---
title: 'Founding Software Engineer at The Flex'
canonical: 'https://feeny.ai/job/founding-software-engineer-the-flex-paris-abrjrrtwqpaf'
type: 'job'
last_seen: '2026-09-09'
---

# Founding Software Engineer at The Flex

- **Company:** The Flex
- **Location:** Paris, France
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-06-15
- **Last confirmed live:** 2026-09-09
- **Apply:** https://jobs.ashbyhq.com/the-flex/806abd84-e07a-4ffc-9823-39fa097896a4

## Job description

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 http://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.

## WHAT YOU'LL BUILD

As a Founding Software Engineer, you'll help create and scale Base360.ai http://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.

## YOUR MISSION

## 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 http://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.

## TECH STACK

Our current stack includes:

- Python
- FastAPI
- React
- TypeScript
- Supabase
- PostgreSQL
- AWS
- OpenAI APIs
- Stripe
- Twilio
- Docker
- GitHub Actions

We care more about your ability to learn and build than your experience with any specific technology.

## WHAT WE'RE LOOKING FOR

## MUST HAVE

- 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

## BONUS POINTS

- 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

## WHAT SUCCESS LOOKS LIKE

Within your first year:

- Critical company operations are automated through systems you've built
- Base360.ai http://Base360.ai becomes a core competitive advantage
- New products are shipped rapidly and reliably
- Engineering velocity increases significantly
- AI-powered workflows are embedded across the business
- The platform is ready to scale internationally

## WHY JOIN THE FLEX

## MASSIVE IMPACT

Your work will directly shape how thousands of people live, travel, and experience cities.

## FOUNDING-LEVEL OWNERSHIP

You'll have significant influence over product, technology, and company direction.

## BUILD ALONGSIDE THE FOUNDER

Work closely with leadership and help define the future of the business.

## LEARN FASTER

Gain exposure to engineering, AI, product, operations, growth, and company-building.

## PERFORMANCE-BASED REWARDS

Competitive compensation with meaningful upside for exceptional contributors.

## REMOTE-FIRST

Work from anywhere. We care about results, not hours.

## THIS ROLE IS NOT FOR YOU IF

- You're looking for a predictable corporate environment
- You prefer maintaining systems rather than building them
- You need constant direction and supervision
- You avoid ownership outside your immediate responsibilities
- You are uncomfortable with change, ambiguity, and rapid execution

If you're excited by building products, solving hard problems, leveraging AI, and helping create the operating system for modern renting, we'd love to hear from you.

#LI-Remote

## About The Flex

## Company Overview
- **One-liner**: The Flex is a flexible accommodation platform offering hotel-grade, fully furnished rentals for tenants, landlords, and businesses, operating across the UK, France, Algeria, and expanding into new cities.
- **Entity Type**: Private (bootstrapped/early-stage growth company)
- **Headquarters**: London, United Kingdom (with offices in San Francisco, Dubai, Algiers, and Casablanca)
- **Founded**: 2019
- **Founders**: Raouf Yousfi (Co-Founder & CEO) and Michael Buggy (Co-Founder & COO)

## Core Business
- **Primary industry**: Real Estate / Flexible Living / Property Management
- **Target customers**: B2B (150+ corporate partners for employee relocation, staffing, insurance claims), B2C (tenants seeking flexible leases), and B2B (landlords seeking guaranteed rent with zero voids)
- **Mission statement**: To eliminate the constraints of traditional rental models, reimagining the idea of 'home' from something fixed to something flexible—unlocking freedom for renters, efficiency for landlords, and growth for entire cities.

## Products & Services
- **Flexible Rentals (Tenants)**: Fully furnished, hotel-grade homes with digital key access, utilities, Wi-Fi, optional housekeeping, and 24/7 live support. Leases as short as a week or as long as needed, with month-to-month terms, easy extensions, and exits.
- **Guaranteed Rent (Landlords)**: Fixed monthly payments with zero voids from day one; The Flex handles upgrades, dynamic pricing, resident vetting, cleaning, and maintenance.
- **Corporate Housing (B2B)**: One master lease unlocks an entire portfolio across cities; dedicated account manager; ideal for employee relocation, project teams, and insurance claims.

