Lead backend-focused development of Akerun Digital ID, a multi-tenant SaaS. Define requirements, design and implement web applications, select technologies, and maintain the service.
Design and operate reliable payment and financial systems, covering transaction integrity, recovery, compliance, cloud infrastructure, and new financial products. The role requires 5+ years of web application experience and leadership across multiple technical domains.
Design and develop services using microservices and REST APIs, with experience in DDD and Clean Architecture.
Lead AI-centered software architecture and development at STORES, building agent-driven development environments, improving products, and guiding high-difficulty projects across applications, infrastructure, and teams.
Lead product design across web, tablet, and mobile applications, shaping consistent user experiences from merchant administration tools to customer storefronts. Improve usability and accessibility through research, experimentation, collaboration, and design systems.
Lead development direction and project management for restaurant POS and store DX solutions, translating customer and business needs into system requirements and coordinating delivery.
Manage engineering for GREE Avatar, developing server-side and front-end features, reviewing code, improving quality and scalability, and leading team and cost management.
Develop and operate shared user-management, account, payment, and web-store platforms supporting multiple F2P and MMO online games. Design scalable systems, tune performance, and maintain reliable service operations.
Develop SaaS web applications for IoT access-control and keyless-rental services, focusing on backend design, operation, and performance. Remote work is available.
Develop Akerun’s web application across backend and frontend, building APIs, React/TypeScript UI, databases and cloud infrastructure. Remote work is available.
Develop Akerun Web’s IoT platform, linking locks and gateways to cloud services. Build Ruby on Rails APIs, research protocols, and support operations. Remote work with weekly office attendance.
Develop and operate web systems for game portals, online and console game services, campaigns, memberships, payments, and interactive user experiences.
Build and operate cloud infrastructure for Akerun Access Intelligence, automate systems with CI/CD, improve reliability and performance, and respond to incidents and technical issues.
Design and build shared platforms supporting STORES products, including authentication, product integration and AI-driven development infrastructure. Improve developer productivity through common libraries, toolchains and developer experience, and optimize large-scale cloud systems.
Manage engineering teams and oversee project execution, ensuring quality and timely delivery of web applications.
Develop and maintain web applications for commercial real-estate products, delivering customer features, improving performance, prototyping data uses, and launching new products. Remote work is available.
Leads product strategy across Raksul’s website, Peraichi, and sales BPO products, aligning roadmaps, customer journeys, data-driven decisions, and cross-functional delivery.
Develop algorithms to turn plant and mechanical drawings into structured data, extracting symbols, dimensions, and notes and converting customer problems into reusable technology.
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.
Develop a deskless-worker education SaaS, handling web/API design, development, testing, performance improvement and technical-debt reduction. Four remote days are permitted weekly.
Develop skyticket’s hotel-booking backend through microservices, data platforms, wholesaler APIs and payment integrations, while improving performance and AI/LLM features.
Design and guide the development process while ensuring smooth collaboration within the team and stakeholders.
Frontend engineering role based in Tokyo with remote/hybrid work indicated.