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05-06. バックエンドエンジニア(新規AI/データプロダクト)
Backend engineer for Gaudiy's new AI/data product that turns its entertainment fan data (incl. MyAnimeList) into decision-support tools. Builds APIs/server-side in Go/Python/TypeScript on Google Cloud, develops reverse-ETL flows from the data platform, and picks databases (Spanner, Firebase, Cloud SQL) per volume/latency needs.
Mobile App Engineer-Crypto Trading (New York City Metropolitan Area)
Native iOS engineer to build a new cryptocurrency trading app from scratch at Nexshift: owning Swift mobile architecture, real-time market data via REST/WebSockets, gesture-driven charts, secure wallet/biometric features, and full App Store release lifecycle. Full-time on-site in NYC; $185k–$300k plus equity.

Project Manager
Coordinates global enterprise API integrations for Alpaca’s brokerage platform, bridging technical teams with clients to deliver onboarding, compliance, and feature rollouts for fintech/crypto partners.
User Experience Study Tester - OKX Crypto Exchange
Freelance, task-based remote UX research: testers complete a guided first-time journey in the OKX crypto exchange app (sign up, ID verify, deposit, buy crypto), narrating aloud while recording screen/audio, then submit feedback and join weekly Friday debrief calls. Pays $20–25 USD per 1-hour session in France.
Senior Backend Engineer
Senior backend engineer building Go-based APIs, backend infrastructure, and web services for Japanese startup clients in eSports, AI, and blockchain. Day to day: API and platform development, performance tuning, security basics, and writing unit/integration tests.
VML & Ogilvy | Integration Lead (Open X), Japan
WPP is the trusted growth partner for the world’s leading brands. We unite cutting-edge media intelligence and data solutions, world-class creativity, next-generation production, transformative enterprise solutions and…




