About the Role :
Take the lead in architecting the future of enterprise AI. As a Lead Software Engineer - Backend AI Agents, you'll be driving agent-based AI innovation directly under the CTO. This role is a rare opportunity to shape product direction while leading development of cutting-edge LLM-integrated systems.
What You'll Be Working On :
- Provide technical leadership in AI Agent development initiatives
- Architect, design, and evaluate backend infrastructure and workflows
- Guide junior and senior engineers through code reviews and mentorship
- Collaborate cross-functionally with Product, UX, and AI Research teams
- Integrate and optimize LLM APIs (OpenAI, Anthropic, etc.)
- Design scalable and efficient AI agent systems using best-practice templates
- Deploy and operate AI services on cloud platforms (AWS, GCP, Azure)
- Optimize database performance and agent reliability
- Stay ahead of AI trends by evaluating new agent orchestration frameworks
Tech Stack & Tools :
Languages & Frameworks : Go, TypeScript, ExpressCloud & Infra : AWS (Lambda, Glue, API Gateway, ElasticBeanstalk, Batch)Databases : Aurora, ElasticSearch, AthenaFrontend : TypeScript, React, AmplifyMonitoring : DataDogCollaboration Tools : GitHub, Slack, Gather, FigmaMust-Have Requirements :
Proven experience building and scaling production-grade backend systemsStrong understanding of AI Agent system architecture and LLM integrationProject or team leadership experience in engineering organizationsExpertise in deploying systems to AWS, GCP, or AzureExperience with database performance optimization and schema designHands-on with LLM APIs and MCP (Model Context Protocol)Business-level English communication skillsHighly Preferred Skills :
Familiarity with LangChain, Rasa, Restack, or other agent frameworksExperience with agent benchmarking and performance evaluationStrong communication and presentation skillsExperience leading projects at startups or R&D orgsWhat We're Looking For :
A strategic thinker who thrives at the intersection of engineering and innovationA hands-on leader ready to architect and build from scratchSomeone excited by emerging AI and enterprise-grade deploymentPassion for performance, scalability, and operational excellenceBenefits :
Full-remote & full-flex work styleHigh-performance MacBookBook purchasing allowanceUber Eats couponsResort Works accessWeekly team lunchMedical checkups & travel supportCompany Information :
Industry : SaaS / AI Solutions
Position : Lead Software Engineer - Backend AI Agents
Employment Type : Full-time
Location : Tokyo, Japan (Japan-based, Remote OK)
Work Style : Hybrid
Why Join Us?
Shape the direction of agent-based AI products in a hypergrowth startupCollaborate with world-class engineers from 16+ countriesStay on the frontier of LLMs, orchestration frameworks, and scalable architectureJoin a Forbes 30 Under 30-led team transforming enterprise sales with AI(ref : hirist.tech)