a
affect_inc

Affect Inc.

@affect_inc

Clear communication, careful testing, no surprises

Japan
Japans, Engels
Sommige informatie wordt in het Engels weergegeven.
Over mij
I'm Kanta, a software developer and the founder of Affect Inc. in Yokohama, Japan. I build browser extensions and productivity tools. Before starting my own company, I maintained a financial institution's internal application at an IT services company in Tokyo. My own product, Proofkit, is a writing assistant that runs as a Chrome extension and a Google Docs add-on, with its interface in nine languages. I know Manifest V3, Chrome Web Store reviews, and multi-language UIs from shipping my own work. I communicate through Fiverr messages and reply quickly.... Lees meer

Skills

a
affect_inc
Affect Inc.
offline • 
Gemiddelde reactietijd: 1 uur

Bekijk mijn diensten

Browserextensies
I will develop or fix your chrome extension with manifest v3
VanafUS$ 20 / projectMeer informatie
Plug-ins development
I will build or migrate your confluence or jira app with atlassian forge
VanafUS$ 50 / projectMeer informatie

Portfolio

Werkervaring

Self_Employed

Self Employed

Fulltime • 10 mos

Software Developer, Order Management System

Sep 2026 - Present • 2 mos

I built a custom order management system for an online food retailer in Japan. - Imports orders automatically from Rakuten Ichiba and another Japanese marketplace through their APIs - Syncs order confirmation, cancellation and payment status back to the stores - Exchanges shipping data with Japan Post label software and reports tracking numbers to the marketplaces - Prints invoices and order sheets automatically

Atlassian App Developer, Markdown & Mermaid for Confluence

Aug 2026 - Present • 3 mos

I built Markdown & Mermaid for Confluence, an Atlassian Forge app, as part of my company Affect Inc. - Renders Markdown and Mermaid diagrams in Confluence Cloud, with the content indexed in Confluence search - Supports PDF and Word export - Includes a bulk migration tool for admins that converts existing pages through the Confluence REST API, with permission checks - No external data transfer, so it qualifies for Runs on Atlassian - Currently in Atlassian Marketplace review

Chrome Extension Developer, Proofkit

Jun 2026 - Present • 5 mos

I designed, built and maintain Proofkit, a writing assistant for professional writers, as part of my company Affect Inc. - Chrome extension built on Manifest V3, with a side panel, options page and content scripts that work inside editor iframes such as the WordPress block editor - Checks spelling consistency and client style rules locally, with optional AI proofreading through the Claude API - License-key payments without a backend server - Interface translated into nine languages using chrome.i18n - Published on the Chrome Web Store, plus a Google Docs add-on version on Google Workspace Marketplace