is the AI operating system for short-term rental businesses, helping property managers run their operations on autopilot.
Born out of The Flex, a short-term rental operator that scaled to an eight-figure business using its own software, Base360.ai is now launching as a standalone platform for short-term rental operators worldwide.
We bring reservations, guest communication, pricing, payments, cleaning, maintenance, and reporting into one platform - helping operators automate manual work, reduce costs, increase revenue, and scale their portfolios.
Senior Software Engineer
If you're excited by APIs, automation, AI agents, cloud infrastructure, and building products from the ground up, we want to meet you.
As a Senior Software Engineer, you'll help architect and scale Base360.ai—the platform powering every aspect of a short-term rental business.
Your work will span the entire short-term rental lifecycle: from listing distribution, pricing, and bookings to guest stays, property operations, and financial reporting.
Build event-driven workflows that eliminate repetitive work—from scheduling cleaning after a booking to sending check-in instructions and generating owner statements.
Build and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, OpenAI, Google, and other strategic partners across the short-term rental ecosystem.
Deploy and manage cloud-native infrastructure designed for reliability, performance, and integral growth across multiple property management businesses.




Own projects end-to-end—from understanding an operator's problem to architecture, implementation, deployment, and ongoing improvement.
Bring senior engineering judgment to technical decisions, code reviews, and the reliability of the systems you build.
Python
FastAPI
React
TypeScript
PostgreSQL
AWS
Serverless architecture
Twilio
Stripe
Docker
GitHub Actions
Strong experience building and owning production-grade software systems
Experience with FastAPI, Python, React, or similar frameworks
Strong understanding of APIs, distributed systems, and cloud architecture
Experience designing scalable backend systems and reliable data models
Short-term rentals, hospitality technology, or property management systems
AWS serverless infrastructure
Core short-term rental workflows are automated through systems you've built
Reservations, availability, payments, and operational data move reliably between systems
The platform supports more operators and properties while maintaining reliability and performance
Solve problems experienced daily by short-term rental operators, with direct access to The Flex's operations to test ideas and see their impact.
Solve real-world challenges across software, AI, automation, hospitality operations, and scale.
Performance-Based Rewards
Remote-First
You're comfortable shipping work without taking responsibility for its quality
We're looking for someone who wants to help build the AI operating system for the short-term rental industry.
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📌 Senior Software Engineer (Lérida)
🏢 The Flex
📍 Lérida