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The Flex Tech Stack

Flexible short-term rental platform with event-driven booking and payment automation

Real Estate LONDON, London 51–200 employees Founded 2019 Privately Held
theflex.global LinkedIn

The Flex operates a rental platform built on Node.js, React, and AWS (Lambda, DynamoDB, EventBridge, SQS), with deep integrations into Stripe, Hostaway, and Twilio. The stack shape—event-driven services, automation workflows, and API-first architecture—reflects a company focused on eliminating manual operations across bookings, payments, and guest communication. Hiring is engineering-heavy (381 of 494 roles) and skewed toward senior/lead levels, indicating active platform development rather than early-stage scaling.

Tech Stack 28 technologies

Core StackTrello Asana Slack HubSpot Salesforce Meta Ads Google Ads Node.js React AWS Python FastAPI Stripe Twilio TypeScript AWS Lambda DynamoDB Zoho Google Analytics 4 Webflow Hotjar TikTok Ads Manager Meta Ads Manager Hostaway CRM EventBridge AWS SQS AWS EventBridge
AdoptingStripe Twilio Python FastAPI Hostaway

What The Flex Is Building

◆Challenges

  • Removing friction from guest and operator journeys
  • Pricing intelligence
  • Replacing manual operations
  • Improving booking conversion
  • Replacing manual processes with automation
  • Eliminating manual processes
  • Scaling acquisition across cities
  • Optimizing acquisition funnels
  • Booking synchronization
  • Manual operations across the company

▲Active Projects

  • Deep integrations with airbnb, stripe, hostaway, twilio
  • Initial architecture powering bookings, payments, availability, and guest experience
  • Event-driven services and automated workflows
  • Event-driven automation services
  • Initial architecture powering bookings and payments
  • Automation and intelligent workflows to remove friction
  • Event-driven automation workflows
  • Build high-performing acquisition funnels for bookings and leads
  • Launch weekly experiments across channels
  • Api-first platforms connecting base360.ai to internal tools and external partners

Hiring Activity

Minimal490 roles · 3 in 30d

Department

Engineering
381
Marketing
68
Product
18
Ops
2
Support
1

Seniority

Senior
258
Mid
109
Lead
68
Manager
32
Junior
3
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About The Flex

The Flex rents furnished apartments in strategic locations across Europe and emerging markets, targeting users who prioritize flexibility and landlords seeking to avoid high management fees. Founded in 2019 and headquartered in London, the company operates a two-sided marketplace with active hiring across 25+ countries. The product layer spans booking, payment processing, availability synchronization, and guest experience workflows. Recent development focuses on event-driven automation to reduce friction in guest and operator journeys, with ongoing work to improve booking conversion and scale acquisition across new cities.

HeadquartersLONDON, London
Company Size51–200 employees
Founded2019
Hiring MarketsIndonesia, Malaysia, Italy, Egypt, United Kingdom, Austria, Finland, Greece

Frequently Asked Questions

What tech stack does The Flex use?

Node.js, React, Python, FastAPI, AWS (Lambda, DynamoDB, EventBridge, SQS), Stripe, Hostaway, Twilio, HubSpot, Salesforce, Google Analytics 4, and Webflow.

Where is The Flex hiring?

The Flex has open roles across 25 countries including the UK, Germany, France, Austria, Italy, Poland, Romania, Indonesia, Malaysia, Brazil, and more. Engineering roles dominate the hiring mix (381 of 494 active positions).

What is The Flex working on?

Building event-driven automation services, deep integrations with Airbnb/Stripe/Hostaway/Twilio, booking and payment architectures, intelligent workflows to remove manual operations, and acquisition funnel experiments.

How this profile is built

The Flex's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.