Posted Aug 17, 2026

Full Stack Engineer, AI Internal Systems

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About A1

There are over 5 billion users using basic applications today such email, notes, tasks, and a list of applications that are not AI-native to organise their lives. Our mission is to build a proactive smart assistant for everyday users to bring intelligence to conversations, errands, organising and workflows, with minimal prompting.

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. Our objective is to help users complete tasks daily enjoyable with over ~90%* reduced time.

About the Role

We are building AI-powered internal systems to transform how A1 operates.

You will be responsible for identifying opportunities across areas such as People, Finance, Operations, Recruiting, and business workflows, and building AI solutions that improve efficiency, automate repetitive processes, and enable better decision-making.

What You Will Do

What You Will Need

How We Work

We operate as a small, senior, hands-on team. Engineers own features end-to-end — from design discussion through production monitoring.

Code reviews and design reviews are expected for all meaningful changes. We discuss architecture openly, make decisions quickly, and ship frequently.

Interview process

If there appears to be a fit, we'll reach out to schedule 3, but no more than 4 interviews.

Applications are evaluated by our technical team members. Interviews will be conducted via virtual meetings and/or onsite.

We value transparency and efficiency, so expect a prompt decision. If you've demonstrated the exceptional skills and mindset we're looking for, the process to offer may be shorter.

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