Full Stack Engineer

About the role

This role focuses on building AI agents that execute tasks rather than simply providing suggestions. As an early team member, you will design the architecture and interact directly with users to shape the product.

Key facts

What you'll do

• Lead backend architecture and end-to-end system design.
• Develop across the entire stack, including web and mobile interfaces.
• Create the core agent loop for diagnosing, recommending, executing, and following up on tasks.
• Connect AI APIs with external tools like CRMs, calendars, SMS, and email.
• Develop memory and reasoning systems to ensure long-term product utility.
• Implement safety and reliability guardrails for automated operations.
• Engage with customers via calls and support channels to inform development priorities.
• Build messaging-based agent experiences, daily briefing engines, and evaluation frameworks.

Requirements

• Strong computer science fundamentals with a backend specialization.
• Ability to work across the full stack without relying on handoffs.
• Experience with mobile development, specifically React Native or similar frameworks.
• Proficiency in system design, API development, and scalable architecture.
• Ability to communicate technical tradeoffs to non-technical users and incorporate customer feedback.
• Daily use of AI coding tools combined with independent judgment to verify model outputs.
• Proven history of shipping production software used by others.
• High level of personal ownership and a bias for action.

Nice to have

• Production experience with LLM systems, including tool calling, retrieval, evaluation, and latency or cost optimization.
• Background in telephony or messaging infrastructure.
• Experience with workflow orchestration or event-driven systems.
• Previous experience as an early-stage engineer at a startup.

Skills & tools

• TypeScript
• React
• React Native
• Node

Practical notes

Visa sponsorship and relocation assistance are not available for this position.