Demo

Full-Stack Software Engineer

The Flex
San Marino, CA Full Time
POSTED ON 1/4/2026
AVAILABLE BEFORE 2/2/2026
Join the team redefining the future of global living.

At The Flex, we believe renting a home should feel instant, intelligent, and effortless — the same simplicity as booking a ride.

Our ambition is bold: a world where anyone can live anywhere, anytime, without friction.

Powered by Base360.ai, our proprietary automation engine, we’re building the operating system for modern renting — connecting property data, orchestrating operations, and enabling seamless stays across continents.

If you’re energized by automation, AI, and large-scale real-world systems, this is your chance to help shape how millions move, live, and experience the world.

💡 What You’ll Build

As a Full-Stack Software Engineer, you’ll design and scale the core technology behind The Flex — powering instant bookings, intelligent access, automated workflows, and predictive operations.

You’ll work across frontend, backend, and cloud infrastructure, transforming complex operational challenges into elegant, scalable systems.

You won’t just ship features.

You’ll create leverage, unlock automation, and architect the foundation of tomorrow’s intelligent rental ecosystem.

⚙️ Your Mission

Build the Engine

Develop fast, reliable, and scalable applications that power bookings, payments, availability, and guest experience.

Automate at Scale

Design microservices and AI-driven workflows that replace manual tasks across the business.

Connect the Ecosystem

Architect high-impact integrations between Base360.ai and partners such as Airbnb, Stripe, Hostaway, and Twilio.

Launch & Iterate Fast

Deploy and manage serverless infrastructure (AWS) with a relentless focus on speed, reliability, and global scale.

Solve Hard Problems

Tackle real-time booking sync, pricing intelligence, keyless access logic, AI-powered alerts, and live operational dashboards.

Build With the Team

Collaborate closely with product, data, and operations to turn automation ideas into real-world impact.

🧠 You’re a Great Fit If You Have

  • Strong experience with Node.js, React, and AWS (serverless)
  • A deep understanding of API-first architectures and distributed systems
  • Experience with Python/FastAPI for scripting, automation, or data services (bonus)
  • A track record of building clean, scalable, production-ready systems
  • Curiosity about automation, AI-driven operations, and property technology
  • A bias toward execution — you ship fast, learn quickly, and enjoy solving complex problems

🌍 Why You’ll Love Working Here

Build Real Impact

Your code will shape thousands of stays and redefine a multi-trillion-dollar industry.

Small Team, Big Mission

High ownership, zero bureaucracy, and the chance to build foundational systems from scratch.

Learning & Growth

We move fast, iterate constantly, and value continuous improvement.

Performance-Based Rewards

Competitive compensation meaningful upside for exceptional talent.

Remote-First

Work from anywhere — we care about outcomes, not hours.

🚫 This Role Is Not for You If

  • You want a slow, predictable 9–5
  • You prefer planning over building
  • “Good enough” is good enough
  • You’re not committed to becoming elite in your craft

Salary.com Estimation for Full-Stack Software Engineer in San Marino, CA
$95,524 to $117,960
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Full-Stack Software Engineer?

Sign up to receive alerts about other jobs on the Full-Stack Software Engineer career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$123,167 - $152,295
Income Estimation: 
$146,673 - $180,130
Income Estimation: 
$77,657 - $95,021
Income Estimation: 
$97,257 - $120,701
Income Estimation: 
$46,723 - $64,140
Income Estimation: 
$66,157 - $90,051
Income Estimation: 
$136,714 - $171,621
Income Estimation: 
$66,195 - $86,448
Income Estimation: 
$153,752 - $200,235
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at The Flex

  • The Flex San Marino, CA
  • Join the team building the automation engine powering the next generation of intelligent operations. Base360.ai is an automation platform designed to conne... more
  • 9 Days Ago

  • The Flex San Marino, CA
  • Join the mission transforming how the world lives and moves. At The Flex , we believe renting a home should be instant, intelligent, and effortless — as se... more
  • 9 Days Ago


Not the job you're looking for? Here are some other Full-Stack Software Engineer jobs in the San Marino, CA area that may be a better fit.

  • N41 (Apparel ERP Software) Los Angeles, CA
  • Company and Position Overview Founded in 2005, N41 is the leading apparel and fashion ERP (Enterprise Resource Planning) software solution provider with in... more
  • 11 Days Ago

  • Sift El Segundo, CA
  • At Sift, we’re redefining how modern machines are built, tested, and operated. Our platform gives engineers real-time observability over high-frequency tel... more
  • 15 Days Ago

AI Assistant is available now!

Feel free to start your new journey!