Backend Engineer

■Responsibilities With 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. Working Hours 10：00～19：00 Job Requirements 【Required】 Meet any one of the following requirements! ・5+ years of experience in either design, development, or maintenance ・Experience developing in PHP, Java, Python, or Go ・Experience in development using the following frameworks 　・PHP framework : Laravel, lumen 　・Go framework : echo 【Preferred】 ・Experience in building automated testing, deployment flows, and maintenance and operations mechanisms for continuous system development. ・Experience in building DataLake on AWS. ・Experience in development using AWS Lake Formation, Glue ・Experience in PL, PL support (regardless of scale) ・Experience in development using Serverless Framework, or designing and building Serverless APIs English Level Business Conversation Level (TOEIC 735-860) Japanese Level Business Level(JLPT Level 2 or N2) Salary JPY - Japanese Yen JPY 4000K - JPY 6000K Other Salary Description ■Commuting allowance (up to 35,000 yen per month) ■Full social insurances (employment, workers' accident compensation, health, and employee pension) ■Shortened working hour system available ■Qualification allowance (rewarded after passing the exam) ■Welfare service (Benefit Station) ■Health checkup assistance ■Office-casual attire ■External training program (twice a year) ■Subsidies for book purchases and seminars Holidays ■2 days off per week (Sat. and Sun.) ■National Holidays ■Year-end and New Year Holiday ■Leave for congratulation or condolence ■Paid leave (granted after 6 months of employment) ■Parental leave (actual leave taken) ■Childcare leave (actual leave taken) Job Contract Period fulltime