Available for freelance & spot work

Code that lifts the load. Lens that deepens the moment.

Yoshiki Watanabe (Yoppie). A systems engineer driving business automation and DX, and a photographer capturing live music — two specialisations, one person.

9+ yrs as SE
2 disciplines
50+ works shown
Penguin at Asamushi Aquarium Live Band Performance in Shibuya Autumn Foliage in Nasu Sunset over the Hirono Coast Jellyfish at Asamushi Aquarium
Penguin at Asamushi Aquarium
01 Engineering Systems · Automation · DX

Solving workflow friction with systems.

Repeated manual tasks, siloed processes, disconnected data. Manufacturing-floor perspective applied to automation and DX.

What I Can Do
Business Automation (RPA, Scripts, GAS)DX & Digital TransformationProduction Mgmt SystemsAccounting SystemsWeb DevelopmentAI-Driven DevelopmentPM / Tech Lead (100+ people)Offshore Vendor ManagementLegacy System Migration & InsourcingData Integration & VisualizationCloud (AWS / Cloudflare)
Experience
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Automation

Business Automation

Full automation of routine tasks via UiPath, Python, and GAS. Proposed RPA adoption to executives, won sign-off, and led group-wide rollout — delivering 50+ hours/month in documented savings.

UiPathPythonGASSQL Server
DX
Digital Transform.

DX & Transformation

Starting with "where do we begin?" — stakeholder interviews, ROI modeling for executives, adoption, and end-to-end implementation. Communicates in plain language; designs DX that actually sticks.

ConsultingRequirementsPM/PLRPA
Systems

Production Mgmt

Mission-critical manufacturing systems: maintenance, extensions, and new builds. Single-handedly delivered a new inventory system end-to-end; refactored data-access logic to make key screens 1.2× faster.

VB.NETOracleC#.NET
Selected Works
CASE 01

Group-wide Accounting RPA (300-person enterprise)

From executive proposal and approval through group-wide rollout. Delivered 50+ hours/month in savings.

RPADXPL
CASE 02

Corporate Intranet Replacement — PM

100-person program. Precision design-review process prevented offshore requirement gaps — zero post-release fixes.

PMOffshore MgmtReact
CASE 03

Algo Trading System

Personal project: ML + statistical prediction engine with database optimized for tens of millions of records.

PersonalPythonAI/ML
CASE 04

Bilingual Portfolio Site (this site)

Requirements to production in 2 weeks using Claude Code. Near-zero infra cost on Cloudflare.

AstroCloudflareAI-Driven
02 Photography Live Music · Landscape · Wildlife

Capturing heat of the moment.

Based in live music photography. The light and expression on stage, the electricity of the crowd. Landscapes and wildlife when on the road.

Live

Live Music

Stage photography at live venues and events. Capturing expressions and the electricity of the room.

Scenery

Landscape & Travel

Nature and cityscapes on the road. Patient framing of light and fleeting moments.

Retouch

Retouch & Delivery

Selection, retouching, and file delivery. Finished to fit your intended use.

渡邉 康輝
About
渡邉 康輝 Watanabe Yoshiki
📷 よっぴー

A systems engineer specialising in production management and accounting systems in manufacturing, with a focus on business automation and DX. Personal projects include stock-trading automation and web development.

On weekends the camera comes out at live-music venues — shooting gigs, landscapes, and wildlife. Technical precision and on-the-ground energy: both matter equally.

Business
MYH Solutions (sole proprietor)
Field
System Development / Photography
Engineering
Automation · DX · Core Systems
Photography
Live Music / Landscape / Wildlife
Core stack
TypeScriptPythonGoAstroReactTailwind CSSFastAPIAWSCloudflareKubernetesTerraformDocker
Plans & Pricing

Pricing

Rates vary by scope. These are starting guides — feel free to reach out first.

Engineering

Spot Work

Small automations & fixes

¥30,000~ / job
≈ $200
  • Task automation & scripting
  • Excel / report optimisation
  • Existing tool tweaks & consults
  • Landing page creation (drive leads & conversions)
Get in touch
Photography

Photography

Events, products & portraits

¥5,000~ / shoot
≈ $35
  • Live, product & portrait shoots
  • Selection + retouching included
  • Digital delivery — ready for SNS & web
Get in touch

* Prices are indicative and billed in JPY; USD figures are approximate. Travel, scope, and timeline affect the final cost. Web and landscape shoots quoted individually.

Contact

Let’s start a conversation.

For engineering work or a photo shoot — you’re welcome to reach out. I usually reply within two business days.