◆ Backend Engineer/PHP, Java, Python, Go ◆ 100% In-house Development / Tokyo, Sapporo / JLPT N1

★Backend Engineer | 100% In-House Client Work | Go (Golang), PythonBusiness Level Japanese Required (N1 Level) ★Hybrid Work★Location: Tokyo / Sapporo★Great Welfare◆ Annual Salary：4 million ～ 6 million yen. -------------【About the company】------------- Business Description1 Video planning, production, editing and various video technology services2 Planning, development, operation and maintenance of WEB, systems and applications3 Planning, production, operation and production of events (expositions, conferences, exhibitions, etc.)4 Planning, design, construction and supervision of architecture5 Planning, design, construction, and supervision of urban planning and landscaping6 Planning, design and supervision of interiors, furniture, exhibitions, landscapes and products7 Implementation, use, licensing, maintenance and management of intellectual property rights (copyrights, patents, trademarks, utility model rights, design rights, etc.) in Japan and abroad8 Information intermediation and provision of information using networks such as the Internet, cable television, and communications satellites, as well as mail-order sales and settlement processing services9 Sales of food and beverages and planning, development, management and production of restaurants10 Advertising, marketing and sales promotion -------------【 Job Description】------------- ■ResponsibilitiesWith the launch of new business initiatives, this role involves architecture design, collaborating closely with clients to support business growth, optimizing costs, and building systems that establish operational processes. Beyond leading projects and hands-on execution, we are seeking individuals who will actively contribute to organizational management, including mentoring junior members and leading teams. 【Specifically】- System development, cost optimization, and establishment of operational processes when launching new businesses.- Building API infrastructure that combines Go and serverless architecture.- Designing an ecosystem that supports various platforms, such as mobile apps and web services.- Building a data lake and DMP for the integrated management of user behavior data, membership data, contract data, and other core business data.- Developing a data processing system that connects various platforms using Python and AWS Glue.- Managing the system layer that links various services and operations to ensure smooth and efficient workflow. 【Project Examples】- Support for the development, operation, and maintenance of online ticketing services.- Development and maintenance of consumer-facing apps and digital marketing platforms for manga cafes and karaoke chains.- Development and maintenance of business systems for ice cream chains and drugstores.- Building data analytics platforms for hamburger chains and manga cafe chains.- Enhancement and operation of high-traffic websites and e-commerce sites built using the Jamstack architecture.- Evaluation of legacy systems and their modernization to cloud-native architectures. 【What You Can Gain from This Role】- Cloud-Native Expertise: Specialized knowledge in cloud-native architecture and operation management.- Robust API Infrastructure & Ecosystems: Skills to design and build robust, flexible, and scalable API infrastructures and ecosystems.- Data Platform Architecture: Practical knowledge in constructing data platforms that serve as the foundation for leveraging data across AI, BI, and digital marketing.- Collaborative Leadership: Experience leading flexible and resilient projects built on collaborative relationships with flat, dynamic teams and clients.- Advanced Problem-Solving: Sharpened capability to identify root causes and resolve complex technical and business challenges. ■ Foreign Engineers at the Company- Internal Members: 2 out of 25- Partner / Vendor Engineers: 6 out of 15–20- Nationalities Represented: United States, India, Taiwan, China, Myanmar, Vietnam, Russia- Work Style: Currently operating under a hybrid wor