I’m looking for a seasoned individual developer who can slide in as my agency’s right-hand partner and stay there for the long haul. You’ll take charge of both web and mobile builds, keep our WordPress and Shopify properties humming, and wire everything into Amazon and Rakuten APIs without breaking a sweat. An eye for design is a welcome bonus, and the ability to read and write Japanese will make collaboration smoother with several of our clients. Day to day you’ll be hands-on from front end through back end, leaning on AI tools to write clean, secure code quickly. I work fast and expect the same: frequent commits, clear communication, and proactive problem solving. This role is strictly for a solo senior engineer who can commit full time. No agencies, no part-timers, and no one still learning the ropes. If your rate is sky-high or you can only squeeze in a few hours a week, this won’t be a match. To move forward, send me: • A portfolio link that includes at least two live web or mobile projects • Specific examples of Amazon AND Rakuten API integrations you have built • Your hourly or weekly rate and the number of hours you can dedicate every week • A quick note on which AI tools you actively use in your workflow I review every submission personally and will reach out to schedule a brief technical chat with shortlisted candidates. Let’s build great products together for years to come.