Full Stack Engineer (AI Systems)

About the role

A stealth AI startup, backed by one of Southeast Asia's leading technology companies, is building its global founding team. It is developing an AI-native communication platform that integrates AI directly into conversations so users can plan, organize, compare, research and complete tasks in a single intelligent assistant. The client is looking for a Full Stack Engineer (AI Systems) to turn advanced AI capabilities into intuitive, production-ready workflows, combining frontend, backend and AI engineering.

Key responsibilities

• Build end-to-end product features across frontend, backend and AI integrations.
• Design and develop AI agent workflows supporting planning, tool usage, failure handling and recovery across multiple steps.
• Integrate LLMs, memory systems and external tools into scalable, production-grade applications.
• Design responsive AI interactions with streaming capabilities, partial results and low-latency performance.
• Improve system reliability, observability and fallback mechanisms for AI-powered features.
• Work closely with product, backend and machine learning teams to deliver features from concept to production.
• Iterate and improve product functionality based on user feedback, production insights and real-world usage.

Required profile

• Strong experience in full stack software engineering across frontend and backend development.
• Solid understanding of system design, scalable architecture and API development.
• Ability to work in fast-paced environments with evolving requirements.
• Strong ownership mindset, delivering features from ideation through production deployment.
• Excellent problem-solving skills and pragmatic engineering decisions in ambiguous situations.

Required skills

• Experience building AI-powered applications with LLMs, RAG or similar technologies.
• Preferred: Next.js, Python, Node.js, PyTorch, OpenAI, Anthropic or open-source LLMs, SQL and NoSQL databases, Kubernetes, Docker.