Senior Backend Engineer

Backend Engineer — Tokyo (Hybrid)Starting Salary Range: 5,500,000 ~ 10,000,000 JPYJapanese level required: Business level(N2) This company is one of Japan’s leading technology companies, operating large-scale internet and digital services.With more than 10,000 employees worldwide, the company is expanding its business across areas such as internet platforms, AI, and digital solutions. ＝＝＝＝＝＝＝＝＝＝＝＝＝◆Requirements (Must Have)3+ years of practical experience in backend development, operations, and maintenance for web services3+ years of development experience using programming languages and frameworksExperience developing APIs based on business workflows and requirementsBasic knowledge of CI/CDBusiness-level Japanese skills ◆Preferred QualificationsExperience in system design, including requirements definition and technology selectionExperience developing applications at a B2C service companyKnowledge of frameworks such as Spring BootKnowledge of web apps and hybrid apps (JavaScript)Knowledge of common NoSQL solutions such as RedisUnderstanding of microservices architectureKnowledge of backend security ◆Ideal CandidateSomeone who can work independently and take ownership of their tasksFlexible and adaptable in changing environmentsAble to work quickly and respond flexiblyEager to learn new technologies and skillsAble to explain ideas and technical topics clearly to others＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ Main ResponsibilitiesYou will be responsible for developing and improving new applications for both customers and administrators. Details include:Participating in the development and design of core project code, monitoring the stability and performance of core systems, optimizing performance, designing/refactoring/optimizing system architecture, and designing interfaces between productsParticipating in the design of key modules, as well as their development and implementationContributing to the identification of technical challenges and the formulation of countermeasures, while continuously improving the processing performance of core systems in line with the growth of the product business scale