Software Engineer

The Flex

17d•Remote

About The Position

At The Flex, we believe renting a home should feel as effortless as booking a ride. Our mission is ambitious: enable anyone to live anywhere, anytime, without friction. Powered by Base360.ai , our proprietary automation platform, we are building the operating system for modern renting—connecting property data, orchestrating operations, automating workflows, and enabling seamless stays across continents. We're looking for a highly ambitious engineer who wants to build systems that create leverage at scale. This isn't a role where you'll spend months debating specifications. You'll build, ship, automate, and solve real-world problems that directly impact thousands of guests and properties. If you're excited by APIs, automation, AI agents, cloud infrastructure, and building products from the ground up, we want to meet you. What You'll Build As a Founding Software Engineer, you'll help architect and scale Base360.ai —the technology platform powering every aspect of The Flex. You'll build internal products, automation engines, AI-powered workflows, integrations, and operational systems that eliminate manual work and allow the business to scale globally. Your work will touch everything from guest journeys and property operations to pricing intelligence and AI-driven decision-making. Your Mission Build the Core Platform Design and develop scalable applications, services, and APIs that power bookings, pricing, payments, guest experiences, and operations. Create Powerful Automations Build event-driven workflows that automate tasks previously performed by humans. Develop AI-Powered Systems Leverage LLMs, AI agents, and machine intelligence to streamline operations, improve decision-making, and enhance customer experiences. Design API-First Architecture Create robust APIs that enable seamless communication between internal systems, third-party providers, and future products. Integrate the Ecosystem Build and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, OpenAI, Google, and other strategic partners. Scale Infrastructure Deploy and manage cloud-native infrastructure designed for reliability, performance, and global growth. Solve Complex Operational Problems Build solutions for: Real-time reservation synchronization, Dynamic pricing intelligence, Smart key management, Automated guest communication, Operational forecasting, Cleaning and maintenance automation, AI-powered monitoring and alerts Move Fast Own projects end-to-end—from idea to deployment—and continuously improve the systems you build.

Requirements

Strong experience building 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
Ability to work independently with minimal supervision
Strong problem-solving ability and product mindset
Curiosity about AI, automation, and operational efficiency
A bias toward action and shipping

Nice To Haves

Property technology (PropTech)
Marketplace businesses
AI agents and workflow automation
Event-driven architectures
Supabase
AWS serverless infrastructure

Responsibilities

Design and develop scalable applications, services, and APIs that power bookings, pricing, payments, guest experiences, and operations.
Build event-driven workflows that automate tasks previously performed by humans.
Leverage LLMs, AI agents, and machine intelligence to streamline operations, improve decision-making, and enhance customer experiences.
Create robust APIs that enable seamless communication between internal systems, third-party providers, and future products.
Build and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, OpenAI, Google, and other strategic partners.
Deploy and manage cloud-native infrastructure designed for reliability, performance, and global growth.
Build solutions for: Real-time reservation synchronization, Dynamic pricing intelligence, Smart key management, Automated guest communication, Operational forecasting, Cleaning and maintenance automation, AI-powered monitoring and alerts
Own projects end-to-end—from idea to deployment—and continuously improve the systems you build.