Full Stack Engineer

Arcadia; San Francisco (CA); On-site; USD 120,000 - 140,000; Full time

Benefits offered by this job

Equity approximately 0.5%

Founding-level ownership

High-intensity startup environment

Job summary

Arcadia is seeking three Founding Software Engineers in San Francisco to build and scale infrastructure for autonomous AI agents in the hospitality sector. This role is ideal for candidates who thrive in fast-paced startup environments and wish to play a critical role in product and technical direction from the start.

Join a dynamic team to develop AI systems for real-time decisions across numerous guest interactions and help architect backend solutions for complex workflows.

Expect a high-intensity work culture with significant equity and ownership.

Qualifications

• Strong backend or infrastructure engineering experience.
• Experience scaling systems in startup or high-growth environments.
• Proficiency in Python preferred but flexible with fundamentals.

Responsibilities

• Build and scale core infrastructure for autonomous AI agents.
• Develop AI-powered systems for complex operational workflows.
• Help shape technical strategy and culture.

Skills

Backend engineering experience

Scaling systems in startup environments

Proficiency in Python

AI/ML systems experience

Distributed systems knowledge

Strong ownership mentality

Job description

Building autonomous AI agents that answer calls, close sales, and run hotel operations end-to-end. Trusted by leading hospitality groups across brands.

Backed by Y Combinator (W26), recently raised a $5M seed round, including a $3.3M lead seed investment, and is now scaling its founding engineering team in San Francisco.

The Role

Hiring three Founding Software Engineers to help architect and scale the infrastructure powering autonomous AI agents for the hospitality industry.

This is a true 0 to 1 engineering role for someone who thrives in fast-moving startup environments and wants direct ownership over product, infrastructure, and technical direction from the earliest stages.

You’ll work directly with the founding team to build scalable AI systems, infrastructure pipelines, and agent orchestration frameworks that support real-time decision-making across thousands of guest interactions.

What You’ll Work On

• Build and scale core infrastructure for autonomous AI agents
• Develop AI-powered systems capable of handling complex operational workflows
• Architect backend systems and data aggregation pipelines
• Build products from 0 to 1 and iterate rapidly alongside the founding team
• Optimize infrastructure reliability, scalability, and deployment systems
• Work with modern AI coding workflows and tools (Claude Code, AI-assisted development, agent frameworks)
• Design systems that integrate with hotel operational software in real time
• Help shape technical strategy, product direction, and engineering culture

Ideal Background

• Strong backend or infrastructure engineering experience
• Experience scaling systems in startup or high-growth environments
• Proficiency in Python preferred (language flexibility if fundamentals are strong)
• Experience with AI/ML systems, AI agents, LLM infrastructure, or data-intensive applications
• Familiarity with cloud infrastructure, distributed systems, and deployment pipelines
• Strong ownership mentality and ability to operate autonomously
• Interest in building from scratch in a fast-paced founder-led environment

Nice to Have

• Experience building coding tools, developer infrastructure, or AI workflows
• Prior work on data aggregation systems or AI orchestration layers
• Startup founding engineer experience
• Hospitality or travel-tech experience

Compensation

• Equity: Approximately 0.5%
• Founding-level ownership and impact
• Full-time onsite in San Francisco
• High-intensity startup environment (6 days/week onsite)
• Fast execution culture with significant ownership and autonomy