Founding Software Engineer

The Flex

2d•Remote

About The Position

At The Flex, we believe renting a home should be as effortless as booking a ride. Our mission is ambitious: enable anyone to live anywhere, anytime, without friction. Powered by Base360.ai , our proprietary technology platform, we are building the operating system for modern renting—automating operations, connecting fragmented systems, and creating seamless experiences for guests, landlords, and operators across the world. We're looking for a Founding Software Engineer to help architect and build the technology that powers the future of The Flex. This is not a typical engineering role. You'll work directly with the founder, influence product strategy, make architectural decisions, and build systems that become the foundation of a global business. You'll have extraordinary ownership, responsibility, and impact from day one. As a Founding Software Engineer, you'll help create and scale Base360.ai —the technology platform that powers every aspect of The Flex. From AI-powered workflows and booking systems to operational automation and intelligent decision-making, you'll build products that directly impact revenue, efficiency, and customer experience. You won't just ship features. You'll create systems that replace manual work, unlock scale, and become a competitive advantage for the company.

Requirements

Strong software engineering fundamentals
Experience building production-grade applications
Strong understanding of APIs, databases, and system design
Product mindset and customer obsession
Ability to work independently with minimal supervision
Strong problem-solving ability
High level of ownership and accountability

Nice To Haves

Startup experience
Experience with AI products or LLM integrations
Experience building SaaS products
Experience with FastAPI, React, AWS, or Supabase
Marketplace, travel, or PropTech experience

Responsibilities

Build Core Products: Design, build, and launch the software that powers bookings, pricing, payments, operations, communications, and guest experiences.
Architect the Platform: Make key technical decisions and help define the long-term architecture of Base360.ai .
Create Automation at Scale: Develop workflows and systems that automate operational processes across multiple countries and thousands of stays.
Leverage AI: Build AI-powered tools, agents, and workflows that improve productivity, decision-making, and customer experience.
Integrate the Ecosystem: Develop and maintain integrations with platforms including Airbnb, Hostaway, Stripe, Twilio, Google, OpenAI, and other strategic partners.
Move Fast: Operate with urgency and ownership, turning ideas into production-ready solutions quickly and effectively.
Solve Real Problems: Work on challenges such as: Reservation synchronization, Dynamic pricing, Smart access management, Guest communication automation, Operational forecasting, Maintenance and cleaning automation, AI-powered alerts and monitoring, Revenue optimization.
Help Build the Company: As one of the first engineers, your influence will extend beyond code. You'll help shape processes, culture, product direction, and the future engineering team.