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I'm Hidemasa Sakakibara, a highly detail-oriented and analytical professional with a strong focus on data quality assurance and operational efficiency. My background spans e-commerce and digital data management, where I thrive at following complex guidelines and delivering high-quality annotation results for AI training sets. I have led RPA-driven reporting automation that saved 19 annual man-hours, and I am fluent in native Japanese and English (TOEIC 955). I’m seeking flexible, project-based opportunities as an Independent Contractor to apply my analytical thinking and self-motivation to deliver reliable, scalable data labeling and data management outcomes.…I'm Hidemasa Sakakibara, a highly detail-oriented and analytical professional with a strong focus on data quality assurance and operational efficiency. My background spans e-commerce and digital data management, where I thrive at following complex guidelines and delivering high-quality annotation results for AI training sets. I have led RPA-driven reporting automation that saved 19 annual man-hours, and I am fluent in native Japanese and English (TOEIC 955). I’m seeking flexible, project-based opportunities as an Independent Contractor to apply my analytical thinking and self-motivation to deliver reliable, scalable data labeling and data management outcomes.

Hidemasa Sakakibara

Data Scientist, Data Analyst, Project Manager, +4

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I'm Hidemasa Sakakibara, a highly detail-oriented and analytical professional with a strong focus on data quality assurance and operational efficiency. My background spans e-commerce and digital data management, where I thrive at following complex guidelines and delivering high-quality annotation results for AI training sets. I have led RPA-driven reporting automation that saved 19 annual man-hours, and I am fluent in native Japanese and English (TOEIC 955). I’m seeking flexible, project-based opportunities as an Independent Contractor to apply my analytical thinking and self-motivation to deliver reliable, scalable data labeling and data management outcomes.…I'm Hidemasa Sakakibara, a highly detail-oriented and analytical professional with a strong focus on data quality assurance and operational efficiency. My background spans e-commerce and digital data management, where I thrive at following complex guidelines and delivering high-quality annotation results for AI training sets. I have led RPA-driven reporting automation that saved 19 annual man-hours, and I am fluent in native Japanese and English (TOEIC 955). I’m seeking flexible, project-based opportunities as an Independent Contractor to apply my analytical thinking and self-motivation to deliver reliable, scalable data labeling and data management outcomes.

Available to hire

I’m Hidemasa Sakakibara, a highly detail-oriented and analytical professional with a strong focus on data quality assurance and operational efficiency. My background spans e-commerce and digital data management, where I thrive at following complex guidelines and delivering high-quality annotation results for AI training sets.

I have led RPA-driven reporting automation that saved 19 annual man-hours, and I am fluent in native Japanese and English (TOEIC 955). I’m seeking flexible, project-based opportunities as an Independent Contractor to apply my analytical thinking and self-motivation to deliver reliable, scalable data labeling and data management outcomes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Japanese

Fluent

English

Fluent

Spanish; Castilian

Beginner

Chinese

Beginner

Work Experience

E-commerce & Subscription Business Operations Specialist at Geotechnologies, Japan

July 1, 2025 - July 1, 2025

Achieved high-margin growth in strategic segments (129% direct sales; 645% growth in Resale Operations) through targeted innovative offerings and client engagement. Spearheaded RPA-based automation of critical weekly/monthly reporting, freeing up significant team capacity for high-value strategic analysis. Consistently exceeded revenue targets (101% annual goal), with strong H1 (113%) and H2 (108%) performance in 2024. Planned data-driven campaigns (e.g., Rakuten Super Sale) that boosted new subscriber acquisition by 40% and optimized slow-moving inventory. Developed comprehensive documentation and led knowledge transfer to four team members to ensure business continuity and platform scalability.

Business Planner at Geotechnologies, Japan

January 1, 2021 - January 1, 2021

Developed and maintained comprehensive operations manuals, mitigating single points of failure and enabling smooth project transitions during rapid growth. Promoted MAPCUBE data integration into the popular game 'Densha de GO' through targeted PR campaigns to improve brand visibility. Negotiated licensing terms with external partners to revise terms, enabling new business models and increasing database sales opportunities.

Digital Map Data Manager / Creator at Geotechnologies, Japan

November 1, 2019 - November 1, 2019

Managed digital map database projects for 10 ASEAN countries, expanding scope and meeting rigorous evaluation deadlines. Enhanced QA processes by creating standardized templates, reducing manual effort by 70% and accelerating time-to-market for key releases. Conducted legal feasibility studies on personal data protection laws in five ASEAN countries, providing critical data to guide new product proposals.