[Career]

2026-Present: Freelance engineer

Graduated from Yamanashi University Graduate School with a Master’s degree in Applied Chemistry

2016-2026: Engaged in software development and system design as a systems engineer

　　　　

Current Responsibilities:
◆Software Development◆
・Design: UI, UX, database structure, security use cases, etc.
・Implementation: C#, Python, Java, PHP, JQuery, etc.
・Operations/Maintenance: Unit testing, integration testing

　　　　　

◆AI Engineer◆
・Design: Machine Learning (ML) / Deep Learning (DL) model, algorithm selection

・Implementation / Operation: Implementation using Python etc., MLOps (continuous learning system) construction
・Evaluation: Accuracy verification, parameter adjustment, test data creation

　　　　

◆Data Scientist◆
・Data Processing: Data collection, cleansing (preprocessing), and processing
・Analysis and Prediction: Statistical analysis, sales forecasting model building, clustering

　　　　

[Qualifications]
High School Teacher Specialist
Microsoft Office Excel VBA Expert
General Poisonous and Hazardous Substances Handling Supervisor
Quality Control Examination Level 2
Ordinary Driver’s License (Type 1)
Class A Hazardous Materials Handling License
Practical English Proficiency Test Level 2
Intellectual Property Management Proficiency Test Level 3

　　　　

[Available Work]
In addition to the above, we can also undertake other tasks, such as:
・Programming and tool development
・Web design
・Tool development and modification
・UI/UX design

　　　　

【開発言語】
・Python
・C#
・R
・Java
・HTML
・CSS
・JavaScript
・PHP
・Visual Basic
・Excel VBA(macro)

　　　　

[Working Hours]
We accept work-from-home positions for 8 hours or more on weekdays.

　　　　

[Portfolio site]
https://shiwotsu.com

　　　　

We will provide you with the best proposals that are in line with your project goals, so please feel free to contact us. We will respond on the same day, so thank you for your consideration.