Build and execute software test plans while developing Python, Swift, or Objective-C automation frameworks and generative-AI tools to expand coverage for features used in Japan.
Lead a team that tests software features across languages and locales, coordinating with engineering and quality teams to deliver accurate localization testing under tight timelines.
Build reliable automated tests for core input systems such as internationalization, Pencil and keyboards. Investigate failures and improve testing frameworks.
Freelance developers from any technical background are welcome. Tell us what you’re interested in, and we’ll email you when a matching project comes through Ranked or our partner network.
Responsible for identifying bugs in games, supporting game balance adjustments, and managing test schedules.
Develop automated tests, manage and analyze gameplay logs, and build tools that collect and visualize issues for internally developed console games. C++ experience is required.
Responsible for quality improvement and test design/execution for a chemical risk management AI product.
Lead quality design and test engineering for in-vehicle taxi systems, covering Android, hardware, networks and location services. Build CI/CD and automated E2E testing, improve simulation environments, and conduct field tests.
Develop firmware, clinical applications, hospital information systems, and embedded software for medical imaging equipment. The role covers AI and image-processing diagnostic support, design, implementation, evaluation, and verification.
Lead an approximately 10-person QA team across multiple services, managing testing, quality improvements, and stakeholder feedback while building AI-enabled verification processes. Remote work is available.
Lead technical direction for console and PC game projects, selecting and introducing technologies, guiding engineering teams, and managing external development partners, including technical coordination and quality control.
Responsible for quality assurance management in the IT department, including process formulation, reviews, and bug management.
Develop and operate USEN PAY’s payment platform across frontend, backend, cloud infrastructure, testing and monitoring. Use TypeScript, React, Kotlin, Spring Boot, AWS and Terraform to build merchant tools and new services, improve performance, strengthen reliability, and support scalable architecture.
Develop software to verify MN-Core AI accelerator architectures, including assemblers, simulators, application kernels, CI environments, and new-chip evaluation.
Leads QA strategy for Fanicon and other products, manages manual testers, sets release quality gates, and guides test automation with product engineers across Android, iOS, and web.
Join the QA team to enhance quality assurance processes and contribute to product quality activities.
Tests new mobile-game features and update content, designs and performs risk-based quality checks, identifies defects, improves QA workflows, and coordinates with partner companies in a Tokyo-based hybrid role.
Responsible for QA activities including test planning, execution, and automation to enhance product quality.
Lead QA strategy for an AI-enabled SaaS platform, designing quality processes, governance, measurement, and test automation across the development organization. Remote work is available.
Design and maintain QA plans and automated regression tests for Fanicon across Android, iOS, and web, using coding, modern test tools, and AI-assisted workflows to improve product quality.
Leads QA for IoT/SaaS products across embedded, web and mobile software, planning and running tests, analyzing results, reporting defects, and improving automation with development teams.
Leads QA for social games from development through live operations, assigning testers, planning test work, reviewing features, and coordinating quality improvements.
As the first dedicated QA engineer for AI products, you will standardize and automate evaluation flows to continuously improve quality based on user feedback.