March 2022 – Present: Contract Architect for Large-Scale HR System (ATS) DevelopmentJoined as a Solution Architect, taking over an ongoing project.Analyzed existing resources, discarded all, and redeveloped the system from scratch.Served as Architect, Lead Engineer, and Server-Side Engineer.August 2023 – December 2023: Contract Architect for BI Design and Data Migration InfrastructureActed as Data Analyst, System Architect, and Lead Engineer.Consolidated data sources from various vendors into a data warehouse.Organized and visualized relationships between different data sources.Designed and built a Docker container environment for testing, deployment, and execution.2021 – February 2022: Contract White Hat Hacker and Full-Stack Engineer for Mid-Sized E-Commerce SiteDeveloped network monitoring schemes and incident response systems, and established CSIRT as a Security Engineer.Designed and built a secure Jamstack environment for WordPress as a Full-Stack Engineer.2019 – 2021: Full-Stack Engineer for a Food-Related Platform Business in JapanCollaborated with designers to create native apps as a Front-End Engineer.Built API servers as a Server-Side Engineer.Handled database engineering and table design.2015 – 2019: Creative Engineer in Vietnam for a Japanese Telecommunications Joint Venture and Travel Arrangement CompanyManaged the telecommunications department (mainly admin and sales).Handled branding and web marketing for the telecommunications department.Designed internal systems as a System Engineer.In charge of server construction, maintenance, and operation.Designed core systems for a Japanese MVNO business.2011 – 2015: Creative Engineer at a Japanese Telecommunications Company in AustraliaResponsible for branding and web marketing.Operated core systems as a Programmer.Built and managed databases as a Database Engineer.Designed systems for new business ventures as a System Engineer.Handled various server construction, maintenance, and operation tasks.2005 – 2011: Graphic Designer at an Information Processing and Printing CompanyWorked with major banks, credit card companies, and insurance companies, participating in planning to improve open rates and response rates of direct mail.Participated in multiple new business launches, responsible for designing business and operational workflows.Organized and taught internal workshops.2003 – 2005: Assistant Web Designer while Attending UniversityWorked with local governments in the Kansai region, handling cuts, icons, and photo processing.