Lead Software Engineer, AI Email Apps (AI)

Location: Hybrid in Seoul, South Korea

Company

Building proactive AI-native applications that help people manage conversations, errands, organizing, and workflows with minimal prompting.

What you will do

• Own application engineering strategy and execution across backend, mobile, and desktop platforms.
• Design reliable AI-powered workflows covering state management, orchestration, tool use, retries, fallbacks, and failure handling.
• Build APIs and abstractions connecting AI systems with real-world product experiences.
• Lead a small senior engineering team through design reviews, code reviews, and hands-on mentorship.
• Balance latency, reliability, cost, security, and user experience in high-impact technical decisions.
• Establish production foundations including observability, monitoring, testing, and operational excellence.

Requirements

• Significant experience leading application or product engineering for complex systems.
• Strong hands-on experience building and shipping production backend systems.
• Experience building AI-powered products or systems integrating modern ML/LLM capabilities.
• Technical judgment and the ability to make decisions with incomplete information.
• Ability to work across backend and client platforms, with deep expertise in at least one.
• High standards for code quality, reliability, ownership, and engineering fundamentals.

Culture & Benefits

• Small, high-talent-density, hands-on engineering team with broad ownership.
• Independent execution, rapid decision-making, and close collaboration.
• Focus on practical results and engineering fundamentals rather than extensive process.
• Applications are evaluated by technical team members.
• Virtual and/or onsite interviews, with a process of no more than four interviews and a prompt decision.

Hiring process

• Three, and no more than four, interviews may be scheduled if there appears to be a fit.
• Interviews are conducted via virtual meetings and/or onsite.