Full-Stack Product Engineer

The Flex; España; Presencial; PHP 4.302.396 - 6.146.281; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Remote-first work environment

Ownership over product decisions

Opportunity for high growth

Descripción de la vacante

The Flex is seeking a Full‑Stack Product Engineer to help shape the future of renting technology. In this role, you will design, build, and automate solutions that improve user experiences and streamline operations.

This is a unique chance to work directly with founders and stakeholders within a remote-first and high-growth startup. If you're passionate about rapidly developing impactful products and solving real-world challenges, this opportunity is for you.

Formación

• Must have strong full-stack development experience with a product mindset.
• Ability to work independently and take ownership of projects.
• Experience with building production-grade applications and understanding APIs.

Responsabilidades

• Build products end-to-end by designing, constructing, testing, and launching features.
• Work closely with founders to identify and resolve customer problems.
• Create automation systems to enhance efficiency across the company.

Conocimientos

Full-stack development experience

Building production-grade web applications

Strong understanding of APIs and databases

Product mindset and user-centric thinking

Strong problem-solving skills

Excellent written communication

Herramientas

Python

FastAPI

React

TypeScript

PostgreSQL

AWS

Stripe

Twilio

OpenAI APIs

Descripción del empleo

At The Flex, we believe renting a home should be as simple as booking a ride.

Our mission is to 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 systems, and creating seamless experiences for guests, landlords, and operators worldwide.

We're looking for a Full‑Stack Product Engineer who thrives at the intersection of product, engineering, and execution.

This isn't a role where you'll simply implement tickets.

You'll identify problems, design solutions, build products, automate workflows, and help shape the future of the platform.

What You'll Do

• Build Products End‑to‑End — Take ideas from concept to production by designing, building, testing, and launching features that create measurable business impact.
• Own Customer Problems — Work directly with founders and operational teams to understand challenges and transform them into elegant software solutions.
• Move Fast — Ship quickly, gather feedback, iterate, and continuously improve products based on real‑world usage.
• Create Automation — Design systems that eliminate manual work and allow the company to scale efficiently.
• Build Internal Tools — Develop operational dashboards, workflow engines, management platforms, and AI‑powered tools used across the business.
• Connect External Systems — Build integrations with platforms such as Airbnb, Stripe, Hostaway, Twilio, Google, and OpenAI.
• Leverage AI — Implement AI‑powered features and workflows that improve productivity, decision‑making, and customer experience.
• Scale the Platform — Ensure systems remain reliable, secure, and scalable as the business grows internationally.

Tech Stack

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

You don't need experience with every technology listed above, but you should be capable of learning quickly and adapting.

What We're Looking For

Must-Have

• Strong full‑stack development experience
• Experience building production‑grade web applications
• Strong understanding of APIs and databases
• Product mindset and user‑centric thinking
• Ability to work independently and take ownership
• Strong problem‑solving skills
• Excellent written communication

Nice‑to‑Have

• Experience with FastAPI
• Experience with React and TypeScript
• Experience with AI tools or LLM integrations
• Startup experience
• PropTech, marketplace, or SaaS experience

What Success Looks Like

Within Your First Year

• You've launched multiple high‑impact features
• Manual operational processes have been automated
• Product development cycles are significantly faster
• AI‑powered workflows have been deployed across the business
• Base360.ai has become a stronger competitive advantage for The Flex

Why Join The Flex

• Massive Ownership — You'll have direct influence over product decisions, architecture, and company strategy.
• Build Real Products — Your work will impact thousands of users and properties across multiple countries.
• Learn at Startup Speed — You'll work closely with founders and gain exposure to engineering, product, operations, AI, and business.
• Remote‑First — Work from anywhere.
• High Growth Environment — We're building quickly and looking for people who want to grow alongside the company.

This Role Is Not For You If

• You prefer highly structured corporate environments
• You only want to write code from predefined specifications
• You avoid ownership outside your immediate responsibilities
• You are uncomfortable moving quickly and adapting to change

If you love building products, solving real‑world problems, and creating systems that scale, we'd love to hear from you.