## Market Standing
- **Valuation**: Not publicly available
- **Key Metric**: 47 employees (as of mid-2025) with monthly headcount growth of +4.9%; 500+ active job postings; 84,000+ LinkedIn followers; over 150 corporate partners; properties in multiple cities across the UK, France, Algeria, and recently launched in Lisbon.
- **Notable Investors/Partners**: 150+ corporate clients; no external funding rounds publicly disclosed (appears bootstrapped or early-stage without major VC backing).
- **Growth Signals**: Rapid headcount growth (+4.9% monthly), recent expansion into Lisbon (July 2025), 500+ open roles, and a goal of reaching properties in every major city worldwide by 2027.

## Competitive Advantages
- **Flexibility at scale**: Month-to-month leases, same-day move-ins, cross-border relocation with a few taps—unlike traditional long-term leases.
- **Full-stack property management**: Landlords get guaranteed rent and zero voids, while tenants get hotel-grade service (cleaning, maintenance, 24/7 support).
- **Data-driven operations**: Evidence-based decision-making, dynamic pricing, and rapid evaluations for landlords.
- **Flat, ego-free culture**: No hierarchy or bureaucracy; best idea wins based on data, not tenure.

## Strategic Focus
- **Global expansion**: Actively entering new cities (Lisbon launched July 2025) with a target of having homes in every major city worldwide.
- **Scaling the platform**: Growing the portfolio of properties and corporate partnerships; hiring aggressively (500+ open roles) to support expansion.
- **Product innovation**: Building a seamless, Amazon-like rental experience with instant approvals, digital keys, and flexible terms.

## Why Work Here
- **Culture**: Ego-free, fast-paced, values-driven environment with no hierarchy or bureaucracy. Emphasis on big ideas, learning from failure, and shipping fast.
- **Remote-first**: The Flex is a remote-first company, hiring stellar talent globally and trusting them to own outcomes.
- **Mentorship & growth**: Work alongside senior leaders (including founders) who provide direct feedback, hands-on coaching, and clear career progression. Promotions based on performance, not tenure.
- **Accountability**: Each teammate owns clear metrics and turns objectives into outcomes.
- **Innovation**: Data-backed approach; open-minded, diverse team driving solutions.
- **Notable perks**: Minimal rules, total accountability, genuine freedom; "Career Rocket Ship" where you own mission-critical projects from day one.
- **Application process**: Online assessment, HR interview, and founder interview for every role.

## Sources
1. [theflex.global – About Us](https://theflex.global/about-us)
2. [theflex.global – Careers](https://theflex.global/careers)
3. [theflex.global – Homepage](https://theflex.global/)
4. [LinkedIn – The Flex](https://uk.linkedin.com/company/theflexglobal)
5. [Ashby – The Flex Jobs](https://jobs.ashbyhq.com/The-Flex)

## Other roles at The Flex

- [Strategic Finance Manager](https://feeny.ai/job/strategic-finance-manager-the-flex-london-yqq7wh2w0kfd) — London, United Kingdom
- [Senior Finance Analyst — The Flex](https://feeny.ai/job/senior-finance-analyst-the-flex-the-flex-london-xj8wtwd89g6h) — London, United Kingdom
- [Entrepreneur in Residence (EIR)](https://feeny.ai/job/entrepreneur-in-residence-eir-the-flex-london-na5c1mac8may) — London, United Kingdom
- [Growth Marketer](https://feeny.ai/job/growth-marketer-the-flex-london-bq85tca3jbnk) — London, United Kingdom
- [French-Speaking Customer Experience Specialist](https://feeny.ai/job/french-speaking-customer-experience-specialist-the-flex-paris-h80exm7q0ywm) — Paris, France
- [Full-Stack Engineering Lead](https://feeny.ai/job/full-stack-engineering-lead-the-flex-paris-s7pw2fbaq6x8) — Paris, France
- [Full-Stack Product Engineer](https://feeny.ai/job/full-stack-product-engineer-the-flex-paris-z15mcf3fd057) — Paris, France
- [Software Engineer](https://feeny.ai/job/software-engineer-the-flex-paris-5ek2zg81xebt) — Paris, France
- [Founding Software Engineer](https://feeny.ai/job/founding-software-engineer-noia-labs-paris-qe965xsjbfvj) — Paris, France
- [Founding Software Engineer](https://feeny.ai/job/founding-software-engineer-cerve-global-ltd-sweden-d811pr9thfjz) — Sweden