Senior Software Engineer at The Flex | FR | Rezi

Senior Software Engineer at The Flex

Senior Software Engineer

The Flex · FR

1 months ago

Senior Software Engineer

The Flex · FR

a month ago
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About the Role

We're looking for a highly ambitious Senior Software Engineer who wants to build systems that solve real problems at scale. You'll build, ship, automate, and deliver products that directly impact property managers, their teams, and their guests. If you're excited by APIs, automation, AI agents, cloud infrastructure, and building products from the ground up, we want to meet you.

Responsibilities

  • Design and develop scalable applications, services, and APIs that power reservations, availability, pricing, payments, guest experiences, and property operations.
  • Build event-driven workflows that eliminate repetitive work—from scheduling cleaning after a booking to sending check-in instructions and generating owner statements.
  • Use LLMs and AI agents to automate guest communication, triage maintenance requests, support pricing decisions, and help operators manage their portfolios more efficiently.
  • Create robust APIs that connect internal services, booking channels, third-party providers, and customer systems.
  • 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 global growth across multiple property management businesses.
  • Build solutions for real-time reservation and availability synchronization, dynamic pricing intelligence, smart lock access and key management, automated guest communication across channels, operational forecasting, cleaning and maintenance automation, owner reporting and financial workflows, and AI-powered monitoring and alerts.
  • 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.

Requirements

  • 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
  • The ability to work independently and make sound technical decisions
  • Strong problem-solving skills and a product mindset
  • Curiosity about AI, automation, and operational efficiency
  • A bias toward action, shipping, and learning from real users
  • The ability to balance delivery speed with maintainability and reliability

Skills

  • Python
  • FastAPI
  • React
  • TypeScript
  • Supabase
  • PostgreSQL
  • AWS
  • Serverless architecture
  • OpenAI APIs
  • Twilio
  • Stripe
  • Docker
  • GitHub Actions
  • APIs
  • Automation
  • AI agents
  • Cloud infrastructure
  • Distributed systems
  • Cloud architecture
  • Backend systems
  • Data models
  • Problem-solving
  • Product mindset
  • AI
  • Operational efficiency
  • Short-term rentals
  • Hospitality technology
  • Property management systems
  • Multi-tenant SaaS platforms
  • Marketplace businesses
  • Booking channel integrations
  • AI agents
  • Workflow automation
  • Event-driven architectures
  • AWS serverless infrastructure

Location

  • Remote

Work Type

  • Remote-First
  • Full-time

Experience Level

  • Senior

Benefits

  • Competitive compensation with substantial upside for exceptional performers.
  • Remote-First

About the Company

  • Base360.ai 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.