEN Study', enhancing the learning experience for students and teachers.

Full-time

Japanese?

Visa maybe

Mobile

GenAI

Tech Lead

Lead an advanced CTO-level team applying generative AI to iOS development, improving speed and quality, shaping architecture and processes, and guiding cross-product technical decisions.

Full-time

Japanese?

Visa maybe

C++

Full-stack

TypeScript

Develop web front-end and back-end applications for Smart Construction products, focusing on 3D product groups.

Internship

JP required

Full-stack

Energy

Backend

TypeScript

Develop software for energy trading platforms and related support products, involving user interface implementation and improvements.

Full-time

Japanese?

Remote

Data Eng

SQL

SaaS

Lead the architecture design and implementation of data infrastructure to scale AI readiness for clients.

Part-time

Japanese?

Gaming

Game Dev

Operations

SQL

This is a part-time Planner Assistant role with Reazon Holdings. The listed workplace is YOTSUYA TOWER in Yotsuya, Shinjuku, Tokyo, with possible work at locations designated by the company.

Full-time

English?

Visa maybe

Cybersec

Network

Security

Provides pre-sales engineering for enterprise networking and security products, translating customer requirements into solution designs, proposals, demonstrations and POC work.

Full-time

Japanese?

Visa maybe

Full-stack

Backend

Ruby

Develop new products to deliver value in the construction industry, requiring high-level skills akin to a product manager or CTO.

Full-time

Japanese?

Remote

Security

GenAI

TypeScript

Evaluate the security of AI and generative AI products and projects, design assessment standards and processes, coordinate with stakeholders, and improve security operations. The role also supports vulnerability assessments, tool selection, reviews, and the launch of a new security function in Tokyo with hybrid office and remote work.

Full-time

Japanese?

Python

Next.js

Vue

AWS

Develop and operate web systems connecting medical institutions, ETL platforms, and healthcare data services using large-scale medical datasets. Collaborate with planning, sales, and group companies.

Full-time

Japanese (N1)

Visa maybe

Remote

Backend

Kotlin

Lead the design, development, and operation of a multi-tenant administration console and identity platform supporting Money Forward Cloud products. Build user, tenant, permissions, authentication, authorization, SCIM, API, security, monitoring, and reliability capabilities.

Full-time

Japanese?

Visa maybe

ML

AI

Python

As a Mathematical Optimization Engineer, you will be involved in research and solution development in collaboration with major companies, as well as algorithm implementation related to mathematical optimization.

Full-time

Remote

Data Eng

AWS

Architect

JP company

Lead the architecture design and implementation of a data platform for autonomous driving development, driving business impact through data-driven decision making.

Full-time

Japanese?

Visa maybe

Python

SQL

Data Eng

Build data pipelines, analyze fulfillment-center operations, and create metrics, reports, and dashboards using SQL, Python, AWS tools, and data visualization to improve decisions.

Full-time

English?

Visa likely

PyTorch

ML

SQL

Design, implement, and maintain large-scale ML pipelines and optimize model performance for training on massive robot datasets.

Full-time

Japanese?

Android

Kotlin

Mobile

Lead the development of the Android app for Kurashiru, focusing on UI/UX improvements and feature development.

Full-time

Japanese?

Remote

ML

TypeScript

Python

Builds document-AI logic that turns text and tables into structured customer data using LLM/VLM, image processing, and PDF analysis, while improving extraction accuracy, routing, and fallbacks.

Full-time

English?

Visa likely

ML

Energy

GenAI

Develop machine-learning optimization engines for BEV energy-management products, using connected software data to control charging and discharging for a user-friendly experience.

Full-time

Japanese?

Visa maybe

Remote

TypeScript

React

Develop the Oishii Kenko web service and related apps with Ruby on Rails, React and TypeScript, while designing APIs, databases and AWS/GCP infrastructure. Remote work is available.