Shigeo Kitamura

Full-stack developer with 5+ years of experience building scalable web applications, and data engineer with 1.5 years of experience creating robust data pipelines. Skilled in Ruby on Rails, React, Python, SQL, and cloud platforms including Google Cloud and AWS. Currently pursuing a Data Science diploma to enhance analytical skills and proficiency in data-driven decision making. Demonstrated ability to lead teams, improve workflows, achieve significant cost reductions, and enhance user experience. Strong communicator with proven ability to collaborate effectively across teams.

Full-Stack Developer

BitStar Inc. | Influencer Matching Service Provider | Nov. 2024– Present

• Developed a web service matching influencers with companies, achieving an estimated 30% improvement in
  matching accuracy through backend optimization in Ruby on Rails and frontend enhancements in React.
• Enhanced search engine performance for influencers by implementing ElasticSearch, reducing search latency
  by 40% and improving overall user experience and engagement metrics by 25%.
   

Data Engineer

Supership Inc., UltraImpression Inc. | TV station-based video ad serving platform provider | Sept. 2022– Aug. 2024

• Led team of four, ensuring timely and successful project deliveries.
• Built data pipelines using Apache Airflow, increasing workflow efficiency by 50%.
• Implemented Cloud Composer ETL, reducing costs 20%, data errors 35%.
• Created dashboards with Tableau and BigQuery, improving ROI by 15%.

Web Developer

Supership Inc. | Data technology company specializing in Internet advertising | Apr. 2019– Aug. 2022

• Built ad serving dashboards, boosting system efficiency by 30%.
• Migrated UI from jQuery to React and upgraded Rails, enhancing security by 60%, UX by 35%.
• Produced internal training materials, saving $10,000 in external training costs.
• Managed internship program, hiring 30% of participants into full-time roles.

Web Developer Intern

Stroly Inc. | Providing a platform for online maps linked with location information | Aug. 2017– Mar. 2019

• Developed railroad stamp rally application, attracting 20,000 users.
• Analyzed and visualized logs with Redash, boosting sales lead conversions by 20%.
• Migrated legacy systems to AWS, reducing operational costs by 25% and achieving 99.9% uptime

Cornerstone International Community College of Canada

Vancouver, BC | Sep. 2024– May 2025

Data Science Diploma
 

Graduate School of Informatics, Kansai University

Osaka, Japan | Apr. 2017– Mar. 2019

Master of Informatics
 

Faculty of Informatics, Kansai University

Osaka, Japan | Apr. 2013– Mar. 2017

Bachelor of Informatics