全栈工程师

Do one technologies inc builds payment, point-of-sale, and digital commerce solutions for the beauty and salon industry. The AI Applications & iOS Developer will lead full-stack and native iOS development, integrate AI and payment capabilities, and improve the performance and reliability of the company’s e-commerce platform.

Responsibilities:

• Build and maintain our e-commerce platform: Lead full-stack development across frontend, backend, and mobile services, from architecture and implementation to deployment and optimization
• Own iOS development: Independently design, develop, test, release, and maintain our native iOS application, including App Store submissions and ongoing performance improvements
• Develop AI-powered applications: Integrate LLM APIs, design prompts and context-management workflows, build retrieval-augmented generation (RAG) pipelines, and connect AI capabilities to existing business systems
• Leverage AI-assisted development: Use tools such as Cursor, GitHub Copilot, Claude Code, and Codex to accelerate coding, debugging, testing, documentation, and prototyping
• Integrate payment systems: Develop and maintain integrations with payment processors and digital wallets, ensuring reliable transaction processing, payment status synchronization, and exception handling
• Optimize performance and reliability: Improve application performance, system stability, and scalability, including handling high traffic during major promotional events
• Collaborate with the team: Work on-site with product, design, and engineering colleagues in New York to review requirements, align on technical decisions, and deliver features efficiently