Full Stack Engineer, AI systems

ABOUT THE ROLE

A1 is building a proactive AI chat app for everyday users to bring intelligence to conversations, errands, organising and workflows. Unlike traditional chat-based applications, our product focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion. The system must handle multi-step reasoning, interact with external tools, and remain reliable despite non-deterministic model behavior.

We are looking for a Full Stack Engineer - AI Systems to build the product layer that turns these capabilities into usable, production-grade workflows. This includes designing how agents operate, fail, recover, and deliver consistent value to users.

FOCUS

- Build end-to-end product features across frontend, backend, and AI integrations

- Design agent workflows that handle planning, tool use, failure, and recovery across multiple steps.

- Integrate LLMs, memory, and external tools into systems that behave reliably under real-world conditions

- Design real-time AI interactions with streaming, partial results, and tight latency constraints

- Improve system reliability, observability, and fallback mechanisms

- Collaborate closely with ML, backend, and product teams to ship features end-to-end

- Continuously iterate based on real usage and failure modes

IDEAL EXPERIENCES

- Strong experience in full stack engineering (frontend + backend)

- Solid understanding of system design and API architecture

- Experience working with LLMs, RAG systems, or AI-powered applications

- Ability to handle ambiguity and make pragmatic engineering decisions

- Strong ownership - able to take features from idea to production

- Comfort working in fast-moving environments with evolving requirements

OUTCOMES

- Own and ship AI-native product features that move beyond chat into persistent, goal-driven workflows

- Design and deploy agent workflows that reliably complete multi-step tasks across tools and ...