Software Engineer, CoeFont Interpreter (Hong Kong: remote, or relocate to Tokyo)

Software Engineer, CoeFont Interpreter (Hong Kong: remote, or relocate to Tokyo)
CoeFont builds real-time AI interpretation for enterprise meetings. Our product, CoeFont Interpreter, runs 2- and 3-language meetings (JA / EN / ZH and more) for large Japanese enterprises, with per-organization context (dictionaries, files, meeting history) that keeps improving accuracy.
What the job isWe don't hire for one skill. The job is made of the four areas below. If you fit two or three of them, we want to talk.Keep real-time inference running in production. We run our own speech and translation models live, inside customers' meetings. Keep the inference servers stable under real load and cut latency. Make the interpretation itself better: run experiments and benchmarks on the models, and build the system that learns from each customer's context so accuracy keeps improving on its own. Go backend on AWS, Python on the ML side.Build product features end to end. Ship features that users touch: the desktop app (Tauri + React), the mobile app, the web app (Next.js), the Microsoft Teams plugin, and the Go backend. Own a feature from understanding the need to production deploy. We use the product in our own meetings and fix what bothers us.Talk with customers. Understanding what customers say is the most important thing we do. You'll sit in on customer conversations, hear what breaks in their meetings, and turn that into product changes yourself.Be our native Mandarin ears. Separate from product work: you are the native speaker who catches where the interpretation feels wrong in Mandarin, and who picks up what customers in Hong Kong are actually asking for. Our customers in Hong Kong also meet in Cantonese, so Cantonese is a real plus.
Who we're looking forYou want to build a product people use every day, and you've shipped something you're proud of.You use AI to its fullest, Claude Code, Codex or similar, to build high-quality products faster, and you're excited about it.Native Mandarin, with working-level English.Based in Hong Kong, happy to visit Tokyo now and then.
Nice to haveGo or TypeScript in production.Model serving or real-time inference in production (any framework).You've tried CoeFont Interpreter or another real-time interpretation tool and have opinions about it.Cantonese, or working-level Japanese.
OfferCompetitive salary.Start remote from Hong Kong (contractor or EOR). Occasional trips to Tokyo, fully covered. For senior engineers, relocation to Tokyo with visa sponsorship is on the table.Process: coffee chat, then a technical interview with our engineers, then an offer within days.

Skills
Python, JavaScript, TypeScript, React, Next.js, Golang, AWS

Work arrangement
Yes